摘要
Based on characteristics and trap types of gas reservoirs in large and medium gas fields in China, 4 gas reservoir models have been established; (i)structural trap gas reservoir model I , formed earlier than or simultaneously with generating of gases; (ii) structural trap gas reservoir model II , formed later than generating of gases; ( iii )fossil weathered residuum gas reservoir model; and (iv) mud diapir abnormal temperature and pressure gas reservoir model. Distribution patterns of large-medium gas fields are described with the concept of "sealed compartment". It is concluded that the inner-compartment area, marginal area of the compartment and the areas between two overlapped sealed compartments are the most favourable areas for discovering large-medium gas fields.
Based on characteristics and trap types of gas reservoirs in large and medium gas fields in China, 4 gas reservoir models have been established; (i)structural trap gas reservoir model I , formed earlier than or simultaneously with generating of gases; (ii) structural trap gas reservoir model II , formed later than generating of gases; ( iii )fossil weathered residuum gas reservoir model; and (iv) mud diapir abnormal temperature and pressure gas reservoir model. Distribution patterns of large-medium gas fields are described with the concept of 'sealed compartment'. It is concluded that the inner-compartment area, marginal area of the compartment and the areas between two overlapped sealed compartments are the most favourable areas for discovering large-medium gas fields.
基金
Project supported by the"85-102" Chinese National Key Science and Technology Project
