US 5,782,261 AGranted

Coiled tubing sidepocket gas lift mandrel system

OwnerBilly G. Becker, David A. Tucker, Sr.inventors

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Abstract

A sidepocket gas lift mandrel assembly for installation in coiled tubing for providing gas lift to oil and gas wells is disclosed. The mandrel assembly includes inwardly projecting members offset from the centerline of the internal diameter of the housing which is adapted to receive wireline retrievable valves and latches. The gas lift mandrel housing is adapted to be connected to coiled tubing and may be of various geometric configurations for allowing the gas lift mandrel to be run into the well with coiled tubing. Conventional kickover tools are modified to include helical grooves that engage inwardly projecting camming and orienting surfaces of the mandrel assembly to orient, position and stabilize the tools while installing or retrieving wireline retrievable valve and latch assemblies.

Claims1

Dependent claims

A sidepocket gas lift mandrel assembly for use in coiled tubing and for receiving a wireline retrievable gas lift valve comprising:

a gas lift mandrel housing having inwardly projecting elongated members offset from the centerline of the mandrel including a first inwardly projecting member adapted to engage an oil tool and to activate said oil tool, a second inwardly projecting elongated member offset from the longitudinal centerline of the mandrel for receiving and holding a wireline retrievable latch, a third inwardly projecting elongated member having a bore therethrough for receiving a wireline retrievable gas lift valve and a port providing fluid communication from the inside of said gas lift mandrel assembly and the outside of said gas lift mandrel assembly and upper and lower inwardly projecting elongated member for contacting and aligning an oil tool to position said oil tool with respect to said inwardly projecting elongated members.

Dependencies are inferred from the claim text.

Facts

Application: 08/533,403Filed 25 Sep 1995
Granted: 21 Jul 1998
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F04F 1/20
The fluid medium being mixed with, or generated from the liquid to be pumped: specially adapted for raising liquids from great depths, e.g. in wells
E21B 23/03
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells: for setting the tools into, or…
Y10T 137/2934
Diverse fluid containing pressure systems: gas lift valves for wells
F04F
Pumping of fluid by direct contact of another fluid or by using