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    • 25. 发明申请
    • TIEBACK CEMENTING PLUG SYSTEM
    • TIEBACK CEMENTING PLUG系统
    • WO2015134830A1
    • 2015-09-11
    • PCT/US2015/019092
    • 2015-03-06
    • WEATHERFORD/LAMB, INC.
    • GASPARD, Gregory GerardFARLEY, Douglas Brian
    • E21B33/16
    • E21B33/143E21B17/00E21B33/12E21B33/16E21B34/06
    • A method for casing a subsea wellbore includes running a tieback casing string into the subsea wellbore using a workstring including first, second, and third wiper plugs. The method further includes: launching a first release plug or tag into the workstring; pumping cement slurry into the workstring, thereby driving the first release plug or tag along the workstring; after pumping the cement slurry, launching a second release plug or tag into the workstring; and pumping chaser fluid into the workstring, thereby driving the release plugs or tags and cement slurry through the workstring. The release plugs or tags engage and release the respective wiper plugs from the workstring. The first wiper plug or release plug ruptures, thereby allowing the cement slurry to flow therethrough. The method further includes: stabbing the tieback casing string into a liner string; and retrieving the workstring, the workstring still including the third wiper plug.
    • 用于套管海底井筒的方法包括使用包括第一,第二和第三刮水器塞的工作系统来运行连接套管柱进入海底井筒。 该方法还包括:将第一释放塞或标签发射到工作绳中; 将水泥浆泵送到工作绳中,从而沿着工作绳驱动第一释放塞或标签; 在泵送水泥浆后,将第二个释放塞或标签推入工作绳; 并将追击流体泵送到工作绳中,从而通过工作绳驱动释放塞或标签和水泥浆。 释放塞子或标签使相应的雨刷塞从工作绳上接合和释放。 第一个雨刷塞或释放塞破裂,从而使水泥泥浆流过。 该方法还包括:将连接套管柱刺入衬管柱中; 并检索工作串,工作台仍然包括第三个雨刷。
    • 26. 发明申请
    • AUTONOMOUS SELECTIVE SHIFTING TOOL
    • 自动选择性移位工具
    • WO2015095571A1
    • 2015-06-25
    • PCT/US2014/071237
    • 2014-12-18
    • WEATHERFORD/LAMB, INC.
    • NGUYEN, Minh-TuanINGRAM, Gary Duron
    • E21B23/02E21B34/14E21B43/14E21B43/26
    • E21B34/066E21B23/02E21B34/14E21B43/14E21B43/26E21B47/09E21B2034/007
    • A system for fracturing a hydrocarbon bearing formation includes a valve including a tubular housing having a bore therethrough and one or more flow ports formed through a wall thereof. One or more locator tags are embedded in the housing, and a sleeve is disposed in the housing and movable relative thereto between an open and a closed position. The system also includes a shifting tool comprising a shifter movable between an extended position and a retracted position and operable to engage the valve sleeve. The shifting tool includes a lock that keeps the shifter extended in the locked position and allows the shifter to retract in the unlocked position. The shifting tool also includes an antenna for detecting the locator tags, and an electronics package in communication with the antenna and the actuator for operating the actuator in response to detection of the locator tags.
    • 用于压裂含烃地层的系统包括阀,其包括具有穿过其中的孔的管状壳体和通过其壁形成的一个或多个流动端口。 一个或多个定位器标签嵌入壳体中,并且套筒设置在壳体中并且可以在打开位置和闭合位置之间相对于其移动。 该系统还包括换档工具,其包括可在延伸位置和缩回位置之间移动并可操作以接合阀套的换档器。 换档工具包括锁定件,其将变速器延伸到锁定位置并允许变速器在解锁位置缩回。 换档工具还包括用于检测定位器标签的天线以及与天线和致动器通信的电子组件,用于响应于定位器标签的检测而操作致动器。