辽河西部凹陷沙河街组泥页岩储集条件及含油性初步研究  

RESVROIR CONDITION AND OIL-BEARIRG PROPERTY OF SHAHEJIE SHALE RESERVOIR IN WESTERN SAG, LIAOHE OILFIELD RESERVOIR IN WESTERN SAG, LIAOHE OILFIELD

作　　者：韩悦[1] 宁松华[1] 

机构地区：[1]"油气资源与勘探技术"教育部重点实验室.长江大学

出　　处：《天然气勘探与开发》2015年第2期6-9,1-2,共4页Natural Gas Exploration and Development

基　　金：国家自然科学基金项目(41274141)"柱状分层固体介质中声波的传播与应用基础研究"

摘　　要：近年来辽河坳陷古近系泥页岩中多口井见到了良好的油气显示,气测异常十分活跃,显示了泥页岩良好的油气前景。根据页岩油源储一体的成藏特点,重点针对泥页岩源岩和储集性两方面内容进行了评价,在西部凹陷创新应用了泥页岩储集层评价方法、含油量确定方法。明确了西部凹陷沙四段、沙三段等发育优质烃源岩,其中沙四亚段灰质页岩热演化程度适中,生烃能力最强,页理缝发育,脆性矿物含量高,脆性指数最高达67,含油量最高达0.52%,为页岩油富油气层段。In the Palaeogene shale of Liaohe Depression, better oil and gas show appears from most wells, and abnormal gas logging is very active, all representing that the shale has a better oil and gas prospect. In this study, its source rock and reservoir property are evaluated at first according to the reservoir-forming features of oil-source-reservoir association; and then, two methods to evaluate the shale reservoir and to define the oil content have been applied to the western sag. Results show that(1)in this sag, high-quality source rocks are developed in both Shahejie 4 and Shahejie 3 members;(2)in Shahejie 4 Member dominated by calcareous shale with a moderate thermal evolution degree, the hydrocarbon-generating capacity is the best and lamellation fractures are developed; and(3) rich brittle minerals may be found in this Shahejie 4 Member, in which the maximum brittle index and oil content reach 67 and 0.52%, respectively, indicating that this member is rich in shale oil.

关 键 词：页岩油 泥页岩 优质源岩 储集层 含油量 

分 类 号：P618.13[天文地球—矿床学]