公开(公告)号：EP2910728B1

公开(公告)日：2018-07-04

申请号：EP15154968.0

申请日：2015-02-13

申请人： Weatherford Technology Holdings, LLC

发明人： Bansal, Ram K. ,  George, Geoff ,  Buchanan, Gerald Wes Don ,  Cunningham, Justin ,  De Leon, Eisenhower ,  Noske, Joe ,  Ring, Lev ,  Leal, Jerlib J

IPC分类号： E21B19/16 ,  E21B21/06

CPC分类号： E21B21/106 ,  E21B3/00 ,  E21B19/16 ,  E21B21/06 ,  E21B34/14 ,  E21B2034/007

摘要： A flow sub for use with a drill string includes a tubular housing having a longitudinal bore therethrough and a flow port through a wall thereof and a ball. The ball is disposed in the housing above the flow port, has a bore therethrough, and is rotatable relative to the housing between an open position where the ball bore is aligned with the housing bore and a closed position where a wall of the ball blocks the housing bore. The flow sub further includes a seat disposed in the housing above the ball for sealing against the ball wall in the closed position and a sleeve disposed in the housing and movable between an open position where the flow port is exposed to the housing bore and a closed position where a wall of the sleeve is disposed between the flow port and the housing bore.

公开(公告)号：EP2757228B1

公开(公告)日：2017-03-01

申请号：EP14164811.3

申请日：2011-01-05

申请人： Weatherford Technology Holdings, LLC

发明人： Bailey, Thomas F. ,  Mitchell, Mark ,  Pavel, David ,  Ring, Lev ,  Bansal, Ram K. ,  Iblings, David

IPC分类号： E21B21/10 ,  E21B19/16 ,  E21B21/12 ,  E21B7/00 ,  E21B17/18 ,  E21B43/00 ,  E21B34/00

CPC分类号： E21B17/18 ,  E21B7/00 ,  E21B19/16 ,  E21B21/10 ,  E21B21/106 ,  E21B21/12 ,  E21B2034/005

公开(公告)号：EP2725185A3

公开(公告)日：2015-11-04

申请号：EP13189644.1

申请日：2013-10-22

申请人： Weatherford Technology Holdings, LLC

发明人： Bansal, Ram K. ,  Meeks, Arthur Warren ,  Haq, Mohammed Aleemul ,  Xiao, Bin ,  Mihalj, Miroslav ,  Kippie, David Peter ,  Bailey, Thomas F.

IPC分类号： E21B10/32 ,  E21B29/00 ,  E21B23/04 ,  E21B37/00 ,  E21B37/02

CPC分类号： E21B37/00 ,  E21B10/32 ,  E21B10/322 ,  E21B10/325 ,  E21B23/04 ,  E21B29/005 ,  E21B37/02

摘要： A wellbore cleaning tool for removing irregularities along the inner surface of a wellbore tubular may include a top sub (110), a cutting assembly (100), and a bottom sub (130). The tool is operable to remove irregularities, such as debris, burrs, and jagged edges, along the inside of the wellbore tubular, and thereby provide a clean, inner surface finish. The tool may be actuated into a retracted position, an extended position, and/or a deactivated position.

摘要翻译： 用于去除沿着井眼管的内表面的不规则性的井筒清洁工具可以包括顶部接头（110），切割组件（100）和底部接头（130）。 该工具可操作以沿井筒管内部去除不规则物，例如碎片，毛刺和锯齿状边缘，并由此提供清洁的内表面处理。 工具可以被致动到缩回位置，延伸位置和/或停用位置。