Tester valve

Details Tester valve Tester valve

1993-03-03

1994-08-16

Dang, Hoang C.

Wells

Valves, closures or changeable restrictors

Fluid operated

166332, 2671413, E21B 3406

Patent

active

053378261

ABSTRACT:
A reciprocating full flow tester valve is provided with a shock absorber and tolerance adjustment device for absorbing an impact between a power mandrel of the tool and an operating assembly of the tool. An improved hydraulic impedance system is also provided for providing a time delay in telescopingly collapsing movement of the tool when weight is set down on the tool to open the tester valve.

REFERENCES:
patent: 4063593 (1977-12-01), Jessup
patent: 4064937 (1977-12-01), Barrington
patent: 4185690 (1980-01-01), Kinney
patent: 4618000 (1986-10-01), Burris, II
patent: 5183113 (1993-02-01), Leaney et al.

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