Wells – Processes – Placing or shifting well part
Patent
1989-04-28
1990-11-06
Novosad, Stephen J.
Wells
Processes
Placing or shifting well part
166123, 166138, 166332, 166386, 166387, 285 86, E21B 3118, E21B 33128, E21B 33129, E21B 3412
Patent
active
049678442
ABSTRACT:
A system for installing and removing a production packer and ball valve apparatus in a well casing. The packer apparatus and valve apparatus are transported into a casing with an on/off overshot connected to a string of tubing. The packer is set by tubing manipulation independent of operation of the valve and the on/off connector and is resettable and can be disabled by a straight upward pull on the tubing string. The valve apparatus is selectively operable by rotary manipulation of the tubing string through the disengageable overshot and utilizes rotary motion to rotate a ball valve element between open and closed positions of the ball valve. In one form of the invention, the overshot is rotatably disengageable from the ball valve while the ball valve is operated by rotation of the string of pipe. The ball valve apparatus is capable of withstanding pressure in opposite directions.
REFERENCES:
patent: 3100537 (1963-08-01), Crowe
patent: 3386701 (1968-06-01), Potts
patent: 4270606 (1981-06-01), McStravick et al.
patent: 4421171 (1983-12-01), Haynes
patent: 4458751 (1984-07-01), Haynes
patent: 4576230 (1986-03-01), Tapp et al.
patent: 4610300 (1986-09-01), Mullins et al.
patent: 4715445 (1987-12-01), Smith, Jr.
patent: 4844154 (1989-07-01), Ross et al.
Brooks Robert T.
Tapp William T.
Elder Oil Tools
Novosad Stephen J.
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