Method for determining rock mechanical properties using electric

Details Method for determining rock mechanical properties using electric Method for determining rock mechanical properties using electric

1992-07-31

1995-05-16

Hayes, Gail O.

Boots, shoes, and leggings

364420, 364421, G06F 1548, G06F 1550

Patent

active

054166977

ABSTRACT:
A method for determining rock mechanical properties and for selecting a drill bit is disclosed. A set of electrical log data parameters over a selected zone in a wellbore is provided, and the respective shale and non-shale volumes are determined. A fluid-corrected Poisson's ratio for the non-shale volume is determined. Shear wave velocity for the shale volume is then determined and a corrected Poisson's ratio, relating to shale volume and fluid composition is determined. Uniaxial compressive strength, angle of internal friction, and cohesive shear strength can be determined, and drill bits selection can therefore be made more accurately.

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