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低渗透岩性气藏叠前流体预测应用研究

The Pre- stack Fluid Prediction in Low- permeability Lithologic Gas Reservoir

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【作者】 贺晓张盟勃王大兴王宝江吴汉宁

【Author】 HE Xiao;ZHANG Mengbo;WANG Daxing;WANG Baojiang;WU Hanning;Yanchang Petroleum Institute Group;Research Institute of Changqing Oil field Company;Department of Geology,Northwest University;

【机构】 延长石油集团研究院长庆油田公司勘探开发研究院西北大学地质系

【摘要】 SLG地区二叠系盒8气藏属典型的低孔低渗岩性气藏,纵横向上储层具有强烈的非均质性,流体性质也表现出较大的差异。基于AVO理论的道集分析、叠前弹性反演在SLG气田得到广泛应用。AVO属性对储层含气与否较为敏感,但对含气多少却难以区分,对流体性质更是无法准确判断。针对SLG地区三维地震区块资料的特点,形成一套流体预测技术流程,对储层流体平面展布进行预测。

【Abstract】 The permian Carboniferous He8 section in Sulige gasfield is a typical lithologic gas reservoir with low permeability and low porosity. Both horizonta and vertical physical properties and fluid distribution show heterogeneityl. Based on AVO theory,elastic impedance inversion,and AVO attributes inversion have been used widely and sussessfully in Sulige gasfield. It is very difficult to discern the amount of gas in AVO respond in reservoir,because of its uncertainty,though it is sensitive to the existing of gas. And it is dubious in predicting the fluid property with AVO. In this paper,based on the characteristics of 3D seismic data,we established a set of flow chart for fluid prediction in SLG 3D and predicted the distribution of fluid level by AFI.

【关键词】 AVOAFI流体反演流体替换
【Key words】 AVOAFIhydrocarbon detectionfluid inversion
【基金】 陕西省普通高等学校重点学科专项资金项目(081802)
  • 【文献出处】 重庆科技学院学报(自然科学版) ,Journal of Chongqing University of Science and Technology(Natural Sciences Edition) , 编辑部邮箱 ,2015年03期
  • 【分类号】P618.13;P631.4
  • 【下载频次】33
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