Application of facies analysis to improve gas reserve growth in Fluvial Frio Reservoirs, La Gloria Field, South Texas
Conference
·
OSTI ID:6802666
Geologically based infill-drilling strategies hold great potential for extension of domestic gas resources. Traditional gas-well drilling and development have often assumed homogeneous and continuous reservoirs; uniform gas-well spacing has resulted in numerous untapped reservoirs isolated from other productive sand bodies. Strategically located infill wells drilled into these undrained reservoirs may ultimately contact an additional 20% of original gas in place in Texas gas fields. Tertiary formations in the Texas Gulf Coast commonly exhibit multiple fluvial and fluvial-deltaic reservoirs that contain vertical and horizontal permeability barriers. For example, the Frio La Gloria field (Jim Wells and Brooks Counties, Texas) contains isolated and compartmentalized reservoirs that can be related to the irregular distribution of heterogeneous facies. Net-sand and log-facies maps in areas of dense well spacing delineate relatively continuous pay defined by lenticular point-bar and channel-fill deposits 1,500-2,500 ft wide. These point-bar deposits are flanked laterally by sand-poor levee and splay facies that isolate the reservoirs into narrow, dip-elongate bands.
- OSTI ID:
- 6802666
- Report Number(s):
- CONF-880301-
- Country of Publication:
- United States
- Language:
- English
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Conference
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OSTI ID:5965199
Related Subjects
03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
CENOZOIC ERA
COASTAL REGIONS
EXPLORATION
EXPLORATORY WELLS
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGY
GEOPHYSICS
HETEROGENEOUS EFFECTS
MAPS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PERMEABILITY
PETROLEUM GEOLOGY
RESERVOIR ROCK
RESOURCES
TERTIARY PERIOD
TEXAS
USA
WELL SPACING
WELLS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
CENOZOIC ERA
COASTAL REGIONS
EXPLORATION
EXPLORATORY WELLS
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGY
GEOPHYSICS
HETEROGENEOUS EFFECTS
MAPS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PERMEABILITY
PETROLEUM GEOLOGY
RESERVOIR ROCK
RESOURCES
TERTIARY PERIOD
TEXAS
USA
WELL SPACING
WELLS