Project Profile

Location: Persian Gulf
Area: 9,700 square kilometres
Estimated gas in place: 1,800,000×109 cu ft
Recoverable gas: 1,260,000×109 cu ft
Producing formations: Kangan (Triassic), Upper Dalan (Permian)
Discovery: 1971
Production start-up: 1989

The North Dome field is a natural-gas condensate field located in the Persian Gulf. It is by far the world's largest natural gas field. Iran and Qatar share ownership of the field. The field holds an estimated 1,800 trillion cubic feet (51 trillion cubic metres) of in-situ natural gas and some 50 billion barrels (7.9 billion cubic metres) of natural gas condensates. The field recoverable gas reserve is equivalent to some 215 billion barrels (34.2 billion cubic metres) of oil and it also holds about 16 billion barrels (2.5 billion cubic metres) of recoverable condensate corresponding of about 230 billion barrels (37 billion cubic metres) of oil equivalent recoverable hydrocarbons. This gas field covers an area of 9,700 square kilometres, of which 3,700 square kilometres is in Iranian territorial waters and 6,000 square kilometres is in Qatari territorial waters. The field consists of two independent gas-bearing formations, Kangan (Triassic) and Upper Dalan (Permian). Each formation is divided into two different reservoir layers, separated by impermeable barriers. The field consists of four independent reservoir layers K1, K2, K3, and K4.

The field is a part of the N-trending Qatar Arch structural feature that is bounded by the Zagros fold and thrust belt to the north and northeast. In the field, gas accumulation is mostly limited to the Permian–Triassic stratigraphic units. These units known as the Kangan–Dalan Formations constitute very extensive natural gas reservoirs in the field and Persian Gulf area, which composed of carbonate–evaporite series also known as the Khuff Formation. Permian–Early Triassic has been divided into Faraghan (Early Permian), Dalan (Late Permian) and Kangan (Early Triassic) Formations.

Operators:

Qatar Petroleum

SPGC

Contractor:

Chiyoda Corporation: FEED contract