潼南地区须家河组须二段储层预测
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摘要
潼南地区位于川中—川南过渡带,目前钻探成果充分显示具有良好的含油气前景。针对该区储层具有很强的非均质性,单层厚度薄,低孔隙度,低渗透率,与泥岩速度差异较小,开展储层定量预测存在一定难度,依据地质、地震、测井、试油等资料,从分析须家河组储层地质、地球物理特征入手,研究提出先利用自然伽马反演进行岩性预测,去除泥质后通过速度、孔隙度反演识别有利储层,最后利用双相介质理论进行油气丰度检测,提出了后续勘探目标的首选有利区,经钻探实际检验情况基本吻合。研究表明:在碎屑岩地区采用多井约束地震反演和油气丰度检测,可以较为准确地预测岩性和储层展布,对下步勘探开发有指导意义。
Tongnan area is located at a transition region from Central Sichuan to Southern Sichuan Basin.Its exploration result reveals a great hydrocarbon potential.In this area,the reservoir is characterized by heterogeneity,thin single layer,low permeability and porosity,in addition,the seismic wave velocity of the reservoir is the same as that of shale.Therefore,it is a little difficult to predict reservoir quantitatively.In this research,the geological feature and geophysical property are analyzed at first according to data of geology,seismic,well-logging and well testing;and then,the lithology is predicted by means of the natural gamma-ray inversion;thirdly,the effective reservoir is identified by both velocity and porosity inversion after wiping out the shale;finally,hydrocarbon abundance is detected by the dual-phase medium theory in order to provide a favorable prospect.In fact,the result of reservoir prediction is basically consistent with the drilling result.The research shows that the multi-well constrained inversion and the abundance detection should be adopted in clastic rocks to predict the lithological and reservoir distribution with a relatively high accuracy,which guides to a further exploration and development in Tongnan area.
Tongnan area is located at a transition region from Central Sichuan to Southern Sichuan Basin.Its exploration result reveals a great hydrocarbon potential.In this area,the reservoir is characterized by heterogeneity,thin single layer,low permeability and porosity,in addition,the seismic wave velocity of the reservoir is the same as that of shale.Therefore,it is a little difficult to predict reservoir quantitatively.In this research,the geological feature and geophysical property are analyzed at first according to data of geology,seismic,well-logging and well testing;and then,the lithology is predicted by means of the natural gamma-ray inversion;thirdly,the effective reservoir is identified by both velocity and porosity inversion after wiping out the shale;finally,hydrocarbon abundance is detected by the dual-phase medium theory in order to provide a favorable prospect.In fact,the result of reservoir prediction is basically consistent with the drilling result.The research shows that the multi-well constrained inversion and the abundance detection should be adopted in clastic rocks to predict the lithological and reservoir distribution with a relatively high accuracy,which guides to a further exploration and development in Tongnan area.
引文
[1]杨家静.川中—川南过渡带上三叠统含油气性研究[R].四川成都:中国石油西南油气田分公司勘探开发研究院,2004.
[2]Rebecca Buxton Latimer,Rick Davison,Paul van Riel.Aninterpreter's guide to understanding and working seismic-derived acoustic impedance data[J].The leading edge,2000,19(3):242-256.
[3]Chip Story,Patrick Peng,Jian Dong Lin.Liuhua 11-1Field,South China Sea:A ultrahigh-resolution 3-D seis-mic,inversion,and attribute-based reservoir modeling[J].The leading edge,2000,19(8):834-844.
[4]赵政璋.地震资料解释新技术应用成果交流会论文集[C].北京:石油工业出版社,2001.
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[8]张荣忠,季玉新,崔凯,等.油储地球物理综合描述技术[J].勘探地球物理进展,2002,25(1):11-18.
[9]张光荣.大兴西—名山地区沙溪庙组储层综合预测[J].天然气工业,2005,25(增刊):18-20.
[2]Rebecca Buxton Latimer,Rick Davison,Paul van Riel.Aninterpreter's guide to understanding and working seismic-derived acoustic impedance data[J].The leading edge,2000,19(3):242-256.
[3]Chip Story,Patrick Peng,Jian Dong Lin.Liuhua 11-1Field,South China Sea:A ultrahigh-resolution 3-D seis-mic,inversion,and attribute-based reservoir modeling[J].The leading edge,2000,19(8):834-844.
[4]赵政璋.地震资料解释新技术应用成果交流会论文集[C].北京:石油工业出版社,2001.
[5]贺振华.反射地震资料偏移处理与反演方法[M].重庆:重庆大学出版社,1998.
[6]邹才能,张颖.油气勘探开发实用地震新技术[M].北京:石油工业出版社,2002.
[7]梁红,赖娟.川中—川南过渡带连井剖面二维地震勘探总结报告[R].四川成都:四川石油管理局地球物理勘探公司,2004.
[8]张荣忠,季玉新,崔凯,等.油储地球物理综合描述技术[J].勘探地球物理进展,2002,25(1):11-18.
[9]张光荣.大兴西—名山地区沙溪庙组储层综合预测[J].天然气工业,2005,25(增刊):18-20.
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