Study on water saturation computation models in complex pore volcanic reservoir |
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| Authors: | BIAN Huiyuan SHI Danhong HAN Shuang PAN Baozhiand ZHANG Lihua |
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| Institution: | BIAN Huiyuan 1,SHI Danhong2,HAN Shuang3,PAN Baozhi1 and ZHANG Lihua1 1.College of Geo-Exploration Science and Technology,Jilin University,Changchun 130026,China;2.No.2 Well Logging Company,Daqing Drilling&Exploration Engineering Corp.,Songyuan 138000,Jilin,China;3.Research Institute of Exploration and Development,Northeast Oil&Gas Branch,SINOPEC,Changchun 130026,China |
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| Abstract: | Determination of water saturation is important for reservoir evaluation.When complex pore structures such as fracture and cavity are present in reservoir,Archie equation is no longer suitable.According to different models of pore structure division,the authors studied water saturation computation models.The results show that dual porosity system is divided into four models.The first model is based on dual laterolog,the second is Dual Porosity Ⅰ,the third is Dual Porosity Ⅱ,and the last one is based on the conductive pore.Besides,the triple porosity system is triple porosity model.Compute water saturation was using all the above five models in volcanic reservoir in Songnan gas field.The triple porosity system is the most suitable model for water saturation computation in complex pore structure volcanic reservoir. |
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| Keywords: | water saturation triple porosity model dual porosity model complex pore structure |
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