OIL WELL CEMENT EVALUATION - CHL LOG
WHEELIS ENGINEERING, LTD

the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL

KNOWING THAT OIL WELL CEMENT EVALUATION LOGGING IS VERY COMPLEX, CONTROVERSIAL, AND POLITICAL. START WITH THE CEMENT JOB, CEMENT PLACEMENT AND PLACEMENT PATTERNS, THE CHEMISTRY OF IN PLACE CEMENT CURING, AND FINISH WITH THE ART OF CEMENT EVALUATION - THE CHL.

CEMENT EVALUATION and THE CEMENT JOB -

The Cement Job -

the Vocabulary  

the Knowledge  

the Understanding  

the Confidence  

AN EDITORIAL - 

The Cementing Companies main focus is to help design and laboratory test each cement recipes, sell cement and the necessary designed additives for the unique cementing recipe designed for each well, furnish the personnel and the specialized equipment to deliver and mix and pump the cement job at the well sight and does not include in place cement curing analysis. 

The Logging Companies cement evaluation package main focus, as directed by the industry, is toward the up or down cement evaluation meeting immediately after running the well’s cement evaluation log to determine, with the rig waiting, if the cement job is satisfactory or unsatisfactory for zone isolation thru the critical intervals for the well’s production zones which determines the sequence of the rest of the completion steps to continue finishing the completion of the well. This focus does not normally include measured in place cement curing analysis. 

Cement Placement and Cement Placement Patterns –

When the Well is being drilled, the rotating Drill Pipe is whipping around in the borehole making the Path of Lease Resistance for the drilling fluid the same thought out the Wellbore and Annular Hole Area, and the Path of Lease Resistance in not that important.

All the time the Casing is being run, the well’s drilling fluid is not being circulated or moved until the Casing is in place.

After the Casing is in place the Rig’s Mud Pumps are hooked up and the drilling fluid circulation is started. The Casing is not moving like the Drill Pipe was and the Path of Lease Resistance controls the flow of the moving circulating drilling fluid, and the Well's circulation pattern is established.

The Circulation Pattern is set for the Cement job –

If the Casing is somewhat centered in a somewhat round hole, the entire fluid column is moving, because the Path of Lease Resistance is similar all round the Casing.

If the Casing is ex-centered to one side, the fluid column is only moving on the high side of the borehole, because that is the Path of Lease Resistance around the Casing.

If when the well was drilled, the borehole has a rifle barrel irregular shape, the fluid column is going to follow that rifle barrel irregular shape, because that is the Path of Lease Resistance around the Casing.

The following mixed Cement slurry is going to continue up the Well's flow pattern establish by the circulating Drilling Fluid Column. The heavy, thick Cement column has little chance of making a new flow pattern.

Knowing the above, the result is three Cement Placement Patterns that can be seen and documented by the CHL Trace presentation.

The Chemistry of In Place Cement Curing –

The Cement Slurry is a complex mixture of an artificial material made by burning a blend of limestone and clay complicated with the impurities of the area it was mined from.  Plus, the impurities of the water it was mixed with.  Plus, the chemistry of the Drilling Mud and the Wellbore.

What is the Cement's Measured In Place Cement Curing Analysis at the Time the Log was run?

 A somewhat Centered Casing with Uniform Cement Placement and a fast curing Cementing Recipe

 A Cement Job with the Cementing Column Rotating and Spiraling up the Hole and a Slower Curing 6 day Cementing Recipe that will improve with Additional Curing Time

THE ART OF CEMENT EVALUATION - THE CHL

 THE CHL TRACE AND CHL HEADING - 

A CEMENT EVALUATION LOG EVERYONE IN THE ROOM CAN UNDERSTAND.  

CHL - Cement Hydraulics Log is a proven, visual, simple, straight forward Cement Evaluation interpretation, using the 3 ft amplitude signal. The CHL identifies the 100% Cement Reading for your casing size, casing thickness, and cement compressive strength and couples it with the interpretation cutoff limit for possible 100% solids, Crystalline Cement, for a consistent interpretation in a twenty line display with shading from Black to Grey to White.

OIL WELL CEMENT EVALUATION IS VERY COMPLEX AND CONTROVERSIAL

What are the Range of Values that define the success of your Cement Job? A two millivolt reading always indicates a good Cement Job, but sometimes a ten to fifteen millivolt reading can be a good Cement Job also. 

A Cement Job with a Somewhat                               A Cement Job with the Cementing 

Centered Casing with Uniform                                  Column Rotating and Spiraling up 

Cement Placement and a Fast -                                 the Hole and a Slower Curing 6 Day   

Curing 2 day Cementing Recipe -                              Cementing Recipe with NO Long 

A Satisfactory Cement Job.                                        4 White Line Channels - 

                                                                                      A Satisfactory Cement Job,  

                                                                                      with a Cement that will continue 

                                                                                      to Cure and Improve with Additional Time.


THE CHL HEADING – The Knowledge and the Understanding of In Place Cement Curing for the Well’s Cementing Recipe adds more confidence to the Well’s Cement Evaluation Presentation. 

A Fast Curing Cement Recipe                                    A Slow Curing Cement Recipe 

                                                                                    that will Improve with additional Curing Time

OIL WELL CEMENT EVALUATION is POLITICAL

Because the Cement Evaluation Log reflects the quality of the Well Drilled and Cemented and is a direct reflection on the Drilling Department, who Plans and Designs the Drilling of the Well, and Plans and Designs the Cement Job, makes Cement Evaluation Logging very political and controversial and puts the Logging Companies in the middle with more and more complex Cement Evaluation Presentations, that everyone in the room needs extensive training to understand.

The Industry has not insisted that the Cementing Companies and the Logging Companies make the existing Cement Evaluation Packages Technology present and evaluate Cement Placement and Measured In Place Cement Curing as a critical part of the Cement Evaluation Package process to insure that Drilling has this Knowledge and Understanding for the Well's Completion Planning.  

The importance of having the knowledge and understanding of Measured In Place Cement Curing, most of the time, is not a critical concern, but knowing that sometimes it is, changes everything.

Drilling, who Plans and Designs the Drilling of the Well, and Plans and Designs the Cement Job, should have the added insight from the Logging Company - Cement Placement and Measured In Place Cement Curing. 

Someone in the Well Planning and Approval meeting that routinely evaluates measured In Place Cement Curing and knows and understands that complex Cement Recipes are unique and Cement Curing time needs to be addressed.

OIL WELL CEMENT EVALUATION is COMPLEX AND CONTROVERSIAL AND POLITICAL 

 

CEMENT EVALUATION IN TWO PARTS -

 

the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL

CEMENT EVALUATION IN TWO PARTS -

FOR PART TWO -

Wheelis Engineering has the Internet CHL Program for the Vocabulary, the Knowledge, the Understanding, and the Confidence, for the Before and the After Job, Cement Evaluation Meetings. But, to complete the CHL Cement Evaluation Package, the CHL Trace and CHL Heading program needs to be adapted into a unit operational software package for bond logs to run the CHL Trace and CHL Heading simultaneously with the Logs at the Well Sight for the Up or Down Zone Isolation Meeting.

FOR PART ONE -

Wheelis Engineering is in search of a company that provides electric wireline unit operational software for acoustic cement bond logs to discuss entering into a software licensing agreement, adding the CHL Trace software and the CHL Heading software to run simultaneously with the acoustic cement bond log at the Well Sight. Contact Bill Wheelis at 1 - 504 - 393 - 0263 or E -mail wwheelis@cox.net

The CHL would give DRILLING, who Plans and Designs the Drilling of the Well, and Plans and Designs the Cement Job, the opportunity to look at a Cement Evaluation Log, The CHL Trace and the CHL Heading presentation, who’s goal is to give insight into the Present Cement Job and Zone Isolation on this Well with a look toward the Next Well in this Area. Plus, have a Cement Evaluation Log everyone in the room can understand.

CEMENT EVALUATION IN TWO PARTS – 

PART NO. 1 – With the Rig Waiting on a Decision  

A decision from the Decision Makers in the Up or Down Cement Evaluation Meeting as to whether the Cement Job is Satisfactory or Unsatisfactory for Zone Isolation thru the Critical Intervals for the Well’s Production zones.

The programming is needed for the Well Sight CHL Trace and CHL Heading to run simultaneously with the Bond Log at the Well Sight.     

PART NO. 2 - BEFORE AND AFTER THE JOB COMMUNICATION 

Job communication at the Office with the opportunity to build a Professional Relationship with the help of a Cement Evaluation Program that can help the DRILLING AND the Logging Company have 

the Vocabulary                                                         FOR 

the Knowledge                                                         COMMUNICATION 

the Understanding                                                    WITH THE EACH OTHER 

the Confidence                                                         BEFORE AND AFTER THE JOB 

to be able to build a Professional Relationship with Logging part of the Meetings to discuss the Improvement Features for the next Cement Job.

The programming is completed for Before and After Job Communication  - the Internet CHL at www.addchl.com 

the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL

PART NO. 1 –

With the Rig Waiting on a Decision 

A decision from the Decision Makers in the Up or Down Cement Evaluation Meeting as to whether the Cement Job is Satisfactory or Unsatisfactory for Zone Isolation thru the Critical Intervals for the Well’s Production zones. 

CHL - Cement Hydraulics Log is a proven, visual, simple, straight forward Cement Evaluation interpretation, using the 3 ft amplitude signal. The CHL identifies the 100% Cement Reading for your casing size, casing thickness, and cement compressive strength and couples it with the interpretation cutoff limit for possible 100% solids, Crystalline Cement, for a consistent interpretation in a twenty line display with shading from Black to Grey to White.

