Failure Studies on Texas Gulf Coast Geopressured-Geothermal Sandstones and Shales
- Key words
- Reservoir Engineering; USA; Texas; Brazoria; Pressure; Permeability; Fracture; Triaxial Compression; Failure; Pore Pressure; Experimental Data; Stress-Strain; Strength
- Location
- Brazoria, Texas
- Conference
- Geothermal Resources Council Transactions
- Year
- 1981
- Session
- Geopressured reservoirs; Rock mechanics
- Language
- English
Abstract
Triaxial compression tests were run at room temperature to determine failure characteristics of rocks extracted form the geopressured geothermal reservoir underlying Brazoria county. Effects of both confining and pore fluid pressure were considered. Like all other rocks, ultimate strength was found to increase with increase in effective confining pressure. Partial ductile behavior was observed at pressures above 5000 psi. In general rocks from this reservoir were found to be considerably weaker than corresponding well compacted sandstones.
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