Use of well logs to characterize fluid flow in the Maljamar CO/sub 2/ Pilot
The Maljamar CO/sub 2/ Pilot in Lea County, New Mexico, is a 5-acre inverted five spot. Two zones are being flooded. They are a Grayburg dolomitic sand at 3,700 feet and a San Andres dolomite at 4,050 feet. Two logging observation wells, completed with fiberglass casing through the section of interest, are located in line with the center injector and one of the corner producers. Nine months of freshwater injection in the center well was followed by nine months of brine. A series of induction logs monitored the passing of the fresh water/brine interface providing data for a preliminary characterization of flow in the zones. The brine also established a uniform salinity at the observation wells for saturation determination. Gamma emitting tracers were injected into each zone of the center well as part of a well-to-well tracer study. Frequent gamma ray logs were run in the observation wells to see whether the movement of the tracers could be detected and used to characterize water movement. The results were very encouraging and provided better vertical and time resolution than the induction logs. The numerous responding layers in each zone could be classified by tracer arrival times into only a few basic types. Injection of CO/sub 2/ and follow-up brine has been monitored with a series of induction and neutron logs to follow the changes in water and CO/sub 2/ saturation as the flood progressed.
- Research Organization:
- Conocco Inc.
- OSTI ID:
- 6276789
- Report Number(s):
- CONF-8409104-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. SPE13142; Conference: 59. annual Society of Petroleum Engineers of AIME technical conference, Houston, TX, USA, 16 Sep 1984
- Country of Publication:
- United States
- Language:
- English
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03 NATURAL GAS
NATURAL GAS WELLS
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WELL LOGGING
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DOLOMITE
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FLUID MECHANICS
GAMMA LOGGING
INDUCTION LOGGING
LIQUID FLOW
MONITORING
NEUTRON LOGGING
PILOT PLANTS
RESERVOIR ROCK
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CALCIUM CARBONATES
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FEDERAL REGION VI
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FUNCTIONAL MODELS
MAGNESIUM CARBONATES
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MISCIBLE-PHASE DISPLACEMENT
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OXYGEN COMPOUNDS
RADIOACTIVITY LOGGING
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