A CEMENT EVALUATION LOG EVERYONE IN THE ROOM CAN UNDERSTAND.  

A Proven Product with over Four Hundred Logs run for over Ninety Different Production Companies


At the Well Sight with the Rig waiting for a decision, the main focus for the Cement Evaluation Package is toward the Up or Down Cement Evaluation Meeting immediately after running the Well’s Cement Evaluation Log. The CHL Presentation gives the Logging Engineer at the Well Sight and the Company Pusher on the Rig and the Decision Makers at the Up or Down Meeting, a visual, simple, consistent cement evaluation, that everyone can understand, as to whether the Cement Job is Satisfactory or Unsatisfactory for Zone Isolation thru the Critical Intervals for the Well’s Production Zones. A decision made with confidence. 

A quick decision reduces the Rig Standby Time and the Well’s Completion sequence can continue quickly. 

A CEMENT EVALUATION LOG EVERYONE IN THE ROOM CAN UNDERSTAND.


THE CHL LOG IS A PROVEN PRODUCT WITH OVER FOUR HUNDRED LOGS
RUN FOR OVER NINETY DIFFERENT PRODUCTION COMPANIES.

  A somewhat Centered Casing with Uniform Cement Placement and a fast curing Cementing Recipe

 A Cement Job with the Cementing Column Rotating and Spiraling up the Hole and a Slower Curing 6 day Cementing Recipe that will improve with Additional Curing Time

The CHL Trace presentation and the CHL Heading’s goal is to give insight into the Present Cement Job and Zone Isolation on this Well with a look toward the Next Well in this Area.

the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL

PART NO. 2 – 

The Before and After Job Follow Up - 

COMMUNICATION TO BUILD A PROFESSIONAL RELATIONSHIP AT THE CLIENT’S OFFICE - BEFORE AND AFTER THE JOB 

AND THE BENEFITS OF THAT RELATIONSHIP

The CHL Internet Program, www.addchl.com, with a las file of depth and the 3 ft amplitude plus the pdf file of the main log section, for a Cement Evaluation Log play back where Sales and the Client can input more data and replay the Log, to compare, the Design of the Cement Job to the Logged results of the Cement Job. 

The CHL TRACE AND the CHL HEADING for the following completions types and the different types of cement jobs - 

            * Production Casing Cementing 

            * Liner Cementing 

            * Production Casing with Stage Collar Cementing 

            * Production Casing with Bradenhead Cementing

The CHL TRACE AND the CHL HEADING for -

* Assist and add confidence in the initial zone isolation determination 

* Measure the cement curing and cement compressive strength at the time of the log 

Indicate cement placement flow pattern and measure the cement placement efficiency 

Indicate channel size and channel size cutoff, plus insight into channeling continuity 

*  Record the hole size and the cement top relationships 

Provide a heading insert to document the intervals of critical isolation 

Document and help analyze squeeze job results 

Document in one place the well data and cementing data 

Help with cementing field studies for the next well in the area 

Add cement compressive strength to frack vs. production studies 

Initiate channel flow analysis on wells with questionable production 

*  Note - The CHL server is supported by standby power for 24/7 availability. 

The importance of having the knowledge and understanding of In Place Cement Curing,  most of the time, is not a Critical Concern, but Knowing that sometimes it is, changes everything.   

Having someone in the Well Planning and Approval meeting that routinely evaluates measured In Place Cement Curing and knows and understands that complex Cement Recipes are unique and Cement Curing time needs to be addressed.

AN OPPORTUNITY FOR A LONG TIME PROFESSIONAL RELATIONSHIP 

The First Well Drilled in the Area, as shown, the Cementing and Zone Isolation is questionable. To be able to be part of the Improvement Features discussion for the next Well in this area - Communication, as shown.

The CHL Trace presentation and the CHL Heading’s goal is to give insight into the Present Cement Job and Zone Isolation on this Well with a look toward the Next Well in this Area.

THE RESULTS OF HAVING THE CHL 

for the Before and After Job Sales Calls, using the CHL Heading Data and the addition of the CHL Trace to establish a Long Time Professional Relationship with the Client. 

Before the job, having the Vocabulary for Communication for Well Sketch Details and Cementing Data, with DRILLING, who Plans and Designs the Drilling of the Well, and Plans and Designs the Cement Job.  

After logging, the Knowledge and the Understanding of the Cement Placement and In Place Cement Curing for the Well, and the confidence to be part of the meeting to discuss Improvement Features for the next Well in this area is a great opportunity for Drilling and Logging to work toward a Long Time Professional Relationship. 

The benefit for Drilling, who Plans and Designs the Drilling of the Well, and Plans and Designs the Cement Job, to have the added insight from the Logging Company - Cement Placement and Measured In Place Cement Curing. 

From August 1991, to June 2004, 405 CHL Logs were run for 94 Clients for a Wireline Company with twelve Districts and four Sales Offices. For the Salesman that took advantage of the CHL Heading and the addition of the CHL Trace to help develop a Long Time Professional Relationship with his Client, coupled with Reasonable Service, and Competitive Pricing, the long time Jobs and Revenue results are as follows - 

Client No. 1         57 CHL Logs plus the New Well Completion 

Client No. 2         44 CHL Logs plus the New Well Completion 

Client No. 3         35 CHL Logs plus the New Well Completion 

Client No. 4         25 CHL Logs plus the New Well Completion 

Client No. 5         19 CHL Logs plus the New Well Completion 

Client No. 6         15 CHL Logs plus the New Well Completion 

Client No. 7         15 CHL Logs plus the New Well Completion 

Client No. 8         14 CHL Logs plus the New Well Completion 

Client No. 9         12 CHL Logs plus the New Well Completion 

Client No. 10       12 CHL Logs plus the New Well Completion 

Client No. 11       10 CHL Logs plus the New Well Completion 

Client No. 12         9 CHL Logs plus the New Well Completion 

Client No. 13         9 CHL Logs plus the New Well Completion 

Client No. 14         6 CHL Logs plus the New Well Completion 

Client No. 15         6 CHL Logs plus the New Well Completion 

Because of this Professional Relationship, the Salesman also was part of the planning for the Client’s Workover Cased Hole Wireline work, which was additional Jobs and Revenue. If the CHL Trace and CHL Heading are not part of the Cement Evaluation Package available to you insist that they be added to your current Cement Evaluation Package.

Drilling, who Plans and Designs the Drilling of the Well, and Plans and Designs the Cement Job, should have the added insight from the Logging Company - Cement Placement and Measured In Place Cement Curing. 

Someone in the Well Planning and Approval meeting that routinely evaluates measured In Place Cement Curing and knows and understands that complex Cement Recipe are unique and Cement Curing time needs to addressed.

The CHL - CHL Trace and CHL Heading needs to be part of the available Logging Cement Evaluation Package to make the above possible. 

WHAT NEEDS TO BEEN DONE FOR THE CHL - CHL TRACE AND CHL HEADING TO BE MADE AVAILABLE AS A TWO PART CEMENT EVALUATION PACKAGES FOR DRILLING. 

Part One 

The CHL Trace and CHL Heading at the Well Sight -

Wheelis Engineering is in search of a company that provides electric wireline unit operational software for acoustic cement bond logs to discuss entering into a software licensing agreement, adding the CHL Trace software and the CHL Heading software to run simultaneously with the acoustic cement bond log at the well sight. Contact Bill Wheelis AT 1 - 504 - 393 - 0263 or E -mail wwheelis@cox.net.

The programming is needed for the Well Sight CHL Trace and CHL Heading to run the CHL simultaneously with the Bond Log at the Well Sight. 

Part Two 

Before and After the Cement Job at the Clients Office -

The programming is completed for Before and After Job Communication  - the Internet CHL at www.addchl.com 

 

AN EDITORIAL ABOUT THE OFFSHORE BLOWOUT

the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL

OIL WELL CEMENT EVALUATION AND THE DEEPWATER OFFSHORE BLOWOUT 

AN EDITORIAL - 

The importance of having the knowledge and understanding of Measured In Place Cement Curing, most of the time, is not a critical concern, but knowing that sometimes it is, changes everything.

Cement Curing did not need to be a concern -

In the Gulf, all the previously completed Deepwater Wells were Liner completions thru the Production Zone, which then required long tie back strings from the top of the Liner to the Subsea Well Head. The In Place Cement Curing Time for the Liner's Complex Cementing Recipe for the hundreds of feet of high pressure, high perm, high temperature Production Zone, with the 18 #/gal drilling mud in place, was for 78 to 96 hours before the Complex Cementing Recipe was ask to control the differential pressure from reducing the mud weight from 18 #/gal to 12.5 #/gal completion fluid and In Place Cement Curing was not a concern.

Cement Curing did need to be a concern -

On the Deepwater Blowout Well, the Production Casing String Design was changed to a Superior Casing String Design, a Continuous 9 5/8" to 7" Production String from the well's TD to the Subsea Well Head covering all the Well’s Liner overlaps with a continuous string of casing. The Casing Design made for a more complex cement job.  The wiper plug system changed from a two stage system to a three stage system. The Cement Pumping Operation was more complex with the increased volume of the 9 5/8" casing string interval. 

First the Cement Slurry was mixed and pumped separated by a multi stage wiper plug system, followed by the mud pumped thru the Drill Pipe to the Well Head, the long 9 5/8" String, and the 7" Casing to the 7" Float Collar to complete the Production Zone Cement Job.

Immediately after Cement Placement, while the Cement Slurry is curing, with any change in the Well's Hydrostatic Balance, the area of critical concern would be the integrity of the Guide Shoe check valve system with the high volume pumped, any slight over displacement would apply force on the Cement Wiper Plug Assembly that could damage the back flow check valve in the 7” Guide Shoe, which would be very hard to detect, leaving the bottom of the casing vulnerable to back flow until the Cement Slurry has had time to cure.

