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Method and apparatus for treating a subterranean formation

A kind of equipment and formation technology, which is applied in the field of completing wellbore processing, and can solve problems such as damage

Inactive Publication Date: 2007-11-07
SCHLUMBERGER TECH LTD BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Damage can also occur where the PBR is exposed to the emery gravel pack fluid

Method used

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  • Method and apparatus for treating a subterranean formation
  • Method and apparatus for treating a subterranean formation
  • Method and apparatus for treating a subterranean formation

Examples

Experimental program
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Embodiment Construction

[0052] Referring now to the drawings, and first to Figures 1-A through 1-C, the casing is generally indicated at 10 and is perforated at a plurality of intervals, indicated at 12, to complete a well for producing petroleum products from a plurality of subterranean regions. While wellbores are shown as being substantially evenly spaced, it should be understood that casing boreholes are generally positioned in a non-uniformly spaced relationship, with spacing depending on the location or depth and width of the various subterranean zones of interest.

[0053] As shown, a service / completion liner, shown generally at 14, is positioned within perforated casing 10 and is adapted to latch into a reservoir packer 16 that forms a seal within the casing. The liner is designed for use with work tools that have a hydraulically actuated dump valve. Tank packers isolate the pressure conditions in the lowest perforated area from the multiple perforated areas of the casing. The service / comple...

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Abstract

A service / completion liner having a plurality of downhole selectable indicating tools and being used in sand control (gravel pack) placement systems in conjunction with a straddle packer service tools or with conventional crossover type service tools. Each indicating collar has a downhole selectable indicating collar providing a robust, landing profile for precisely locating and maintaining service tool position during well treatment operations. The landing collars accommodate hydraulic and / or thermal effects commonly referred to as tubing move effects which are the principle cause of tool position error and excessive seal wear. The landing collar is downhole convertible between a pass through (Go) and non pass through (No-go) condition by simple upward and downward cycling via the tool running and treatment fluid tubing and a shifting tool, which may also be referred to as a set down collet. The shifting / set down collet is also used to open and close a downhole sliding sleeve valve and may be an integral part of an injection tool or a tool for gravel or fracture packing. A sliding sleeve valve design and a straddle packer configuration that protects the primary PBRs in the gravel pack system and also protects the sliding sleeve while sand is placed in the screen casing annulus.

Description

[0001] Cross References to Related Applications [0002] Applicants hereby claim priority to US Provisional Patent Application No. 60 / 439,640, filed January 13, 2003, entitled "Method and Apparatus for Treating Subterranean Formations," which is incorporated herein by reference. [0003] Applicants also claim Patent Application Nos. 10 / 078,963, filed February 19, 2002, entitled "Pipeline Transported Fracturing Tools and Methods," and filed March 12, 2001, entitled "For The contents of U.S. Provisional Application No. 60 / 275,270 are incorporated herein by reference. The tools disclosed here are hereinafter referred to as "Mojave TM tool". technical field [0004] The present invention generally relates to tools and methods for accomplishing wellbore treatments (eg, formation fracturing, proppant mud injection, gravel packing, etc.). More particularly, the present invention relates to a method and apparatus for treating multiple formations in one operation using coiled or joi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/25E21B43/26E21B43/16
Inventor H·比索内特L·迈克尔·马克E·托法宁
Owner SCHLUMBERGER TECH LTD BV
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