Electric submersible pump (ESP) with gas handling shroud inlet
AssigneeHalliburton Energy Services, Inc.
InventorsDonn J. Brown, Ketankumar Kantilal Sheth, Trevor Alan Kopecky, Casey Laine Newport
Life of this patent
Estimating the term…
Abstract
An electric submersible pump (ESP) assembly. The ESP assembly comprises an electric motor, a centrifugal pump mechanically coupled to the electric motor, and a gas handling inverted shroud assembly.
Claims20
An electric submersible pump (ESP) assembly, comprising:
- an electric motor;
- a centrifugal pump mechanically coupled to the electric motor;
- and
- a gas handling inverted shroud assembly comprising
- a shroud inlet and
- a lower shroud body comprising a first tubing having a first diameter, a taper section coupled to the first tubing above the first tubing that has a diameter that transitions between the first diameter and a second diameter, wherein the second diameter is different from the first diameter, and a second tubing having the second diameter coupled to the taper section above the taper section and coupled to the shroud inlet.
An electric submersible pump (ESP) assembly, comprising:
- an electric motor;
- a centrifugal pump mechanically coupled to the electric motor;
- and
- a gas handling inverted shroud assembly, wherein the inverted shroud assembly comprises a shroud inlet having an inward taper below openings defined by the shroud inlet.
A method of artificially lifting fluid in a wellbore by an electric submersible pump (ESP) assembly, comprising:
- separating a flowing reservoir fluid into a high gas void fraction fluid and a low gas void fraction fluid by inducing a rotational movement in the reservoir fluid by directing vanes of a shroud inlet of an inverted shroud assembly of an ESP assembly, wherein the directing vanes are integrated with the shroud inlet;
- providing mechanical torque by an electric motor to a centrifugal pump of the ESP assembly;
- and
- lifting the low gas void fraction fluid to a wellhead by the centrifugal pump.
A method of artificially lifting fluid in a wellbore by an electric submersible pump (ESP) assembly, comprising:
- separating a flowing reservoir fluid into a high gas void fraction fluid and a low gas void fraction fluid by an inverted shroud assembly of an ESP assembly, wherein separating the flowing reservoir fluid into a high gas void fraction fluid and a low gas void fraction fluid comprises exhausting gas bubbles or high gas void fraction fluid out of a port in a shroud clamp of the inverted shroud assembly into a wellbore above the ESP assembly;
- providing mechanical torque by an electric motor to a centrifugal pump of the ESP assembly;
- and
- lifting the low gas void fraction fluid to a wellhead by the centrifugal pump.
A method of artificially lifting fluid in a wellbore by an electric submersible pump (ESP) assembly, comprising:
- assembling an ESP assembly proximate to a wellbore, where the ESP assembly comprises an electric motor, a centrifugal pump, and an inverted shroud assembly;
- coupling the ESP assembly to a production tubing string by securing the inverted shroud assembly to the production tubing string using a shroud clamp, wherein the shroud clamp defines ports in an upper part of the shroud clamp;
- running the ESP assembly into the wellbore;
- providing electric power to the electric motor;
- separating a flowing reservoir fluid into a high gas void fraction fluid and a low gas void fraction fluid by the inverted shroud assembly, wherein gas of the high gas void fraction is provided an escape path by the ports in the upper part of the shroud clamp;
- and
- lifting the low gas void fraction fluid by the centrifugal pump to a wellhead located over the wellbore.
Dependencies are inferred from the claim text.