Downhole treatment monitoring systems and methods using ion selective fiber sensors

Patent metadata

Field	Value
Publication number	US-9239406-B2
Application number	US-201213717979-A
Country	US
Kind code	B2
Filing date	Dec 18, 2012
Priority date	Dec 18, 2012
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A disclosed system includes a plurality of ion selective fiber sensors configured to measure treatment concentration variance, and a computer in communication with the plurality of ion selective fiber sensors. The computer determines treatment coverage for different downhole zones using information received from the plurality of ion selective fiber sensors. A disclosed method includes collecting data from a plurality of ion selective fiber sensors configured to measure treatment concentration variance. The method also includes determining treatment coverage for different downhole zones using information received from the plurality of ion selective fiber sensors. A disclosed downhole treatment management system includes a data analysis unit that collects data from a plurality of downhole ion selective fiber sensors configured to measure treatment concentration variance, and that determines treatment coverage for different downhole zones using the collected data. The downhole treatment management system also includes a treatment control interface in communication with the data analysis unit. The treatment control interface updates treatment operations using treatment coverage information determined by the data analysis unit.

First claim

What is claimed is:

1. A system, comprising:
an optical fiber comprising a plurality of ion selective fiber sensors;
a surface interface configured to input interrogation signals to the optical fiber and to collect treatment concentration measurements from the ion selective fiber sensors in response to each interrogation signal; and
a computer that receives at least some of the treatment concentration measurements collected by the surface interface, wherein the computer determines treatment coverage for different downhole zones based on the received treatment concentration measurements.

2. The system of claim 1 , wherein at least some of the plurality of ion selective fiber sensors are configured to measure a concentration variance of a stimulation treatment chemical species.

3. The system of claim 1 , wherein at least some of the plurality of ion selective fiber sensors are configured to measure a concentration variance of a stimulation treatment reaction result.

4. The system of claim 1 , wherein at least some of the plurality of ion selective fiber sensors are configured to measure a concentration variance of a diversion treatment chemical species.

5. The system of claim 1 , wherein at least some of the plurality of ion selective fiber sensors are configured to measure a concentration variance of a diversion treatment reaction result.

6. The system of claim 1 , further comprising a stimulation treatment control interface in communication with the computer, wherein the stimulation treatment control interface is configured to update an ongoing stimulation treatment plan using the treatment coverage determined by the computer.

7. The system of claim 1 , further comprising a stimulation treatment control interface in communication with the computer, wherein the stimulation treatment control interface is configured to update a stimulation treatment model for future stimulation treatments using the treatment coverage determined by the computer.

8. The system of claim 1 , further comprising a diversion treatment control interface in communication with the computer, wherein the diversion treatment control interface is configured to update an ongoing diversion treatment plan using the treatment coverage determined by the computer.

9. The system of claim 1 , further comprising a diversion treatment control interface in communication with the computer, wherein the diversion treatment control interface is configured to update a diversion treatment model for future diversion treatments using the treatment coverage determined by the computer.

10. The system of claim 1 , wherein at least some of the plurality of ion selective fiber sensors are arranged in series along a reflective single-end optical fiber architecture.

11. The system of claim 1 , wherein at least some of the plurality of ion selective fiber sensors are arranged in series along a transmissive loop optical fiber architecture.

12. The system of claim 1 , wherein at least some of the plurality of ion selective fiber sensors are distributed among reflective branches of a reflective optical fiber architecture.

13. The system of claim 1 , wherein at least some of the plurality of ion selective fiber sensors are distributed among transmissive branches of a transmissive loop optical fiber architecture.

14. The system of claim 1 , wherein the optical fiber is deployed along an exterior of a casing string that extends through the different downhole zones.

15. The system of claim 1 , wherein the optical fiber is deployed along an exterior of a production tubing string that extends through the different downhole zones.

16. The system of claim 1 , wherein each ion selective fiber sensor comprises a reagent region integrated with the optical fiber.

17. The system of claim 1 , wherein each reagent region comprises an exposed cladding layer portion of the optical fiber.

18. A method performed by a computer, the method comprising:
collecting treatment concentration measurements from an optical fiber comprising a plurality of downhole ion selective fiber sensors; and
determining treatment coverage for different downhole zones based on the collected treatment concentration measurements.

19. The method of claim 18 , further comprising updating a stimulation treatment plan based on the treatment coverage determined by the computer.

20. The method of claim 18 , further comprising updating a diversion treatment plan based on the treatment coverage determined by the computer.

21. The method of claim 18 , further comprising generating a time chart displaying stimulation treatment coverage over time based on said collecting and said determining.

22. The method of claim 18 , further comprising generating a time chart displaying diversion treatment coverage over time based on said collecting and said determining.

23. A downhole treatment management system, comprising:
a data analysis unit that receives treatment concentration measurements collected from an optical fiber comprising a plurality of downhole ion selective fiber sensors, and that determines treatment coverage for different downhole zones using the received treatment concentration measurements; and
a treatment control interface in communication with the data analysis unit, wherein the treatment control interface updates treatment operations based on the treatment coverage determined by the data analysis unit.

24. A downhole treatment management system of claim 23 , wherein the treatment control interface is configured to update diversion treatment operations or stimulation treatment operations based on the treatment coverage determined by the data analysis unit.

Assignees

• Halliburton Energy Serv Inc
• Halliburton Energy Services Inc

Inventors

• Kalia Nitika
• Samson Etienne M
• Maida John L

Classifications

• G01V9/00 Primary

  Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00 · CPC title

• G06F15/00

  Digital computers in general (details G06F1/00 – G06F13/00); Data processing equipment in general · CPC title

• E21B47/102

  Fixed Constructions · mapped topic

• E21B47/10

  Locating fluid leaks, intrusions or movements · CPC title

• E21B47/123

  Fixed Constructions · mapped topic