Boots – shoes – and leggings
Patent
1989-12-20
1991-12-10
Shaw, Dale M.
Boots, shoes, and leggings
364421, 376209, 166272, 166292, 1661175, G01V 100, E21B 4324, E21B 3313
Patent
active
050723871
ABSTRACT:
An improved method for deteriming the transit time of a radioactive tracer for steam injection profiles in steam injection wells is disclosed. Radiation decay data is collected at two detectors at different depths. The data is then transformed into a new data set, consisting of time intervals between successive decay events. Tracer radiation decay events are distinguished from background radiation decay events by using statistical methods to establish a high probability that background radiation decay events are excluded. The total set of time intervals are then divided into subgroups of a specified sample size. The arrival time of the tracer is determined as the first time at which a specified minimum number of identified tracer radiation decay events occur successively.
REFERENCES:
patent: 3993131 (1976-11-01), Riedel
patent: 4168746 (1979-09-01), Sheely
patent: 4223727 (1980-09-01), Sustek, Jr. et al.
patent: 4224988 (1980-09-01), Gibson et al.
patent: 4228855 (1980-10-01), Sustek, Jr. et al.
patent: 4470462 (1984-09-01), Hutchison
patent: 4487264 (1984-12-01), Hyne et al.
patent: 4501329 (1985-02-01), DePriester
patent: 4507552 (1985-03-01), Roesner et al.
patent: 4730263 (1988-03-01), Mathis
patent: 4763734 (1988-08-01), Dickinson et al.
patent: 4793414 (1988-12-01), Nguyen et al.
patent: 4817713 (1989-04-01), Nguyen et al.
D. E. Bookout, J. J. Glenn, Jr. and H. E. Schaller, "Injection Profiles During Steam Injection", American Petroleum Institute; Production Division; Pacific Coast District Meeting, May 2-4, 1967, Paper No. 801-43C.
Cire Frank L.
Griston Suzanne
Carson Matt W.
Chevron Research and Technology Company
Chung Xuong M.
Keeling Edward J.
Shaw Dale M.
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