Patent ID: 11933150
Assignee: BAKER HUGHES OILFIELD
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 7:
8. A side pocket mandrel for use within a gas lift system deployed in a well that has an annular space surrounding the gas lift system, the side pocket mandrel comprising:
a central body that includes a central bore;
a gas lift valve pocket that is laterally offset from the central body, wherein the gas lift valve pocket includes a gas lift valve port that communicates fluid between the annular space and the gas lift valve pocket;
an internal tubing port that extends from the central bore to the gas lift valve pocket;
an automatic closing valve assembly, wherein the automatic closing valve assembly comprises:
a floating piston configured to move between a retracted position that permits flow through the gas lift valve port and a deployed position that prevents flow through the gas lift valve port; and
a spring configured to apply a force to urge the floating piston into the deployed position; and

a gas lift valve, wherein the gas lift valve forces the floating piston into the retracted position when the gas lift valve is installed within the gas lift valve pocket and wherein the floating piston is configured to automatically move to the deployed position when the gas lift valve is removed from the side pocket mandrel.