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1. 发明公开

EP2705207A2 LINER CEMENTATION PROCESS AND SYSTEM 有权转让
标题翻译：注浆系统衬里
公开(公告)号：EP2705207A2
公开(公告)日：2014-03-12
申请号：EP12722976.3
申请日：2012-05-02
申请人： Tesco Corporation
发明人： MOFFITT, Michael Eric
IPC分类号： E21B7/20 , E21B33/14 , E21B43/10
CPC分类号： E21B33/14 , E21B7/20 , E21B43/10
摘要： Present embodiments are directed to coupling a cementation assembly with a hung or set liner string in a well and moving the liner string during a cementation operation. Specifically, for example, a process in accordance with present techniques includes running a cementation assembly into a well on drill pipe and engaging, with a distal end of the cementation assembly, a liner top assembly of a liner string that is positioned downhole in the well, wherein the liner string was previously positioned downhole in the well without being cemented into the well. Further, the process includes latching the cementation assembly with the liner string such that movement of the cementation assembly is translated to the liner string, and flowing cement through the drill pipe and into the liner string while moving the cementation assembly and the liner string.

2. 发明公开

EP2670936A2 METHOD FOR STRENGTHENING A WELLBORE 失效转让
标题翻译：方法加固钻孔
公开(公告)号：EP2670936A2
公开(公告)日：2013-12-11
申请号：EP12706756.9
申请日：2012-02-17
申请人： Tesco Corporation (US)
发明人： NEIDHARDT, Dietmar J.
IPC分类号： E21B7/00 , E21B47/00
CPC分类号： E21B21/003 , E21B7/20 , E21B33/138
摘要： Embodiments include drilling through a formation (15,16) using a drill bit (20) conveyed by a tubular string (1) having an outer diameter at least 70 percent of the wellbore being drilled. The formation is drilled at a first rate of penetration (ROP) while pumping drilling fluid at a first flow rate. After drilling through the formation, the ROP is reduced to a second ROP, the flow rate is reduced to a second flow rate, and pressure is increased in the wellbore until drilling fluid begins to leak into the formation. While maintaining the increased pressure in the wellbore, the volume of drilling fluid lost to the formation is monitored until the rate at which the drilling fluid loss occurs is reduced. Components of this procedure are repeated until a selected wellbore strength is achieved.

3. 发明公开

EP2663795A1 FLOW CONTROL DIVERTER VALVE 审中-公开
标题翻译：流量控制转向器
公开(公告)号：EP2663795A1
公开(公告)日：2013-11-20
申请号：EP12734739.1
申请日：2012-01-13
申请人： Tesco Corporation
发明人： NIKIFORUK, Kevin James
IPC分类号： F16K17/30 , E21B34/08 , F16K3/26 , F16K3/34
CPC分类号： G03G21/20 , B41J11/007 , B41J29/377 , E21B7/20 , E21B21/103 , E21B34/063 , E21B34/14 , G03G15/6573
摘要： A method of drilling a well and installing a liner includes assembling concentric inner and outer strings of tubulars. A drill bit is located at the lower end of the inner string and a liner with a liner hanger makes up part of the outer string. The inner and outer strings may be rotated in unison to drill the well. A valve is located upstream of a liner hanger control tool used to release and set the liner hanger in the drill string. The valve comprises a ported sleeve that slides relative to a ported housing to meter flow from the interior of the drill string to the annular space. The redirected flow maintains a minimum flow rate in the annular space to prevent cuttings from settling on the control tool. A portion of the valve can further be used with a dart to manipulate downstream equipment.

4. 发明授权

EP1825096B1 WELLBORE TUBULAR HANDLING TORQUE MULTIPLIER 有权
标题翻译：扭矩放大器用于处理油井管
公开(公告)号：EP1825096B1
公开(公告)日：2011-01-12
申请号：EP05808104.3
申请日：2005-11-08
申请人： Tesco Corporation
发明人： ANGMAN, Per, G.
IPC分类号： E21B19/15 , E21B19/00
CPC分类号： E21B19/16
摘要： A tubular handling torque multiplier includes a torque input end for connection to the quill of a top drive, a torque output end for connection at least indirectly to a well tubular joint to be driven to rotate, gears for adjusting the torque output from the torque output end from that torque input at the torque input end, an axial support between the torque input end and the torque output end to allow axial stress to be communicated from the torque output end to the torque input end and a fluid circulating path open between the torque input end and the torque output end.

