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《Well Logging Technology》 2006-04
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The Genesis of Low Resistivity Pay Zone in Wennan Oilfield and Its Log Evaluation

GE Qiu-xian,ZHANG Tao,YAN An-yu,WANG Li-xin(Well-Logging Company,Zhongyuan Petroleum Exploration Bureau,Puyang,Henan 457001,China)  
With the logs and core data,the genesis of low resistivity pay zones in Wennan oilfield is analysed,which is caused by high irreducible water saturation,high formation water salinity and high shale volume.Proposed are regional correlation method and mixed formation water method of complex lithology for interpretating pay zones with low resistivities in this oilfield.Based on the analysis of regression technique,established are three litho-electric relationship charts of porosities versus sonic log / neutron log / density log;permeability versus porosity;discrimination criterium for identifying oil and water zones with testing typical logging intervals data.The charts given are used to process some complex zones from 75 wells in Wennan Oilfield,the result shows that 96 pay zones are identified again,about 214.1 m,63 oil-water zones,about 151.7 m.The log interpretation agreement rate is up to 90%.
【CateGory Index】: P631.81
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【References】
Chinese Journal Full-text Database 1 Hits
1 Ma Hongyu, Yang Jingqiang, Mo Xiuwen, et al.. The Exploration & Development Institut of Daqing Oilfield,;THE APPLICATION OF MULTTVARIATE ANALYSIS METHOD IN IDENTIFICATION OF THE COMPLICATED OIL AND WATER LAYERS[J];World Well Logging Technology;2006-05
【Citations】
Chinese Journal Full-text Database 1 Hits
1 Zhao Guorui, Wu Jianfeng, et al ..;Experiments and Interpretations of Low Resistivity Pay Zones[J];Well Logging Technology;2002-02
【Co-citations】
Chinese Journal Full-text Database 8 Hits
1 GUO Zhen-hua,LI Li (China Geology University, Wuhan 430074);Discussion on the Cause of Formation and Low Resistance in the Middle and High Mud Sandstone Reservoir at Sha 3 of Block Xia-70 in Linnan Oilfield[J];Journal of Chongqing Petroleum College;2004-01
2 LI Zhao-cheng,et al.(Resources and Information Institute of China University of Petroleum,Dongying 257061,China);Mechanism of low-resistivity reservoir and identification method of curve shape in Qudi Oilfield[J];Petroleum Geology & Oilfield Development in Daqing;2006-06
3 WANG Wei-nan ( Well Logging Company of Drilling & Exploration Group of DPAB, Daqing, Heilongjiang 163412, China );Experimental analysis of the effects of core permeability on formation electrofiltration potential[J];Journal of Daqing Petroleum Institute;2006-04
4 Ge Qiuxian, et al. Geophysical Logging Company of Zhongyuan Petroleum Administration,;ORIGIN AND LOGGING EVALUATION FOR LOW-RESISTIVITY PAYS OF WENNAN OILFIED[J];World Well Logging Technology;2003-05
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7 Liu Shuxia,Quan Junzhao,Guo Yanli,Li Dani Gao Baoling and Zhao Hongmei;Research on interpretation method for the Low-impedance oil Layer in fault block oil reservoir in Biyang concave[J];Petroleum Instruments;2009-03
8 Zhao Liuyun,Cben Qinghua,Liu Qiang. Shengli Professional College of Shandong,Dongying City,Shandong Province,257097 ,China;Recent researches on low resistivity pay zones[J];Petroleum Geology and Recovery Efficiency;2007-01
【Co-references】
Chinese Journal Full-text Database 3 Hits
1 LIU Hong-tao (University of Petroleum,Dongying 257061,China);Reservoir parameter interpreting method of Putaohua oilfield[J];Petroleum Geology & Oilfield Development in Daqing;2004-01
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【Secondary References】
Chinese Journal Full-text Database 1 Hits
1 XUN Zhi-feng,YU Ji-feng (College of Geological Science and Eng.,SUST,Qingdao,Shandong 266510,China);The Application of Cluster and Discriminant Analyses in Logging Lithology Recognition[J];Journal of Shandong University of Science and Technology(Natural Science);2008-05
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