With this Casing Design and not adjusting the Completion Procedure, the In Place Cement Curing Time for the Complex Cementing Recipe for the hundreds of feet of high pressure, high perm, high temperature Production Zone , with 18 #/gal drilling mud in place, was for only 10 to 12 hours before the Complex Cementing Recipe was ask to control the differential pressure from reducing the mud weight from 18 #/gal to 12.5 #/gal completion fluid and In Place Cement Curing was very much a concern.  

Cement Evaluation has been made very Complex, Controversial, and Political.

The Cement Evaluation Log reflects the quality of the Well Drilled and Cemented and is a direct reflection on the Drilling Department, which makes the Cement Evaluation Logging very Political and Controversial and led to more Complex Cement Evaluation Presentations, that everyone in the room needs extensive training to understand.

The Industry has not insisted that the Cementing Companies and the Logging Companies make the existing Cement Evaluation Packages Technology present and evaluate Cement Placement and Measured In Place Cement Curing as a critical part of the Cement Evaluation Package process to insure that Drilling has this Knowledge and Understanding for the Well's Completion Planning. 

With the the Knowledge and Understanding of Cement Placement and Measured In Place Cement Curing for the Complex Cement Recipes necessary for the Deepwater Wells completed with the 7” Liners thru the high pressure, high perm, high temperature Production Zone on all the previous Deepwater Wells, Drilling's completion plan for the Deepwater Blowout Well's would have insured that In Place Cement Curing would be a concern and be a part of the planning to be sure the well was truly secure before the 18 #/Gal drilling mud was started to be changed out with 12.5 #/gal completion fluid. 

For a Offshore Deepwater Well, changing from a 7” Liner Completion with a 9 5/8” to 7” Tie Back String to a superior Casing String Design a Continuous 9 5/8” to 7” Production String 

In the Final Approval Meetings for changing the Casing String Design, for an improved Continuous Casing String of 9 5/8” and 7” for the Well’s Production String, was In Place Cement Curing Discussed for the Complex Cementing Recipe for the hundreds of feet of high perm, high temperature, geo-pressured Production Zone?

Drilling needs someone in the meeting to approve the continuous 9 5/8” and 7” Casing Design for the Deepwater Blowout Well that routinely evaluates measured In Place Cement Curing and knows and understands that a complex 18 #/gal Cement Recipe needed for the hundreds of feet of high perm, high temperature, geo-pressured Production Zone will not have developed enough compressive strength in 10 to 12 hours to control reducing the Well’s mud weight from 18.0 #/gal to 12.5 #/gal.

 

Cement Curing did not need to be a concern -

In all the other previously completed wells, the 7” liner complex cementing recipe was in place 78 to 96 hours before ask to control the differential pressure from reducing the mud weight from 18 #/gal to 12.5 #/gal completion fluid. On all the previous completed wells after cementing the 7” liner thru the production zone, the rig operations to complete the well, created the in place cement curing time that was required and the importance of in place cement curing for the complex production zone cement recipe was lost – 

Rig Operations with 18.0 #/gal in the Well -

* Set the liner hanger and clean up the cement job at the liner top and come out of the well from 17,000 ft – 10 to 12 hours  

* Trip into the well to 17,000 ft to check and dress the 7” liner top preparing for the tie back casing tie in and trip back out from 17,000 ft – 20 to 24 hours  

* Run the cement evaluation log after 30 to 36 hours of cement curing time – 8 to 10 hours  

* Rig up and run the 11,500 foot 9 5/8” and 7” tie back casing string to the top of the 7” liner at 17,000 ft and tie into the 7" liner top - 36 to 40 hours  

* Hang off the 9 5/8” casing in the well head casing spool and come out of the well from 5,500 ft – 4 to 6 hours  

Cement Curing time with 18 #/gal in the well - 78 to 96 hours

Again, the complex cement recipe for the 7” liner production zone on the previous wells had 78 to 96 hours of in place cement curing time with 18 #/gal mud in the well, created by rig operations to complete the well, allowing the cement to cure enough to control the differential pressure from reducing the mud weight from 18 #/gal to 12.5 #/gal completion fluid. 

Cement Curing did need to be a concern -

With the improved production casing design, all those rig operations were eliminated, and the production zone’s cement job in place cement curing time with 18#/gal mud in the well was greatly reduced. 

Rig Operations with 18.0 #/gal in the Well -

* Hang Off the 9 5/8" Casing for a positive seal in the Subsea Well Head Spool @ 5,230 ft. - 2 to 3 hours

* Come out of the Hole with the 9 5/8" Casing running tool from 5,230 ft. - 3 to 4 hours

* Rig up and start back in the Hole with the Drill Pipe to start chancing out 18.0 #/gal Mud with 12.5 #/gal Completion Fluid 5 hours

Cement Curing time with 18 #/gal in the well - 10 to 12 hours

Without the knowledge and understanding of cement placement and in place cement curing for the complex cement recipe for the 7” liner production zone on the previous wells, Drilling and everyone must have assumed, that when the casing was run, the cement job was complete, and the cement was set, and the well was secure.  

Apparently because of this sinse of security, the change out of the 18 #/gal drilling mud to the 12.5 #/gal completion fluid was started, with the production zone’s cement job in place cement curing time with 18#/gal mud in the well of 10 to 12 hours, without the rig being on high alert, and without a rehearsed well security testing procedure in place. What was the pumping time for the cement recipe used?  

Who made the decision to send the Schlumberger Crew in while the continuous casing string of 9 5/8” and 7” for the well’s production string was being run the day before the blowout? The Schlumberger Crew had been called out to run a cement evaluation log thru the 7” production zone. Was it the recommendation and input of the Schlumberger Engineer at the Rig, because he knew to attempt to run a cement evaluation log over the complex 18 lb/gal cementing recipe for the hundreds of feet of high perm, high temperature, geo-pressured 7” production zone with only 10 to 12 hours of in place cement curing, the cement could not have developed enough cement compressive strength for the cement evaluation log to correctly evaluate in place cement curing and zone isolation thru the critical zone interval for the well’s 7” production zone, and logging 18 lb/gal green cement would be a waste of time?  

With the knowledge and understanding of cement placement and in place cement curing for the complex cement recipe for the 7” liner production zone on the previous wells, Drilling has lots of options to change out the mud and secure the well using the better casing design, the continuous casing string of 9 5/8” and 7” for the well’s production string. 

Not using the knowledge and understanding of cement placement and in place cement curing for the complex cement recipe for the 7” liner production zone on the previous wells, and planning for sufficient in place cement curing time, was much more significant, than only running 6 of the proposed 22 casing centerlizers.

the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL


CHL - CEMENT HYDRAULICS LOG -
A PROVEN, VISUAL, SIMPLE, STRAIGHT FORWARD INTERPRETATION, USING THE 3 FT AMPLITUDE SIGNAL, ADDITION FOR THE BOND LOG AND THE BOND LOG HEADING TO HAVE CEMENT PLACEMENT AND MEASURED IN PLACE CEMENT CURING AT THE TIME THE BOND LOG WAS RUN FOR THE INITIAL UP OR DOWN ZONE ISOLATION MEETING, PLUS DETAILED AFTER JOB ANALYSIS FOR THE DESIGNER OF THE CEMENT JOB.

A CEMENT EVALUATION LOG EVERYONE IN THE ROOM CAN UNDERSTAND.

THE CHL LOG IS A PROVEN PRODUCT WITH OVER FOUR HUNDRED LOGS RUN FOR OVER NINETY DIFFERENT PRODUCTION COMPANIES.

  A somewhat Centered Casing with Uniform Cement Placement and a fast curing Cementing Recipe

 A Cement Job with the Cementing Column Rotating and Spiraling up the Hole and a Slower Curing 6 day Cementing Recipe that will improve with Additional Curing Time

AN EDITORIAL -

RESPONSE TO THE QUESTION – 

In the approval meetings for changing the casing string design, for an improved final continuous casing string of 9 5/8” and 7” for the well’s production string, was in place cement curing discussed for the complex cementing recipe for the hundreds of feet of high perm, high temperature, geo-pressured production zone? 

ANSWER – NO 

In all my years working in the Oil Industry and being a part of casing design approval meetings, in place cement curing has never been part of the approval agenda. Even the Industry Experts at the previous trial did not indicate in place cement curing to be a concern. 

Had we been aware that in place cement curing for the complex cementing recipe necessary for the hundreds of feet of high perm, high temperature, geo-pressure production zone would require 30 to 36 hours to start generating enough cement compressive strength to start controlling the production zone, the completion procedure for securing the well would have been different. 

Such as, the top of the continuous 9 5/8” and 7” production casing string would be hung off in the 9 5/8” casing spool in the well head and secured and tested which is a part of the well head structure, a traditional industry standard. The well’s annular area and casing back side with 18 #/gal drilling mud and cement would be secure from up flow. To secure the bottom of the production string guide shoe and float collar, with the well secure with 18 #/gal drilling mud still in the well, go in the well with a 7” squeeze retainer to check the security of the guide shoe and float collar plus set the cement retainer just above the 7" float collar for additional well security from in flow at the well’s TD from the production zone. 

Then, with the top of the continuous 9 5/8” and 7” production casing string securely hung off in the well head and the bottom of the production casing string guide shoe and float collar secured with the addition of a 7” cement retainer set just above the 7" float collar, the casing string should be secure. With the rig on high alert, and with a rehearsed well security testing procedure, change out the 18 #/gal drilling mud with the 12.5 #/gal completion fluid and finish completing the well. 

