Workflow and visualization for localization of concentric pipe collars

Patent metadata

Field	Value
Publication number	US-11525349-B2
Application number	US-201816334671-A
Country	US
Kind code	B2
Filing date	Jul 19, 2018
Priority date	Aug 8, 2017
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A method and system for visualizing data to detect a collar. A method may comprise disposing an electromagnetic logging tool downhole; emitting an electromagnetic field from the transmitter; energizing a casing with the electromagnetic field to produce an eddy current; recording the eddy current from the casing with the receiver; creating a variable-density-log from the recorded eddy current; selecting a wrapping period for the variable-density-log; creating a wrapped-variable-density-log from the variable-density-log using the wrapping period; and determining at least one collar location and a pipe index with the wrapped-variable-density-log. A system for to detect a collar may comprise an electromagnetic logging tool. The electromagnetic logging tool may comprise a transmitter and a receiver, wherein the transmitter and the receiver may be a coil. The system may further comprise an information handling system.

First claim

What is claimed is:

1. A method for visualizing data to detect a collar comprising:
disposing an electromagnetic logging tool downhole, wherein the electromagnetic logging tool comprises:
a transmitter; and
a receiver;

emitting an electromagnetic field from the transmitter;
energizing a casing with the electromagnetic field to produce an eddy current;
recording the eddy current from the casing with the receiver;
creating a variable-density-log from the recorded eddy current;
selecting a wrapping period for the variable-density-log;
creating a wrapped-variable-density-log from the variable-density-log using the wrapping period; and
determining at least one collar location and a pipe index with the wrapped-variable-density-log.

2. The method of claim 1 , further comprising adjusting the wrapping period until a substantially horizontal pattern is obtained.

3. The method of claim 2 , wherein the determining the at least one collar location and the pipe index using a smoothness constraint on a line that connects adjacent identification of a plurality of collars.

4. The method of claim 2 , further comprising adjusting the wrapping period to a second substantially different period value to obtain a second horizontal pattern corresponding to a second pipe and determining the at least one collar location on the second pipe using the second horizontal pattern.

5. The method of claim 2 , further comprising providing visual feedback to a user during the adjusting of the wrapping period with a high repetition rate and identifying a horizontal pattern for a plurality of the wrapping periods.

6. The method of claim 2 , wherein adjusting the wrapping period is done automatically using an algorithm that searches for an optimum horizontal repetitions.

7. The method of claim 1 , further comprising showing the at least one collar location on the variable-density-log using a marker.

8. A system for to detect a collar comprising:
an electromagnetic logging tool comprising:
a transmitter, wherein the transmitter is a coil; and
a receiver, wherein the receiver is a coil;
an information handling system, wherein the information handling system:
creates a variable-density-log;
selects a wrapping period;
creates a wrapped-variable-density-log from the variable-density-log using the wrapping period; and
determines at least one collar location and a pipe index with the wrapped-variable-density-log.

9. The system of claim 8 , wherein the information handling system adjusts the wrapping period until a substantially horizontal pattern is obtained and determine the at least one collar location and the pipe index using a smoothness constraint on a line that connects adjacent identification of collars.

10. The system of claim 9 , wherein the information handling system adjusts the wrapping period to a second substantially different period value to obtain a second horizontal pattern corresponding to a second pipe and determining the at least one collar location on the second pipe using the second horizontal pattern.

11. The system of claim 10 , wherein the information handling system provides visual feedback to a user during the adjusts the wrapping period with a high repetition rate and identifying a horizontal pattern for a plurality of the wrapping periods.

12. The system of claim 9 , wherein the adjusts the wrapping period is done automatically using an algorithm that searches for an optimum horizontal repetitions.

13. The system of claim 8 , wherein the information handling system shows the at least one collar location on the variable-density-log using a marker.

14. A non-transitory computer readable medium having data stored therein representing a software executable by a computer, the software executable comprising instructions comprising:
instructions to create a variable-density-log from a recorded eddy current;
instructions to select a wrapping period for the variable-density-log;
instructions to create a wrapped-variable-density-log from the variable-density-log using the wrapping period; and
instructions to determine at least one collar location and a pipe index with the wrapped-variable-density-log.

15. The non-transitory compute readable medium of claim 14 , wherein the instructions further comprise:
instructions to adjust the wrapping period until a substantially horizontal pattern is obtained.

16. The non-transitory compute readable medium of claim 15 , wherein the instructions to determine at least one collar location and a pipe index further comprises using a smoothness constraint on a line that connects adjacent identification of a plurality of collars.

17. The non-transitory compute readable medium of claim 15 , wherein the instructions further comprise:
instructions to adjust the wrapping period to a second substantially different period value to obtain a second horizontal pattern corresponding to a second pipe and determining the at least one collar location on the second pipe using the second horizontal pattern.

18. The non-transitory compute readable medium of claim 15 , wherein the instructions further comprise:
instructions to provide visual feedback to a user during the adjusting the wrapping period with a high repetition rate and identifying a horizontal pattern for a plurality of the wrapping periods.

19. The non-transitory compute readable medium of claim 15 , wherein the instructions to adjust the wrapping period until a substantially horizontal pattern is obtained is done automatically using an algorithm that searches for an optimum horizontal repetitions.

20. The non-transitory compute readable medium of claim 19 , wherein the instructions further comprise:
instructions to show the at least one collar location on the variable-density-log using a marker.

Assignees

• Halliburton Energy Services Inc

Inventors

• Donderici Burkay
• Capoglu Ilker R

Classifications

• E21B47/092 Primary

  by detecting magnetic anomalies · CPC title

• G01N27/9073 Primary

  Recording measured data · CPC title

• E21B47/13

  by electromagnetic energy, e.g. radio frequency · CPC title

• G01V3/28

  using induction coils · CPC title

• G01V3/30

  operating with electromagnetic waves · CPC title