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公开(公告)号：EP2815066A1
公开(公告)日：2014-12-24
申请号：EP13749619.6
申请日：2013-01-16
CPC分类号： E21B33/12 , E21B23/04 , E21B34/06 , E21B34/063 , E21B43/28 , E21B43/285 , E21B2034/002
摘要： A selectively corrodible downhole article includes a movable cylindrical member comprising a first section and an axially separated second section, the first section comprising a first material having a first galvanic activity, the second section comprising a second material having a second galvanic activity, the first galvanic activity being greater than the second, the first section being electrically isolated from the second section; and a fixed member disposed on the cylindrical member and configured for electrical contact with the first or second section, the fixed member comprising an intermediate material having an intermediate galvanic activity, the intermediate galvanic activity being intermediate the first and second galvanic activity., the movable cylindrical member configured for movement from a first position where the first section is disposed and in electrical contact with the fixed member and a second position where the second section is disposed and in electrical contact with the fixed member.
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公开(公告)号：EP2812528A1
公开(公告)日：2014-12-17
申请号：EP12868078.2
申请日：2012-02-10
CPC分类号： E21B34/14 , E21B34/06 , E21B2034/002 , F16K5/0605 , F16K5/201 , F16K27/067
摘要： A wellbore ball valve includes a ball-type valve closure having an interior, central bore. A lower ball carrying assembly defines a first annular, sealing seat surface in contact with and adapted to seal with the exterior of the valve closure. The first seat surface defines a first through hole. An upper assembly defines a second annular seat surface in contact with the exterior of the valve closure. The second seat surface defines a second through hole. The second through hole is shaped differently from the first through hole in that it at least partially overlaps with the central bore while the first through hole is sealed from the central bore.
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公开(公告)号：EP2785966A1
公开(公告)日：2014-10-08
申请号：EP12865829.1
申请日：2012-01-20
发明人： ZHAO, Liang , LOPEZ, Jean-Marc
CPC分类号： E21B34/06 , E21B43/12 , E21B2034/007
摘要： A method of variably restricting flow in a subterranean well can include resisting the flow through a sidewall of a tubular string, and then selectively opening a device in response to a predetermined pressure signal being transmitted. The opening of the device can substantially reduce a resistance to the flow through the tubular string sidewall. A flow restrictor system for use with a subterranean well can include a flow restrictor which resists flow through system, a pressure sensor, and an initially closed device which opens and thereby permits the flow to bypass the flow restrictor, in response to a predetermined pressure signal being detected by the sensor.
摘要翻译： 一种可变地限制地下井中的流动的方法可以包括阻止流过管柱的侧壁的流动，然后响应于正在传输的预定压力信号选择性地打开装置。 该装置的开口可以显着减小对通过管柱侧壁的流动的阻力。 与地下井一起使用的限流器系统可以包括防止流经系统的流量限制器，压力传感器和初始关闭的装置，所述装置响应于预定的压力信号打开并由此允许流动绕过限流器 被传感器检测到。
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64.发明公开WELLBORE FLOW CONTROL DEVICES COMPRISING COUPLED FLOW REGULATING ASSEMBLIES AND METHODS FOR USE THEREOF 审中-公开井流的控制设备耦合流动控制安排及其使用方法
公开(公告)号：EP2761125A1
公开(公告)日：2014-08-06
申请号：EP11873234.6
申请日：2011-09-27
摘要： Wellbore flow control devices can be used in various subterranean operations to regulate access of formation fluids to the interior of a wellbore pipe and/or to limit the access of unwanted fluids thereto. Coupling of flow regulating assemblies to one another in the wellbore flow control devices can result in improved operational performance in regulating formation fluid flow to the interior of the wellbore pipe compared to using the flow regulating assemblies in an uncoupled state. Wellbore flow control devices can comprise a gate valve assembly that is in fluid flow communication with a flow restricting assembly, where each assembly is located on the exterior of a wellbore pipe and the flow restricting assembly is in fluid flow communication with the interior of the wellbore pipe.
