SYSTEM AND METHOD FOR INVESTIGATING SUB-SURFACE FEATURES OF A ROCK FORMATION
摘要
A method and system for investigating rock formations outside a borehole are provided. The method includes generating a first acoustic wave at a first frequency by a first acoustic source; and generating a second acoustic wave at a second frequency by a second acoustic source. The first and the second acoustic sources are arranged within a localized area of the borehole. The first and the second acoustic waves intersect in an intersection volume outside the borehole. The method further includes receiving a third acoustic wave at a third frequency, the third shear acoustic wave returning to the borehole due to a non-linear mixing process in a non-linear mixing zone within the intersection volume at a receiver arranged in the borehole. The third frequency is equal to a difference between the first frequency and the second frequency.
申请公布号
CA2817532(A1)
申请公布日期
2012.05.18
申请号
CA20112817532
申请日期
2011.11.09
申请人
CHEVRON U.S.A. INC.;LOS ALAMOS NATIONAL SECURITY LLC
发明人
VU, CUNG KHAC;SKELT, CHRISTOPHER H.;NIHEI, KURT T.;JOHNSON, PAUL A.;GUYER, ROBERT A.;TEN CATE, JAMES A.;LE BAS, PIERRE-YVES;LARMAT, CARENE S.