陈家庄凸起北坡稠油地层油藏扇体侧向封堵性分析  

Analysis on lateral blockage of the fans in heavy oil stratigraphic reservoirs at north slope of Chenjiazhuang uplift

作　　者：刘军锷[1,2] 尚墨翰 董宁芳[2] 帅萍[2] 范振峰[2] 

机构地区：[1]中国地质大学(武汉)资源学院,湖北武汉430074 [2]中国石化胜利油田分公司地质科学研究院,山东东营257015 [3]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《油气地质与采收率》2014年第4期19-22,112,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"渤海湾盆地精细勘探关键技术"(2011ZX05006-003)

摘　　要：陈家庄凸起北坡沙河街组地层超覆圈闭发育,同时油源条件优越、储盖配置有利,具备形成规模地层油藏的有利条件。形成的地层油藏圈闭条件较为苛刻,其中底板条件是决定其能否形成有效圈闭的关键要素。以往针对济阳坳陷缓坡带的圈闭有效性主要考虑的是前古近系潜山的侧向封堵条件,由于潜山纵横向封堵条件变化较大,圈闭有效性预测难度较大。通过对研究区沙河街组扇体的物性、油性的差异性分析,提出缓坡带扇体自身形成的特稠油致密带(即稠油环)具有一定的侧向封堵能力,即扇体可自成圈闭,从而弱化了前古近系的底板条件的要求,拓宽了稠油地层油藏的勘探思路及阵地。并通过成藏关键要素的定量分析,明确了有利区的纵横向演化规律,拓展了勘探空间,打破了该区12 a勘探停滞不前的被动局面,并发现了2462×104t的规模储量阵地。The north slope of Chenjiazhuang uplift locates at the margin of the basin with widely distributed stratigraphic overlap traps.The oil source condition and reservoir-seal combinations are favorable for the formation of stratigraphic reservoirs.According to previous studies,the floor condition is the main factor which determines the effectiveness of stratigraphic traps in this area.By comparative analyses of petrophysical properties of the fans and oil properties,the lateral blockage ability of the heavy oil rim of the fan bodies is firstly proposed,by which the floor condition of Pretertiary is weakened and the exploration strategy of viscous crude oil stratigraphic reservoir is broaden.According to the quantitative analysis of the key elements of the reservoir,the key of exploration has been pointed out and the exploration process of viscous crude oil stratigraphic reservoir should be expected in this area.

关 键 词：地层油气藏 物性 油性 特稠油致密带 侧向封堵 陈家庄凸起 

分 类 号：TE112.322[石油与天然气工程—油气勘探]