Well completion system with well control valve

    公开(公告)号:US5823265A

    公开(公告)日:1998-10-20

    申请号:US683947

    申请日:1996-07-19

    摘要: A system for selective production from, and stimulation of, subterranean production zones while improving productivity and enhancing control of the well. Portions of a production tubing string and an internal stimulation/shifter string are assembled and run together as completion segments. Consecutive completion segments, with each segment including packers that surround sleeves and terminate at the upper end in a well control valve, are run into the cased wellbore so that the acid flow ports operated by sleeve valve assemblies are placed proximate the perforations of prospective production zones. The production zones are then stimulated as the stimulation/shifter string is moved progressively outward placing acid at each consecutive zone. The stimulation/shifter string is then removed from the production tubing string, mechanically closing the well control valve assembly by tubing manipulation. A well control valve assembly prevents flow from or to completion segments further downhole from the well control valve assembly once the stimulation/shifter string has been removed from the production tubing string. The well control valve assembly features a shaped flapper plate which, when opened, conforms closely to the shape and size of the production tubing string's interior diameter. The flapper plate is biased toward a closed position by a compression spring arrangement that includes an arm which levers the plate upward toward a seating surface. The valve assembly's closure is mechanically induced and is not responsive to a sensed well condition. Reopening of the valve assembly is accomplished by insertion into the assembly of a tubular member, or "stinger", which is incorporated into a running arrangement. The stinger is described in relation to a seal assembly which is capable of reopening the well control valve and securing it in the open position. The seal assembly is incorporated into a running arrangement and inserted into the valve assembly to open the valve assembly and seal the connection between the seal assembly and the well control valve assembly.

    Methods and associated apparatus for drilling and completing a wellbore junction
    16.
    发明授权
    Methods and associated apparatus for drilling and completing a wellbore junction 有权
    用于钻井和完井井结的方法和相关设备

    公开(公告)号:US06786283B2

    公开(公告)日:2004-09-07

    申请号:US10246908

    申请日:2002-09-19

    IPC分类号: E21B708

    摘要: Apparatus and methods are provided which enhance drilling and completion of wellbore intersections. In a described embodiment, a cutting tool diverter is used to drill a branch wellbore extending outwardly from a main wellbore. The diverter is provided with an outer easily millable portion which reduces the amount of time needed to retrieve the diverter. In another embodiment, a substance is injected into a formation surrounding the intersection of the main and branch wellbores, to thereby facilitate sealing of the intersection.

    摘要翻译: 提供了增强井眼交叉点钻井和完井的装置和方法。 在所描述的实施例中,使用切割工具转向器来钻出从主井筒向外延伸的分支井筒。 分流器设置有外部容易铣削的部分,其减少了取回分流器所需的时间量。 在另一个实施例中,物质被注入到围绕主和分支井眼的交叉点的地层中,从而便于交叉口的密封。

    Field development methods
    17.
    发明授权
    Field development methods 有权
    现场开发方法

    公开(公告)号:US06488087B2

    公开(公告)日:2002-12-03

    申请号:US09805611

    申请日:2001-03-13

    IPC分类号: E21B4317

    摘要: A field development system and associated methods provide a main wellbore intersecting a formation and having fractures extending outwardly from the main wellbore into the formation. Multiple additional wellbores, spaced apart from the main wellbore and without associated additional production facilities, intersect the fractures and provide auxiliary drainage of the formation into the main wellbore via the fractures extending outwardly therefrom.

    摘要翻译: 现场开发系统和相关方法提供与地层相交并具有从主井眼向外延伸到地层中的裂缝的主井筒。 与主井筒间隔开并且没有相关联的另外的生产设施的多个另外的井筒与裂缝相交并且通过从其向外延伸的裂缝提供地层到主井筒中的辅助排水。

    Methods of completing a subterranean well and associated apparatus
    18.
    发明授权
    Methods of completing a subterranean well and associated apparatus 失效
    完成地下井及相关装置的方法

    公开(公告)号:US6125937A

    公开(公告)日:2000-10-03

    申请号:US915201

    申请日:1997-08-20

    摘要: A method of completing a subterranean well and associated apparatus therefor provide efficient operation and convenience in completions where production of fluids from a lateral wellbore and a parent wellbore is desired. In one disclosed embodiment, the invention provides a method of completing a subterranean well wherein a tubular member having an aperture formed through a sidewall portion thereof is inserted through a junction of multiple wellbore portions. The aperture is positioned so that it faces one of the wellbore portions. Apparatus provided by the present invention include various forms of flow diverters which may be utilized in the method.

    摘要翻译: 一种完成地下井及其相关设备的方法提供了在需要来自侧井眼和母井孔的流体生产的完井中的有效操作和便利。 在一个公开的实施例中,本发明提供一种完成地下井的方法,其中具有通过其侧壁部分形成的孔的管状构件穿过多个井筒部分的连接处。 孔被定位成使其面对井筒部分之一。 本发明提供的装置包括可用于该方法的各种形式的分流器。

    Methods of completing a subterranean well and associated apparatus
    19.
    发明授权
    Methods of completing a subterranean well and associated apparatus 失效
    完成地下井及相关装置的方法

    公开(公告)号:US6079493A

    公开(公告)日:2000-06-27

    申请号:US800248

    申请日:1997-02-13

    IPC分类号: E21B23/12 E21B41/00 E21B43/14

    摘要: A method of completing a subterranean well and associated apparatus therefor provide efficient operation and convenience in completions where production of fluids from a lateral wellbore and a parent wellbore is desired. In one disclosed embodiment, the invention provides a method of completing a subterranean well wherein a device having multiple portals is positioned at a junction of multiple wellbore portions and engaged with other structures positioned in the well. Several alternate constructions of a device for use with the method are provided as well.

    摘要翻译: 一种完成地下井及其相关设备的方法提供了在需要来自侧井眼和母井孔的流体生产的完井中的有效操作和便利。 在一个公开的实施例中,本发明提供了一种完成地下井的方法,其中具有多个入口的装置位于多个井眼部分的连接处并且与位于井中的其它结构接合。 还提供了与该方法一起使用的设备的几个替代结构。