Exploratory drilling decreased 5% in 1965; discoveries decreased 23%. Twenty-three discoveries resulted from the drilling of 261 wells, a success ratio of 1:11. Increased seismograph activity and leasing in the Miocene trend offshore indicate that this trend will be drilled more extensively in the future. Wildcats decreased 37% in the Frio trend, and increased 60% in the Yegua trend.

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First page of Developments in Upper Gulf Coast of Texas in 1965<xref ref-type="fn" rid="fn1"><sup>1</sup></xref>
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