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1. 发明公开

EP0839989A3 Releasable connection 失效
标题翻译：可拆卸的连接
公开(公告)号：EP0839989A3
公开(公告)日：1999-03-31
申请号：EP97402627.0
申请日：1997-11-04
申请人： SOFITECH N.V. , COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER S.A.
发明人： Leising, Larry J. , McGill, Howard L.
IPC分类号： E21B17/06
CPC分类号： E21B23/006 , E21B17/06
摘要： A releasable connection between the lower end of a running string and a well tool that is subject to being stuck in a well includes inner and outer members movable telescopically between contracted and extended positions, a tension sleeve connecting the members in the contracted position and being disrupted by a predetermined pull to allow telescoping movement, a stop nut to limit such movement in the extended position of the members, and a mechanism responsive to a certain number of cycles of telescoping movement for disabling the stop nut to allow complete release and separation of the members.

2. 发明公开

EP0780543A2 Pressure compensated weight on bit shock sub for a wellbore drilling tool 失效
标题翻译： DruckkompensierterBohrdruckdämpferfürein Bohrwerkzeug
公开(公告)号：EP0780543A2
公开(公告)日：1997-06-25
申请号：EP96402786.6
申请日：1996-12-18
申请人： SOFITECH N.V. , COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER S.A.
发明人： Leising, Lawrence J. , McGill, Howard L.
IPC分类号： E21B17/07
CPC分类号： E21B17/07
摘要： A drilling tool, adapted to drill a wellbore in an earth formation, comprises a weight on bit equaliser shock sub. The weight on bit equaliser shock sub includes a precharged nitrogen chamber and additional chambers, the nitrogen in the nitrogen chamber adapted to telescopically open the equaliser shock sub during the drilling of the wellbore thereby maintaining a constant weight or force on the drill bit during the drilling operation. A force resultant from the pressurised nitrogen exists in the nitrogen chamber and additional forces resultant from a pressurised wellbore fluid exist in the additional chambers. The shock sub is specially designed in a particular manner to cause the sum of the force of the nitrogen in the nitrogen chamber and the additional forces of the wellbore fluid in the additional chambers to be equal solely to the force of the nitrogen in the nitrogen chamber. As a result, the weight or force on the drill bit is constant when the sum of the force in the nitrogen chamber and the additional forces in the additional chambers is equal solely to the force of the nitrogen in the nitrogen chamber. In a preferred, second embodiment, when the additional chambers include an atmospheric chamber, the weight or force on the drill bit is constant when the cross sectional area of the atmospheric chamber is equal to the cross sectional area of the nitrogen chamber. As a result, the only force on the drill bit during drilling is the force of the precharged nitrogen in the nitrogen chamber and consequently a constant weight or force on the drill bit is maintained during the drilling operation.
摘要翻译：适于在地层中钻井的钻孔工具包括钻头均衡器冲击副的重物。位均衡器冲击副的重量包括预充氮室和附加室，氮室中的氮适于在钻井期间可伸缩地打开均衡器冲击次级，从而在钻孔期间在钻头上保持恒定的重量或力操作。在氮气室中存在由加压氮产生的力，并且在附加室中存在由加压井筒流体产生的附加力。冲击副特别设计为使氮气室中的氮气的总和和附加室中的井筒流体的附加力的总和仅等于氮气室中的氮气的力。结果，当氮气室中的力和附加室中的附加力的总和等于氮室中的氮的力时，钻头上的重量或力是恒定的。在优选的第二实施例中，当附加室包括大气室时，当大气室的横截面积等于氮室的横截面面积时，钻头上的重量或力是恒定的。因此，在钻孔期间钻头上的唯一力是氮气室中预充氮的力，因此在钻井操作期间保持钻头上恒定的重量或力。

3. 发明授权

EP0839989B1 Releasable connection 失效
标题翻译：可拆卸的连接
公开(公告)号：EP0839989B1
公开(公告)日：2002-07-17
申请号：EP97402627.0
申请日：1997-11-04
申请人： SOFITECH N.V. , COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER S.A.
发明人： Leising, Larry J. , McGill, Howard L.
IPC分类号： E21B17/06
CPC分类号： E21B23/006 , E21B17/06

4. 发明公开

EP0839989A2 Releasable connection 失效
标题翻译： LösbareVerbindung
公开(公告)号：EP0839989A2
公开(公告)日：1998-05-06
申请号：EP97402627.0
申请日：1997-11-04
申请人： SOFITECH N.V. , COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER S.A.
发明人： Leising, Larry J. , McGill, Howard L.
IPC分类号： E21B17/06
CPC分类号： E21B23/006 , E21B17/06
摘要： A releasable connection between the lower end of a running string and a well tool that is subject to being stuck in a well includes inner and outer members movable telescopically between contracted and extended positions, a tension sleeve connecting the members in the contracted position and being disrupted by a predetermined pull to allow telescoping movement, a stop nut to limit such movement in the extended position of the members, and a mechanism responsive to a certain number of cycles of telescoping movement for disabling the stop nut to allow complete release and separation of the members.
摘要翻译：运行钢丝绳的下端与被牢固固定在井中的钻井工具之间的可释放连接包括可收缩和延伸位置之间可伸缩运动的内部和外部构件，将构件连接在收缩位置并被破坏的张力套筒通过预定的拉力以允许伸缩运动，用于限制在构件的延伸位置中的这种运动的止动螺母，以及响应于一定数量的伸缩运动循环的机构，用于禁止止动螺母以允许完全释放和分离成员。

5. 发明授权

EP0431689B1 Packer and service tool assembly 失效
标题翻译：帕克设置工具。
公开(公告)号：EP0431689B1
公开(公告)日：1995-03-01
申请号：EP90203167.3
申请日：1986-09-02
申请人： SOFITECH N.V. , COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER
发明人： McGill, Howard L. , Scranton, Joseph D.
IPC分类号： E21B33/129 , E21B23/06 , E21B43/04
CPC分类号： E21B23/06 , E21B33/1295 , E21B43/04

6. 发明公开

EP0431689A1 Packer and service tool assembly 失效
标题翻译： Packer mit Setzwerkzeug。
公开(公告)号：EP0431689A1
公开(公告)日：1991-06-12
申请号：EP90203167.3
申请日：1986-09-02
申请人： SOFITECH N.V. , COMPAGNIE DES SERVICES DOWELL SCHLUMBERGER
发明人： McGill, Howard L. , Scranton, Joseph D.
IPC分类号： E21B33/129 , E21B23/06 , E21B43/04
CPC分类号： E21B23/06 , E21B33/1295 , E21B43/04
摘要： A releaseable ratchet mechanism is provided in a packer and service tool assembly for oil or gas well preparation for trapping the setting loads when the packer is set in the casing. The ratchet mechanism is releasable by pulling up a housing portion which cammingly engages collapsible ratchet fingers thereby disengaging the ratchet finger trapping teeth from a stationary ratchet ring.
摘要翻译：一个可释放的棘轮机构设置在用于油或气井的打包机和维修工具组件中，用于在封隔器置于壳体中时捕获设定负载。棘轮机构可以通过拉起凸轮接合可折叠的棘轮棘爪的壳体部分而释放，从而将棘轮棘爪捕获齿与固定的棘轮环分离。

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