Estimates of permeability from capillary pressure measurements

Details Estimates of permeability from capillary pressure measurements Estimates of permeability from capillary pressure measurements

1978-09-20

1980-07-08

Watkins, Donald

Measuring and testing

With fluid pressure

Porosity or permeability

G01M 300

Patent

active

042111064

ABSTRACT:
A method and apparatus for determining the permeability of small rock samples by mercury capillary pressure measurements. The apparatus comprises a measuring cell having a very small volume and means for measuring the displacement of mercury in a sample placed in the cell to at least one ten thousandth of the cell volume. The method comprises plotting the capillary pressure versus saturation as a percentage of bulk volume and using a nomogram to determine permeability of the sample.

REFERENCES:
patent: 2604779 (1952-07-01), Purcell
patent: 2641924 (1953-06-01), Reichertz
patent: 2829515 (1958-04-01), Johnson
patent: 3199341 (1965-08-01), Heuer, Jr. et al.
patent: 3859843 (1975-01-01), Lowell
patent: 3882714 (1975-05-01), Libal et al.

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