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中国近海含气盆地或凹陷都是超压的.莺歌海盆地属转换—伸展高压高温盆地,其他盆地或凹陷是由超压含气半地堑为基本单元组成的.本文论述了这两种盆地的地质特点、各种天然气藏的形成条件、寻找新气田的方向及勘探工作的建议.中国近海有待勘探的天然气领域广阔,加强地质研究工作,用超压盆地超压体控制天然气富集的规律指导勘探,将会大大提高勘探成功率.
The gas-bearing basins and sags in offshore China are both overpressured.The Yinggehai Basin is a transition-extensional high-pressure and high-temperature basin, and other basins or depressions are composed of overpressured gas-grabble half-graben.The paper discusses the two The geological features of the basin, the formation conditions of various natural gas reservoirs, the direction of finding new gas fields and the exploration work.China’s vast offshore natural gas fields to be explored in the offshore China have intensified their geological research and controlled the enrichment of natural gas by overpressure bodies in overpressured basins Regular exploration of exploration, will greatly improve the success rate of exploration.