Preliminary Discussion on Gas Hydrate Geological System

Abstract

Abstract:

In consideration of the discrepancy between gas hydrate theoretical prediction and its real occurrence, the inconsistent relationship between gas hydrate indicator and its existence, the irregular gas hydrate distribution law(vertically and horizontally)indicated by drilling and indirect evidence such as BSR around the world, how to strengthen studies on gas hydrate formation process and its distribution law seems practically significant in geological view. This paper attempts to bring forward the concept of gas hydrate geological system，which contains three components of gaseous hydrocarbon source subsystem, gas-bearing fluid migration sub-system and gas hydrate reservoir accumulation sub-system. In the meanwhile,some key gas hydrate geological systems are preliminarily summarized based on worldwide typical gas hydrate occurrences.

Key words: gas hydrate, geological system, gaseous hydrocarbon source sub-system, gas-bearing fluid migration sub-system, gas hydrate reservoir accumulation subsystem

CLC Number:

P744.4
TE122

LU Zhen-quan, WU Neng-you, CHEN Jian-wen,GONG Jian-ming, WU Bi-hao. Preliminary Discussion on Gas Hydrate Geological System[J]. Geoscience, 2008, 22(3): 363-375.

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