Miller Field: A Subtle Upper Jurassic Submarine Fan Trap in the South Viking Graben, United Kingdom Sector, North Sea
N. M. McClure, A. A. Brown, 1992. "Miller Field: A Subtle Upper Jurassic Submarine Fan Trap in the South Viking Graben, United Kingdom Sector, North Sea", Giant Oil and Gas Fields of the Decade 1978-1988, Michel T. Halbouty
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The Miller field is situated at a depth of 4 km in the South Viking graben, some 270 km northeast of Aberdeen. The field was discovered in 1983 in previously relinquished U.K. license blocks 16/7b and 16/8b. The discovery can be attributed to a detailed understanding of the regional sedimentological and seismic velocity models, which predicted the presence of submarine fan sediments within a structural nose some 10 km from the graben margin sediment source.
The Miller field reservoir comprises up to 100 m of oil-bearing Upper Jurassic, Brae Formation turbidites. Core, electric log, and well test analyses show that the turbidites have excellent reservoir qualities. Porosity ranges from 12 to 23%, and net/gross ratios are typically greater than 0.75. The reservoir is highly productive, with permeability typically ranging from 50 to 1200 md.
The reservoir fluid is an undersaturated, CO2-rich, sour, 37.5° API oil sourced from the Kimmeridge Clay Formation, which overlies and interfingers with the reservoir. The oil is trapped by a subtle combination of structural and stratigraphic mechanisms.
Thirty development wells will be drilled from a single platform. A total of ten wells (five producers and five injectors) will be predrilled through a template prior to platform installation. The first of these wells was spudded in March 1989 in preparation for first oil production in early 1992. Ultimate recovery is estimated to be approximately 300 MMSTB of oil and 0.57 tcf of associated gas.
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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,