Downhole measurements using very short fractures

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

1991-12-04

1992-11-24

Williams, Hezron E.

Measuring and testing

Borehole or drilling

Downhole test

73784, 166250, 166308, E21B 4900, E21B 4326

Patent

active

051652765

ABSTRACT:
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 repressurized 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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patent: 5005643 (1991-04-01), Soliman et al.
patent: 5050674 (1991-09-01), Soliman et al.
Proceedings of the International Symposium on Rock Stress and Rock Stress Measurement/Stockholm/1-3 Sep. 1986, pp. 313-322.

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