Apparatus and method for cleaning out sand from an...

Details Apparatus and method for cleaning out sand from an... Apparatus and method for cleaning out sand from an...

2007-11-27

2007-11-27

Bagnell, David (Department: 3672)

Wells

Above ground apparatus

Central valve or closure and lateral port

C166S319000, C175S214000, C175S218000, C285S190000

Reexamination Certificate

active

11167355

ABSTRACT:
An apparatus and method is used in the cleaning out of sand in underbalanced gas wells. The present invention includes a valve subassembly equipped with an emergency shutin device to remotely control the actuation of the valve via an air or hydraulic control line. Operatively coupled to the inlet of the valve subassembly is a swivel subassembly which further enables the coupling to a tubing string. A lifting assembly attaches the valve subassembly to an elevator of a well service rig. A hardened elbow coupled to an outlet of the valve subassembly directs the gas/sand mixture being removed from the well through a hose to a collection pit. The use of the apparatus of the present invention in a sand cleanout operation allows joints of pipe to be tripped into and out of the tubing string all the while keeping the emergency shutdown device actuator connected and operational.

REFERENCES:
patent: 2163115 (1939-06-01), Beckman
patent: 3750749 (1973-08-01), Giroux
patent: 3805894 (1974-04-01), Giroux
patent: 4425965 (1984-01-01), Bayh, III
patent: 4655302 (1987-04-01), McCreadie et al.
patent: 4749341 (1988-06-01), Bayh, III
Tubing Swivel Product Information Publication, BJ Services Company, Nov. 1, 2002.

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