公开(公告)号：US20240410383A1

公开(公告)日：2024-12-12

申请号：US18807714

申请日：2024-08-16

Applicant: Schlumberger Technology Corporation

Inventor： Pradeep Mahadevan ,  TengFei Wang ,  Raju Ekambaram ,  Kean Wee Cheah ,  Sethuraj Arumugam ,  Kim Hoo Goh

IPC: F04D29/046 ,  E21B43/12 ,  F04D13/10 ,  F16C17/02

Abstract: Anti-rotation bearing assemblies for electric submersible pumps are provided. An electric submersible pump includes a plurality of centrifugal pump stages, each stage including a rotating impeller and a stationary diffuser mounted on a shaft coupled to a motor. In use, the motor rotates the shaft, which rotates the impeller within the stationary diffuser. A bearing assembly can include a bearing sleeve disposed about the shaft and a bushing disposed radially between the bearing sleeve and the diffuser. The bearing sleeve rotates with the shaft in operation, and the bushing remains stationary with the diffuser. The bushing can have an external key that is received in a keyway or groove in the diffuser to act as an anti-rotation feature. In other variations, the bushing can have an eccentric or oblique profile, which can act as an anti-rotation feature.

公开(公告)号：US20170167498A1

公开(公告)日：2017-06-15

申请号：US15117726

申请日：2015-02-11

Applicant: Schlumberger Technology Corporation

Inventor： Lye Heng Chang ,  Jerome Ang Sze Jiunn ,  Kean Wee Cheah ,  David Milton Eslinger ,  Ruslan Alexandrovich Bobkov

IPC: F04D29/041 ,  F04D1/06 ,  F04D29/20 ,  F04D29/44 ,  F04D29/22 ,  E21B43/12 ,  F04D13/10

CPC classification number: F04D29/041 ,  E21B43/128 ,  E21B43/2406 ,  F04D1/06 ,  F04D1/063 ,  F04D13/10 ,  F04D29/0416 ,  F04D29/042 ,  F04D29/20 ,  F04D29/2261 ,  F04D29/445 ,  F04D29/628

Abstract: An electric submersible pump (ESP) can include a shaft; an electric motor configured to rotatably drive the shaft; a housing; a stack of diffusers disposed in the housing; and impellers operatively coupled to the shaft. Various other apparatuses, systems, methods, etc., are also disclosed.

公开(公告)号：US20240410372A1

公开(公告)日：2024-12-12

申请号：US18735552

申请日：2024-06-06

Applicant: Schlumberger Technology Corporation

Inventor： Raju Ekambaram ,  Ruslan Alexandrovich Bobkov ,  Maksim Radov ,  Alejandro Camacho Cardenas ,  David Milton Eslinger ,  Pradeep Mahadevan ,  Teng Fei Wang ,  Kean Wee Cheah ,  Jaiprakash Natarajan ,  Sethuraj Arumugam ,  Benoit Deville

IPC: F04D13/08 ,  E21B43/12 ,  F04D1/06 ,  F04D13/02 ,  F04D13/06 ,  F04D29/046 ,  F04D29/051 ,  F04D29/44 ,  F04D29/62

Abstract: Systems and methods facilitate pumping of various fluids such as well fluids. An electric submersible pumping system is constructed with an outer housing that contains an integrated pump and motor. The pump may include an impeller disposed within a stator of the motor. The integration of the pump and the motor enables elimination of various components of traditional electric submersible pumping systems to thus provide a simpler and more compact system for pumping fluids.

公开(公告)号：US11041496B2

公开(公告)日：2021-06-22

申请号：US15740679

申请日：2015-06-30

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Kean Wee Cheah ,  David Milton Eslinger

IPC: F04D13/10 ,  F04D1/06 ,  F04D7/04 ,  F04D29/041 ,  F04D29/70 ,  F04D13/02 ,  F04D29/08 ,  F04D29/22

Abstract: A mixed-flow impeller for an electric submersible pump can include a lower end and an upper end; a hub that includes a through bore that defines an axis; blades that extend at least in part radially outward from the hub where each of the blades includes a leading edge and a trailing edge; an upper balance ring that includes a radially inward facing balance chamber surface and a radially outward facing diffuser clearance surface; and an upper guard ring disposed radially outwardly from the upper balance ring where the upper guard ring includes an axially facing diffuser clearance surface that is disposed axially between the trailing edges of the blades and the upper end.

公开(公告)号：US09683571B2

公开(公告)日：2017-06-20

申请号：US14171653

申请日：2014-02-03

Applicant: Schlumberger Technology Corporation

Inventor： Tony R. Morrison ,  David Milton Eslinger ,  Kean Wee Cheah ,  Lye Heng Chang ,  Raju Ekambaram ,  Narayanan Lakshmanan

IPC: F04D1/06 ,  F04D29/44 ,  F04D29/54 ,  F04D29/64

CPC classification number: F04D1/063 ,  F04D29/445 ,  F04D29/548 ,  F04D29/648

Abstract: A centrifugal pump stage with increased compressive load capacity is provided. In an implementation, a centrifugal pump stage includes a diffuser with outside wall capable of supporting increased axial forces. A mating surface of the outer wall can support axial forces generated by a stack of subsequent pump stages across the entire thickness of the outer wall. The diffuser can be a two-piece assembly including a load bearing module and a flow diffusing module. The load bearing module may be a cylinder of strong tubular alloy while the flow diffusing module can be separately cast in a manner that improves hydraulic efficiency. Various means for radially positioning the pump stages relieve the load bearing module from the task of aligning additional pump stages. A single rigid tube may also be used as the load bearing module for multiple pump stages. The tube may be made with a thin wall to increase pump volume.