5. 发明授权

EP1604093B1 METHOD AND APPARATUS FOR DRILLING A BOREHOLE WITH A BOREHOLE LINER 有权
标题翻译：方法和设备井的拥有完善LINER钻
公开(公告)号：EP1604093B1
公开(公告)日：2009-09-09
申请号：EP04720343.5
申请日：2004-03-12
申请人： Tesco Corporation , Tessari, Robert , Houtchens, Bruce D.
发明人： TESSARI, Robert , HOUTCHENS, Bruce, D.
IPC分类号： E21B7/20 , E21B21/10
CPC分类号： E21B43/10 , E21B7/20 , E21B21/103 , E21B33/14
摘要： A method for drilling a borehole includes; providing a drill string of drill pipe including a center bore, a distal end, a bit assembly at the distal end; hanging a liner from the drill string, thereby forming an annular space between the drill string and the liner and with the bit assembly extending from a lower end of the liner; positioning the drill string with the liner attached thereto in a borehole such that a second annular space is formed between the liner and the borehole wall; operating the bit assembly to proceed with drilling the borehole; and circulating drilling fluid down through the center bore of the drill string out through the bit assembly and down through the second annular space between the liner and the borehole wall, the drilling fluid returning up through the annular space between the drill string and the liner. An apparatus for use in this method is also described.

6. 发明授权

EP1373678B1 DOWNHOLE AXIAL FORCE GENERATING TOOL 有权
标题翻译：孔车刀，用于产生轴向力
公开(公告)号：EP1373678B1
公开(公告)日：2006-12-06
申请号：EP02706578.8
申请日：2002-03-28
申请人： Tesco Corporation
发明人： ANGMAN, Per, G. , HUGHES, John
IPC分类号： E21B23/10 , E21B23/04 , E21B17/06
CPC分类号： E21B23/04 , E21B17/06 , E21B23/10
摘要： An axial force generating tool for applying a force on a structure positioned within a borehole is taught. The tool includes a housing (19) sized to fit within the borehole in which the tool is required to act; an outer seal (38) disposed about the housing and selected to create a seal between the housing and the borehole; an inner bore (32) through the housing including a seal to prevent flow from the inner bore out through the lower end; an opening (34) to the inner bore above the seal; a bracing means (36) for maintaining the housing against axial movement in the borehole once the housing is in a selected position within the borehole; a piston (27) mounted in sliding engagement wiht the housing for axial movement relative to the housing, the piston positioned to act between a pressure differential establishable between the inner bore and the borehole between the seal and the lower end to drive the piston axially relative to the housing; and a grapple connected to the piston for axial movement therewith.

7. 发明公开

EP1549821A1 PIPE CENTRALIZER AND METHOD OF FORMING 有权
标题翻译：管道集中器和成形方法
公开(公告)号：EP1549821A1
公开(公告)日：2005-07-06
申请号：EP03797130.6
申请日：2003-09-23
申请人： Tesco Corporation
发明人： SLACK, Maurice, William
IPC分类号： E21B17/10 , B21D26/02
CPC分类号： E21B17/1078 , B21D17/00 , B21D26/033 , E21B17/1064 , Y10T29/49 , Y10T29/49805
摘要： A centralizer for installing on a metal pipe. The centralizer includes a generally tubular body having a central opening sufficiently large to allow insertion therethrough of a pipe having an external diameter; a sidewall of substantially uniform thickness including an inner-facing surface directed to the central opening and an outer-facing surface onto which are formed a plurality of outwardly protruding ribs by hydroforming the sidewall. A method for hydroforming a centralizer including placing a length of metal tubular work piece, the work piece having a sidewall and an central opening, inside a confining surface comprised of mold elements, the mold elements including cavities spaced and shaped in the configuration of desired side wall centralizer ribs, the mold elements being supported substantially against expansion radially outward from their position about the tubular work piece; applying sufficient pressure to the side wall through the inner bore to force the tubular sidewall radially outward against the confining surface and into the mold cavities to plastically deform the side wall to form centralizer ribs on the side wall; and removing the tubular work piece from the confining surface.
摘要翻译：用于安装在金属管道上的扶正器。扶正器包括大致管状的主体，该主体具有足够大的中心开口以允许具有外径的管道插入其中; 具有基本均匀厚度的侧壁，所述侧壁包括指向中心开口的面向内的表面和通过液压成形侧壁而在其上形成多个向外突出的肋的外表面。一种用于液压成形扶正器的方法，包括将一段金属管状工件放置在由模具元件构成的限定表面内的一个侧壁和一个中央开口，所述模具元件包括间隔开并且成形为期望侧所述模具元件基本上抵抗从它们围绕所述管状工件的位置径向向外膨胀地被支撑; 通过内孔向侧壁施加足够的压力以迫使管状侧壁径向向外抵靠约束表面并进入模腔中以使侧壁塑性变形以在侧壁上形成定心器肋; 并从限制表面移除管状工件。

