Method for making and using measurements of the chemical...

Details Method for making and using measurements of the chemical... Method for making and using measurements of the chemical...

E - Fixed Constructions

21

B

150/17, 166/2

E21B 49/00 (2006.01)

Patent

CA 1171769

A B S T R A C T A METHOD FOR MAKING AND USING MEASUREMENTS OF THE CHEMICAL SWELLING EFFECT OF A FLUID ON A SHALE Abstract of the Disclosure The drilling or treating of subterranean shale-containing earth formations is improved by adjusting the composition of the fluid used to reduce the positive shale swelling strain it causes when a shale sample is first equilibrated with fluid under conditions simulating those in the earth formation and the equilibrating fluid is replaced by the fluid being tested without otherwise significantly altering the conditions of the equilibration.

393697

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