二连盆地大庙凹陷油气富集规律及有利目标优选

Qiu Wenbo,Cai Qinqin,Zhang Xuerui, Jiang Shaolong, Guo Long,Yuan Ziqi

Special Oil & Gas Reservoirs(2023)

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Abstract
针对二连盆地大庙凹陷的构造发育格局以及油气高产富集规律认识不清的难题,利用沉积相研究以及测井地震联合反演的技术手段,研究了二连盆地大庙凹陷的构造发育格局、储层发育模式以及油气高产富集规律,明确了二连盆地大庙凹陷的资源潜力和有利目标区.研究结果表明:大庙凹陷早期主要为冲积扇—扇三角洲—湖泊沉积体系,其中,冲积扇扇中的砂砾岩、远砂坝中的细砂岩及滨浅湖中的砂砾岩是良好储层发育段,半深湖—深湖泥岩是良好生油层发育段;二连盆地大庙凹陷有利油气富集区主要围绕富烃洼陷分布,并优选出二连盆地大庙凹陷阿尔善组、腾一段为有利勘探目标,预计资源量为150.44×104t,部署井位1口,预计产能可达10 t/d.研究成果对拓展二连盆地有利油气资源接替区具有重要意义.
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Key words
sedimentary facies,tectonic development,accumulation law,well deployment,Damiao Sag,Erlian Basin
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