Methods and cables for use in fracturing zones in a well

Patent metadata

Field	Value
Publication number	US-2016024902-A1
Application number	US-201514709879-A
Country	US
Kind code	A1
Filing date	May 12, 2015
Priority date	Jul 22, 2014
Publication date	Jan 28, 2016
Grant date	—

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; (c) isolating the well at the first target depth with the isolation object; (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.

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 a 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; (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; (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; (f) seating the isolation object deployed in (e) in 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); (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 , wherein the initiation sub comprises a rupture disk valve and the actuation in (c) comprises bursting the rupture disk valve.

17 . 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.

18 . The method of claim 15 , further comprising removing the isolation objects.

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

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

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

22 . The method of claim 21 , 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).

23 . The method of claim 20 , 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.

24 . The method of claim 23 , 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.

25 . The method of claim 23 , wherein the removable sealing agent comprises manufactured shapes selected from at least one of particulates, sized particulates, fibers, flakes, rods, pellets and combinations thereof.

26 . The method of claim 20 , wherein the fracturing treatments in the respective intervals in (g) comprise:
isolating, or sealing with a removable sealing agent, or a combination thereof, 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 zone; and repeating the sequence of fracturing the open zone while the other zones are isolated or sealed, isolating or sealing the fractured zone, and selectively removing the removable sealing agent from a sealed un-fractured zone until the desired number of zones are re-fractured.

27 . A system for multi-stage well treatment, comprising:
(a) a perforating system to convey a perforating device to perforate an interval in the well above a target depth; (b) a deployment system to deploy an isolation object tethered to a distributed measurement cable from the surface to the target depth and isolate the well at the first target depth with the isolation object; (c) a treatment s

Assignees

• Schlumberger Technology Corp

Inventors

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

Classifications

• E21B47/135

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

• E21B23/01

  for anchoring the tools or the like (E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18) · CPC title

• E21B34/063

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

• E21B47/06

  Measuring temperature or pressure · CPC title

• E21B33/12

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