Measuring and testing – With fluid pressure – Leakage
Patent
1992-03-30
1993-12-07
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
73 495, 73151, G01M 328
Patent
active
052674690
ABSTRACT:
A method for testing physical integrity of production tubing and production casing in a gas-lift well includes the steps of opening communication from a pressure source to an interior space of the production tubing; disposing a sealing tool in the production tubing to obtain a seal at a desired location of the production tubing; opening communication from an inner annular space of the well; applying a predetermined test pressure to the interior space of the production tubing; monitoring the test pressure applied for a pressure drop; and monitoring flow from the inner annular space. The physical integrity of the production casing is then tested by opening communication from a pressure source to the inner annular space; closing communication from the interior space of the production tubing; applying a predetermined test pressure to the inner annular space; and monitoring the test pressure for a pressure drop.
REFERENCES:
patent: 2545102 (1951-03-01), Miller
patent: 2955458 (1960-10-01), Sonnier et al.
patent: 4046006 (1977-09-01), DuFrene
patent: 4182159 (1980-01-01), Churchman
patent: 4474053 (1984-10-01), Butler
patent: 4804042 (1989-02-01), Knight et al.
patent: 5031697 (1991-07-01), Wellington et al.
Brook Michael J.
Lagoven S.A.
Williams Hezron E.
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