USE OF DISTRIBUTED TEMPERATURE SENSORS DURING WELLBORE TREATMENTS

• US 20040129418A1
• Filed: 07/28/2003
• Published: 07/08/2004
• Est. Priority Date: 08/15/2002
• Status: Active Grant

• Current Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Original Assignee: Schlumberger Technology Corporation (Schlumberger NV)
• Inventors: Flamant, Nicolas, Gay, Michael, Adnan, Sarmad, Thomeer, Hubertus, Jee, Virginia
• Granted Patent: US 7,055,604 B2
• Time in Patent Office: Days
• US Class Current: 166/250.01
• CPC Class Codes: C12N 13/00 Treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic waves
• CPC Class Codes: C12N 15/02 Preparation of hybrid cells by fusion of two or more cells, e.g. protoplast fusion monoclonal antibodies C07K16/00; apparatus for cell fusion C12M
• CPC Class Codes: E21B 43/27 by use of eroding chemicals, e.g. acids
• CPC Class Codes: E21B 47/07 Temperature
• CPC Class Codes: E21B 47/13 by electromagnetic energy, e.g. radio frequency
• CPC Class Codes: G01D 5/35383 using multiple sensor devices using multiplexing techniques
• CPC Class Codes: G01K 11/32 using changes in transmittance, scattering or luminescence in optical fibres
• CPC Class Codes: G16B 25/00 ICT specially adapted for hybridisation; ICT specially adapted for gene or protein expression
• CPC Class Codes: G16B 40/00 ICT specially adapted for biostatistics; ICT specially adapted for bioinformatics-related machine learning or data mining, e.g. knowledge discovery or pattern finding
• CPC Class Codes: H04L 65/1101 Session protocols

Abstract

The invention relates to a method for treating subterranean formation comprising providing distributed temperature sensors, injecting a treatment fluid and monitoring the temperature across the treatment interval during the injection process.

Claims

1. A method for treating subterranean formation comprising providing distributed temperature sensors, injecting a treatment fluid and monitoring the temperature across the treatment interval during the injection process.

2. The method according to claim 1, wherein the step of providing distributed temperature sensors is performed through a coiled tubing unit.

3. The method according to claim 1, further comprising monitoring the temperature after the injection process.

4. The method according to claim 1, further comprising determining a baseline temperature profile before starting the injection of the treatment fluid.

5. The method according to claim 2, further comprising determining a baseline temperature profile before starting the injection of the treatment fluid.

6. The method according to claim 3, further comprising the step of injecting a non-reacting fluid before the step of injecting the treatment fluid to calculate a differential temperature profile.

7. The method according to claim 1 further comprising monitoring the pressure across the treatment interval during the injection process.

8. The method according to claim 1 wherein the distributed temperature sensors are an optical fiber through which laser generated light pulses are sent at timed intervals.

9. The method according to claim 1, wherein the distributed temperature sensors are based on and array of Fiber Bragg Grating temperature sensors.

10. The method according to claim 1, further including determining the actual location of the treated zones.

11. The method according to claim 1, comprising adjusting the treatment in real time.

12. The method according to claim 9, wherein the step of adjusting the treatment includes adding a diverter or adjusting the amount of added diverter.

13. The method according to claim 9, wherein the step of adjusting the treatment includes changing the position of the coiled tubing injection point.

14. The method according to claim 1, where the treatment is a matrix treatment.

15. The method according to claim 1, where the matrix treatment is matrix acidizing.

16. The method according to claim 1 where the treatment is gravel packing.

17. The method according to claim 1, where the treatment is acid fracturing.

18. The method according to claim 1, where the injection treatment consists in a plurality of stages of injection of alternating treatment fluids and wherein at least some stages of the treatment consist in injecting a foam.

19. The method according to claim 1, further comprising the step of measuring the bottomhole pressure during the treatment.

20. The method according to claim 19, wherein the bottomhole pressure is measured through distributed sensors.