Performance analysis of a major steam drive project in the Tia Juana Field, western Venezuela
On the basis of the favorable results obtained in early laboratory and small-scale field experiments it was decided to test the steam drive process on a larger scale in one of Shell's heavy-oil reservoirs on the E. coast of Lake Maracaibo. The project consists of 7 seven-spots, comprising 24 production and 7 twin injection wells at 133 m spacing. The latter wells are completed separately on the 2 main sand groups, so as to improve control of the vertical steam distribution. Steam injection commenced in Sept. 1961 and at end 1966, 10.3 million bbl or 21% of the oil initially in place (50 million bbl) had been produced for injection of 2.66 million (metric) tons of steam, corresponding with a cumulative oil/steam ratio of 3.9 bbl/ton. This brings the total recovery from the test area to 32% of oil in place, compared with an estimated ultimate primary recovery of 17%. The production rate at end 1966 was still 5,000 bpd at a steam injection rate of 1,450 tons per day.
- OSTI ID:
- 6382673
- Country of Publication:
- United States
- Language:
- English
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Performance analysis of a major steam drive project in the Tia Juana field western Venezuela
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Related Subjects
020300* -- Petroleum-- Drilling & Production
DEVELOPING COUNTRIES
ENHANCED RECOVERY
FLUID INJECTION
FLUID INJECTION PROCESSES
INJECTION WELLS
LATIN AMERICA
OIL WELLS
PRODUCTION
RECOVERY
SOUTH AMERICA
STEAM INJECTION
STEAM SOAK PROCESSES
TESTING
THERMAL RECOVERY
VENEZUELA
WELL SPACING
WELLS