Method of measuring fracture pressure in underground formations
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United States of America Patent
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-
Jun 12, 1984
Grant Date -
N/A
app pub date -
Sep 7, 1982
filing date -
Sep 7, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is disclosed for accurately measuring breakdown or fracture pressure by placing a variable volume device in immediate communication with a test interval formed in a borehole extending through an underground formation. Expansion of the variable volume device increases pressure in the test interval to the fracture pressure of the formation. The fracture pressure may be accurately measured by monitoring pressure in the test interval, expansion of the variable volume device then preferably being terminated in order to minimize the extent of fracture within the formation.
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