下寺湾油田桥镇区长2段储层四性关系及有效厚度下限确定  

Determination of the fourth relation and lower limit of effective thickness of Chang 2 Member reservoir in Qiaozhen area,Xiasiwan Oilfield

作　　者：蒲阳东 贺梅梅 王乐 张鑫 王范 Pu Yangdong;He Meimei;Wang Le;Zhang Xin;Wang Fan(Yanchang Oilfield Co.,Ltd.,Xiasiwan Oil Production Plant,Yan'an 716000)

机构地区：[1]延长油田股份有限公司下寺湾采油厂,陕西延安716100

出　　处：《石化技术》2023年第5期154-156,共3页Petrochemical Industry Technology

摘　　要：下寺湾油田桥镇区长2段储层属典型的低孔、低渗的特点,利用试油资料及岩心分析测试结果对研究区长2储层进行四性关系与有效厚度下限的研究。分析认为长2段储层有效厚度下限为:岩性下限为细砂岩以上;含油性下限为油迹及以上显示;物性下限为孔隙度≥9.0%,渗透率≥0.3×10^(-3)μm^(2);电性下限为:当241.5μs/m>声波时差≥225μs/m,电阻率≥-0.76×声波时差(AC)+193.82,当声波时差≥241.5μs/m,电阻率≥11.0Ω·m。The Chang 2 member reservoir in Qiaozhen area of Xiasiwan Oilfield is characterized by typical low porosity and low permeability.Based on the oil test data and core analysis test results,the four relationships and the lower limit of effective thickness of the Chang 2 reservoir in the study area are studied.The analysis shows that the lower limit of effective thickness of Chang 2 member reservoir is above fine sandstone.The lower limit of oil content is the oil trace and above display;The lower limit of physical properties is porosity≥9.0%and permeability≥0.3×10^(-3)μm^(2).The electrical lower limit is:when 241.5μs/m>acoustic time difference≥225μs/m,resistivity≥-0.76*AC+193.82,when acoustic time difference≥241.5μs/m,resistivity≥11.0Ω·m.

关 键 词：有效厚度 四性关系 长2油层组 下寺湾油田 

分 类 号：P618.13[天文地球—矿床学]