US 5,704,393 A · Coiled tubing apparatus

Abstract

The apparatus and method for injecting coiled tubing downhole includes a connector member disposed on the end of the coiled tubing and supporting a downhole tool. The connector member includes a dual check valve in the fluid passageway which allows fluid passage to actuate the packer member and closes the fluid passage after the connector member is disconnected from the packer member. The connector member may also include a valve member which allows circulation down the flow bore of the coiled tubing. The packer member includes a valve for the passage of well fluids between the packer member and coiled tubing.

Claims13

Dependent claims

A valve apparatus comprising:

a tubular member having an annular wall forming a flow bore and an external area, said wall having an aperture therethrough;
a valve with a housing having a bore therethrough;
said housing disposed within said aperture;
first and second closure members in said bore;
said first closure member allowing flow from said flow bore to said external area and preventing flow from said external area to said flow bore;
and
said second closure member having a first position allowing flow into and out of said bore and a second position preventing flow out of said bore and allowing flow into said bore.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

08/636,256Filed 23 Apr 1996 · division

Priority

2 Jun 1995

Granted

6 Jan 1998

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

E21B 17/06
Between rod or the like and bit or between rod and rod or the like: releasing-joints, e.g. safety joints
E21B 17/206
Flexible or articulated drilling pipes , e.g. flexible or articulated rods, pipes or cables: with conductors, e.g. electrical, optical
E21B 23/0411
Operated by fluid means, e.g. actuated by explosion: specially adapted for anchoring tools or the like to the borehole wall or to well tube
E21B 23/042
Operated by fluid means, e.g. actuated by explosion: using a single piston or multiple mechanically interconnected pistons

Coiled tubing apparatus

Life of this patent

Coiled tubing apparatus

Life of this patent

Abstract

Claims13