QUESTION - 

Why were you not aware of the importance of in place cement curing for the production zone complex cementing recipe necessary for the hundreds of feet of high perm, high temperature, geo-pressure production zone? 

ANSWER – 

The importance of in place cement curing for this complex cementing recipe on all the previous deep water wells, which were 7” liner production strings, was lost because of all the necessary well completion procedures following cementing the liner which gave the impression that in place cement curing was not a concern, such as -  

* Set the liner hanger and clean up the cement job at the liner top and come out of the well from 17,000 ft – 

* Trip into the well to 17,000 ft to check and dress the 7” liner top preparing for the tie back casing tie in and trip back out from 17,000 ft 

* Run the cement evaluation log after 30 to 36 hours of cement curing time * Rig up and run the 11,500 foot 9 5/8” and 7” tie back casing string to the top of the 7” liner at 17,000 ft and tie into the 7" liner top 

* Hang off the 9 5/8” casing in the well head casing spool and come out of the well from 5,500 ft 

This gave the cement 78 to 96 hours of curing time with 18 #/gal drilling mud before the cement was ask to control the production zone differential pressure from reducing the mud weight from 18 #/gal to 12.5 #/gal completion fluid. 

Again, on all the previous completed wells, after cementing the 7” liner thru the production zone, the rig operations necessary to finish completing the well, created the in place cement curing time that was required for well security and in place cement curing concerns was not an issue. 

QUESTION - 

What would be your recommendation of all future deep water completions? 

ANSWER – 

The continuous 9 5/8” and 7” production casing string is a good casing design for continuous pipe from the well head to the well’s TD, top to bottom, covering all the liner sections needed to drill the well to these depths to insure casing integrity for these complex, high production rate very expensive wells. 

But the awareness of cement placement and in place cement curing for the complex cementing recipe necessary for the hundreds of feet of high perm, high temperature, geo-pressure production zones, needs to be an integral part of the planning for the safe completion of the future wells. 

AS A SOLUTION - 

The industry needs to be aware of and have available cement placement analysis and measured in place cement curing as part of the industry’s cement evaluation package. The CHL is existing interpretation technology with a visual, simple, consistent presentation with the CHL Trace for cement zone isolation evaluation and cement placement analysis and the CHL Heading having measured in place cement curing in an easy to understand format. 

The exiting cement evaluation technology evaluates what happens before and after cement placement, but none of the existing cement evaluation Logging packages technology presents and evaluates and measures the in place cement curing process. This technology has not been routinely a part of the available cement evaluation Logging package for the industry, even though it is a critical part of the cement evaluation process to insure the success of the cement job. 

The addition of cement placement analysis and measured in place cement curing as a routine part of the of the cement evaluation Logging package in a proven, visual, simple, consistent log interpretation presentation so everyone in the room can comfortably understand - cement zone isolation evaluation and cement placement analysis and measured in place cement curing - would insure that in place cement curing would be a concern and a part of the completion planning

QUESTION - 

IS THIS REASONABLE ANSWERS TO THE QUESTIONS?

AN EDITORIAL - 

The Cementing Companies main focus is to help design and laboratory test each cement recipes, sell cement and the necessary designed additives for the unique cementing recipe designed for each well, furnish the personnel and the specialized equipment to deliver and mix and pump the cement job at the well sight and does not include in place cement curing analysis. 

The Logging Companies cement evaluation package main focus, as directed by the industry, is toward the up or down cement evaluation meeting immediately after running the well’s cement evaluation log to determine, with the rig waiting, if the cement job is satisfactory or unsatisfactory for zone isolation thru the critical intervals for the well’s production zones which determines the sequence of the rest of the completion steps to continue finishing the completion of the well. This focus does not normally include measured in place cement curing analysis. 

The importance of having the knowledge and understanding of in place cement curing, most of the time, is not a critical concern, but knowing that sometimes it is, changes everything.  

If the CHL - CHL Trace and CHL Trace, had been available and used on the previous 7" Liner wells, maybe different questions would have been asked and the Blowout would have been avoided. 

WHAT HAS TO BE DONE FOR THE CHL - CHL TRACE AND CHL HEADING TO BE MADE AVAILABLE AS PART OF THE CURRENT CEMENT EVALUATION PACKAGES. 

Part One 

The CHL Trace and CHL Heading at the Well Sight -

Wheelis Engineering is in search of a company that provides electric wireline unit operational software for acoustic cement bond logs to discuss entering into a software licensing agreement, adding the CHL Trace software and the CHL Heading software to run simultaneously with the acoustic cement bond log at the well sight. Contact Bill Wheelis AT 1 - 504 - 393 - 0263 or E -mail wwheelis@cox.net.

The programming is needed for the Well Sight CHL Trace and CHL Heading to run the CHL simultaneously with the Bond Log at the Well Sight. 

Part Two 

Before and After the Cement Job at the Clients Office -

The programming is completed for Before and After Job Communication  - the Internet CHL at www.addchl.com 

 

PROGRAMMING TO Add the CHL -

the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL

A CEMENT EVALUATION LOG EVERYONE IN THE ROOM CAN UNDERSTAND.

For the CHL Trace and CHL Heading at the Well Sight -

Wheelis Engineering is in search of a company that provides electric wireline unit operational software for acoustic cement bond logs to discuss entering into a software licensing agreement, adding the CHL Trace software and the CHL Heading software to run simultaneously with the acoustic cement bond log at the well sight. Contact Bill Wheelis AT 1 - 504 - 393 - 0263 or E -mail wwheelis@cox.net.

The programming is needed for the Well Sight CHL Trace and CHL Heading to run simultaneously with the Bond Log at the Well Sight.  

CHL - Cement Hydraulics Log is a proven, visual, simple, straight forward Cement Evaluation interpretation, using the 3 ft amplitude signal. The CHL identifies the 100% Cement Reading for your casing size, casing thickness, and cement compressive strength and couples it with the interpretation cutoff limit for possible 100% solids, Crystalline Cement, for a consistent interpretation in a twenty line display with shading from Black to Grey to White.

The overall CHL display is also designed to give insight into the cement’s job displacement pattern - 

    1. Is the casing center with uniform displacement, 

    2. Is the casing excentered with uniform displacement on the high side, 

    3. Is the cementing column rotating and spiraling up the hole?

If there is a Question with the Cement Job thru the critical intervals for the Well’s Production Zones, does the Channel have continuity to a Zone of unwanted permeability? Is there a continuous 4 LINE WHITE CHANNEL, or larger, to a Zone of Pereability in the critical intervals? 

Cement Placement Analysis and Measured In Place Cement Curing at the time the Bond Log was run –

  A somewhat Centered Casing with Uniform Cement Placement and a fast curing Cementing Recipe

 A Cement Job with the Cementing Column Rotating and Spiraling up the Hole and a Slower Curing 6 day Cementing Recipe that will improve with Additional Curing Time

At the Well Sight with the Rig waiting for a decision, the main focus for the Cement Evaluation Package is toward the Up or Down Cement Evaluation Meeting immediately after running the Well’s Cement Evaluation Log. The CHL Presentation gives the Logging Engineer at the Well Sight and the Company Pusher on the Rig and the Decision Makers at the Up or Down Meeting, a visual, simple, consistent cement evaluation, that everyone can understand, as to whether the Cement Job is Satisfactory or Unsatisfactory for Zone Isolation thru the Critical Intervals for the Well’s Production Zones. A decision made with confidence.  

A quick decision reduces the Rig Standby Time and the Well’s Completion sequence can continue quickly. 

A CEMENT EVALUATION LOG EVERYONE IN THE ROOM CAN UNDERSTAND.

The CHL presentation and the heading’s goal is to give insight into the present cement job and zone isolation on this well with a look toward the next well in this area.


the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL

 THE PROGRAMMING NEEDED TO ADD - 

The CHL Heading and CHL Trace for the Initial CHL at the Well Sight
 

 For the CHL Trace and CHL Heading at the Well Sight -

Wheelis Engineering is in search of a company that provides electric wireline unit operational software for acoustic cement bond logs to discuss entering into a software licensing agreement, adding the CHL Trace software and the CHL Heading software to run simultaneously with the acoustic cement bond log at the well sight. Contact Bill Wheelis AT 1 - 504 - 393 - 0263 or E -mail wwheelis@cox.net.

The programming is needed for the Well Sight CHL Trace and CHL Heading to run simultaneously with the Bond Log at the Well Sight.   

 

CHL LOG EXAMPLES AND POWER POINTS PRESENTATIONS -

the CHL TRACE ... a visual, simple, consistent cement evaluation

    GAMMA RAY         3 FT AMPLITUDE       CHL TRACE            5 FT VDL

THE CHL LOG -

>
 

CHL LOG EXAMPLES & POWER POINT PRESENTATIONS

  1. CHL LOG NO. 1
    CHL HEADING, FREE PIPE SECTION,
    MAIN LOG SECTION, REPEAT SECTION,
    AND THREE HYDRAULIC PATTERNS TAIL
  2. CHL LOG NO. 2
    CHL HEADING, MAIN LOG SECTION,
    WITH CHL, 3FT AMPLITUDE, SECTOR,
    AND VDL SIDE BY SIDE DISPLAYS
  3. COMPLETE CHL HEADING
  4. THE CHL BOOKLET
  5. CHL THEORY
  6. WELL CONFIGURATION AND CEMENT JOB TYPE
  7. CEMENT PLACEMENT
  8. CEMENT CURING
  9. IN PLACE ANALYSIS
  10. CEMENT WITH ADDED SURFACE PRESSURE
  11. FREE WATER
  12. SECTORS
  13. COMBINATION CHL SECTOR LOGS
  14. CEMENT REPAIR
  15. FOAM CEMENT
  16. BOND LOG QUALITY CHECKS
  17. THE CHL INTERPRETATION APPROACH
    TO HELP IMPROVE AND UPDATE THE SIGHT
    E-MAIL YOUR SUGGESTIONS AND COMMENTS
    TO - wwheelis@cox.net

FOR A REVIEW THE CHL CEMENT EVALUATION INTERPRETATION APPROACH THAT CAN BE ADDED TO YOUR PRESENT CEMENT EVALUATION PACKAGE ACTIVATE THIS ATTACHED POWER POINT PRESENTATION.

