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：US20250101994A1

公开(公告)日：2025-03-27

申请号：US18833307

申请日：2023-04-28

Applicant: Schlumberger Technology Corporation

Inventor： Arthur Ignatius Watson ,  Stanislav Ivanov ,  David Milton Eslinger ,  Pradeep Mahadevan ,  Raju Ekambaram ,  Jaiprakash Natarajan ,  You Cheng Jee ,  Narayanan Lakshmanan

IPC: F04D29/66 ,  F04D13/08 ,  F04D29/043

Abstract: A technique facilitates the reduction of vibration in a variety of devices which have rotating components. According to an embodiment, a system may combine a shaft, a rotor mounted along the shaft for rotation with the shaft, and a vibration reduction system. The vibration reduction system incorporates the use of a key and keyway in a manner which helps balance the rotor, thus reducing vibration during operation. In some applications, the vibration reduction system is able to reduce eccentric positioning of the rotor on the shaft due to, for example, assembly clearances.

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：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：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：US12025136B2

公开(公告)日：2024-07-02

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

CPC classification number: F04D13/086 ,  E21B43/128 ,  F04D1/06 ,  F04D13/024 ,  F04D13/0646 ,  F04D29/046 ,  F04D29/0513 ,  F04D29/445 ,  F04D29/628

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：US20240175465A1

公开(公告)日：2024-05-30

申请号：US18553225

申请日：2022-03-31

Applicant: Schlumberger Technology Corporation

Inventor： Raju Ekambaram ,  You Cheng Jee ,  Arthur I. Watson ,  Pradeep Mahadevan

IPC: F16C17/02 ,  E21B43/12 ,  H02K5/132 ,  H02K5/167

CPC classification number: F16C17/02 ,  H02K5/132 ,  H02K5/167 ,  E21B43/128 ,  F16C2352/00 ,  F16C2380/26

Abstract: Rotor bearings are provided. The motor bearing can be used in an electric submersible pump motor. The bearing can include a body and one or more anti-rotation pins disposed partially in a groove in an outer surface of the body and configured to be received in a corresponding keyway in an inner diameter of a stator. The anti-rotation pin prevents or inhibits rotation of the bearing relative to the stator.

公开(公告)号：US11920599B2

公开(公告)日：2024-03-05

申请号：US17753797

申请日：2020-09-18

Applicant: Schlumberger Technology Corporation

Inventor： Raju Ekambaram ,  Teng Fei Wang ,  Pradeep Mahadevan ,  Kean Wee Cheah ,  David Milton Eslinger

IPC: F04D13/10 ,  F04D25/06 ,  F04D29/041 ,  F04D29/047 ,  F04D29/06 ,  F04D29/44

CPC classification number: F04D13/10 ,  F04D25/062 ,  F04D29/041 ,  F04D29/0473 ,  F04D29/061 ,  F04D29/448 ,  F04D29/0413

Abstract: 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. An upthrust washer can be disposed axially between an impeller and its associated diffuser at or near a tip of the impeller, and the gap between the impeller tip and diffuser can define the end play or axial clearance for the pump. If the upthrust washer wears away, upthrust rubbing occurs at the impeller tip instead of proximate the pump shaft to advantageously help protect the shaft from damage or failure related to heat. In some ESPs, an upthrust bearing assembly can be located at the pump head. A downthrust washer can be disposed in an upstream facing groove of the impeller. The downthrust washer can have a thickness greater than 0.10 in.

公开(公告)号：US20220282732A1

公开(公告)日：2022-09-08

申请号：US17753797

申请日：2020-09-18

Applicant: Schlumberger Technology Corporation

Inventor： Raju Ekambaram ,  Teng Fei Wang ,  Pradeep Mahadevan ,  Kean Wee Cheah ,  David Milton Eslinger

IPC: F04D13/10 ,  F04D29/047

Abstract: 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. An upthrust washer can be disposed axially between an impeller and its associated diffuser at or near a tip of the impeller, and the gap between the impeller tip and diffuser can define the end play or axial clearance for the pump. If the upthrust washer wears away, upthrust rubbing occurs at the impeller tip instead of proximate the pump shaft to advantageously help protect the shaft from damage or failure related to heat. In some ESPs, an upthrust bearing assembly can be located at the pump head. A downthrust washer can be disposed in an upstream facing groove of the impeller. The downthrust washer can have a thickness greater than 0.10 in.