Automatic downhole well shut-in control valve

Details Automatic downhole well shut-in control valve Automatic downhole well shut-in control valve

1991-08-30

1993-02-23

Neuder, William P.

Wells

With time or distance measuring, temperature responsive or...

166 664, 166323, E21B 3408, E21B 4900

Patent

active

051881721

ABSTRACT:
An automatic timed shut-in valve for pressure transient testing of a well and the like includes a body member adapted for connection to a locking device for locating the valve at a predetermined point in a tubing string. The valve includes a clock timer and an actuator which is operable to close the valve at a predetermined time after insertion of the valve in the tubing string. Various operations may be carried out including automatic times shut-in of a well or pressure transient testing by recording at least one of pressure and temperature in the well in timed relationship to actuation of the valve so that wellbore and formation conditions can be measured upon shut-in of the well.

REFERENCES:
patent: 2245712 (1941-06-01), Ragan
patent: 2948339 (1960-08-01), Fredd
patent: 4878053 (1989-10-01), Rorden et al.
patent: 4896722 (1990-01-01), Upchurch

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