The Reservoir Geology and Geophysics of the Hibernia Field, Offshore Newfoundland
T. J. Hurley, R.D. Kreisa, G. G. Taylor, W. R. L. Yates, 1992. "The Reservoir Geology and Geophysics of the Hibernia Field, Offshore Newfoundland", Giant Oil and Gas Fields of the Decade 1978-1988, Michel T. Halbouty
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The Hibernia field is located 315 km (195 mi) offshore and east-southeast of St. John's, Newfoundland. The field was discovered in 1979 and contains an estimated 83 million m3 (525 million bbl) of recoverable oil. Preproduction investment, which includes the construction of a concrete gravity base structure, is approximately $5 billion (Canadian). Production is scheduled to commence in 1996; the expected plateau production rate is 17,480 m3 per day (110,000 BOPD). To date, there is no hydrocarbon production from offshore eastern Canada.
Hibernia is located in the northwestern sector of the Jeanne d'Arc rift basin. The trap is a complexly faulted anticline created by rollover into the basin-bounding Murre fault. The integrated geological and geophysical interpretation of the field is based on the results of ten wells and 465 km2 (180 mi2) of three-dimensional seismic data.
Berriasian- to Valanginian-aged Hibernia sandstones are the primary reservoirs occurring at an average drill depth of 3720 m (12, 200 ft). Sedimentological interpretation of core indicates that the principal reservoirs were deposited as high-bed load distributary channels in a fluvially dominated deltaic complex. Average porosity is 16%; permeability ranges up to 10 darcys. Reservoir sands are interpreted as being elongated and relatively continuous in a southwest-northeast direction. Downdip water injection will be implemented to maximize recovery.
Barremian- to Albian-aged Ben Nevis/Avalon sandstones are the secondary reservoirs and occur at an average drill depth of 2345 m (7700 ft). Core studies indicate deposition within strand plain, transgressive shoreface, and offshore shallow marine environmerits. The extent of lateral continuity is uncertain due to a combination of thin bed stratigraphy, structural complexity, zones of bioturbation, and calcite cementation.
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The success of Memoir 14 and the worldwide interest shown for data on giant fields prompted AAPG to schedule a symposium on giant fields at the end of each subsequent decade. The 1968-78 symposium was held in Houston, Texas, April 1-4, 1979, and the papers were published in AAPG Memoir 30, December 1980.
The Stavanger Conference "Giant Oil and Gas Fields of the Decade: 1978-1988" was held in Stavanger, Norway, September 9-12, 1990, and is a continuation of the Giants of the Decade series.
Scientific studies and projections of future world energy demand indicate that although alternative-energy fuel sources must be actively pursued and developed, there also must be adequate petroleum supplies to bridge the gap. For the international petroleum industry, the years covered by this conference, 1978-88, were complex. They were years of boom and bust. The world's energy consciousness was boosted sharply by the effects of the 1979 Iranian revolution and the resulting embargo, which sent world oil prices to record heights. Global petroleum exploration soon surged, leading to the industry's all-time drilling high in 1981. Then came the oil price collapse in 1985, and the following years were characterized by falling oil prices and drastic budget cuts for exploration and development.
Although exploration dropped sharply during the latter part of the decade, there was a steady flow of giant oil and gas field discoveries. Using the giant field designation criteria of 500 million bbl of oil recoverable for fields in Asiatic Russia, North Africa, and the Middle East,