METHOD AND APPARATUS FOR ACOUSTIC SHEAR WAVE LOGGING
摘要
A borehole logging tool (13) having a dipole acoustic energy source (16) and a plurality of spaced-apart dipole acoustic energy receivers (17) is lowered into a deviated borehole (14) penetrating a subsurface formation. The dipole source (16) and receivers (17) are positioned eccentrically with respect to the borehole axis and are focused in the same direction perpendicular to the axis of the borehole tool as well as perpendicular to the direction of such eccentricity so that received tube wave amplitudes are minimized with respect to received shear wave amplitudes.
申请公布号
WO9315421(A1)
申请公布日期
1993.08.05
申请号
WO1993US00521
申请日期
1993.01.21
申请人
MOBIL OIL CORPORATION
发明人
DENNIS, CHARLES, LOUIS;LENHARDT, WILL, KARL;SCHMITT, DENIS, PHILIPPE