Method for determining induced fracture azimuth in formations su

Details Method for determining induced fracture azimuth in formations su Method for determining induced fracture azimuth in formations su

1988-05-11

1990-02-06

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

367 31, 181105, G01V 140

Patent

active

048993190

ABSTRACT:
An acoustic logging tool traverses a fluid-filled cased well with an asymmetric acoustic energy transducer. Pressure waves created in the well fluid by the transducer generate asymmetric tube waves in the well casing. At least one spaced-apart transducer receives these asymmetric tube waves after they have traveled directly to the receiver through the well casing. Changes in tube wave ampltiude as detected by the receiver are used to identify the azimuth and height of any fracture interval in the formation behind the well casing.

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U.S. Patent Application Ser. No. 189,880, filed 5/3/88, W. L. Medlin, Mobil Docket No. 4763 is incorporated herewith.

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