公开(公告)号：US12085086B2

公开(公告)日：2024-09-10

申请号：US17753792

申请日：2020-09-18

Applicant: Schlumberger Technology Corporation

Inventor： Pradeep Mahadevan ,  TengFei Wang ,  Raju Ekambaram ,  Kean Wee Cheah ,  Sethuraj Arumugam ,  Kim Hoo Goh

IPC: F04D29/046 ,  E21B43/12 ,  F04D13/10 ,  F16C17/02

CPC classification number: F04D29/046 ,  E21B43/128 ,  F04D13/10 ,  F16C17/02

Abstract: Anti-rotation bearing assemblies for electric submersible pumps are provided. An electric submersible pump includes a plurality of centrifugal pump stages, each stage including a rotating impeller and a stationary diffuser mounted on a shaft coupled to a motor. In use, the motor rotates the shaft, which rotates the impeller within the stationary diffuser. A bearing assembly can include a bearing sleeve disposed about the shaft and a bushing disposed radially between the bearing sleeve and the diffuser. The bearing sleeve rotates with the shaft in operation, and the bushing remains stationary with the diffuser. The bushing can have an external key that is received in a key way or groove in the diffuser to act as an anti-rotation feature. In other variations, the bushing can have an eccentric or oblique profile, which can act as an anti-rotation feature.

公开(公告)号：US11692551B2

公开(公告)日：2023-07-04

申请号：US17352450

申请日：2021-06-21

Applicant: Schlumberger Technology Corporation

Inventor： Kean Wee Cheah ,  David Milton Eslinger

IPC: F04D13/10 ,  F04D1/06 ,  F04D7/04 ,  F04D29/041 ,  F04D29/70 ,  F04D13/02 ,  F04D29/08 ,  F04D29/22

CPC classification number: F04D13/10 ,  F04D1/06 ,  F04D7/04 ,  F04D13/021 ,  F04D29/0413 ,  F04D29/708 ,  F04D29/086 ,  F04D29/2272

Abstract: A mixed-flow impeller for an electric submersible pump can include a lower end and an upper end; a hub that includes a through bore that defines an axis; blades that extend at least in part radially outward from the hub where each of the blades includes a leading edge and a trailing edge; an upper balance ring that includes a radially inward facing balance chamber surface and a radially outward facing diffuser clearance surface; and an upper guard ring disposed radially outwardly from the upper balance ring where the upper guard ring includes an axially facing diffuser clearance surface that is disposed axially between the trailing edges of the blades and the upper end.

公开(公告)号：US20220178376A1

公开(公告)日：2022-06-09

申请号：US17442642

申请日：2020-03-26

Applicant: Schlumberger Technology Corporation

Inventor： Raju Ekambaram ,  Ruslan Alexandrovich Bobkov ,  Maksim Radov ,  Alejandro Camacho Cardenas ,  David Milton Eslinger ,  Pradeep Mahadevan ,  Teng Fei Wang ,  Kean Wee Cheah ,  Jaiprakash Natarajan ,  Sethuraj Arumugam ,  Benoit Deville

IPC: F04D13/08 ,  F04D13/06 ,  F04D29/44 ,  F04D1/06 ,  F04D29/62 ,  F04D13/02 ,  F04D29/051 ,  E21B43/12

Abstract: Systems and methods facilitate pumping of various fluids such as well fluids. An electric submersible pumping system is constructed with an outer housing that contains an integrated pump and motor. The pump may include an impeller disposed within a stator of the motor. The integration of the pump and the motor enables elimination of various components of traditional electric submersible pumping systems to thus provide a simpler and more compact system for pumping fluids.

公开(公告)号：US20220090609A1

公开(公告)日：2022-03-24

申请号：US17448568

申请日：2021-09-23

Applicant: Schlumberger Technology Corporation

Inventor： David Eslinger ,  Kean Wee Cheah

IPC: F04D29/66 ,  F04D13/08 ,  F04D29/046 ,  F04D1/06 ,  F04D29/44

Abstract: Systems and features for improving sand control in pumps are provided. These features can be used in centrifugal pumps employed in a variety of oilfield applications, such as in electric submersible pumping systems positioned downhole in a wellbore to pump oil or other fluids. Such features include shielded anti-swirl ribs positioned in the balance chamber.

公开(公告)号：US10451079B2

公开(公告)日：2019-10-22

申请号：US15117726

申请日：2015-02-11

Applicant: Schlumberger Technology Corporation

Inventor： Lye Heng Chang ,  Jerome Ang Sze Jiunn ,  Kean Wee Cheah ,  David Milton Eslinger ,  Ruslan Alexandrovich Bobkov

IPC: F04D29/22 ,  F04D29/44 ,  F04D29/041 ,  F04D13/10 ,  E21B43/12 ,  E21B43/24 ,  F04D1/06 ,  F04D29/62 ,  F04D29/042 ,  F04D29/20

Abstract: An electric submersible pump (ESP) can include a shaft; an electric motor configured to rotatably drive the shaft; a housing; a stack of diffusers disposed in the housing; and impellers operatively coupled to the shaft. Various other apparatuses, systems, methods, etc., are also disclosed.