Extensive testing in 12 wells in Texas and Louisiana has produced a significant body of production and test data from the U.S. gulf coast geopressured zones. Results indicate that these deep sediments contain some reservoir-quality sandstones capable of extended production of moderately hot brine saturated with dissolved natural gas. The best of the test wells to date, the U.S. DOE Pleasant Bayou Well 2 in Brazoria County, TX, flowed at a sustained rate of about 18,000 BID [2860 m 3 /d] for about 7 months. The reservoir may cover an area as large as 58 sq miles [150 km 2 ].None of the other 11 wells equaled the performance of the Pleasant Bayou test. From an economic standpoint, dissolved methane shows little promise of competitive performance in the foreseeable future. As a geothermal energy source, the temperatures are disappointingly low. The resource overall appears to be large but diffuse.

P/Z PLOTS FOR ABNORMALLY-PRESSUW.D RESERVOIRS . The classic A new, method of analyzing depletion drive simpie method fa -----.. preti.il.d f~r g~e rese~oirs iS to plot theaverage rese~oir eetitoating reserves and predicting the performance pressure divided by the gaa deviation factor, p !2, of abnormally-pressured (geopressured) natural gas versus the cumulative gas production, G , @/zll reaervoira. The method is applicable for reservoirs plot) . If there is no appreciable influ&ce from undergoing either depletion drive or very limited water drive.water and rock compressibility, the plot ia a Reaaons for the differences in straight line which can be extrapolated to a~R/Z of performance between normally-pressured and zero to obtain an estimate of the Initial gas in abnormally-pressured gas reservoirs are discussed.place. The straight line can also be extrapolated to a 5R/Z corresponding to abandonment conditions to

No abstract

P/Z PLOTS FOR ABNORMALLY-PRESSUW.D RESERVOIRS . The classic A new, method of analyzing depletion drive simpie method fa -----.. preti.il.d f~r g~e rese~oirs iS to plot theaverage rese~oir eetitoating reserves and predicting the performance pressure divided by the gaa deviation factor, p !2, of abnormally-pressured (geopressured) natural gas versus the cumulative gas production, G , @/zll reaervoira. The method is applicable for reservoirs plot) . If there is no appreciable influ&ce from undergoing either depletion drive or very limited water drive.water and rock compressibility, the plot ia a Reaaons for the differences in straight line which can be extrapolated to a~R/Z of performance between normally-pressured and zero to obtain an estimate of the Initial gas in abnormally-pressured gas reservoirs are discussed.place. The straight line can also be extrapolated to a 5R/Z corresponding to abandonment conditions to

No abstract