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伊洛瓦底盆地是缅甸重要的含油气盆地,西部深坳带是主要含油气区,始新统发育朗欣组、塔本组和尧河组三套烃源层,为钦敦凹陷、沙林凹陷和皮亚凹陷的主要供烃层系;中新统标见组为三角洲凹陷的主要供烃层;始新统塔本组、莲当组及渐新统和中新统砂岩储集体发育。下生上储垂向运移成藏和自生自储侧向运移成藏为其主要油气成藏模式。烃源条件、输导体系及油气运移方向控制了油气富集,是油气成藏的主控因素。
The Irrawaddy basin is an important oil-bearing basin in Burma. The western deep australis zone is the major hydrocarbon-bearing area. The Eocene developed three hydrocarbon source rocks, namely, the Longtan Formation, the Tarim Basin and the Yaohe Formation. These are the Qinqin Depression, Linde Sag and Piya Sag. The Miocene marker group is the main hydrocarbon-bearing layer in deltaic depression. The Eocene TSTAM, Lidang Formation and Oligocene and Miocene sandstone reservoirs are developed . The vertical migration and accumulation of subsurface reservoirs and the lateral migration and accumulation of volcanic rocks are the major hydrocarbon accumulation models. Hydrocarbon accumulation is controlled by hydrocarbon source conditions, transport systems and hydrocarbon migration direction, which are the main controlling factors for hydrocarbon accumulation.