龙虎泡油田葡萄花油层复杂油水层识别方法  

IDENTIFYING METHOD OF THE COMPLEX OIL AND WATER LAYERS IN PUTAOHUA RESERVOIRS OF LONGHUPAO OILFIELD

作　　者：闫伟林[1] 刘传平[1] 李郑辰[1] 钟淑敏[1] YAN Weilin;LIU Chuanping;LI Zhengchen;ZHONG Shumin(Exploration and Development Research Institute of Daqing Oilfield Co Ltd.,Daqing 163712,China)

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2018年第4期133-139,共7页Petroleum Geology & Oilfield Development in Daqing

摘　　要：龙虎泡油田葡萄花油层广泛存在低阻油层和高阻水层,复杂油水层识别是其一大难题。从泥质、钙质、物性、地层水矿化度、钻井液电阻率、导电矿物等方面分析了油水层识别的影响因素,结果表明储层物性、泥质和钙质是其主要影响因素。针对储层物性的影响,采用聚类分析和岩心刻度测井技术建立储层物性分类方法;针对泥质、钙质含量的影响,基于并联导电理论建立了电阻率校正模型。研制油水层识别方法的过程中,首先基于储层分类建立油水层识别图版,图版精度由77.5%提高到84.6%以上;然后对图版中的电阻率进行校正,图版精度进一步提高到88.5%以上。因此储层物性分类和基于并联导电理论的电阻率校正模型是提高复杂油水层识别精度的有效方法。There are wide ranges of the low-resistivity oil layer and high-resistivity water layer in Putaohua reservoirs of Longhupao Oilfield,the identifications of the complex oil and water layers are the difficult problem. From the aspects of the shaly and calcareous contents,physical properties,formation water salinity,mud resistivity,conductive minerals and so on,the influencing factors of the oil and water layer identifications were analyzed. The results show that the shale and calcium contents and moreover the physical properties of the reservoir were the main influencing factors. In view of the influences of the reservoir physical properties,with the help of the clustering analysis and core scale logging technique,the classifying method of the reservoir physical properties was established;in the light of the influences of the shale and calcium contents,on the basis of the theory of parallel conduction,the correcting model of the resistivity was built. In the process of developing the identifying method of the oil-water layer,the identifying chart board of the oil and water layer was first established on the basis of the reservoir classification,the precision of the chart board was increased from 77. 5% to 84. 6% or above,and then the resistivity in the chart board was corrected,the precision of the chart board was further enhanced to 88. 5% or above. Therefore the classification of the reservoir physical properties and the resistivity correcting model based on the theory of parallel conduction are the effective methods to increase the precision of the complex oil-water layer identification.

关 键 词：复杂油水层 泥质 钙质 物性 储层分类 电阻率校正 

分 类 号：P631[天文地球—地质矿产勘探]