Abstract

Exploratory drilling increased from 423 wells in 1980 to 696 wells in 1981; the success rate increased from 28.8% in 1980 to 32.5% in 1981. Development drilling increased from 678 wells in 1980 to 885 wells in 1981. In the Denver basin, 527 exploratory wells were drilled during 1981 with a success rate of 31.3%. In northwestern Colorado, 100 exploratory wells were drilled with a success rate of 48.0%, and in southeastern Colorado 69 exploratory wells had an 18.8% success rate. Total drilling in the area was up 44% from 1980 with 1,581 wells drilled in 1981. The overall success rate increased from 40.7% in 1980 to 59.4% in 1981.--Modified journal abstract.

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