Measuring and testing – Borehole or drilling – Downhole test
Patent
1990-10-22
1994-09-13
Williams, Hezron E.
Measuring and testing
Borehole or drilling
Downhole test
166250, 175 50, 73788, E21B 4900
Patent
active
053458192
ABSTRACT:
Method and apparatus for the nondestructive testing of rock samples as a function of time are disclosed. A rock sample is placed in a sample vessel which simulates in-situ wellbore conditions of pressure, temperature and fluid effects. Ultrasonic signals are transmitted through the sample and the transit time is measured. The measurements are repetitively performed and the time history of the development of strength is recorded in order to determine when the rock sample begins to weaken.
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Carson M. W.
Chevron Research and Technology Company
Dombroske George M.
Turner W. K.
Williams Hezron E.
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