摘要
松辽盆地北部中央坳陷白垩系泉头组扶余油层发育河流—浅水三角洲环境下形成的低渗透致密砂岩储集层。在已提交的探明储量中,储集层孔隙度平均为11.8%,渗透率平均为2.30×10-3μm2,以岩性油藏为主;剩余勘探目标以赋存于孔隙度小于10%、渗透率小于1×10-3μm2储集层中的致密油为主。从烃源岩、构造、断裂和储集层4个方面阐述了扶余油层致密油成藏主控因素,认为成熟烃源岩控制了研究区致密油分布范围,构造高部位是油气运聚指向区,北西向断裂带控制油气富集,河道砂体控制致密油"甜点"区。采用类比法进行致密油资源潜力评价,初步估算扶余油层致密油资源潜力为13.09×108t,是大庆油田资源接替的重要领域。
The Fuyu Layer of Cretaceous Quantou Formation in northern Songliao Basin developed a set of low permeable tight sandstone reservoirs formed in river to shallow-water delta environments. Proven reserves in the Fuyu Layer was preserved in reservoir rocks with average porosity of 11.8% and average permeability of 2.30×10-3μm2 , lithology reservoir was the main reservoir type. The remaining exploration targets of the Fuyu Layer were tight reservoir with porosity less than 10% and permeability less than 1 ×10-3μm2. The main controlling factors of the tight oil accumulations in Fuyu Layer could be listed as follows： The mature source rocks controlled the distribution range of tight oil;the structural heights were the target about 13.09×108 t tight oil to be proved, which would provide an important resource support for Daqing Oilfield.
出处
《古地理学报》
CAS
CSCD
北大核心
2013年第5期635-644,共10页
Journal of Palaeogeography：Chinese Edition
基金
国家重大科技专项"松辽北部岩性地层油气藏富集区带
目标优选与勘探技术应用"(编号:2011ZX05001-001-04)资助
关键词
致密油
成藏主控因素
资源潜力
扶余油层
泉头组
白垩系
松辽盆地
tight oil, main controlling factors of accumulations, resource potential, Fuyu Layer,Quantou Formation, Cretaceous, Songliao Basin
