Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1991-01-16
1992-04-07
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
367 35, 367 86, 181102, 175 40, 73153, G01V 140
Patent
active
051034280
ABSTRACT:
A method and apparatus for laboratory simulation of the dynamic formation of sand arches in production of oil and/or gas from unconsolidated or poorly consolidated wells is disclosed. An ultrasonic transducer is disposed opposite a perforation in a member simulating the casing of a well and the simulated well is operated at conditions approximating those of interest in the field. The acoustic transducer is moved incrementally across the perforation and measurements of the distance between the transducer and the formation are measured. These can then be used to generate a profile of the surface of the formation behind the perforation. Preferably, an ultrasonic transducer which emits a focussed beam of acoustic energy is employed.
REFERENCES:
patent: 3246290 (1966-04-01), McClure
patent: 4742496 (1988-05-01), Jennings et al.
patent: 4802145 (1989-01-01), Mount
patent: 4926942 (1990-05-01), Profrock
Cleary et al., "The Effect of . . . Unconsolidated Sands"; 54th Ann. SPB of AIME Tech. Conf., 9/26/79, 12 pp; SPA-8426.
Abou-Sayed Ibrahim S.
Chow Christopher V.
Yale David P.
Hager Jr. George W.
McKillop Alexander J.
Mobil Oil Corporation
Moskowitz Nelson
Speciale Charles J.
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