Method and apparatus for soil mechanics measurements of filter c

Details Method and apparatus for soil mechanics measurements of filter c Method and apparatus for soil mechanics measurements of filter c

1984-03-28

1985-10-22

Levy, Stewart J.

Measuring and testing

Miscellaneous

73 614, 73151, E21B 4910

Patent

active

045480800

ABSTRACT:
An apparatus includes a main housing with a permeable cylindrical sleeve in the main housing to simulate a rock formation through which a well is drilled. A compartment is defined outside the sleeve and a solids-containing fluid is introduced into the interior of the sleeve and pressurized, so that the fluid passes through the sleeve and into the compartment, leaving a filter cake on the inside of the sleeve. A probe extends through the sleeve to simulate a drill string, and the probe can be moved toward and away from the inside surface of the sleeve. The apparatus includes a means for determining the filter cake thickness, preferably ultrasonically.

REFERENCES:
patent: 2830266 (1958-04-01), Southwick et al.
patent: 4458528 (1974-07-01), Roper et al.

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