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System and method for positioning a bottom hole assembly in a horizontal well

一种底部钻具组合、水平井的技术，应用在井眼/井部件、井眼/井的阀装置、钻管等方向，能够解决耗时成本高、多层区刺激所需的时间增加、花费等问题

Active Publication Date: 2013-10-30
BAKER HUGHES HLDG LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the force of the spring-loaded stop increases, so does the thrust required to run into the hole (RIH)
Currently, pushing a BHA with a casing collar positioner to the bottom of a horizontal well using coiled tubing is difficult due to the limited push capability of the coiled tubing
Larger diameter flexible tubing can be used to increase the push capacity, but the use of larger diameter flexible tubing also brings greater cost
[0017] Stimulation and / or treatment of multi-layered zones within a well is a time consuming and costly operation
The time required to stimulate a particular multi-level field may increase if the operator repeatedly needs to spend additional time to determine the actual location of the BHA rather than being able to move directly to each level area and perform stimulation measures and / or treatments

Method used

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  • System and method for positioning a bottom hole assembly in a horizontal well
  • System and method for positioning a bottom hole assembly in a horizontal well
  • System and method for positioning a bottom hole assembly in a horizontal well

Examples

Experimental program
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Embodiment Construction

[0039] Figure 7 shows the addition of the BHA102 ( Figure 8 An embodiment of the structure of the connector or joint 10 , 20 , 30 and 40 (hereinafter referred to as joint) for positioning efficiency within the perforated housing 110 , 210 or 310 is shown in . Figure 1-6 Examples of various embodiments of the perforated casing or perforated collar 110, 210 or 310 as discussed below are shown in FIG. The configuration of the perforated housing is for illustration purposes, as the systems and methods associated with the subs 10, 20, 30 and 40 can be used to position a downhole tool, such as a BHA, in various housings and perforated sections within, as would be appreciated by one of ordinary skill in the art with the advantages of the present invention.

[0040] The joints 10, 20, 30 and 40 are used to join together a casing section having a specified length A and a perforated casing also having a specified length B. These joints are adapted to precisely indicate the locatio...

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PUM

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Abstract

A system of couplings and method of use of the couplings to locate a downhole tool connected to coiled tubing, such as a bottom hole assembly, within a selected segment of a casing string. The selected segment of casing may be a ported collar or ported housing that permits the treatment and / or stimulation of the adjacent well formation. The system of couplings may be two, three, or four couplings that are spaced apart at predetermined lengths. The predetermined lengths may be shorter than typical lengths of casing segments. The distance between the first and second coupling may be substantially identical to the distance between the third and fourth coupling. The use of distances between the couplings that are shorter than the length of conventional casing segments may provide surface indicators as to the location of the bottom hole assembly with a higher confidence than relying on a traditional tally sheet.

Description

[0001] related application [0002] This application claims U.S. Provisional Patent Application No. 61, filed December 27, 2010, entitled "System and Method for Positioning a Bottom Hole Assembly in a Horizontal Well" by John Edward Ravensbergen, Lyle Erwin Laun, and John G. Misselbrook 427,442, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates generally to sub or connector systems for use in oil and natural gas wells and methods of using subs with downhole tools, and more particularly to sub systems and bottom holes that can be used to fracture in multilayer wells Combination combined perforated completions. Background technique [0004] Completions of oil and gas wells are generally performed after the drilling of hydrocarbon production wellbores. Part of the well completion process includes lowering the well casing assembly into the well. The casing assembly may include multiple sections of tubular casing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/16E21B23/00
CPCE21B47/0905E21B34/103E21B43/14E21B23/02E21B47/0915E21B47/092E21B47/098
Inventor J·E·拉文斯伯根L·劳恩J·米塞尔布罗克
Owner BAKER HUGHES HLDG LLC