FORMING CONDITION OF LARGE GAS FIELD IN SOUTHERN NORTH SEA BASIN

ZHANG Feifei; YANG Jinyu; YANG Chuansheng

2011 Vol. 27, No. 12

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ZHANG Feifei, YANG Jinyu, YANG Chuansheng. FORMING CONDITION OF LARGE GAS FIELD IN SOUTHERN NORTH SEA BASIN[J]. Marine Geology Frontiers, 2011, 27(12): 27-33.

Citation:

ZHANG Feifei, YANG Jinyu, YANG Chuansheng. FORMING CONDITION OF LARGE GAS FIELD IN SOUTHERN NORTH SEA BASIN[J]. Marine Geology Frontiers, 2011, 27(12): 27-33.

FORMING CONDITION OF LARGE GAS FIELD IN SOUTHERN NORTH SEA BASIN

Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China;Qingdao Institute of Marin Geology, Qingdao 266071, China

Received Date: 01 November 2011

Abstract

Abstract

A comprehensive review of the data on gas source rock, source-reservoir-cap assemblage and trap characteristics, the formation condition of large gas field in Southern North Sea Basin was made in this paper in order to understand the basic mechanisms of oil accumulation. In this area, the Westphalia coal measures of the Late Carboniferous is the major gas source rock, with the Rotliegende sandstone as the main reservoir. The Lower Triassic sandstone is also a reservoir in some areas. The Upper Permian evaporite deposits provide a unique regional cap. Most large gas fields are preserved fractured structural traps. The formation of gas field depends upon the combination of the availability of Carboniferous gas source rock, distribution of Rotliegende sandstone and the effective sealing by regional evaporite cap rock.
- large gas field /
- formation condition /
- southern North Sea Basin