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Patent Agency Ranking
公开(公告)号：US11225847B2
公开(公告)日：2022-01-18
申请号：US16636892
申请日：2018-08-13
Applicant: Schlumberger Technology Corporation
Inventor： Bastiaan Liezenberg , Harold Tenorio , Jeffrey Ham , Lap Tran
Abstract: An apparatus includes a tube having at least one flow outlet in communication with an interior of the tube. The apparatus includes valves for selectively connecting the flow outlet to one of a fluid return line and an inlet of a fluid pump. The apparatus also includes valves for selectively connecting the outlet of the pump to the fluid return line and closing the pump outlet. A method includes returning mud from a wellbore into a riser extending between the wellbore and a drilling unit on the surface of a body of water. Flow from a tube in the riser is selectively diverted to an inlet to a fluid pump or a mud return line extending from the tube to the drilling unit. When the flow is diverted to return mud flow in the riser is stopped above the tube. When flow is diverted to the inlet of the pump, the pump is operated to lift the mud to maintain a selected mud pressure in the wellbore.
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公开(公告)号：US11377917B2
公开(公告)日：2022-07-05
申请号：US16469641
申请日：2017-12-07
Applicant: Schlumberger Technology Corporation
Inventor： Jerod Bushman , Shelby Wayne Carter , Henrix Soto , Jeffrey Ham
Abstract: An apparatus includes a conduit forming part of a drilling fluid return path from a wellbore. The the conduit has at least one well outflow control in the conduit. The at least one well fluid outflow control has at least two annular flow restrictors each separately operable to close to a respective inner diameter.
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公开(公告)号：US11072982B2
公开(公告)日：2021-07-27
申请号：US16469136
申请日：2017-12-11
Applicant: Schlumberger Technology Corporation
Inventor： Jerod Bushman , Gocha Chochua , Shelby Wayne Carter , Henrix Soto , Jeffrey Ham
Abstract: A conduit forming part of a drilling fluid return path from a wellbore has at least one flow restrictor disposed on an interior surface of the conduit. A drill string is disposed through the interior of the conduit and has at least one flow restrictor disposed on an exterior surface of the drill string. The drill string is longitudinally movable through the conduit to enable placing the flow restrictor in the conduit, and the flow restrictor on the drill string at a selected longitudinal distance from each other.
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公开(公告)号：US20200165888A1
公开(公告)日：2020-05-28
申请号：US16636892
申请日：2018-08-13
Applicant: Schlumberger Technology Corporation
Inventor： Bastiaan Liezenberg , Harold Tenorio , Jeffrey Ham , Lap Tran
Abstract: An apparatus includes a tube having at least one flow outlet in communication with an interior of the tube. The apparatus includes valves for selectively connecting the flow outlet to one of a fluid return line and an inlet of a fluid pump. The apparatus also includes valves for selectively connecting the outlet of the pump to the fluid return line and closing the pump outlet. A method includes returning mud from a wellbore into a riser extending between the wellbore and a drilling unit on the surface of a body of water. Flow from a tube in the riser is selectively diverted to an inlet to a fluid pump or a mud return line extending from the tube to the drilling unit. When the flow is diverted to return mud flow in the riser is stopped above the tube. When flow is diverted to the inlet of the pump, the pump is operated to lift the mud to maintain a selected mud pressure in the wellbore.
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公开(公告)号：US20200080392A1
公开(公告)日：2020-03-12
申请号：US16469641
申请日：2017-12-07
Applicant: Schlumberger Technology Corporation
Inventor： Jerod Bushman , Shelby Wayne Carter , Henrix Soto , Jeffrey Ham
Abstract: An apparatus includes a conduit forming part of a drilling fluid return path from a wellbore. The the conduit has at least one well outflow control in the conduit. The at least one well fluid outflow control has at least two annular flow restrictors each separately operable to close to a respective inner diameter.
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