Класс Месторождения: Мелкое
Тип Месторождения: Нефтегазовое
Местоположение:
Местность:
Стадия разработки: Доразведка
Год открытия: 1986
Источник информации:
Метод открытия:
Площадь: 16.49 км²
Skua field
The Skua field covers an area of approximately 4.5 square kilometers and is interpreted to have a 28 metre gas cap and a 46.5 metre oil leg (Osborne, 1990).
The Skua development consisted of three producing wells (sub-sea completions) linked to an FPSO (the Skua Venture). Oil production commenced in December 1991 and continued for a little over five years. 20.2 million barrels of oil have been produced from Skua.
In 1985, Skua-1 was drilled to test a tilted horst block within the Vulcan Sub-basin. The well was drilled within structural closure, but was plugged and abandoned with minor oil shows. (Subsequent appraisal and development drilling showed Skua-1 intersected the primary objective (Plover Formation) down-dip from the oil/water contact).
A follow up well (Skua-2) intersected the western bounding fault of the structure and did not penetrate a complete reservoir section. Oil was recovered on test from a Santonian age sand. This sand is juxtaposed against the Plover Formation reservoir across the western bounding fault of the Skua structure. The unit is thought to be draining oil across the fault from the Plover Formation but due to poor reservoir quality, the Santonian sand acts as a natural choke to flow. The well was subsequently plugged and abandoned due to poor flow rates (Osborne, 1990).
A further 8 appraisal / development wells were drilled on Skua. Seven reservoir units are recognized in the field - all are Early to Middle Jurassic, Plover Formation sands. These units sub-crop the Callovian Unconformity and are sealed by basal claystones and marls of the Bathurst Island Group.
On 30 January 1997, the Skua field was decommissioned. At that time, oil was being produced at a rate of 1,900 barrels/day. The maximum oil production rate of 15,000 barrels/day was achieved in August 1992; in 1996, the average oil production rate was 3,702 barrels/day. The Northern Territory Department of Business, Industry and Resource Development (2003) estimates there are approximately 2.5 million barrels of recoverable oil remaining in the Skua field.
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Data source: Cadman, S.J. and Temple, P.R., 2004. Bonaparte Basin, NT, WA, AC & JPDA, Australian Petroleum Accumulations Report 5, 2nd Edition, Geoscience Australia, Canberra
Следующее Месторождение: Moolalla