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Steamflooding in a waterdrive reservoir; Upper Tulare sands, South Belridge field

Journal Article · · SPE (Society of Petroleum Engineers) Reservoir Engineering; (USA)
DOI:https://doi.org/10.2118/17453-PA· OSTI ID:6569618
 [1]
  1. Dietrich Corp., Durango, CO (US)
A steamflood project in the strong edgewater-drive Upper Tulare reservoir at South Belridge recovered about 31% of the original oil in place (OOIP) at a cumulative steam/oil ratio (SOR) of 2.7 vol/vol. Seven years of downdip steam injection depressed water influx and created an oil bank updip from the injectors. Response continued under the influence of returning aquifer water and heat scavenging after the injectors were shut down. Numerical reservoir simulation of the historical steamflood performance indicate that the high production/injection capacity (P/I) ratio induced early water encroachment and partial quenching of the growing steam zone. Restarting downdip steam injection at much higher rates after 6 years without injection is shown to recover more oil than continuing the steamflood with either a seven-spot or inverted nine-spot pattern.
OSTI ID:
6569618
Journal Information:
SPE (Society of Petroleum Engineers) Reservoir Engineering; (USA), Journal Name: SPE (Society of Petroleum Engineers) Reservoir Engineering; (USA) Journal Issue: 03 Vol. 5:3; ISSN 0885-9248; ISSN SREEE
Country of Publication:
United States
Language:
English