  1. THE CHL INTERPRETATION APPROACH

ANY QUESTIONS ABOUT THE CHL INTERPRETATION APPROACH, AND THE CHL INTERNET PROGRAM CONTACT BILL WHEELIS AT WHEELIS ENGINEERING, LTD, PHONE NUMBER 1 – 504 – 393 –0263 OR E-MAIL wwheelis@cox.net.

THE CHL LOG IS A PROVEN PRODUCT WITH OVER FOUR HUNDRED LOGS RUN FOR OVER NINETY DIFFERENT PRODUCTION COMPANIES. 

THE CHL WILL BE AN ASSET TO SERVICE COMPANIES BY - 

1. ASSISTING AND ADDING CONFIDENCE IN THE INITIAL ZONE ISOLATION DETERMINATION FOR EACH WELL. 

2. THE CHL LOG AND PROGRAM IS A TRAINING AND TEACHING AID FOR BETTER UNDERSTANDING OF OIL WELL CEMENTING FOR A BETTER CEMENT EVALUATION INTERPRETATION. 

3. THE TRAINING AND TEACHING CAN BE REVIEWED THRU THE CHL WEBSITE SCREENS AND THE ABOVE POWER POINT PRESENTATIONS. 

4. THE CHL PROGRAM HAS THE POTENTIAL TO HELP CREATE DIALOGUE BETWEEN PARTIES FOR COMMUNICATION TO HELP ESTABLISH A RELATIONSHIPS FOR SUCCESS FOR BOTH THE PRODUCTION COMPANY AND WIRELINE SALES WITH BETTER CEMENTING JOBS ON FUTURE WELLS. 

5. HELP EACH SERVICE COMPANY’S GOAL TO INCREASE MARKET SHARE AND CASED HOLE REVENUE IN THE NEW WELL COMPLETION MARKET. 

FOR THE CEMENT JOB DESIGNER - 

AND THE PRODUCTION COMPANIES DOING CEMENT EVALUATION FIELD STUDIES BEFORE THE NEXT NEW WELL COMPLETION, THE CHL OFFERS - 

1. ASSISTING AND ADDING CONFIDENCE IN THE INITIAL ZONE ISOLATION DETERMINATION FOR EACH WELL. 

2. THE CHL MEASURES AND DOCUMENTS THE CEMENTING RECIPE’S CURING PERCENTAGES AT THE TIME OF THE LOG. 

3. THE CHL CONSISTENTLY MEASURES THE CEMENT DISPLACEMENT EFFICIENCY PERCENTAGE. 

4. THE PROGRAM OUTLINES THE RELATIONSHIP BETWEEN THE CEMENT TOPS AND THE HOLE SIZE. 

5. THE CHL ISOLATION ZONE SECTION DOCUMENTS THE CRITICAL INTERVALS OF INTEREST. 

6. IF THERE WAS A SQUEEZE JOB, THE CHL SQUEEZE ANALYSIS SECTION DOCUMENTS THE CEMENT REPAIR EVALUATION. 

7. THE CHL HEADING DOCUMENTS THE CEMENT JOB. 

THE CHL HELPS ORGANIZE THE CRITICAL AREAS OF CONCERNS FOR THE FIELD STUDY TO HELP PLAN THE NEXT NEW WELL COMPLETION.

CEMENTING JOB AND RECIPE EVALUATION  -

DID THE PLANNED CEMENT JOB, WITH THE SELECTED CEMENTING RECIPE, PERFORM AS DESIGNED AND INTENDED WHEN PUMPED UNDER THE PLACEMENT HYDRAULICS CONDITIONS FOR CEMENT PLACEMENT? DID THE IN PLACE CEMENT SLURRY CURE AS DESIGNED IN THE ENVIRONMENT OF THIS WELL AND THIS AREA? 

THE CHL INTERPRETATION APPROACH INCLUDES IDENTIFICATION OF THE THREE HYDRAULIC PLACEMENT PATTERNS AND THE MEASURE OF DISPLACEMENT EFFICIENCY TO PROVIDE UNDERSTANDING OF THE HYDRAULICS OF THE CEMENT JOB. 

FOR MEASURED IN PLACE CEMENT CURING, THE CHL MEASURES A CURING COMPRESSIVE STRENGTH ANALYSIS AT THE TIME THE LOG WAS RUN ACCORDING TO THE WELL’S CASING SIZE, CASING WEIGHT, AND CEMENT WEIGHT. 

THE CHL FOR UNDERSTANDING AND KNOWLEDGE FOR THE CEMENTING RECIPE’S PERFORMANCE IN THE WELL CONDITIONS AND ENVIRONMENT OF THIS WELL AND WELLS IN THIS AREA TO REVIEW CEMENT, CEMENT SLURRIES, CEMENT PLACEMENT HYDRAULICS, AND IN PLACE CEMENT CURING, OPEN THE CEMENT CURING POWER POINT PRESENTATION – 

THE CEMENT CURING POWER POINT PRESENTATION  

THE OBJECTIVE OF THE CHL IS TO ASSIST THE CEMENT JOB DESIGNER EVALUATE THE CEMENT JOB DESIGN FOR CEMENT PLACEMENT AND THE CEMENTING RECIPE FOR IN PLACE CEMENT CURING AT THE TIME THE LOG WAS RUN ON THE WELL LOGGED. UNDERSTANDING AND KNOWLEDGE FOR THE CEMENT JOB DESIGN FOR THE NEXT WELL IN THE AREA.

  A somewhat Centered Casing with Uniform Cement Placement and a fast curing Cementing Recipe

 A Cement Job with the Cementing Column Rotating and Spiraling up the Hole and a Slower Curing 6 day Cementing Recipe that will improve with Additional Curing Time


ALSO THE QUESTION OF WELL PRODUCTION - 

WHAT RATE SHOULD BE PRODUCING

                         VS  

WHAT RATE IS PRODUCING ANALYSIS  

USING POROSITY AND WATER SATURATION FOR PERM INDICATIONS TO GET THE SOUGHT AFTER DOWNHOLE KH VALUE

AN EXCEL SPREADSHEET FOR BOTH OIL WELLS AND GAS WELLS TO ORGANIZE THE PRESENTATION OF THE LOG INDICATED IDEAL DOWNHOLE PRODUCTION RATE CONVERTED TO THE SURFACE RATE AND FLOWING PRESSURE FOR COMPARISON TO THE WELL TEST SURFACE RATE AND FLOWING WELL HEAD PRESSURE 

* COMPLETION INTERVAL DEPTHS 

* BOTTOM HOLE PRESSURE SELECTION 

* FLUID DATA AND FLUID PARAMETERS 

* POROSITY AND WATER SATURATION FOR PERM INDICATIONS 

* KH AND KH FLOWING PROFILE 

* RESERVOIR PRODUCTION RATE FOR SELECTED RESERVOIR DRAWDOWN USING DARCY, VOGEL – DARCY, AND JONES IPR 

* MATCHING THE RESERVOIR DOWNHOLE RATE WITH THE WELL’S COMPLETION HARDWARE USING NODAL ANALYSIS FOR THE MATCHING SURFACE RATE AND FLOWING PRESSURE

EXAMPLE OF THE EXCEL SPREADSHEET FOR AN OIL WELL –

QUESTION FOR THIS OIL WELL WITH TWO HIGH PERM LENSES, 

ARE BOTH LENSES FLOWING AT INITIAL PRODUCTION?

FOR A COPY OF THE EXCEL SPREADSHEET ONE FOR OIL WELLS AND ONE FOR GAS WELLS E-MAIL wwheelis@cox.net. THE TWO EXCEL FILES WILL BE ATTACHED TO THE REPLY.

 

OIL FIELD CONSULTING SERVICES -

WHEELIS ENGINEERING, LTD 

609 ADEE LANE 

GRETNA, LOUISIANA 70056

FIELD STUDY OR LEASE EVALUATION HELP –

OPEN HOLE LOGS ANALYSIS

CEMENT AND ZONE ISOLATION ANALYSIS FOR

NEW WELL COMPLETION, OR WELL WORKOVER 

ILLUSTRATED ON THIS WEBSITE – www.chllogs.com

FIELD STUDY OR LEASE EVALUATION HELP -

LOG KH, FLUID, PRESSURE, AND PRODUCTION ANALYSIS 

FOR REVENUE EVALUATION 

DONE CONSISTENTLY IN A EXCEL SPREAD SHEETS FORMAT 

CONSULTING RATES -

WORKING IN MY OFFICE - $600.00 PER DAY OR $300.00 PER HALF a DAY 

WORKING AT YOUR OFFICE - $900.00 PER DAY OR $600.00 PER HALF a DAY 

CONTACT -

BILL WHEELIS PHONE – 1 - 504 – 393 – 0263 E-MAIL – wwheelis@cox.net

LOOKING AT WELLS WITH QUESTIONABLE PRODUCTION 
---- START YOUR EVALUATION HERE!!!

ON WELLS WITH QUESTIONABLE PRODUCTION, WHAT WOULD BE THE FLUID FLOW MECHANICS
OF A PRODUCING CHANNEL?? 

