Analysis of the early performance of the M-6 steam-drive project, Venezuela

Conference · Fri Jan 01 04:00:00 EST 1982 · Soc. Pet. Eng. AIME, Pap.; (United States)

OSTI ID:6031153

Schenk, L

Since January 1978 Maraven has been conducting the M-6 Steam Drive Project in Tia Juana, one of the Bolivar Coast Heavy Oil Reservoirs near Lake Maracaibo. The project is carried out on a semi-open seven-spot well configuration, using the existing 231-m grid and comprises at present 21 injectors and 130 producers. The project area is 7.4 km/sup 2/, depth 1800 ft ss, and originally contained 525 million bbl of 13 degr. API Crude. The recovery by primary depletion, enhanced by steam soak, was 22 % STOIIP at the start of steam drive. Steam is supplied by a plant with a nominal capacity of 10,000 t/d of saturated, dry steam at 1000 psig. Lake Maracaibo water softened by ion-exchange is used as feed water and natural gas as fuel. Following a build-up period of 6 months the steam injection rate has ranged between 6000 and 8500 t/d, averaging 7400 t/d up to the end of 1981, at well head pressures of around 500 psig. The oil production increased from a pre-project level of 8000 b/d to 18,000 to 23,000 b/d since early 1980, accompanied by an increase in water production from 4000 up to 40,000 b/d. Cumulative performance data for the period January 1978 to December 1981 are: steam injected 10.2 million tons, oil produced 23.7 million bbl, extra oil produced 15.9 million bbl and water produced 33.0 million bbl. Corresponding main project parameters are: cumulative oil production 4.5% STOIIP, of which 3% STOIIP is extra, oil/steam ratio 2.3 bbl/ton, extra-oil/steam ratio 1.6 bbl/ton. (JMT)

• OSTI ID: 6031153
• Report Number(s): CONF-820419-
• Conference Information: Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
BOILERS
DEVELOPING COUNTRIES
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
LATIN AMERICA
MINERAL RESOURCES
OIL FIELDS
OIL WELLS
PETROLEUM
PETROLEUM DEPOSITS
RECOVERY
RESERVOIR ROCK
RESIDUAL PETROLEUM
RESOURCES
SOUTH AMERICA
STEAM GENERATORS
STEAM INJECTION
THERMAL RECOVERY
VAPOR GENERATORS
VENEZUELA
WELLS