US 12,590,517 B2 · System and method for installing tool for use with artificial lift mandrel

Abstract

A system used with a gas lift valve on a tubing string in a borehole includes a mandrel assembly and a tool assembly. The mandrel assembly holds the gas lift valve disposed in communication between a through-bore and a borehole port. The mandrel assembly couples to the tubing string and defines a lock profile, an uphole seal bore profile, and a downhole seal bore profile. The tool assembly is configured to retrievably deploy in the tubing string. The tool assembly has a lock, an uphole seal, an auxiliary tool, and a downhole seal. The lock is releasably engageable with the lock profile, and the uphole and downhole seals are sealably engageable respectively with the seal bore profiles. The auxiliary tool, which can be a jet pump or a venturi device, has an annulus port that communicates with an annular area of the throughbore sealed by the uphole and downhole seals.

Claims21

Dependent claims

A method of performing gas lift on a tubing string in a borehole, the method comprising:

deploying a mandrel assembly on the tubing string in the borehole, the mandrel assembly holding a gas lift valve installed in the mandrel assembly either before or after deployment of the mandrel assembly;
initially performing a gas lift operation using the gas lift valve in the mandrel assembly without having a tool assembly installed;
identifying a decline of produced fluid in the gas lift operation;
and
in response to the decline,
removably installing the tool assembly in a throughbore of the mandrel assembly adjacent the gas lift valve by:
sealing at least one annulus port of the tool assembly with the gas lift valve;
and
releasably engaging a lock on the tool assembly with a lock profile defined inside the throughbore of the mandrel assembly;
and
performing a modified gas lift operation using the gas lift valve in the mandrel assembly having the tool assembly installed.

8 more elements

A method of performing gas lift on a tubing string in a borehole, the method comprising:

deploying mandrel assemblies on the tubing string in the borehole, each respective one of the mandrel assemblies holding a gas lift valve installed therein either before or after deployment of the respective mandrel assembly;
initially performing a gas lift operation using the gas lift valves in the mandrel assemblies;
identifying a decline of produced fluid in the gas lift operation;
and
in response to the decline,
selecting one or more selected ones of the mandrel assemblies to each receive a respective tool assembly;
removably installing the respective tool assembly in a throughbore of each selected mandrel assembly adjacent the respective gas lift valve by:
sealing at least one annulus port of the respective tool assembly with the respective gas lift valve;
and
releasably engaging a lock on the respective tool assembly with a lock profile defined inside the throughbore of the selected mandrel assembly;
and
performing a modified gas lift operation using the gas lift valves in the mandrel assemblies.

9 more elements

Dependencies are inferred from the claim text.

System and method for installing tool for use with artificial lift mandrel

Life of this patent

System and method for installing tool for use with artificial lift mandrel

Life of this patent

Abstract

Claims21