1. CHANNEL WIDTH 

2. CHANNEL LENGTH AND CONFIGURATION 

3. CHANNEL CONTINUITY 

4. PRESSURE DIFFERENTIAL AVAILABLE FOR FLOW 

5. CHANNEL FLOW RATE 

START THE RESEARCH BY REFRESHING THE CEMENT EVALUATION PACKAGE FOR THE WELL USING
THE CHL PROGRAM FOR THE – 

1. CHANNEL WIDTH FROM THE CHL 

2. CHANNEL LENGTH AND CONFIGURATION FROM THE CHL 

3. CHANNEL CONTINUITY FROM THE CHL CEMENT PLACEMENT HYDRAULICS UNDERSTANDING THEN ADD THE DIFFERENTIAL PRESSURE AND THE FLOW RATE TO ESTABLISH IF THE FLUID
FLOW MECHANICS CONDITIONS ARE SUITABLE FOR CHANNEL FLOW. 

E-MAIL THE FOLLOWING TO wwheelis@cox.net  

1. THE OPEN HOLE LOG – RESISTIVITY AND POROSITY FOR THE PRODUCTION INTERVAL 

2. ZONE’S PRESSURE DATA – INITIAL SHUT IN BOTTOM HOLE PRESSURE,
PRESENT SHUT IN BOTTOM HOLE PRESSURE, PRESENT PRODUCTION
RATE, AND FLOWING BOTTOM HOLE PRESSURE 

3. THE MAIN CEMENT EVALUATION LOG FILE IN A PBM OR A PDF FORMAT 

4. THE CORRESPONDING LAS DATA FILE FOR THE MAIN CEMENT
EVALUATION LOG WITH THE DEPTH AND THE 3 FT AMPLITUDE VALUES 

5. THE WELL SKETCH DATA – CASING SIZE, CASING WEIGHT, AND
CEMENT WEIGHT THRU THE PRODUCTION INTERVAL. 

THE CHL TRACE WILL BE INSERTED ON TO THE MAIN CEMENT EVALUATION LOG
FILE WHICH INDICATES CHANNEL SIZE, CHANNEL LENGTH, CHANNEL CONFIGURATION, AND CHANNEL CONTINUITY. THE RESULTS AND INTERPRETATION WILL BE PROMPTLY RETURNED FOR YOUR DETERMINATION IF THE EXISTING FLUID FLOW MECHANICS CONDITIONS MAKE IT POSSIBLE FOR
FLUID FLOW THRU A CHANNEL INTO THE PRODUCTION PERFORATIONS.

ADDING THE CHL TRACE AND THE CHL HEADING FOR THE CHL INTERPRETATION APPROACH TO YOUR CEMENT EVALUATION PACKAGE CAN BE EASILY DONE.

THE EASY TO RUN, INTERACTIVE CHL TRACE AND CHL HEADING PROGRAM, IS AVAILABLE AT THE WEBSITE www.addchl.com

TO REVIEW THE FEATURES OF THE CHL INTERNET PROGRAM AND THE SCREEN SEQUENCE OF THE CHL PROGRAM DISCUSSED ABOVE, CHECK THE REVIEW CHL PROGRAM BUTTON.

THE OPERATING INSTRUCTIONS ARE AS FOLLOWS:

OPERATING INSTRUCTIONS CAN ALWAYS BE IMPROVED.  IF WHEN USING THESE INSTRUCTIONS
SHOULD YOU HAVE ANY SUGGESTED IMPROVEMENTS, PLEASE E-MAIL THE IMPROVEMENTS.
WHEN THEY ARE ADDED TO THE OPERATING INSTRUCTIONS, THEN IN THE FUTURE EVERYONE
CAN TAKE ADVANTAGE OF YOUR SUGGESTED IMPROVEMENTS.


AT THE WELL SIGHT SETUP AND RUN THE CEMENT EVALUATION LOG -

WHEN RUNNING A CEMENT EVALUATION LOG, BE SURE AND ALWAYS LOG THE CEMENT TOPS SO THE CLIENT CAN ALSO ANALYZE THE CEMENT JOB’S PLACEMENT HYDRAULICS. 

CEMENT TOPS CAN BE IN ONE OF THREE PLACES - 

1. IN THE OPEN HOLE INTERVAL 

2. IN THE CASING OVERLAP INTERVAL, OR 

3. AT THE SURFACE WITH BARRELS OF CEMENT TO SURFACE 

IF THE CEMENT DATA IS AVAILABLE AND YOU HAVE TIME AT THE WELL SIGHT, USE THE FIRST FOUR SCREENS OF ONE OF THE JOB STRUCTURE’S PROGRAM TO CALCULATE THE CEMENT TOPS TO HELP ORGANIZE THE LOGGING JOB

AT THE WELL SIGHT TO ADD THE CHL TRACE AND THE CHL HEADING -

SET UP A FOLDER ON YOUR COMPUTER FOR THE WELL TO BE ANALYZED. PLACE THE WELL’S MAIN LOG SECTION PDF FILE OR THE WELL’S MAIN LOG SECTION PBM FILE IN THE FOLDER. THEN, ADD THE LAS FILE FOR THE MAIN LOG SECTION WITH THE WELL DEPTH AND THE 3 FT AMPLITUDE DATA IN THE WELL’S FOLDER. 

LOG ON TO THE INTERNET AND GO TO www.addchl.com. ENTER YOUR USER NAME AND PASSWORD AND LOG ON TO THE CHL PROGRAM. 

PROGRAM NOTE: WHEN LOGGING IN, IF THE PROGRAM DOES NOT MOVE TO THE MAIN CHL PROGRAM SCREEN, CHECK THE POP-UP BLOCKER. SET THE POP-UP BLOCKER TO OPEN - "SITE POP-UP ALLOWED".  

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 1 JOB STRUCTURE  

ON THE FIRST JOB STRUCTURE SCREEN AT TYPE OF CASING COMPLETION, SELECT ONE OF THE FOLLOWING: 

1. FIRST PASS CHL 

2. PRODUCTION CASING CEMENTING 

3. LINER CEMENTING 

4. PRODUCTION CASING WITH STAGE COLLAR CEMENTING 5. PRODUCTION CASING WITH BRADENHEAD CEMENTING 

NOTE: THE JOB STRUCTURE CONTAINS THE SEQUENCE OF CHL SCREENS FOR THE WELL AND CEMENT JOB SELECTED. 

FOR JOBS, AT THE WELL SIGHT WITH LIMITED WELL AND CEMENTING DATA AVAILABLE -  

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 1 JOB STRUCTURE  

ON THE FIRST JOB STRUCTURE SCREEN AT TYPE OF CASING COMPLETION, SELECT - 

1. FIRST PASS CHL  

NOTE: THE JOB STRUCTURE - FIRST PASS CHL - REQUIRES MINIMUM WELL DATA AND CEMENT DATA INPUTS. 

PROGRAM NOTE: NORMALLY, THE LIS NAME FOR THE 3 FT AMPLITUDE FOR MOST LOGGING TOOLS IS “AM3F” WHICH IS THE DEFAULT FOR THE PROGRAM. IF YOU HAVE ANY PROBLEMS CREATING THE CHL TRACE IN STEP NO. 3 “PROCESS LOG”, CHECK THE LAS FILE IN NOTEPAD FOR THE WELL’S 3 FT AMPLITUDE LIS NAME. ON THE FIRST JOB STRUCTURE SCREEN, VERIFY THE LIS NAME FOR THE 3 FT AMPLITUDE IS INPUT CORRECTLY.  

FROM THE JOB TICKET –  

PRODUCTION CASING SIZE (INCHES) 

WELL DEPTH (FT) 

CASING SETTING DEPTH – GUIDE SHOE SET @ (FT) 

FLOAT COLLAR – PBTD @ (TD FOR THE LOG) (FT) 

(SHOULD BE ONE TO TWO JOINTS ABOVE THE GUIDE SHOE) 

SELECTED CASING WEIGHT FOR THE LOG (SELECT CASING WEIGHT AT WELL’S TD (#/FT) 

1. SCREEN NO 1 - INPUT WELL DATA –  

CASING SIZE 

WELL DEPTH 

CASING SETTING DEPTH 

FLOAT COLLAR – PBTD 

LOGGING MUD WEIGHT 

CASING WEIGHT - THE WEIGHT AT WELL’S TD 

CEMENTING DATA –  

NOTE: DETERMINE FROM THE CLIENT, IF THE WELL IS A SINGLE CEMENT JOB, OR ARE A TWO CEMENT JOB. 

CEMENT WEIGHT @ WELL’S TD (#/GAL) CEMENT SACKS (SKS) CEMENT VOLUME FACTOR (CUFT/SKS) NOTE: IF NO CEMENTING DATA IS AVAILABLE AT THIS TIME – SELECT THE CEMENT WEIGHT – 16.0 #/GAL 

CEMENT WEIGHT INPUT –  

IF FURNISHED BY THE CLIENT, INPUT THE CEMENT WEIGHT AT THE WELL'S TD OR SELECT A SUITABLE CEMENT WEIGHT FROM THOSE SUGGESTED ON THE INPUT SCREEN. 

