Apparatus and Method for Unsticking a Downhole Tool
    31.
    发明申请
    Apparatus and Method for Unsticking a Downhole Tool 有权
    用于拆卸井下工具的装置和方法

    公开(公告)号:US20080308279A1

    公开(公告)日:2008-12-18

    申请号:US11763018

    申请日:2007-06-14

    IPC分类号: E21B23/00

    CPC分类号: E21B31/03 E21B49/10

    摘要: A downhole tool is provided including apparatus for unsticking the tool from the wall or a borehole. The tool may include a housing defining a longitudinal axis and a sleeve coupled to the housing and mounted for rotation relative to the housing, the sleeve having an exterior surface including at least one projection extending radially outwardly with respect to the longitudinal axis. A transmission mechanism may be coupled to and adapted to rotate the sleeve, and a motor may be coupled to the transmission mechanism. A method for unsticking the downhole tool by rotating a sleeve is also disclosed.

    摘要翻译: 提供了一种井下工具,其包括用于从墙壁或井眼解脱工具的装置。 工具可以包括限定纵向轴线的壳体和联接到壳体并被安装用于相对于壳体旋转的套筒,套筒具有包括相对于纵向轴线径向向外延伸的至少一个突出部的外表面。 传动机构可以联接到并适于旋转套筒,并且马达可以联接到传动机构。 还公开了一种通过旋转套筒来解开井下工具的方法。

    Propellant fracturing of wells
    32.
    发明授权
    Propellant fracturing of wells 有权
    推进剂压裂井

    公开(公告)号:US07431075B2

    公开(公告)日:2008-10-07

    申请号:US11162576

    申请日:2005-09-15

    IPC分类号: E21B43/263

    CPC分类号: E21B43/263 F42D1/04

    摘要: A propellant assembly for fracturing a formation around a well includes a propellant and a detonating cord wrapped around the propellant, the detonating cord to ignite the propellant upon detonation of the detonating cord. Alternatively, the propellant can include a substantially central axial bore, with the propellant having a plurality of axial slots extending radially outwardly from the axial bore toward the outer surface of the propellant. A detonating cord is arranged within the axial bore of the propellant.

    摘要翻译: 用于在井周围压裂地层的推进剂组件包括推进剂和缠绕在推进剂周围的引爆绳,引爆绳在爆震引爆时点燃推进剂。 或者,推进剂可以包括基本上中心的轴向孔,其中推进剂具有从轴向孔朝向推进剂的外表面径向向外延伸的多个轴向槽。 引爆线布置在推进剂的轴向孔内。

    Apparatus and method for formation evaluation
    36.
    发明授权
    Apparatus and method for formation evaluation 有权
    地层评价装置及方法

    公开(公告)号:US08215389B2

    公开(公告)日:2012-07-10

    申请号:US12779730

    申请日:2010-05-13

    IPC分类号: E21B49/10

    CPC分类号: E21B49/10

    摘要: A method for acquiring a sample of a virgin fluid from a subsurface formation penetrated by a wellbore surrounded by a layer of contaminated fluid is disclosed. The method includes abutting a first packer against a wall of the wellbore, and extending at least a portion of a second packer beyond the first packer, wherein the second packer is at least partially disposed in the first packer. An inlet to a first flowline is at least partially defined by the first packer, and an inlet to a second flowline is defined by the second packer. The method further includes drawing one of virgin fluid, contaminated fluid and combinations thereof into the first flowline; and drawing virgin fluid into the second flowline.

    摘要翻译: 公开了一种从受污染流体层围绕的井眼渗透的地下地层获取原始流体样品的方法。 该方法包括将第一封隔器抵靠井壁的壁,并将第二封隔器的至少一部分延伸超过第一封隔器,其中第二封隔器至少部分地布置在第一封隔器中。 第一流线的入口至少部分地由第一封隔器限定,并且第二流线的入口由第二封隔器限定。 该方法还包括将初始流体,污染流体及其组合中的一种引入第一流线中; 并将原始流体绘制到第二流线中。

    Downhole tool having an extendable component with a pivoting element
    39.
    发明授权
    Downhole tool having an extendable component with a pivoting element 有权
    井下工具具有具有枢转元件的可延伸部件

    公开(公告)号:US07690423B2

    公开(公告)日:2010-04-06

    申请号:US11766364

    申请日:2007-06-21

    IPC分类号: E21B49/10

    CPC分类号: E21B49/10 E21B31/00

    摘要: An extendable component for use in a downhole tool for traversing subsurface formations includes a drive element that defines an axis and has a distal end, and an abutment that is spaced radially from a distal end of the drive element. A driven element defines a driven element axis, is flexibly coupled to the drive element, and includes a proximal end disposed adjacent to the drive element and a distal end. A tilt arm is coupled to the driven element, is disposed at an angle with respect to the driven element axis, and is configured to engage the abutment. The driven element is moveable between a normal position and a tilted position. A contact head is coupled to the driven element distal end and is adapted to engage the wellbore wall.

    摘要翻译: 用于在井下工具中用于横穿地下构造的可延伸部件包括限定轴线并具有远端的驱动元件以及与驱动元件的远端径向间隔开的邻接部。 被驱动元件限定从动元件轴线,柔性地联接到驱动元件,并且包括邻近驱动元件设置的近端和远端。 倾斜臂联接到从动元件,相对于被驱动元件轴线成一定角度设置,并且被构造成与基台接合。 从动元件可在正常位置和倾斜位置之间移动。 接触头联接到从动元件远端并且适于接合井筒壁。