Pumpdown safety valve

Details Pumpdown safety valve Pumpdown safety valve

1976-10-20

1978-10-10

Purser, Ernest R.

Wells

Pistons, fluid driven into well

With downflow past piston

166315, 166322, E21B 4312

Patent

active

041191471

ABSTRACT:
Disclosed is a pumpdown, retrievable, subsurface, safety valve for use in a well. The valve comprises a valve section including a valve member to control flow through the well tubing and one or more force exerting sections urging the valve member to a position blocking flow. The valve section and force exerting sections are interconnected. This abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.

REFERENCES:
patent: 3312283 (1967-04-01), Yetman
patent: 3606926 (1971-09-01), Schwegman
patent: 3727693 (1973-04-01), Tausch et al.
patent: 3762471 (1973-10-01), Mott
patent: 3764176 (1973-10-01), Soulie
patent: 4036296 (1977-07-01), Mott et al.
patent: 4042024 (1977-08-01), Mott
patent: 4067387 (1978-01-01), Mott
Otis Pumpdown Completion Equipment, Technical Information System, 4/23/1976.

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