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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Lithologic and Stratigraphic Controls
on Reservoir Quality and Target
Selection for Horizontal Drilling
in the Austin Chalk Trend
By
Union Pacific Resources, Fort Worth
More than 4,000 horizontal wells have been drilled in the prolific
Austin Chalk play which now stretches from southwest Texas to
eastern Louisiana, at depths between 7,000' and 15,000' (2,250-
4,840 m). Although initial production rates can exceed 1,000 barrels
of oil 
per
day with cumulative production of 1 million barrels
of oil, 30-40% of all horizontal wells produce less than 150,000
barrels and are not economically viable. Economic success in this
play hinges on choosing and staying in the correct target horizon.
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