Geopressured-geothermal test of the EDNA Delcambre No. 1 well, Tigre Lagoon Field, Vermilion Parish, Louisiana: geology of the Tigre Lagoon Field, Planulina Basin. Final report
The geology and hydrology of the Tigre Lagoon Gas Field and the structural and depositional basin in which it occurs, as described, define a hydrodynamic system which has been in operation for millions of years. Fluid entrapment and geopressuring of the deposits has resulted in steepened geothermal gradients, accelerated maturation and thermal degradation (cracking) of fluid hydrocarbons, thermal diagenesis of certain clay minerals with release of much bound and intracrystalline water as free pore water, and a systematic fluid migration history controlled by the sand-bed aquifers in the basin, and by upward leakage at growth faults wherever fluid pressures approached or exceeded rock pressures. Observed geotemperature, geopressure, water salinity, and natural gas occurrence in the study area conform with the conceptual model developed.
- Research Organization:
- McNeese State Univ., Lake Charles, LA (USA)
- DOE Contract Number:
- EY-76-S-05-4937
- OSTI ID:
- 5304002
- Report Number(s):
- ORO-4937-T2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
GEOPRESSURED SYSTEMS
GEOLOGY
HYDROLOGY
NATURAL GAS WELLS
GEOTHERMAL GRADIENTS
HYDROCARBONS
LOUISIANA
SALINITY
SEDIMENTARY BASINS
THERMAL DEGRADATION
GEOLOGIC STRUCTURES
NORTH AMERICA
ORGANIC COMPOUNDS
SOUTHWEST REGION
TEMPERATURE GRADIENTS
USA
WELLS
Geothermal Legacy
150201* - Geology & Hydrology of Geothermal Systems- USA- (-1989)
030200 - Natural Gas- Reserves
Geology
& Exploration