摘要
A油田P油层含钙现象比较普遍,导致孔隙结构复杂、非均质性强,使得电阻率的测井响应特征难以完全反映储层流体性质的变化,导致流体识别精度低。以岩电试验数据为基础,详细分析了钙质成份对储层电阻率的影响;以试油资料为基础,分流体性质开展了钙质含量与储层电阻率的关系研究,并求取了钙质含量与电阻率关系函数的导数,以此量化钙质含量对电阻率的影响。采用上述方法对电阻率进行钙质含量校正后,建立了电阻率与自然电位的交会图版。应用该图版对新完钻的15口井进行解释,经试油验证,解释精度达到了88.5%,效果较好。
The calcium was commonly contained in P Reservoir of Oilfield A,there existed a complex pore structure and strong anisotropy,therefore logging response characteristics of resistivity logging was difficult to fully reflect the changes of reservoir liquid,which caused low precision of fluid identification.In this paper,based on Litho-electric experimental data,the influence of calcium components on the effect of the reservoir resistivity was analyzed in detail,the relationship between calcium content and the resistivity was researched based on the oil testing data,the derivative of the function for the calcium and resistivity was calculated in order to quantify the influence on resistivity.The above method is used for resistivity correction,the crossplot of resistivity and self-potential is established.The chart board is used for oil testing in 15 new wells,it is proven that the fluid identification accuracy reaches 85.7% and good application effect is obtained.
出处
《长江大学学报（自然科学版）》
CAS
2017年第7期45-49,共5页
Journal of Yangtze University(Natural Science Edition)
基金
中国石油天然气股份有限公司科学研究与技术开发项目(2011E-1217)
关键词
流体识别
深侧向电阻率
导数
钙质
校正
fluid identification
deep lateral resistivity
derivative
calcium
correction
