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Title: Field test of two high-pressure direct-contact downhole steam generators. Volume II. Oxygen/diesel system

A field test of an oxygen/diesel fuel, direct contact steam generator has been completed. The field test, which was a part of Project DEEP STEAM and was sponsored by the US Department of Energy, involved the thermal stimulation of a well pattern in the Tar Zone of the Wilmington Oil Field. The activity was carried out in cooperation with the City of Long Beach and the Long Beach Oil Development Company. The steam generator was operated at ground level, with the steam and combustion products delivered to the reservoir through 2022 feet of calcium-silicate insulated tubing. The objectives of the test included demonstrations of safety, operational ease, reliability and lifetime; investigations of reservoir response, environmental impact, and economics; and comparison of those points with a second generator that used air rather than oxygen. The test was extensively instrumented to provide the required data. Excluding interruptions not attributable to the oxygen/diesel system, steam was injected 78% of the time. System lifetime was limited by the combustor, which required some parts replacement every 2 to 3 weeks. For the conditions of this particular test, the use of trucked-in LOX resulted in liess expense than did the production of the equivalent amount ofmore » high pressure air using on site compressors. No statistically significant production change in the eight-acre oxygen system well pattern occurred during the test, nor were any adverse effects on the reservoir character detected. Gas analyses during the field test showed very low levels of SOX (less than or equal to 1 ppM) in the generator gaseous effluent. The SOX and NOX data did not permit any conclusion to be drawn regarding reservoir scrubbing. Appreciable levels of CO (less than or equal to 5%) were measured at the generator, and in this case produced-gas analyses showed evidence of significant gas scrubbing. 64 figures, 10 tables.« less
Authors:
Publication Date:
OSTI Identifier:
6024043
Report Number(s):
SAND-83-0145/2
ON: DE83016761
DOE Contract Number:
AC04-76DP00789
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
Research Org:
Sandia National Labs., Albuquerque, NM (USA)
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; COMBUSTION PRODUCTS; ENVIRONMENTAL IMPACTS; DIESEL FUELS; OIL WELLS; STEAM INJECTION; STEAM GENERATORS; PERFORMANCE TESTING; FIELD TESTS; AIR; ECONOMICS; EXPERIMENTAL DATA; NITROGEN OXIDES; OXYGEN; SULFUR OXIDES; BOILERS; CHALCOGENIDES; DATA; ELEMENTS; ENHANCED RECOVERY; FLUID INJECTION; FLUIDS; GASES; INFORMATION; NITROGEN COMPOUNDS; NONMETALS; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PETROLEUM PRODUCTS; RECOVERY; SULFUR COMPOUNDS; TESTING; THERMAL RECOVERY; VAPOR GENERATORS; WELLS 020300* -- Petroleum-- Drilling & Production; 020900 -- Petroleum-- Environmental Aspects