CEMENT CURING TIME -

FROM OPEN HOLE TIE IN LOG - MONTH/DAY/YEAR

INPUT ESTIMATED CEMENT TIME IN DAYS

2. SCREEN NO. 2 - WELL DATA  

CHECK INPUT DATA 

3. SCREEN NO. 3 – LOG CHECK AND QUALITY CONTROL VALUES  

TOOL DATA 

FLUID DATA 

FORMATION DATA 

CASING DATA 

4. SCREEN NO. 4 - LOG CHECK AND QUALITY CONTROL VALUES  

CHECK TOOL VALUES 

5. SCREEN NO. 5 – CHL LOGGING PARAMETERS  

CHECK VALUES RETURN TO THE MAIN CHL PROGRAM SCREEN 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 3. PROCESS LOG - TIME REQUIRED 30 TO 90 SECONDS 

1. BROWSE TO THE WELL’S FOLDER AND SELECT THE MAIN LOG SECTION LAS FILE. 

2. SELECT THE LOGGING COMPANY THAT RAN THE LOG TO SET THE PRE-SET STRETCH FACTOR AND WIDEN FACTOR. 

NOTE: THIS IS TO MATCH THE LOG’S DISPLAY DENSITY TO THE CHL’S DISPLAY DENSITY OF 200 PIXELS PER INCH 

3. SELECT DESIRED TRACK FORMAT – 3 TRACK OR 4 TRACK 4. CREATE CHL TRACK. 

NOTE: THIS CREATES THE CHL TRACE IMAGE TO BE PASTED TO THE MAIN LOG SECTION LATER. THE PROCESS NORMALLY TAKES ABOUT 30 TO 90 SECONDS. THE SCREEN WILL BE FILLED WITH DEPTH NUMBERS AS THE PROCESS RUNS. WHEN THE PROCESS IS COMPLETED, THE PROGRAM RETURNS TO THE MAIN CHL SCREEN. 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 4. INTEGRATION RESULTS THE INTEGRATION SCREEN SHOULD BE FILLED WITH NUMBERS INDICATING THE LOG SECTION WAS PROPERLY PROCESSED. 

1. RETURN TO THE MAIN CHL PROGRAM SCREEN. 

PROGRAM NOTE: IN NO. 3. CREATE THE CHL TRACE, IF THE DEPTH NUMBER DID NOT APPEAR AND IN NO. 4 INTEGRATIONS RESULTS SCREEN IS NOT POPULATED, OPEN THE LOG’S LAS FILE IN NOTEPAD AND VERIFY THAT THE LAS NAME FOR THE 3 FT AMPLITUDE ON THE LOG’S LAS FILE AND LAS PROGRAM INPUT JOB STRUCTURE SCREEN ARE THE SAME.  

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 5. PLOT HEADER INSERTS - TIME REQUIRED 30 TO 90 SECONDS 

1. BROWSE TO THE WELL’S FOLDER AND SELECT THE MAIN LOG SECTION PDF OR PBM FILE 

2. CREATE HEADERS. CHECK THE CHL HEADING DATA INPUTS 

3. SUBMIT HEADERS. 

NOTE: THIS PROCESS ADDS THE CHL HEADING IMAGES TO THE MAIN LOG SECTION. THE PROCESS NORMALLY TAKES ABOUT 30 TO 90 SECONDS. ON THE LEFT OF THE SCREEN THE HEADING INSERTS WILL APPEAR AS THEY ARE SUBMITTED. WHEN THE PROCESS IS COMPLETED, THE PROGRAM RETURNS TO THE MAIN CHL SCREEN 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 6. MERGE LOG RESULTS - TIME REQUIRED 30 TO 90 SECONDS TO LOAD SCREEN 

NOTE: FOR THE LOG WITH THE CHL HEADING IMAGES AND THE MAIN LOG SECTION TO BE TRANSFERRED TO YOUR COMPUTER, IT WILL TAKE ONE TO TWO MINUTES. 

1. FOLLOW THE INSTRUCTIONS ON THE SCREEN AND OVERLAY THE CHL TRACE IMAGE AT THE CORRECT DEPTH, PLUS ADD THE CHL SCALES AT THE TOP AND BOTTOM OF THE CHL TRACE IMAGE TO COMPLETE THE LOG. NOTE: THE CHL TRACE IS A LARGE FILE AND WILL TAKE A 30 TO 90 SECONDS TO APPEAR. 

2. RETURN TO THE TOP OF THE CHL SCREEN AND SAVE CHANGES TO FILE. THE PROGRAM RETURNS TO THE MAIN CHL SCREEN 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 7. VIEW FINAL RESULTS - TIME REQUIRED 30 TO 90 SECONDS TO LOAD SCREEN 

1. REVIEW THE LOG RESULT. NOTE: FOR THE FINAL LOG WITH THE CHL HEADING IMAGES AND CHL TRACE IMAGE ADDED TO THE MAIN LOG SECTION TO COME UP, IT WILL TAKE ONE TO TWO MINUTES. 

2. IF THE LOG IS SATISFACTORY, DOWNLOAD THE FINAL LOG AS A PDF OR A PBM FILE INTO THE WELL’S FOLDER. 

3. RETURN TO THE MAIN CHL PROGRAM SCREEN. 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 8 SAVE DATA INPUTS  

1. PASTE THE DATA INPUT DATA TO A NOTEPAD TEXT FILE AND SAVE IT IN THE WELL’S FOLDER. 

NOTE: ON CHL LOG UPDATES FOR THIS WELL, THE DATA CAN BE RESTORED TO THE PROGRAM FOR EDITING AND ADDITIONS WITHOUT HAVING TO RE-TYPE EACH SCREEN’S DATA INPUT. 

2.RETURN TO THE MAIN CHL SCREEN. 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

LOG OFF  

TO END CHL LOGGING SESSION 

THE WELL’S FOLDER SHOULD BE COMPLETE WITH THE FOLLOWING FILES – 

1. LAS FILE OF THE MAIN LOG SECTION WITH DEPTH AND THE 3 FT AMPLITUDE 

2. PDF FILE OF THE MAIN LOG SECTION 

3. TEXT FILE OF THE DATA INPUTS USED 

4. PDF FILE OF THE FINAL LOG WITH THE CHL TRACE AND HEADING 

E-MAIL THE FOLDER TO SALES AND THE CLIENT FOR THE UP OR DOWN CEMENT EVALUATION MEETING. THE CHL JOB IS FINISHED AT THE WELL SIGHT.

CHL CEMENT DISCUSSION  POINTS -

THE VOLUME OF CEMENT PUMPED MATCHED TO THE VOLUME OF THE HOLE

CEMENT TOPS CAN BE IN THREE PLACES - 

1. IN THE OPEN HOLE INTERVAL 

2. IN THE CASING OVERLAP INTERVAL, OR 

3. AT THE SURFACE WITH BARRELS OF CEMENT TO SURFACE 

CEMENT – 

THE VOLUME OF CEMENT = NUMBER OF SACKS X THE CEMENT VOLUME FACTOR (CUFT/SACK) 

1. A SINGLE CEMENT SYSTEM – FIRST CEMENT  

2. A TWO CEMENT SYSTEM WITH A LEAD CEMENT AND A TAIL CEMENT - SECOND CEMENT 

HOLE DIAMETERS -

1. DIAMETER WITH 20% WASHOUT 

2. DIAMETERS CALCULATED FROM CEMENT TOPS – THE HYDRAULIC WELL DIAMETERS 

3. DIAMETERS MEASURED FROM THE OPEN HOLE LOG CALIPER 

THE CHL PROGRAM SCREENS ARE SETUP TO HELP CALCULATE THE CEMENT TOPS AND HOLE DIAMETERS FOR THE CHL HEADING. 

1. WELL DATA AND CEMENT DATA INPUT S FOR THE - 20% WASHOUT – DIAMETER 

THE CEMENT TOPS ON THE NEXT SCREEN ARE BASED ON AN ESTIMATED HOLE SIZE WITH 20% WASHOUT – DIAMETER NO. 1. 

2. LOGGED CEMENT TOP DATA INPUTS FOR THE – HYDRAULIC DIAMETER  – 

ON THE NEXT SCREEN THE LOGGED CEMENT TOPS INPUTS DETERMINE THE HYDRAULIC HOLE SIZES – DIAMETERS NO. 2. 

3. OPEN HOLE LOG CALIPER DATA FOR THE MEASURED HOLE DIAMETER TO DETERMINE CEMENT TOPS 

1. INPUT AN INTERVAL 500 FT ABOVE UPPER MOST PAY ZONE

2. INPUT THE MEASURED HOLE VOLUME FOR THAT INTERVAL 

3. THE MEASURED HOLE DIAMETER FOR THAT INTERVAL WILL BE CALCULATED – DIAMETER NO. 3

4. FROM THE 20% WASHOUT DIAMETER, THE HYDRAULIC DIAMETER & THE HOLE VOLUME DIAMETER

INPUT THE MOST CORRECT HOLE DIAMETER FOR THE MOST CORRECT CEMENT TOPS FOR THE WELL CONDITIONS FROM ONE OF THE FOLLOWING - 

1. INPUT DIAMETER NO. 1 – 20% WASHOUT DIAMETER 

2. INPUT DIAMETER NO. 2 – HYDRAULIC DIAMETERS FROM LOGGED CEMENT TOPS 

3. INPUT DIAMETER NO. 3 – HOLE VOLUME DIAMETERS FROM CALIPER DATA

ON JOBS, WITH CLIENT EXCHANGE AND INPUT BEFORE AN INITIAL CHL OR THE FOLLOW UP SALES CALL WITH THE CLIENT THAT DESIGNED THE CEMENT JOB -

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 1 JOB STRUCTURE ON THE FIRST JOB STRUCTURE SCREEN AT TYPE OF CASING COMPLETION, SELECT ONE OF THE FOLLOWING: 

2. PRODUCTION CASING CEMENTING 

3. LINER CEMENTING 

4. PRODUCTION CASING WITH STAGE COLLAR CEMENTING 

5. PRODUCTION CASING WITH BRADENHEAD CEMENTING 

PROGRAM NOTE: NORMALLY, THE LIS NAME FOR THE 3 FT AMPLITUDE FOR MOST LOGGING TOOLS IS “AM3F” WHICH IS THE DEFAULT FOR THE PROGRAM. IF YOU HAVE ANY PROBLEMS CREATING THE CHL TRACE IN STEP NO. 3 “PROCESS LOG”, CHECK THE LAS FILE IN NOTEPAD FOR THE WELL’S 3 FT AMPLITUDE LIS NAME. ON THE FIRST JOB STRUCTURE SCREEN, VERIFY THE LIS NAME FOR THE 3 FT AMPLITUDE IS INPUT CORRECTLY.  

