摘要
储层四性关系是用来进行油水层解释和评价储层的重要依据。本文在基本沉积特征认识的基础上,利用岩心分析、录井、试油等资料,研究储层四性特征。结果表明:靖边油田韩家沟区长6油层组主要为水下分流河道沉积的细砂岩,砂岩内长石含量平均为49.4%,以岩屑长石砂岩为主;储层平均孔隙度为10.2%,平均渗透率为1.10 mD,属于低孔特低渗至低孔超低渗储层;录井中岩心以油迹、油斑含油级别为主。结合岩心测试资料建立了储层参数测井解释模型,并最终确定有效储层电阻率下限为18.5Ω·m,声波时差下限为213μs/m。研究区储层的四性关系分析,对科学有效的油气藏开发提供了技术决策依据。
The relationship of four-property of reservoir research is the basis for interpretation of oil and water layer evaluation.In this paper,on the basis of understanding sedimentary characteristics,using the data of core analysis and logging,testing,etc.,we analyzed four-property relationship of Chang-6 reservoir in Hanjiagou block of Jingbian oilfield.The results showed that:Chang-6 oil-bearing formation in Hanjiagou district of Jingbian oilfield is mainly composed of fine sandstone deposited by underwater distributary channel.The average feldspar content in sandstone is 49.4%,and its mainly lithic feldspar sandstone.The average porosity of reservoir is 10.2%,average penetration is 1.10 mD,which belongs to the low-pore ultra-low permeability to low-porosity ultra-low permeability reservoir.The core of the logging is mainly oil and oil-bearing.Based on the core test data,we established reservoir parameter logging interpretation model,and the lower limit of the effective reservoir resistivity is determined to be 18.5Ω·m,and the lower limit of the acoustic wave time difference is 213μs/m.Analyze the four-property relationship of reservoirs in the study area,which provides a technical decision-making basis for the scientific and effective development of oil reservoirs.
作者
韩晓洁
夏晨丹
Han Xiaojie;Xia Chendan(Department of Geology,Northwest University,Xi'an,Shaanxi 710069,China;Exploration&Department Technology Research Center of YanchangOilfield Co.,Ltd.,Yan'an,Shaanxi 716000,China)
出处
《非常规油气》
2020年第1期15-22,共8页
Unconventional Oil & Gas
基金
陕西省“13115”科技创新工程(工程中心)“陕西省特低渗透油气田勘探与开发工程技术研究中心”(2010ZDGC-15)资助。
关键词
长6储层
四性关系
测井解释模型
Chang-6 formation
four-property relationship
log interpretation model
