Method and apparatus for determining formation pressure

Details Method and apparatus for determining formation pressure Method and apparatus for determining formation pressure

1984-03-30

1986-02-18

Birmiel, Howard A.

Measuring and testing

Borehole or drilling

Downhole test

175 48, E21B 4706, E21B 4900

Patent

active

045704805

ABSTRACT:
Method and apparatus are provided for determining the formation pressure. The magnitude of formation pressure may be derived as a function of changes in bottomhole pressure following swabbing the borehole to draw formation fluids into the borehole, monitoring the borehole for influx of formation fluids, determining the reduced pressure due to swabbing, repeating the swabbing and monitoring steps until an influx of formation fluids is detected thereby determining the pressure of the formation.

REFERENCES:
patent: 3525258 (1970-08-01), Fowler et al.
patent: 3690167 (1972-09-01), Chase, Jr. et al.
patent: 3809170 (1974-05-01), Ilfrey et al.
patent: 3968844 (1976-07-01), Walther, Jr. et al.
patent: 4372380 (1983-02-01), Smith et al.
patent: 4442895 (1984-04-01), Lagus et al.

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