公开(公告)号：EP2941531B1

公开(公告)日：2018-05-09

申请号：EP13878449.1

申请日：2013-03-13

申请人： Halliburton Energy Services, Inc.

发明人： TILLEY, David J.

IPC分类号： E21B23/04 ,  E21B34/14 ,  E21B43/14 ,  E21B34/00

CPC分类号： E21B34/14 ,  E21B23/04 ,  E21B43/14 ,  E21B2034/007

摘要： A downhole bypass valve utilizes a stationary sleeve defining an interior ball-seat. When a dropped ball is seated, fluid differential pressure is diverted to an annular area adjacent a first sliding sleeve. The sleeve slides in response to the pressure differential upon shearing of a shear pin, or similar, and opens ports to the wellbore annulus. Treatment or maintenance operations can then occur through the ports, which can be fitted with nozzles. A second sliding sleeve, independent from the first, is operated in response to dropping a second ball into the device. The second ball diverts fluid differential pressure to an annular area adjacent the second sleeve and movement occurs when a shear pin shears. The second sleeve covers the ports to the wellbore annulus and closes the valve. After a sliding sleeve shifts, pressure across the sleeve is equalized, allowing reverse flow without risk of accidental sleeve actuation.

公开(公告)号：EP2464815B1

公开(公告)日：2017-05-24

申请号：EP10744820.1

申请日：2010-08-13

申请人： Halliburton Energy Services, Inc.

发明人： KNOBLOCH, Benton ,  ROY, Todd ,  TILLEY, David J.

IPC分类号： E21B23/00

CPC分类号： E21B34/12 ,  E21B23/006

公开(公告)号：EP2526254B1

公开(公告)日：2019-06-19

申请号：EP11702103.0

申请日：2011-01-20

申请人： Halliburton Energy Services Inc.

发明人： KNOBLOCH, Benton T., Jr. ,  TILLEY, David J. ,  ROY, Todd J.

IPC分类号： E21B21/12 ,  E21B27/00 ,  E21B37/00 ,  E21B41/00

公开(公告)号：EP2941531A1

公开(公告)日：2015-11-11

申请号：EP13878449.1

申请日：2013-03-13

申请人： Halliburton Energy Services, Inc.

发明人： TILLEY, David J.

IPC分类号： E21B34/12 ,  E21B34/16

CPC分类号： E21B34/14 ,  E21B23/04 ,  E21B43/14 ,  E21B2034/007

摘要： A downhole bypass valve utilizes a stationary sleeve defining an interior ball-seat. When a dropped ball is seated, fluid differential pressure is diverted to an annular area adjacent a first sliding sleeve. The sleeve slides in response to the pressure differential upon shearing of a shear pin, or similar, and opens ports to the wellbore annulus. Treatment or maintenance operations can then occur through the ports, which can be fitted with nozzles. A second sliding sleeve, independent from the first, is operated in response to dropping a second ball into the device. The second ball diverts fluid differential pressure to an annular area adjacent the second sleeve and movement occurs when a shear pin shears. The second sleeve covers the ports to the wellbore annulus and closes the valve. After a sliding sleeve shifts, pressure across the sleeve is equalized, allowing reverse flow without risk of accidental sleeve actuation.