苏里格气田苏6区块储层隔夹层发育特征研究  

Study on the development characteristics of the interlayer of Su6 block in Sulige gas field

作　　者：施朝晖 张金亮 李淼[1] 龚铭泽 SHI Zhaohui;ZHANG Jinliang;LI Miao;GONG Mingze(College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao,Shangdong 266590,China;College of Resources Science&Technology,Beijing Normal University,Beijing 100875,China)

机构地区：[1]山东科技大学地球科学与工程学院,山东青岛266590 [2]北京师范大学资源学院,北京100875

出　　处：《中国科技论文》2019年第9期943-950,共8页China Sciencepaper

基　　金：国家自然科学基金资助项目(51674156)

摘　　要：隔夹层是揭示储层非均质性不可缺少的研究内容,是影响储层非均质性强弱的重要因素。以鄂尔多斯盆地苏里格气田苏6区块下石盒子组盒8下亚段为例,在岩心观察的基础上,结合测井资料,分析了隔夹层的岩电特征,建立了隔夹层类型测井划分标准;以定量分析为基础,对隔夹层的空间分布特征进行了细致的分析;利用部分非均质性参数,分析了隔夹层与层内非均质性的关系;结合砂厚和沉积微相的平面分布特征,总结了隔夹层的成因特征。研究结果表明:该区隔夹层类型以泥质隔夹层为主,钙质和物性隔夹层的出现频率极少;隔夹层平面上连片性较好,垂向上呈叠置现象;隔夹层发育程度和层内非均质性呈正相关关系;砂厚值较大的心坝及沙坪地区隔夹层的厚度和密度均较大,而泛滥平原地区相反,表明受沉积作用控制影响较大。该结果为研究区隔夹层精细刻画奠定了基础,对储层非均质性评价和剩余气开发工作具有一定的借鉴意义。As an indispensable research content to reveal reservoir heterogeneity,interlayer is an important factor that affects the strength of reservoir heterogeneity.In this paper,it takes the lower part of the He8 member of Shihezi formation in Su6 block of Sulige gas field in Ordos basin as an example.It analyzes the electrical characteristics of rock of interlayer on the basis of the observation of the rock core and the combination of the well logging data,which thus establishes the well logging classification standard of interlayer type.According to the quantitative analysis,it analyzes the spatial distribution characteristics of the interlayer.On the basis of the partial non-homogeneous parameters,it analyzes the relationship between the interlayer and the inhomogeneity of the layer.At the same time,it summarizes the genetic characteristics of interlayer by combing with the plane distribution characteristics of sand thickness and sedimentary microfacies.As for the results of the study,it shows that the interlayer type of the zone is dominated by the argillaceous interlayer.However,the occurrence frequency of the interlayer of the calcium and the physical property is very low.It shows vertical superposition phenomenon and has good connection on the plane of the interlayer.In addition,there is a positive correlation between the degree of interlayer development and intra-layer heterogeneity.The thickness and density of the interlayer in the core dam and sand plain area are larger,while the flood plain area is on the contrary,which shows it is greatly influenced by sedimentation.As a result,it can be seen that this result lays a foundation for fine characterization of interlayer in the study area,which has a certain reference significance for evaluation of reservoir heterogeneity and development of residual gas.

关 键 词：隔夹层 非均质性 空间分布 成因 盒8下亚段 苏6加密区 苏里格气田 

分 类 号：TE122[石油与天然气工程—油气勘探]