天然气工业2001，Vol.21Issue(3)：34-36,3.
利用地震资料对川东地区飞仙关鲕滩储层孔隙度的预测研究及效果分析
APPLICATION OF SEISMIC DATA IN PREDICTING THE OOLITIC BEACH RESERVOIR POROSITY IN FEIXIANGUAN FORMATION IN EAST SICHUAN AND ITS EFFECT ANALYSIS
摘要
Abstract
The oolitic beach reservoir in Feixianguan Formation in East Sichuan is a porous reservoir,pores and throats being the places and passages for hydrocarbon storage and flow;and the reserves and productivity of natural gas are directly controlled by the magnitude of porosity.Therefore it is very important to predict the oolitic beach reservoir porosity with high accuracy.On the basis of the empirical equation expressing the relation between porosity and seismic velocity derived form Wyllie time average equation,the empirical equation suitable to this region was obtained in combination with the practical drilling and logging data in this region.Through camparing and analyzing the porosity estimation equation commonly applied to the other regions,it is found that a good correspondence is kept up between both of them,which shows that the rule of the change of porosity with seismic velocity is similar.By means of estimating the porosity of oolitic beach reservoir by the velocity data derived from seismic data inversion,it is indicated that the magnitude of porosity predicted is not only obviously corresponding to the natural gas production measured but also well corresponding to the structural setting.In other words,the result tallies with the geological law,i.e.the porosity is well related to the structural portion,meanwhile the obvious porosity anomalies are found regionally.Through research it is shown that this method is an effective method of predicting oolitic beach reservoir porosity,being of important practical value.关键词
四川盆地/东/储集层/地震资料/孔隙度/天然气/生产能力/估算分类
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吴大奎,李亚林,陈晓超..利用地震资料对川东地区飞仙关鲕滩储层孔隙度的预测研究及效果分析[J].天然气工业,2001,21(3):34-36,3.
