Wells – Processes – Cyclic injection then production of a single well
Patent
1986-05-22
1987-08-18
Suchfield, George A.
Wells
Processes
Cyclic injection then production of a single well
166266, 166271, 166272, E21B 4317, E21B 4324, E21B 4340
Patent
active
046870580
ABSTRACT:
The addition of vaporized solvent to injected steam in a fracture-assisted steamflood process provides surprisingly significant enhancement of the process as compared to both the basic fracture-assisted steamflood process of the Britton et al. U.S. Pat. No. 4,265,310 patent and to a conventional matrix drive type steamflood process utilizing solvent. Much lower solvent losses to the formation are observed than are generally provided by conventinal matrix drive type steamflood processes utilizing solvent. Dramatically different effects of the addition of heat-scavenging water follow-up after the steam injection phase are observed as compared to a conventional process utilizing solvent. Directly opposite effects are observed from changes in solvent composition as compared to conventional matrix drive type steamflood processes utilizing steam; for the present invention SOR is decreased by going to lighter solvents, whereas with a conventional process, lighter solvents increase the SOR. Furthermore, the solvent enhanced fracture-assisted steamflood process provides significantly lower overall SOR and significantly higher percentages of recovery of original oil in place, as compared to a conventional steamflood process utilizing solvent.
REFERENCES:
patent: 2288857 (1942-07-01), Subkow
patent: 2862558 (1958-12-01), Dixon
patent: 2897894 (1959-08-01), Draper et al.
patent: 2969226 (1961-01-01), Huntington
patent: 3221813 (1965-12-01), Closmann et al.
patent: 3280909 (1966-10-01), Closmann et al.
patent: 3342258 (1967-09-01), Prats
patent: 3400762 (1968-09-01), Peacock et al.
patent: 3455383 (1969-07-01), Prats et al.
patent: 3513914 (1970-05-01), Vogel
patent: 3637018 (1972-01-01), Kelly et al.
patent: 3800873 (1974-04-01), Kelly et al.
patent: 3908762 (1975-09-01), Redford
patent: 3997004 (1976-12-01), Wu
patent: 4068716 (1978-01-01), Allen
patent: 4119149 (1978-10-01), Wu et al.
patent: 4127170 (1978-11-01), Redford
patent: 4166503 (1979-09-01), Hall et al.
patent: 4207945 (1980-06-01), Hall et al.
patent: 4265310 (1981-05-01), Britton et al.
patent: 4271905 (1981-06-01), Redford et al.
patent: 4324291 (1982-04-01), Wong et al.
patent: 4418752 (1983-12-01), Boyer et al.
patent: 4429744 (1984-02-01), Cook
patent: 4429745 (1984-02-01), Cook
patent: 4456066 (1984-06-01), Shu
patent: 4461350 (1984-07-01), Hunt, III
patent: 4484630 (1984-11-01), Chung
patent: 4487264 (1984-12-01), Hyne et al.
patent: 4503910 (1985-03-01), Shu
patent: 4503911 (1985-03-01), Hartman et al.
patent: 4558740 (1985-12-01), Yellig, Jr.
"The Saner Ranch Pilot Test of Fracture-Assisted Steamflood Technology", by Stang et al., presented at the 59th Annual Technical Conference and Exhibition held at Houston, Tx., on Sep. 16-19, 1984.
Journal of Petroleum Technology, Mar. 1983, pp. 511-522, "The Street Ranch Pilot Test of Fracture-Assisted Steamflood Technology", Britton et al.
Petroleum Society of CIM Paper No. 85-36-4, "Simulation of the Saner Ranch Fracture-Assisted Steamflood Pilot", by Soni et al., presented at the 36th Annual Technical Meeting of Petroleum Society of CIM, Jun. 2-5, 1985.
Paper No. SPE 14223 of Shu et al., "Effect of Solvent on Steam Recovery of Heavy Oil", presented at the 60th Annual Technical Conference and Exhibition of the Society of Petroleum Engineers, Las Vegas, Nev., Sep. 22-25, 1985.
Paper No. SPE 13035, "Commercial Application of Steamflooding in an Oil Field Comprised of Multiple Thin-Sand Reservoirs", by Powers et al.
Casad Burton M.
Jurinak Jeff J.
Soni Yogendra
Conoco Inc.
Reinert A. Joe
Suchfield George A.
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