Tubing head adapter and valve

Details Tubing head adapter and valve Tubing head adapter and valve

1984-01-12

1986-01-07

Novosad, Stephen J.

Wells

Above ground apparatus

With valve on cap or head

166330, 251315, 251148, E21B 3402

Patent

active

045628882

ABSTRACT:
An improved tubing head adapter contains a ball valve with special actuation provisions. The tubing head adapter is placed immediately atop a tubing spool in a standard oilwell makeup. The ball valve within the tubing head adapter provides a full positive closure of the pressure opening and yet on a full open position, allows complete workthrough of the tubing. Standard back pressure valves may be installed in a hanger nipple, housed within the tubing head adapter; the christmas tree is installed above adapter. An optional stem lock or similar theft resistant, actuation resistant locking means on the ball valve stem permits the ball valve to be secured open to the full open position on a production christmas tree. This reduces the chances of theft of the christmas tree by preventing pressure shutoff, which is necessary before any components can be removed.

REFERENCES:
patent: 4465092 (1984-08-01), Vitale
"Composite Catalog of Oil Field Equipment and Services", World Oil, vol. 5, 35th revision, 1982-1983.

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