Apparatus and method for measuring the characteristics of an oilfield fluid or the like
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United States of America Patent
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Jan 21, 2003
Grant Date -
N/A
app pub date -
Jul 27, 2001
filing date -
Nov 12, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of determining the shear threshold of a drilling mud consists in placing a detecting head with a spherical surface near to a porous wall, in pouring the drilling mud around the detecting head, in forcing the mud to pass through the porous surface so as to form a mud cake above the porous surface and around the detecting head which has a diameter D, and in measuring both the time required for the mud cake to reach a measurable or pre-determined height, and also the torque opposing rotation of the detecting head corresponding to that height.
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