杭锦旗中部盒一段储层“四性”关系及有效储层下限  

The reservoir“four properties”relation and the lower limit of effective reservoir in He 1 Member of Xiashihezi Formation in central area of Hangjinqi,Ordos Basin,China

作　　者：李应许 赵俊兴[1] 魏千盛 王国华 李良[3] 孙志强 贾会冲[3] 赵凯莉 LI Yingxu;ZHAO Junxing;WEI Qiansheng;WANG Guohua;LI Liang;SUN Zhiqiang;JIA Huichong;ZHAO Kaili(State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China;Third Gas Production Plant of PetroChina Changqing Oilfield Company, Wushenqi 500063, China;Exploration and Development Research Institute of Sinopec North China Branch, Zhengzhou 450006, China)

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059 [2]中国石油长庆油田分公司第三采气厂,内蒙古乌审旗500063 [3]中国石化华北油气分公司勘探开发研究院,郑州450006

出　　处：《成都理工大学学报（自然科学版）》2021年第6期675-682,731,共9页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家科技重大专项(2017ZX05036-004-006)。

摘　　要：利用钻井岩心、录井、测井、试气及分析测试等资料研究鄂尔多斯盆地杭锦旗中部地区下二叠统下石盒子组第一段储层“四性”关系并确定有效下限。结果表明:盒一段储层岩性以粗-中粒岩屑砂岩、岩屑石英砂岩为主,属于低孔、低渗储层;储集空间以孔隙型为主,部分地区发育裂缝-孔隙型;储层的岩性影响物性,物性控制含气性,电性对岩性、物性和含气性的差异及变化有明显不同的反应。建立了孔隙度测井解释模型,确定了盒一段有效储层下限标准分别为:有效厚度>7 m、孔隙度>5%、渗透率>0.2×10^(-3)μm^(2)、声波时差>228μs/m、深侧向电阻率>12Ω·m、泥质含量(质量分数)<15%、含气饱和度>50%。The“four properties”relationship of reservoir in the first member of Lower Permian Xiashihezi Formation in central Hangjinqi area of Ordos Basin is studied and the effective lower limit of reservoir is determined by using drilling cores,logging,gas testing analysis and testing data.The results show that the lithology of He 1 member reservoir is mainly coarse-medium grained lithic sandstone and lithic quartz sandstone,and belongs to low porosity and low permeability reservoir,with majority pore and minor fissure-pore as the reservoir space.It shows the lithology of the reservoir affects the physical property,which controls the gas bearing property.The electrical property is obviously different to the difference and change of lithology,physical property and gas bearing property significantly.Through comprehensive study,a porosity logging interpretation model is established,and the lower limits of effective reservoir in He 1 member are determined as follows:effective thickness>7 m,porosity>5%,permeability>0.2×10^(-3)μm^(2),acoustic time difference>228μs/m,deep lateral resistivity>12Ω·m,mud content(mass fraction)<15%and gas saturation>50%.

关 键 词：鄂尔多斯盆地 杭锦旗 下石盒子组 “四性”关系 有效储层 测井解释模型 

分 类 号：TE122.24[石油与天然气工程—油气勘探]