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The AAPG/Datapages Combined Publications Database

AAPG Bulletin


Volume: 65 (1981)

Issue: 5. (May)

First Page: 937

Last Page: 937

Title: Geology of Hibernia Discovery: ABSTRACT

Author(s): G. G. L. Henderson, K. R. Arthur, D. W. Kushnir

Article Type: Meeting abstract


Chevron discovered the Hibernia oil field in 1979 by drilling the Chevron et al Hibernia P-15 well, on the Grand Banks, 195 mi (314 km) east of St. John's, Newfoundland. Delineation drilling, completed during 1980 and the early part of 1981, has confirmed the presence of a giant oil field which, in all probability, will contain recoverable reserves in excess of one billion bbl.

The oil field is located near the western edge of the Jeanne d'Arc subbasin, a southwestern extension of the much larger East Newfoundland basin. These depocenters developed as a consequence of Mesozoic extensional rift tectonics and contain up to 40,000 ft (12,192 m) of Mesozoic and Cenozoic sediments.

The Hibernia structure is a large north-northeast trending rollover anticline, bounded on the west by a major listric growth fault, and dissected into a number of separate blocks by transverse faults. The crest of the structure is truncated by a major middle Cretaceous unconformity.

The most potentially productive reservoirs are sandstones of Lower Cretaceous age which appear to be deltaic in origin. Porosities vary from 17% to more than 30%; permeabilities range from 200 md to 1,300 md.

The discovery and early delineation wells each have an indicated productivity in excess of 20,000 bbl per day.

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