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公开(公告)号：EP2751383A1
公开(公告)日：2014-07-09
申请号：EP12751524.5
申请日：2012-08-30
申请人： Welltec A/S
IPC分类号： E21B33/127 , E21B23/06 , E21B34/06
CPC分类号： E21B33/1285 , E21B23/06 , E21B33/127 , E21B33/1277 , E21B34/06
摘要： The present invention relates to an annular barrier to be expanded in an annulus between a well tubular structure and an inside wall of a borehole downhole for providing zone isolation between a first zone and a second zone of the borehole, comprising a tubular part for mounting as part of the well tubular structure, the tubular part having a longitudinal axis, an expandable sleeve surrounding the tubular part and defining a space being in fluid communication with an inside of the tubular part, each end of the expandable sleeve being connected with the tubular part, and an aperture for letting fluid into the space to expand the expandable sleeve, wherein the barrier further comprises a compensation device arranged in the space between the expandable sleeve and the tubular part, the compensation device having a chamber in which a piston is arranged dividing the chamber in a first and a second chamber part, the first chamber part being in fluid communication with the space and the second chamber part comprising gas.
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66.发明公开An active external casing packer (ECP) for frac operations in oil and gas wells 有权有源外部壳体封隔器（ECP），用于石油和天然气井压裂作业
公开(公告)号：EP2728107A1
公开(公告)日：2014-05-07
申请号：EP13194091.8
申请日：2010-05-27
发明人： Wood, Peter , Louden, Fraser , Berry, Stuart , Gorrara, Andrew , Trinder, Duncan
IPC分类号： E21B33/124 , E21B43/26 , E21B33/12
CPC分类号： E21B43/267 , E21B17/042 , E21B33/1212 , E21B33/1246 , E21B33/126 , E21B34/06 , E21B43/11 , E21B43/14 , E21B43/26 , E21B2034/007
摘要： A zonal isolation device (10; 20; 30; 300; 400; 500; 600) in the form of an active external casing packer is provided which includes a tubular section such as a casing or liner (1; 21; 31; 171; 203) arranged to be run into and secured within a larger diameter generally cylindrical structure such as an open borehole (163; 213). At least one sleeve member (3; 23; 33; 43; 173) is positioned on the exterior of the casing or liner and is sealed thereto and at least two deformable band members (201; 401, 403; 501) are provided around and are bonded to the outer circumference of the sleeve member. The sleeve member and the at least two deformable band members is/are expanded into place against the inner circumference of the open borehole by increasing the pressure within the sleeve member. The method detailed herein also provides zonal isolation by use of a pair of spaced apart sleeve members during a frac operation where frac fluid is supplied to a zone (in between the pair of sleeve members) requiring to be frac'd, where the frac pressure acts not only on the outside of the zonal isolation device but also on the interior of the sleeve member to enhance the seal provided thereby.
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67.发明公开An active external casing packer (ECP) for frac operations in oil and gas wells 审中-公开AktiverAußengehäusepacker（ECP）fürFrac-Operationen在Öl-undGasbohrlöchern
公开(公告)号：EP2728106A1
公开(公告)日：2014-05-07
申请号：EP13194080.1
申请日：2010-05-27
发明人： Wood, Peter , Louden, Fraser , Berry, Stuart , Gorrara, Andrew , Trinder, Duncan
IPC分类号： E21B33/124 , E21B43/26 , E21B33/12
CPC分类号： E21B43/267 , E21B17/042 , E21B33/1212 , E21B33/1246 , E21B33/126 , E21B34/06 , E21B43/11 , E21B43/14 , E21B43/26 , E21B2034/007
摘要： A zonal isolation device (10; 20; 30; 300; 400; 500; 600) in the form of an active external casing packer is provided which includes a tubular section such as a casing or liner (1; 21; 31; 171; 203) arranged to be run into and secured within a larger diameter generally cylindrical structure such as an open borehole (163; 213). At least one sleeve member (3; 23; 33; 43; 173) is positioned on the exterior of the casing or liner and is sealed thereto and at least two deformable band members (201; 401, 403; 501) are provided around and are bonded to the outer circumference of the sleeve member. The sleeve member and the at least two deformable band members is/are expanded into place against the inner circumference of the open borehole by increasing the pressure within the sleeve member. The method detailed herein also provides zonal isolation by use of a pair of spaced apart sleeve members during a frac operation where frac fluid is supplied to a zone (in between the pair of sleeve members) requiring to be frac'd, where the frac pressure acts not only on the outside of the zonal isolation device but also on the interior of the sleeve member to enhance the seal provided thereby.
