苏北盆地隐蔽油藏勘探实践及认识  

Exploration practice and understanding of subtle reservoir in Subei Basin

作　　者：仇永峰[1] 刘启东[1] 于雯泉[1] 李鹤永[1] 李维[1] QIU Yongfeng;LIU Qidong;YU Wenquan;LI Heyong;LI Wei(Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)

机构地区：[1]中国石化江苏油田分公司勘探开发研究院,江苏扬州225009

出　　处：《复杂油气藏》2021年第2期1-7,共7页Complex Hydrocarbon Reservoirs

基　　金：中石化科技部攻关项目“苏北盆地阜宁组岩性油藏成藏条件与目标评价”(P20060)。

摘　　要：苏北盆地隐蔽油藏勘探程度低,潜力较大。近年来通过深化高邮深凹带戴南组油源与输导条件、源-断-坡控砂机制、不同相带砂体成藏差异性研究,攻关不同相带砂体识别关键技术,取得了源外戴南组多类型岩性砂体勘探的新发现。开展选层选区选带评价,明确了阜宁组隐蔽油藏拓展勘探的重点层系和区带,建立了隐蔽圈闭成藏模式,形成了针对薄互层识别的地震相-属性-反演综合预测技术,在斜坡带构造不发育的刘陆舍和三河地区阜宁组取得了储量空白区隐蔽油藏勘探的新突破。Subtle oil reservoirs in the Subei Basin have a low degree of exploration and great potential.In recent years, through deepening studies on the oil source and the transportation conditions,the source-fault-slope controlling sand mechanism,the differences of hydrocarbon accumulation of sandbodies in different facies zones, it has been developed the key technologies for sand body identification in different facies belts. Thus, it has been made discovery of multiple types of lithological sandbodies in the Dainan Formation outside the source.According to an evaluation of layer,area, and zone selection,it was clarified the key strata and zones for the exploration of subtle reservoirs in the Funing Formation. And then it was established a subtle trap accumulation mode, and formed a seismic facies-attribute-inversion comprehensive prediction technology aimed at identifying thin interbeds. Thus,breakthroughs have been made on the exploration of subtle reservoirs in blank areas of reserves for Funing Formation in Sanhe and Liulushe areas where the slope belt structure is underdeveloped.

关 键 词：隐蔽油藏 成藏差异性 控砂机制 成藏模式 苏北盆地 

分 类 号：TE122[石油与天然气工程—油气勘探]