作　　者： ; ; ; ; ; ; ;

机构地区： 广州海洋地质调查局

出　　处： 《中国地质》 2020年第1期29-42,共14页

摘　　要： 双BSR已成为国际水合物研究的新热点,其在水合物成藏机制、分布富集规律及水合物钻采站位优选等方面有着重要意义。国际上对双BSR的研究主要集中于双BSR的识别、成因机制及其与水合物成藏关系的研究几个方面,但存在双BSR的识别方法和技术有限,双BSR形成机制不明及保存机理不清等诸多难题,尤其是将双BSR与水合物-游离气体系统一起来开展水合物动态成藏研究尚处于探索阶段。中国南海海域已发现双BSR存在的证据,然而研究程度极低且严重滞后,亟需开展双BSR识别与刻画,双BSR成因机制及影响因素分析,双BSR形成变化与水合物动态成藏关系及双BSR对多类型水合物勘探开发影响等方面的研究。阐明双BSR与水合物动态成藏关系并建立动态演化的水合物-天然气体系模式,为深入研究双BSR及水合物成因机制、分布规律及其地质历史中的演变提供重要的科学依据,亦可深化水合物成藏理论研究并推进水合物勘探开发。 The double bottom simulating reflector(DBSR),which is important for the accumulation mechanism,distribution and enrichment characteristics as well as drilling and exploitation site optimization of gas hydrates,has become a new international research hotspot.The research on the DBSR abroad mainly focuses on the recognition,formation mechanism and the relationship with the accumulation of gas hydrates;nevertheless,the mechanism of DBSR is still ambiguous.Especially,the unification of DBSR with hydrates and free gases for carrying out the study of the dynamic accumulation of gas hydrates remains at the exploratory stage.Evidence of DBSR has been found in the South China Sea,but the research on them has been very insufficient and seriously lagged.Therefore,it is an urgent need to carry out the study of the recognition and depiction,the formation mechanism and controlling factors,the developing and evolution of DBSR and their relations with the dynamic accumulation of gas hydrates,as well as the effect of DBSR on the exploration and exploitation of multiple-type gas hydrates.The investigation of the relationship between DBSR and the dynamic accumulation of gas hydrates and establishment of the dynamic evolution models of the gas hydrate-free gas system will provide important scientific basis for the intensive research on the genetic mechanism,distribution regularities and geological evolution of the DBSR and gas hydrates.The research on reservioring theories as well as exploration and development of gas hydrates can also promote and develop the research.

关 键 词： 天然气水合物 双 游离气 成藏机制 勘探开发 研究进展 油气勘查工程 南海

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