摘要
为进一步了解南海北部神狐海域天然气水合物的成藏匹配条件,利用典型二维地震剖面,构建了该区的地质模型,并对其进行了天然气水合物成藏动力学的模拟。研究结果表明:神狐海域具备天然气水合物成藏的温度、压力条件;生物气和热解气的资源潜力巨大,满足水合物形成的气源条件;运移条件优越,有利于天然气水合物的聚集成藏。并提出了该区天然气水合物的成藏模式。
The north slope of the South China Sea is structurally characterized by a passive continental margin and has various Cenozoic oil-and gas-bearing depositional basins,where hydrocarbon resources are abundant,and the geological and tectonic settings,the temperature and pressure regimes as well as the methane-generative potential of thick organic-rich sediments are all favorable for the formation of gas hydrate.As a result,this region is also an ideal area for studying gas hydrate accumulations.In order to understand natural conditions of the gas hydrate formation,based on the typical 2-dimensional seismic image of the Shenhu area,a geological model of gas hydrate reservoirs was established and a dynamic simulation of gas hydrate accumulations was carried out as well.The results indicated that the temperature and pressure of the Shenhu area are appropriate for gas hydrate accumulations,source rocks there have a huge gas-generative potential and hydrocarbon migration conditions are favorable,providing an abundant gas source and good pathways for the gas hydrate formation.A forecasting model of the gas hydrate formation was given based on basin analysis,indicating that the Shenhu area is a better prospect area of gas hydrate because of its huge potential of gas hydrate resources.
出处
《石油学报》
EI
CAS
CSCD
北大核心
2011年第2期226-233,共8页
Acta Petrolei Sinica
基金
国土资源部公益性行业科研专项(200811014)"天然气水合物成藏的控制因素研究"
国家自然科学基金项目(No.40930845)"南海北部深水盆地油气渗漏系统与天然气水合物富集机制研究"
国家重点基础研究发展规划(973)项目(2009CB219501)"南海北部天然气水合物成藏的气源条件研究"联合资助
关键词
南海
神狐海域
天然气水合物
成藏模式
生物气
热解气
South China Sea
Shenhu area
gas hydrate
reservoir forming model
biogas
thermogenic gas
