Method of shear wave velocity estimation

Details Method of shear wave velocity estimation Method of shear wave velocity estimation

1992-12-16

1993-11-23

Envall, Jr., Roy N.

Boots, shoes, and leggings

367 75, G01V 100

Patent

active

052650162

ABSTRACT:
A method is disclosed for obtaining an estimate of the shear velocity in a formation material. Utilizing compressional velocity (V.sub.p) and density (.rho.) of the formation material, formation aggregate mineral parameters and formation pore fluid parameters together with a relationship that the frame bulk modulus/frame shear modulus is approximately equal to the bulk modulus of the aggregate mineral grains/shear modulus of the aggregate mineral grains, to obtain an estimate of the shear wave velocity (V.sub.s) of the formation material. The present invention is primarily designed for use in the areas where shear wave velocity (V.sub.s) measurements are unobtainable due to unconsolidated formations, and specifically, wherein the acoustic velocity of formation fluids and/or wellbore fluids is greater than the desired shear wave velocity.

REFERENCES:
patent: 4858200 (1989-08-01), Goins
patent: 4858201 (1989-08-01), Goins et al.
patent: 4881209 (1989-11-01), Bloomquist et al.

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