Method of shear wave porosity logging of a subsurface formation

Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging

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67 31, 67 75, 364422, G01V 140, G01V 128

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048435988

ABSTRACT:
The porosity of a formation surrounding a cased well is determined from a shear wave log of the formation. Shear wave velocity is derived from the log and formation porosity is identified from a predetermined correlation between core-derived porosity for the type of formation traversed by the cased well and shear wave velocity.

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U.S. patent appln. S.N. 192,446, filed 5/11/88, W. L. Medlin, Mobil Docket No. 4819, incorporated herewith.

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