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The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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Following Chevron's discovery of the Hibernia oil field in 1979, it was realized that 3-dimensional seismic methods would be required to resolve and understand the complex pattern of listric and normal faulting which makes up the structure. A total of 5,800 line-km (3,600 line-mi) of 60-fold seismic data were collected and processed through to 3-D migration by GSI. The resulting grid of depth points are orderly spaced at 25 m (82 ft) on lines 19 km (12 mi) long and 75 m (246 ft) apart over an area of 435 km2 (168 mi2).
Although data quality is variable, the 3-D program shows much better fault delineation and structural resolution than existing 2-D coverage. Data display techniques were extremely important when interpreting this large volume of 3-D seismic data. Examples of interactive computer displays and their contributions to our understanding and mapping of the structure are shown. Results of the survey enhanced our knowledge of the structure and will continue to assist us in all stages of the development of this giant oil field.
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