东濮凹陷沙三上盐间段湖相页岩油气成藏条件  

Hydrocarbon accumulation conditions in the lacustrine shale between salts in upper Es_3 of Dongpu depression

作　　者：吴鲜 窦莲 龙胜祥[2] 武晓玲[2] 秦启荣[3] 

机构地区：[1]中石化西北油田分公司,新疆乌鲁木齐830011 [2]中石化石油勘探开发研究院,北京100083 [3]西南石油大学,四川成都610500

出　　处：《特种油气藏》2013年第4期36-40,152,共5页Special Oil & Gas Reservoirs

基　　金：全国油气资源战略选区调查与评价国家专项"渤海湾盆地及外围页岩气资源调查评价与选区"(2009GYXQ15-07-03)

摘　　要：东濮凹陷沙三上盐间段发育1套暗色湖相泥页岩,在近年已获得低产页岩油气。为研究湖相页岩油气成藏条件,通过岩心观察、地质实验与测井、录井、钻井资料相结合,对泥页岩发育特征、有机地化特征、吸附气含量、储集性、保存条件进行了综合分析。研究表明,沙三上盐间泥页岩分布广、厚度大、埋深适宜、有机质丰度高、热演化程度适宜、物性差、脆性矿物含量高、比表面积大、微孔隙发育程度高、吸附气含量较高,保存条件优越,生、储、盖组合良好,具有很好的页岩油气成藏条件和勘探开发潜力。A series of dark lacustrine shales had developed between salts in upper Es 3 of Dongpu depression,from where low yield has been produced in recent years.In order to study the conditions of hydrocarbon accumulation in lacustrine shale,comprehensive analysis has been carried out in terms of development characteristics,organic geochemistry,adsorbed gas content,reservoir quality and preservation conditions based on core observations,geological experiments,well logging,mud logging and drilling data.The study shows that the shales in the study area are characterized by wide spreading,thick,suitable burial depth,high abundance of organic matter,proper thermal evolution degree,poor physical property,high content of fragile mineral,large specific surface area,supermature micropores,high content of adsorbed gas,advantageous preservation conditions,and preferable source-reservoir-caprock association,all indicating good conditions of shale oil and gas accumulation and the potential of exploration and development.

关 键 词：页岩油气 湖相泥页岩 成藏条件 储集性 有机质丰度 东濮凹陷 

分 类 号：TE122[石油与天然气工程—油气勘探]