Method for computing borehole geometry from ultrasonic pulse ech

Details Method for computing borehole geometry from ultrasonic pulse ech Method for computing borehole geometry from ultrasonic pulse ech

1996-10-25

1998-04-07

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

367 25, 367 73, 364422, G01V 140

Patent

active

057372772

ABSTRACT:
A method for using geometrical data to determine characteristics of a wellbore penetrating a subterranean formation is disclosed. The method involves converting data obtained from acoustic well logging into cartesian coordinates and solving a general quadratic equation by a least squares fit to an elliptical or circular model. More specific information, such as tensor strain and formation compaction along the wellbore may then be obtained from the geometrical data.

REFERENCES:
patent: 5638337 (1997-06-01), Priest
Collins et al, 11th SPIE Reservoir Simulation Symp., Feb. 20, 1991, pp. 163-176; abst. only herewith.
Atlas Wireline Services Pamphlet, 1992, at 93-146, 10 pages.
LeBlanc et al, Oil Gas Journal, vol. 76, #4, pp. 69-70, Jan. 23, 1978; abst only herewith.

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