Abstract

In late 1992, Mitchell Energy shot its first 3-D seismic program in the Texas Gulf Coast. The purpose was to unravel a fault pattern consisting of subtle faults — with throws of 30–100 ft — that significantly influence oil and gas production from Palacios Field in Matagorda County. The successful 3-D survey revealed a fault pattern much different from those derived from 2-D data and allowed us to reconstruct the geologic history of the entire area. Although oil and gas development in this area is very mature (the field was discovered in 1937), there are still many things to learn (even for Mitchell, which has been operating here since 1953)…and 3-D is the best teaching tool we have.

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