Abstract: Gas Production from Tight Sandstones of Permo-Pennsylvanian Age, Val Verde Basin, Texas

By

Clayton S. Valder, Jr.

During the past five years more than 1900 wells have been drilled in a tight quartz sandstone of Permo-Pennsylvanian age in the Val Verde Basin of Texas. This active play encompasses parts of Sutton, Schleicher, Crockett, Edwards, Val Verde, and Terrell counties. These wells have already proven the existence of major gas reserves which have the potential to develop into the "giant" category, given a favorable economic climate. This is a somewhat unique play in that the exploration wildcat success has averaged about 50%, with development well success averaging around 80%.

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