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公开(公告)号：EP1412607A1
公开(公告)日：2004-04-28
申请号：EP02749084.6
申请日：2002-07-30
IPC分类号： E21B4/02
摘要： The present invention relates to downhole apparatus for limiting rotation of a rotor (4) relative to a stator (8) associated with said rotor (4). Apparatus according to the invention is provided with a locking member (12) movable from a first axial position to a second axial position by the application of a static fluid pressure to a differential area of said locking member (12). The apparatus is characterised by means for selectively applying static fluid pressure to said differential area of said locking member (12).
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公开(公告)号：EP1434925A1
公开(公告)日：2004-07-07
申请号：EP02767676.6
申请日：2002-10-01
摘要： The present invention relates to methods and equipment for recovering use of a wellbore in circumstances where the well bore has become blocked by downhole equipment. The invention provides a method comprising the steps of separating, at a release joint, a portion of equipment from a jammed portion (6) of equipment; running the separated portion of equipment uphole out of the wellbore (100); running a deflector assembly (60) downhole into the wellbore (100); and deflecting a milling tool (64) from the wellbore into surrounding formation. The method is characterised by restricting relative movement between the deflector assembly (60) and the wellbore (100) by engaging, prior to deflecting the milling tool (64), the deflector assembly (60) with said jammed portion (6) of equipment.
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公开(公告)号：EP1412608B1
公开(公告)日：2007-05-09
申请号：EP02747600.1
申请日：2002-07-30
IPC分类号： E21B17/06
摘要： The present invention relates to downhole apparatus permitting separation of one part of downhole equipment from another part thereof. The invention provides downhole apparatus (2) comprising a first part (4) connected to a second part (6) by connecting means which limits axial and rotational movement between said parts. The connecting means comprises a connecting member (22) having first and second ends connected respectively to the first and second parts (4, 6). The connection of the first and second ends of the connecting member (22) is such as to limit axial and rotational movement relative to the respective first and second parts (4, 6). The connecting member (22) is provided between said first and second ends with a region of weakness in the connecting member provided by weakening means (28), and with means for minimising stress generated in the connecting means at said region of weakness when torque is transmitted in use between the first and second parts (4, 6) via the connecting member (22).
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公开(公告)号：EP1567746B1
公开(公告)日：2007-09-26
申请号：EP03767952.9
申请日：2003-12-02
IPC分类号： E21B41/00
CPC分类号： E21B41/0042 , E21B41/0035
摘要： The present invention relates to a downhole tool (102) for selectively opening and closing a lateral borehole extending from a primary borehole. The tool (102) comprises a body (104) incorporating a wall provided with an opening (116) extending therethrough; a deflector member (106) slidably mounted in the body (104) and having a deflecting surface (126) for deflecting, in use, downhole equipment laterally within the body (104). The deflector member (106) is slidable between an open position, in which the deflecting surface is located adjacent and facing towards said opening so that, in use, downhole equipment laterally deflected by the deflecting surface is directed through said opening, and a closed position, in which the deflecting surface is oriented relative to said opening so as to prevent downhole equipment from being laterally deflected through said opening during use. In either position, equipment may pass into the primary borehole downhole of the primary/lateral junction. The tool (102) also comprises constraining means (138, 140) for restricting movement of the whipstock relative to the body.
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公开(公告)号：EP1434925B1
公开(公告)日：2006-07-26
申请号：EP02767676.6
申请日：2002-10-01
摘要： The present invention relates to methods and equipment for recovering use of a wellbore in circumstances where the well bore has become blocked by downhole equipment. The invention provides a method comprising the steps of separating, at a release joint, a portion of equipment from a jammed portion (6) of equipment; running the separated portion of equipment uphole out of the wellbore (100); running a deflector assembly (60) downhole into the wellbore (100); and deflecting a milling tool (64) from the wellbore into surrounding formation. The method is characterised by restricting relative movement between the deflector assembly (60) and the wellbore (100) by engaging, prior to deflecting the milling tool (64), the deflector assembly (60) with said jammed portion (6) of equipment.
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公开(公告)号：EP1412607B1
公开(公告)日：2005-12-28
申请号：EP02749084.6
申请日：2002-07-30
IPC分类号： E21B4/02
摘要： The present invention relates to downhole apparatus for limiting rotation of a rotor (4) relative to a stator (8) associated with said rotor (4). Apparatus according to the invention is provided with a locking member (12) movable from a first axial position to a second axial position by the application of a static fluid pressure to a differential area of said locking member (12). The apparatus is characterised by means for selectively applying static fluid pressure to said differential area of said locking member (12).
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公开(公告)号：EP1567746A1
公开(公告)日：2005-08-31
申请号：EP03767952.9
申请日：2003-12-02
IPC分类号： E21B41/00
CPC分类号： E21B41/0042 , E21B41/0035
摘要： The present invention relates to a downhole tool (102) for selectively opening and closing a lateral borehole extending from a primary borehole. The tool (102) comprises a body (104) incorporating a wall provided with an opening (116) extending therethrough; a deflector member (106) slidably mounted in the body (104) and having a deflecting surface (126) for deflecting, in use, downhole equipment laterally within the body (104). The deflector member (106) is slidable between an open position, in which the deflecting surface is located adjacent and facing towards said opening so that, in use, downhole equipment laterally deflected by the deflecting surface is directed through said opening, and a closed position, in which the deflecting surface is oriented relative to said opening so as to prevent downhole equipment from being laterally deflected through said opening during use. In either position, equipment may pass into the primary borehole downhole of the primary/lateral junction. The tool (102) also comprises constraining means (138, 140) for restricting movement of the whipstock relative to the body.
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公开(公告)号：EP1412608A1
公开(公告)日：2004-04-28
申请号：EP02747600.1
申请日：2002-07-30
IPC分类号： E21B17/06
摘要： The present invention relates to downhole apparatus permitting separation of one part of downhole equipment from another part thereof. The invention provides downhole apparatus (2) comprising a first part (4) connected to a second part (6) by connecting means which limits axial and rotational movement between said parts. The connecting means comprises a connecting member (22) having first and second ends connected respectively to the first and second parts (4, 6). The connection of the first and second ends of the connecting member (22) is such as to limit axial and rotational movement relative to the respective first and second parts (4, 6). The connecting member (22) is provided between said first and second ends with a region of weakness in the connecting member provided by weakening means (28), and with means for minimising stress generated in the connecting means at said region of weakness when torque is transmitted in use between the first and second parts (4, 6) via the connecting member (22).
摘要翻译： 本发明涉及允许井下装置的一部分与其另一部分分离的井下装置。 本发明提供了包括通过连接装置连接到第二部分（6）的第一部分（4）的井下装置（2），所述连接装置限制所述部分之间的轴向和旋转运动。 连接装置包括具有分别连接到第一和第二部分（4,6）的第一和第二端的连接构件（22）。 连接构件（22）的第一端和第二端的连接是为了限制相对于相应的第一和第二部分（4,6）的轴向和旋转运动。 连接构件（22）在所述第一端和第二端之间设置有在由弱化装置（28）提供的连接构件中的弱化区域，并且具有用于在力矩为零时使所述连接装置在所述弱化区域处产生的应力最小化的装置 在使用中经由连接构件（22）在第一和第二部分（4,6）之间传递。
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