Displacement unit for an electric submersible pump
AssigneeSchlumberger Technology Corporation
InventorsAndrey Igorevich SHOSTAK, Vladimir Vladimirovich CHUGUNOV, Nikita Andreevich FISIVSKI, Victoria Vladislavovna IVANYKINA
Life of this patent
Estimating the term…
Abstract
A displacement unit. The displacement unit may include a body, a head shaft, a base shaft, a middle shaft, and radial bearings. The body may include a head and a base. The head shaft may extend through the head of the body. The base shaft may extend through the base of the body. The middle shaft may be coupled to the head shaft via a first flexible coupling and coupled to the base shaft via a second flexible coupling. The radial bearings may be disposed within body to support at least one of the head shaft, the middle shaft, or the base shaft.
Claims19
A displacement unit comprising:
- a body comprising a head and a base;
- a head shaft extending through the head of the body;
- a base shaft extending through the base of the body
- a middle shaft coupled to the head shaft via a first flexible coupling and coupled to the base shaft via a second flexible coupling, wherein the first flexible coupling comprises:
- a first body coupled to the head shaft;
- a second body coupled to the middle shaft and to the first body;
- and
- a lamination pack disposed between the first body and the second body that allows for angular displacement between the head shaft and the middle shaft while transferring torque between the head shaft and the middle shaft;
- and
- radial bearings disposed within body to support at least one of the head shaft, the middle shaft, or the base shaft.
(canceled)
An electric submersible pump (“ESP”) comprising;
- a motor comprising a motor shaft;
- and
- a protector comprising a protector shaft;
- a displacement unit operably coupling the motor to the protector and comprising:
- a body comprising a head and a base, the protector shaft extending through the head of the body and the motor shaft extending through the base of the body;
- a middle shaft coupled to the protector shaft via a first flexible coupling and coupled to the motor shaft via a second flexible coupling, wherein the first flexible coupling comprises:
- a first body coupled to the head shaft;
- a second body coupled to the middle shaft and to the first body;
- and
- a lamination pack disposed between the first body and the second body that allows for angular displacement between the head shaft and the middle shaft while transferring torque between the head shaft and the middle shaft;
- and
- radial bearings disposed within body to support at least one of the motor shaft, the middle shaft, or the protector shaft.
(canceled)
A method of producing hydrocarbons comprising:
- disposing an ESP within a wellbore;
- and
- transferring torque from a motor of the ESP to a displacement unit of the ESP;
- and
- transferring torque from the displacement unit to a protector of the ESP.
- wherein transferring torque from the displacement unit of the ESP to the protector of the ESP comprises transferring torque though middle shaft of the displacement unit to a protector shaft of the protector via a flexible coupling.
(canceled)
Dependencies are inferred from the claim text.