US 5,411,085 AGranted

Spoolable coiled tubing completion system

AssigneeCamco International Inc.

InventorsBrian K. Moore, Ronald E. Pringle

Life of this patent

Estimating the term…

Loading patent…

Abstract

A coiled tubing completion system is provided with a plurality of completion apparatus, all of which is designed flush with the diameter of the coiled tubing outside diameter for avoiding upsets and are flexible, spoolable on a coiled tubing reel and having through bores large enough to pass wireline tools for performing other operations. The spoolable coiled tubing system may use standard coiled tubing well control equipment and can be used in live wells. The flush, flexible, spoolable and through bore completion equipment may include a tubing retrievable safety valve, an annular control valve, concentric gas lift valves, a zone packer, a landing nipple, a sliding sleeve, and may include at the end a non-flexible but flush and open bore production packer and pump out plug. The completion system may be retrieved through a retrieval system.

Claims27

Dependent claims

A spoolable flexible coiled tubing completion system comprising,

a flexible coiled tubing having an outer wall and a bore therethrough, said outer wall having a continuous outer diameter without upsets, and said bore adapted for passage of wireline tools,
one or more longitudinally flexible gas lift valves positioned in the coiled tubing and having a bore therein for passage of wireline tools,
a longitudinally flexible packer positioned in the coiled tubing and having a bore therein for passage of wireline tools,
a longitudinally flexible landing nipple positioned in the coiled tubing and having a bore therein for the passage of wireline tools,
a pump out plug connected to the coiled tubing, said plug having a bore therein for passage of wireline tools, and
said gas lift valves, flexible packer, landing nipple, and pump out plug, each having an outside diameter continuous with the outside diameter of the coiled tubing.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 08/146,344Filed 1 Nov 1993
Granted: 2 May 1995
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

E21B 33/12
In the borehole: packers; Plugs
E21B 17/20
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings: flexible or articulated drilling…
E21B 19/22
Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables: handling reeled…
E21B 23/02
Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells: for locking the tools or the…