摘要翻译： 提供形式为活性外壳封隔器的区带隔离装置（10; 20; 30; 300; 400; 500; 600），其包括管状部分，例如壳体或衬套（1; 21; 31; 171; 203），其布置成进入并固定在诸如开放井眼（163; 213）的较大直径的大致圆柱形结构内。 至少一个套筒构件（3; 23; 33; 43; 173）定位在壳体或衬套的外部上并被密封在其上，并且在其周围设置有至少两个可变形带构件（201; 401,403; 501） 被结合到套筒构件的外周。 套筒构件和至少两个可变形带构件通过增加套筒构件内的压力而膨胀到相对于开放钻孔的内周的位置。 本文详述的方法还通过在压裂操作期间使用一对间隔开的套筒构件来提供区域隔离，其中压裂流体被供应到需要压裂的区域（在一对套筒构件之间），其中压裂压力 不仅在区带隔离装置的外部，而且在套筒构件的内部上起作用，以增强由此提供的密封。
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公开(公告)号：EP2702235A2
公开(公告)日：2014-03-05
申请号：EP12720347.9
申请日：2012-04-27
发明人： MORRISON, Jeffery
CPC分类号： E21B34/06 , E21B34/102 , E21B2034/005
摘要： A pressure relief valve assembly may be coupled to one or more casings and/or tubular members to control fluid communication therebetween. The valve assembly is a one-way valve assembly that relieves pressure within an annulus formed between adjacent casings and/or tubular members to prevent burst or collapse of the casings and/or tubular members. The valve assembly includes a tubular body having a port for fluid communication and a valve ring disposed within the tubular body, the valve ring having a flap for closing the port, wherein the flap is configured to flex from a closed position to an open position in response to a pressure differential. In another embodiment, the valve assembly also includes a retainer sleeve movable from an engaged position for maintaining the flap in a closed position to a disengaged position to allow the flap to open.
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公开(公告)号：EP2671006A2
公开(公告)日：2013-12-11
申请号：EP12746616.7
申请日：2012-02-13
CPC分类号： E21B34/06 , E21B2034/005 , F16K15/033 , Y10T137/7898
摘要： A flapper valve includes a valve body, a valve cover pivotally coupled to the valve body at a hinge between an open and closed position, and a biasing element biasing the valve cover to the closed position. The valve cover includes an interior face comprising a sealing surface and a boss including a face surrounded by a beveled edge joining the boss with the sealing surface.
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70.发明公开LOW EQUIVALENT CIRCULATION DENSITY SETTING TOOL 审中-公开EINSTELLWERKZEUG MIT NIEDRIGERÄQUIVALENTERZIRKULATION
公开(公告)号：EP2661536A2
公开(公告)日：2013-11-13
申请号：EP11855215.7
申请日：2011-12-27
发明人： WATSON, Brock , MOELLER, Daniel , MILLER, Kevin J.
CPC分类号： E21B34/06 , E21B33/04 , E21B43/105 , E21B43/108
摘要： A downhole oilfield tool assembly is provided. The tool assembly comprises a mandrel, a valve oriented to block downwards flow through the mandrel in a closed position, a first piston located above the valve and at least partly around an outside of the mandrel. The first piston is configured to develop motive force from a pressure differential between an interior of the mandrel and an exterior of the downhole oilfield tool assembly.
摘要翻译： 提供井下油田工具组件。 工具组件包括心轴，阀被定向成在闭合位置阻挡向下流过心轴的阀，位于阀上方且至少部分围绕心轴外部的第一活塞。 第一活塞构造成从心轴的内部和井下油田工具组件的外部之间的压差产生动力。
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