Methods and cables for use in fracturing zones in a well

Patent metadata

Field	Value
Publication number	US-10738577-B2
Application number	US-201514709879-A
Country	US
Kind code	B2
Filing date	May 12, 2015
Priority date	Jul 22, 2014
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

Method and system for multi-stage well treatment wherein an isolating device is tethered with a distributed measurement cable during the treatment of one or more stages. The cable having a cable core including an optical fiber conductor.

First claim

What is claimed is:

1. A method for multi-stage well treatment, comprising:
(a) perforating a first interval in the well above a first target depth;
(b) deploying to the first target depth an isolation object tethered to a distributed measurement cable from the surface, the distributed measurement cable having a polymeric outer jacket disposed about at least one inner polymeric jacket, wherein the measurement cable has a core disposed within the at least one inner polymeric jacket, the core being at least one optical fiber conductor;
(c) isolating the well at the first target depth with the isolation object by directly seating the isolation object against an inner diameter restriction of a retention sub installed at the first target depth;
(d) treating the first perforated interval in a plurality of stages; and
(e) concurrently with (d), receiving measurements from the distributed measurement cable for monitoring each stage of the treatment;
wherein the perforation (a), the deployment (b), the isolation (c), and the treatment (d) concurrently with the monitoring (e) are performed in the recited order.

2. The method of claim 1 , further comprising detaching the distributed measurement cable from the isolation object, and removing the distributed measurement cable from the well.

3. The method of claim 1 , further comprising leaving the distributed measurement cable in the well, initiating production from the first treated interval and concurrently obtaining measurements from the distributed measurement cable to monitor the production.

4. The method of claim 1 , further comprising repeating the perforation (a), deployment (b), isolation (c), treatment (d), and monitoring (e), one or more times with respect to successive intervals above successively higher target depths.

5. The method of claim 1 , further comprising treating a stage below the first target depth prior to treatment of the first interval.

6. The method of claim 5 , wherein the stage below the first target depth is treated prior to perforating the first interval.

7. The method of claim 5 , wherein treating the stage below the first target depth comprises actuating a rupture disk valve.

8. The method of claim 5 , wherein treating the stage below the first target depth comprises deploying one or more perforating guns below the first target depth to initiate fluid entry into the stage below the first target depth.

9. The method of claim 1 , further comprising installing the retention sub with a casing string at the first target depth.

10. The method of claim 1 , wherein the isolation object comprises a degradable ball.

11. The method of claim 1 , wherein the measurements received are selected from fluid flow rate, distributed temperature, distributed vibration, distributed pressure, and combinations thereof.

12. The method of claim 1 , wherein the treatment (d) comprises fracturing.

13. The method of claim 12 , wherein the fracturing comprises pumping a treatment fluid comprising proppant laden stages separated by one or more diverter pills.

14. The method of claim 13 , further comprising adjusting in (d) one or more of respective sizes of the proppant laden stages, number of the diverter pills, and volumes of the diverter pills, in response to the measurements received in (e).

15. A method for multi-stage well treatment, comprising:
(a) installing in a casing string an initiation sub adjacent a toe of the well, wherein the initiation sub comprises a rupture disk valve;
(b) installing in the casing string a plurality of retention subs at a first target depth and one or more successively higher target depths above the initiation sub;
(c) actuating the initiation sub to treat a stage adjacent the initiation sub, wherein actuating the initiation sub comprises bursting the rupture disk valve;
(d) perforating a first interval in the well above the first target depth;
(e) deploying to the first target depth an isolation object tethered to a distributed measurement cable from the surface, the distributed measurement cable having a polymeric outer jacket disposed about at least one inner polymeric jacket, wherein the measurement cable has a core disposed within the at least one inner polymeric jacket, the core being at least one optical fiber conductor;
(f) directly seating the isolation object deployed in (e) against an inner diameter restriction of the retention sub installed at the first target depth to isolate the well at the first target depth;
(g) treating the first perforated interval in a plurality of stages;
(h) concurrently receiving measurements from the distributed measurement cable for monitoring each stage of the treatment in (g);
(i) detaching the distributed measurement cable from the isolation object seated in (f); and
(j) repeating at least the perforation in (d), the deployment in (e), the seating in (f), the treatment in (g), and the monitoring in (h), one or more times with respect to successively higher intervals above the respective one or more successively higher target depths.

16. The method of claim 15 , further comprising:
(k) concurrently conveying landing seat installation tools to the respective retention subs, and perforating tools to the respective intervals, with a wireline; and
(l) installing landing seats with the respective landing seat installation tools in the respective retention sub to receive the respective isolation objects.

17. The method of claim 15 , further comprising removing the isolation object.

18. The method of claim 15 , wherein the measurements received are selected from fluid flow rate, distributed temperature, distributed vibration, distributed pressure, and combinations thereof.

19. The method of claim 15 , wherein the treatments in (c) and (g) comprise fracturing treatments.

20. The method of claim 19 , wherein the fracturing treatments in (g) comprise pumping a treatment fluid comprising proppant laden stages separated by one or more diverter pills.

21. The method of claim 20 , further comprising adjustment during the fracturing treatments in (g) one or more of respective sizes of the proppant laden stages, number of the diverter pills, and volumes of the diverter pills, in response to the measurements received in (h).

22. The method of claim 19 , wherein the fracturing treatments in (g) comprise sealing at least one open zone of the respective interval with at least one removable sealing agent, selectively removing the removable sealing agent from at least one target zone, and fracturing the at least one target zone.

23. The method of claim 22 , wherein the fracturing treatments in (g) occur while at least one open zone of the well is sealed with at least one removable sealing agent.

24. The method of claim 22 , wherein the removable sealing agent comprises manufactured shapes selected from at least one of particulates, fibers, flakes, rods, pellets and combinations thereof.

25. The method of claim 19 , wherein the fracturing treatments in the respective intervals in (g) comprise:
sealing, with a removable sealing agent, all but one of a plurality of open zones in the respective interval;
fracturing the open zone while the other zones in the respective interval are isolated or sealed or a combination thereof;
sealing the fractured zone or isolating the section of the respective interval comprising the fractured zone;
selectively removing the removable sealing agent from an untreated sealed

Assignees

• Schlumberger Technology Corp

Inventors

• Varkey Joseph
• Wanjau Paul
• Kim David Geehyun
• Grisanti Maria Auxiliadora
• Chang Sheng
• Richter Peter John
• Pena Gonzalez Alejandro Andres
• Lecerf Bruno
• Usoltsev Dmitriy

Classifications

• E21B47/06

  Measuring temperature or pressure · CPC title

• E21B47/135

  using light waves, e.g. infrared or ultraviolet waves · CPC title

• E21B33/12

  Packers; Plugs (used for cementing E21B33/134, E21B33/16) · CPC title

• E21B34/063

  Valve or closure with destructible element, e.g. frangible disc (E21B34/103 takes precedence) · CPC title

• E21B43/116

  Gun or shaped-charge perforators · CPC title