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页岩油气已成为中国能源新的增长领域。为了建立针对页岩油气的测井评价方法,以胜利油区罗家地区重点探井罗69井为例,系统研究了泥页岩的岩相、储集空间类型、物性、含油性及测井响应特征。研究结果表明,该类地层孔隙性越好,含油性越好。在此基础上,构建了泥页岩中钙质、石英、粘土等矿物组分含量及孔隙度、含水饱和度、总有机碳含量等评价参数的定量计算模型;进一步根据不同层段的含油气品质,将泥页岩地层划分为4类,其中Ⅰ类层含油气性最高,主要为纹层状泥质灰岩相。该测井评价方法有效地辅助了胜利油区罗家地区泥页岩水平井渤页平1、渤页平2、渤页平3井的部署,目的层良好的油气显示也进一步验证了该评价方法的实用性。
Shale oil and gas has become a new area of growth for China’s energy industry. In order to establish a logging evaluation method for shale oil and gas, a case study of Shaoyang 69 well in Luojia area of Shengli oilfield was conducted to systematically study the lithofacies, reservoir type, physical property, oil content and log response of shale feature. The results show that the better the porosity of this kind of stratum, the better the oil content. On this basis, a quantitative calculation model for the evaluation of mineral components such as calcareous, quartz and clay in shale and porosity, water saturation and total organic carbon content was established. Based on the models of oil and gas Quality, the mud shale strata are divided into four categories, of which the type Ⅰ layer has the highest oil and gas content, mainly laminar shale limestone facies. The logging evaluation method effectively aided the deployment of Bo Sha Ping 1, Bo Bo Ping 2 and Bo Bo Ping 3 wells in the shale horizontal wells in Luojia area, Shengli Oil Region. The good hydrocarbon display in the target reservoir further validates this evaluation Practicality of the method.