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1. 发明申请

WO2009133375A2 DOWNHOLE TOOL 审中-公开
标题翻译：卧式工具
公开(公告)号：WO2009133375A2
公开(公告)日：2009-11-05
申请号：PCT/GB2009/001108
申请日：2009-05-01
申请人： ADVANCED PERFORATING TECHNOLOGIES LIMITED , ATHERTON, Eric , JONES, Tim
发明人： ATHERTON, Eric , JONES, Tim
IPC分类号： E21B47/00
CPC分类号： E21B43/11 , E21B43/119 , E21B47/08 , E21B47/09 , E21B49/00 , G01B5/18
摘要： A means of investigating the quality and/or nature of perforations in a downhole environment is disclosed. A "pecking' finger and depth measuring probe that can be axially and radially displaced enables the perforation to be located and its depth determined, through sequentially pecking around the wall lining in patterns such as radial, axial, and spiral sequences. By swinging a pecking finger that supports a depth measuring probe or cable with a bullet or conically shaped tip and measuring the displacement of the finger, the edge and centre of the hole can be determined with the largest displacement being when the tip is fully in the hole. When this position has been determined, the depth measuring cable is deployed and the depth of the perforation can be established by both an increase in the force required to push the cable and by the displacement of the pecking finger as it is pushed back by the reaction forces on the cable. Thus, a downhole tool comprises a elongate housing for insertion into a downhole environment, from which a probe extends radially by a variable amount, means for driving the probe in a radial direction, and means for sensing resistance to outward radial movement of the probe. One or more radially extendable clamps can be provided for fixing the tool within a surrounding bore. These can be at the upper and/or lower ends of the tool. Ideally, they are moveable between an extended and a retracted position by interengagement with a member moveable relative to a remainder of the tool in a direction that is longitudinal relative to the tool. The member can be, for example, a sleeve extending longitudinally around the tool, the sleeve being moveable longitudinally along the tool. These clamps could be used to fix other types of tool in place in a downhole environment, or one similar to a downhole environment.
摘要翻译：公开了一种调查井下环境中穿孔质量和/或性质的方法。可以轴向和径向移位的“啄食”手指和深度测量探头能够穿孔，并通过依次在径向，轴向和螺旋序列的图案中围绕壁衬啄，确定其深度，通过摆动啄食手指支撑深度测量探针或电缆，带有子弹或锥形尖端，并测量手指的位移，孔的边缘和中心可以用最大的位移来确定，当尖端完全在孔中时，当这个位置已经确定，深度测量电缆被部署，穿孔的深度可以通过推动电缆所需的力的增加和由于反作用力被推回的啄食指的位移而被建立因此，井下工具包括用于插入井下环境的细长壳体，探针从该井下径向径向延伸可变量，用于dr 使探头沿径向方向，以及用于感测抵抗探针的向外径向移动的装置。可以提供一个或多个可径向延伸的夹具用于将工具固定在周围的孔内。这些可以在工具的上端和/或下端。理想地，它们可以通过与相对于工具的纵向方向相对于工具的其余部分可移动的构件相互接合而在伸展位置和缩回位置之间移动。构件可以是例如围绕工具纵向延伸的套筒，套筒可以沿着工具纵向移动。这些夹具可用于将其他类型的工具固定在井下环境中，或者类似于井下环境中。

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