AT THE JOB STRUCTURE SCREEN - "INPUT WELL DATA"-  

INPUT THE FOLLOWING: 

1. FROM THE JOB TICKET – PRODUCTION CASING SIZE (INCHES) 

WELL DEPTH (FT) 

CASING SETTING DEPTH – GUIDE SHOE SET @ (FT) 

FLOAT COLLAR – PBTD @ (TD FOR THE LOG) (FT) (SHOULD BE ONE TO TWO JOINTS ABOVE THE GUIDE SHOE) 

2. SELECTED CASING WEIGHT FOR THE LOG 

(SELECT CASING WEIGHT AT WELL’S TD (#/FT) 

3. FROM THE TIE-IN OPEN HOLE LOG HEADING SURFACE OR INTERMEDIATE CASING SIZE (INCHES) SETTING DEPTH - SURFACE OR INTERMEDIATE CASING GUIDE SHOE DEPTH (FT) BIT SIZE (INCHES)

NOTE: THE PROGRAM NEEDS THE BIT SIZE DATA TO BE ABLE TO CALCULATE THE INITIAL CEMENT TOPS. 

4. CEMENTING DATA – 

NOTE: DETERMINE WITH THE CLIENT, IF THE WELL HAS A SINGLE CEMENT JOB OR A TWO CEMENT JOB. 

CEMENT WEIGHT @ WELL’S TD (#/GAL) 

CEMENT SACKS (SKS) 

CEMENT VOLUME FACTOR (CUFT/SKS) 

NOTE: IF NO CEMENTING DATA IS AVAILABLE AT THIS TIME USE – CEMENT WEIGHT – 16.0 #/GAL CEMENT SACKS – 100 SKS 

5. PROCEED THRU THE REST OF THE JOB STRUCTURE SCREENS AND INPUT REQUESTED DATA AS AVAILABLE UNTIL YOU ARE BACK AT THE MAIN CHL PROGRAM SCREEN. 

NOTE: IF THE REQUESTED DATA IS NOT AVAILABLE AT THIS TIME, SKIP THE SCREEN AND PROCEED TO THE NEXT SCREEN. LATER, WITH CLIENT INPUT MORE DATA CAN BE INCLUDED. 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 3. PROCESS LOG 

1. BROWSE TO THE WELL’S FOLDER AND SELECT THE MAIN LOG SECTION LAS FILE. 

2. SELECT THE LOGGING COMPANY THAT RAN THE LOG TO SET THE PRE-SET STRETCH FACTOR AND WIDEN FACTOR. 

NOTE: THIS IS TO MATCH THE LOG’S DISPLAY DENSITY TO THE CHL’S DISPLAY DENSITY OF 200 PIXELS PER INCH. 

3. SELECT DESIRED TRACK FORMAT – 3 TRACK OR 4 TRACK 

4. CREATE CHL TRACK. 

NOTE: THIS CREATES THE CHL TRACE IMAGE TO BE PASTED TO THE MAIN LOG SECTION LATER. THE PROCESS NORMALLY TAKES ABOUT A MINUTE. THE SCREEN WILL BE FILLED WITH DEPTH NUMBERS AS THE PROCESS RUNS. 

WHEN THE PROCESS IS COMPLETED, THE PROGRAM RETURNS TO THE MAIN CHL SCREEN. 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 4. INTEGRATION RESULTS 

THE INTEGRATION SCREEN SHOULD BE FILLED WITH NUMBERS INDICATING THE LOG SECTION WAS PROPERLY PROCESSED. 

1. RETURN TO THE MAIN CHL PROGRAM SCREEN. 

PROGRAM NOTE: IN "NO. 3. CREATE THE CHL TRACE", IF THE DEPTH NUMBER DID NOT APPEAR AND IN "NO. 4 INTEGRATIONS RESULTS", IF THE SCREEN IS NOT POPULATED, OPEN THE LOG’S LAS FILE IN NOTEPAD AND VERIFY THAT THE LAS NAME FOR THE 3 FT AMPLITUDE ON THE LOG’S LAS FILE AND LAS PROGRAM INPUT ARE THE SAME.  

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 5. PLOT HEADER INSERTS 

1. BROWSE TO THE WELL’S FOLDER AND SELECT THE MAIN LOG SECTION PDF OR PBM FILE 

2. CREATE HEADERS. CHECK THE CHL HEADING DATA INPUTS 

3. SUBMIT HEADERS. 

NOTE: THIS PROCESS ADDS THE CHL HEADING IMAGES TO THE MAIN LOG SECTION. THE PROCESS NORMALLY TAKES ABOUT A MINUTE. ON THE LEFT OF THE SCREEN THE HEADING INSERTS WILL APPEAR AS THEY ARE SUBMITTED. 

WHEN THE PROCESS IS COMPLETED, THE PROGRAM RETURNS TO THE MAIN CHL SCREEN 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 6. MERGE LOG RESULTS 

NOTE: FOR THE LOG WITH THE CHL HEADING IMAGES AND THE MAIN LOG SECTION TO BE TRANSFERRED TO YOUR COMPUTER, IT WILL TAKE ONE TO TWO MINUTES. 

1. FOLLOW THE INSTRUCTIONS ON THE SCREEN AND OVERLAY THE CHL TRACE IMAGE AT THE CORRECT DEPTH, PLUS ADD THE CHL SCALES AT THE TOP AND BOTTOM OF THE CHL TRACE IMAGE TO COMPLETE THE LOG. 

NOTE: THE CHL TRACE IS A LARGE FILE AND WILL TAKE A FEW SECONDS TO APPEAR.  

2. RETURN TO THE TOP OF THE CHL SCREEN AND SAVE CHANGES TO FILE. THE PROGRAM RETURNS TO THE MAIN CHL SCREEN 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 7. VIEW FINAL RESULTS 

1. REVIEW THE LOG RESULT. 

NOTE: FOR THE FINAL LOG WITH THE CHL HEADING IMAGES AND CHL TRACE IMAGE ADDED TO THE MAIN LOG SECTION TO COME UP, IT WILL TAKE ONE TO TWO MINUTES. 

2. IF THE LOG IS SATISFACTORY, DOWNLOAD THE FINAL LOG AS A PDF OR A PBM FILE INTO THE WELL’S FOLDER. 

3. RETURN TO THE MAIN CHL PROGRAM SCREEN. 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 8 SAVE DATA INPUTS 

1. PASTE THE DATA INPUT DATA TO A NOTEBOOK TEXT FILE AND SAVE IT IN THE WELL’S FOLDER. 

NOTE: ON THE NEXT CHL LOG UPDATE FOR THIS WELL, THE DATA CAN BE RESTORED TO THE PROGRAM FOR EDITING AND ADDITIONS WITHOUT HAVING TO RE-TYPE EACH SCREEN’S DATA INPUT. 

2.RETURN TO THE MAIN CHL SCREEN. 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

LOG OFF 

TO END CHL LOGGING SESSION 

RESTORING THE DATA INPUT VALUES FOR A LATER CHL UPDATE – 

1. OPEN AND LOG ON TO THE CHL PROGRAM 

2. IN THE LOG’S FOLDER OPEN THE TEXT FILE IN NOTEPAD. 

3. HIGH LIGHT AND COPY ALL THE DATA IN THE FILE FROM THE TOP DASHED LINE TO THE BOTTOM DASHED LINE 

4. CLOSE THE NOTEPAD AND RETURN TO THE MAIN CHL PROGRAM SCREEN 

AT THE MAIN CHL PROGRAM SCREEN, SELECT – 

NO. 9 RESTORE DATA INPUTS 

1. RIGHT CLICK AND PASTE THE WELL’S DATA INPUTS 

2. IMPORT DATA AND CLICK OK 

3. RETURN TO THE MAIN CHL PROGRAM SCREEN 

NOTE: ALL THE WELL’S DATA FROM THE PREVIOUS CHL PROGRAM SESSION ON EACH CHL PROGRAM SCREEN HAVE BEEN RESTORED. 

TO REVIEW THE FEATURES OF THE CHL PROGRAM AND THE SCREEN SEQUENCE OF THE CHL PROGRAM DISCUSSED ABOVE, CHECK THE REVIEW CHL PROGRAM BUTTON.

FOR A SINGLE WELL CHL TRACE AND CHL HEADING USAGE AGREEMENT, MAKE A PAYMENT OF $350.00 THRU PAYPAL AND CONTACT BILL WHEELIS TO HAVE A USER NAME AND PASSWORD SET UP FOR THE WELL. CONTACT BY PHONE 1 - 504 - 393 - 0299 OR E-MAIL AT wwheelis@cox.net  

FOR THE CONVENIENCE OF A LONG TERM MONTHLY CHL TRACE AND CHL HEADING USAGE AGREEMENT BASED ON EXPECTED LONG TERM PROGRAM USAGE, CONTACT BILL WHEELIS BY PHONE PHONE 1 - 504 - 393 - 0299 OR E-MAIL AT wwheelis@cox.net TO SET UP A MEETING.

BILL WHEELIS, WHEELIS ENGINEERING, LTD. 609 ADEE LANE GRETNA, LOUISIANA 70056   

PHONE - 1 - 504 - 393 - 0299 E-MAIL - wwheelis@cox.net