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A method and apparatus for creating a cemented lateral junction system

A technology of branch wells and connection points, which is applied in wellbore/well components, earth-moving drilling, construction, etc., and can solve the problems that cannot be provided by it

Inactive Publication Date: 2009-08-05
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

the system is versatile and very effective for the intended purpose, however it cannot be relied upon to provide a cemented joint requiring TAML4

Method used

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  • A method and apparatus for creating a cemented lateral junction system
  • A method and apparatus for creating a cemented lateral junction system
  • A method and apparatus for creating a cemented lateral junction system

Examples

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Embodiment Construction

[0013] Described here by way of example is a method and a device for moving a cemented part lowered in a well from the inserted position after the cement has set. This component can be of various types and includes tubes (eg, removable throughout the connection point), tubes with covered windows (discussed below), and the like. This requires overcoming the adhesiveness of the cement relative to the part that is intended to move. Use a release agent on the part for this so the cement cannot stick there. The release agent is a physical barrier between the cement and the part. The release agent can be of various types providing adhesion of the release agent to the component, dragging in conventional well operations by using conventional equipment is not sufficient to prevent this overcoming.

[0014] The methods and apparatus disclosed herein may include (see figure 1 ) a tubular part 10 with a pre-machined window 12 therein and a cover 14 for the opening. The shield has a p...

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PUM

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Abstract

A device for forming cemented lateral well junctions, comprising a casing (10) with pre-machined holes (12) and a cover (14) arranged on the casing, on which a release material is arranged (16). Further disclosed is a method of constructing a wellbore, the method comprising preparing a casing (10) having a pre-machined window (12), a cover (14) arranged to close the window, and a A release material is active on at least a portion of the cover exposed to the environment through the window. The method may also include installing the casing in the wellbore and applying a hardenable agent in an annulus of the wellbore around the casing.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of prior US Provisional Application Serial No. 60 / 425,355, filed November 11, 2002, the entire disclosure of which is hereby incorporated by reference. Background technique [0003] Especially in recent years, multilateral well technology has been frequently used in hydrocarbon exploration drilling and production schemes. By definition, this type of wellbore includes the intersection between the main wellbore and the lateral wellbore. These intersection points are called join points. The connection points are determined from grade 1 to grade 6 according to the characteristics of the connection points in the TAML qualitative system. Level 1 is the least complex and functional in the system, and Level 6 is the most complex and functional. There are many tools and / or systems that can be used to form a lateral well junction system, one of which is commercially offered by Baker Oil Tool...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B41/00E21B33/14E21B29/06
CPCE21B41/0042E21B29/06E21B33/14
Inventor D·J·默里A·C·米尔斯
Owner BAKER HUGHES INC