8. 发明公开

EP2661532A1 WELL TOOL WITH SHEARABLE COLLET 审中-公开
标题翻译：具有爆炸性SCHER套 - 孔车刀
公开(公告)号：EP2661532A1
公开(公告)日：2013-11-13
申请号：EP11855052.4
申请日：2011-12-30
申请人： Tesco Corporation
发明人： ERIKSEN, Erik, P. , TATE, Barry, J.
IPC分类号： E21B23/04 , E21B19/16 , E21B43/10 , E21B7/20
CPC分类号： E21B17/06 , E21B23/02 , E21B23/04
摘要： A running tool for well drilling operations is carried by a running string into and out of a wellbore. A collet is carried by the running tool, the collet having fingers with a radially expanded position arranged to latch against a wellbore shoulder in the wellbore. The fingers are resiliently and radially contractible. A shear element is carried by the collet, the shear element preventing the fingers from radially contracting to unlatch the running tool while the shear element is intact. If a selected axial force is applied against the shear element, it shears, freeing the collet fingers to retract. The collet may be part of a tool to set and release a liner hanger from engagement with a string of casing.

9. 发明授权

EP1915506B8 CASING BOTTOM HOLE ASSEMBLY RETRIEVAL PROCESS 有权
标题翻译： FOR背法带一名孔装置由壳体
公开(公告)号：EP1915506B8
公开(公告)日：2013-04-10
申请号：EP06775057.0
申请日：2006-08-02
申请人： Tesco Corporation
发明人： ANGMAN, Per G. , TESSARI, Robert M. , WARREN, Tommy M.
IPC分类号： E21B23/08 , E21B19/02 , E21B23/14
CPC分类号： E21B7/20 , E21B10/64 , E21B23/08 , E21B23/14

10. 发明授权

EP1880076B1 PIPE HANDLING DEVICE AND SAFETY MECHANISM 有权
标题翻译：管具处理装置与安全机制
公开(公告)号：EP1880076B1
公开(公告)日：2010-11-24
申请号：EP06741474.8
申请日：2006-05-09
申请人： Tesco Corporation
发明人： CARR, William , BROWN, Matthew , ANGMAN, Per, G.
IPC分类号： E21B19/16 , E21B19/08
CPC分类号： E21B19/16 , E21B19/06 , E21B19/08
摘要： A pipe handling assembly includes: a pipe engaging apparatus including a pipe gripping mechanism connectable to a top drive such that the top drive transmits rotational movement and axial movement to the pipe gripping mechanism; a pipe handling device for mounting onto the pipe engaging apparatus, the pipe handling device including a link hanger mounted on the pipe engaging apparatus, a link arm having a first end pivotally connectable to the link hanger and an outboard end selected to carry a pipe into a position to be gripped by the pipe engaging apparatus; a bearing for isolating rotational movement to the pipe gripping mechanism from the link hanger; and a connection for rigidly connecting the link hanger to the pipe engaging apparatus during operation of the pipe handling assembly, the connection selected to substantially prevent the link hanger from rotating with the pipe gripping mechanism should the bearing seize.

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