Formation testing tool and method of obtaining post-test drawdow

Details Formation testing tool and method of obtaining post-test drawdow Formation testing tool and method of obtaining post-test drawdow

1986-09-18

1988-05-24

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

166264, E21B 4908

Patent

active

047458020

ABSTRACT:
A formation tester is set forth. The device utilizes a snorkel extending from the formation tester to obtain a pressure test and collect samples from a formation of interest. The apparatus includes multiple sample storage containers. The sample line is connected to storage containers and also to pretest and post-test drawdown elements which alter the sample line back pressure, thereby cooperating with an equalizing valve to selectively isolate the snorkel from fluid and fluid pressures in the well.

REFERENCES:
patent: 3104712 (1963-09-01), Whitten
patent: 3780575 (1973-12-01), Urbanosky
patent: 3811321 (1974-05-01), Urbanosky
patent: 3952588 (1976-04-01), Whitten
patent: 4210018 (1980-07-01), Brieger
patent: 4270385 (1981-06-01), Hallmark
patent: 4416152 (1983-11-01), Wilson
patent: 4513612 (1985-04-01), Shalek

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