Downhole measurements using very short fractures

Details Downhole measurements using very short fractures Downhole measurements using very short fractures

G - Physics

01

V

G01V 9/00 (2006.01) E21B 43/26 (2006.01) E21B 49/00 (2006.01) E21B 49/10 (2006.01)

Patent

CA 2056966

A method of performing small scale micro hydraulic fracturing in which fluid is pumped into the test interval until the initiation of a fracture is indicated, immediately after which fluid is pumped out of the interval so as to prevent propagation of the fracture and allow closure thereof, the portion then being repressurised by pumping fluid back in. By pumping out when the fracture is initiated, propagation is substantially prevented allowing estimation of the fracture length and toughness to be obtained and the time taken for the measurement reduced.

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