中江气田沙溪庙组河道砂岩储层定量预测  

Quantitative prediction of channel sandstone reservoir in Shaximiao formation of Zhongjiang gas field

作　　者：赵迪[1] 

机构地区：[1]中国石化西南油气分公司勘探开发研究院,成都610041

出　　处：《物探化探计算技术》2017年第5期657-662,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家科技重大专项(2016ZX05002004005)

摘　　要：川西坳陷中江气田沙溪庙组河道砂体发育,但砂体发育特征复杂,且优质储层分布特征不明,有必要开展主要目的层河道砂体储层定量预测技术研究。在地震岩石物理分析的基础上,采用逐级控制的研究思路,首先综合采用多种地球物理技术开展目的层河道砂体展布刻画,然后基于叠后地质统计学反演技术实现岩性预测和孔隙度协模拟,最后在有利相带范围内实现了储层参数定量预测,且预测精度较高。结果表明,逐级控制的研究思路是取得可靠性预测结果的保障,地震岩石物理分析和地质统计学反演是主要关键技术。The development features of sandstone developed in Shaximiao formation in ZhongJiang gas field of west Sichuan depression are complicated.The distribution features of high-quality reservoir are unknown,so it is necessary to carry out study on quantitative prediction for channel sandstone of major target,to provide evidence for evaluation of rolling exploration and development,and well site deployment.Based on seismic petrophysical analysis,agradual controlling study idea is adopted.firstly,multiple geophysical techniques are synthetically applied to characterize distribution of channel sandstone,then poststack geo-statistics inversion technology is used to realize lithology prediction and porosity cosimulation.Finally,quantitative prediction of reservoir parameters are realized in zone of favorable facies belt,and results with high accuracy are gained,providing strong support for evaluation of rolling exploration and development,and well site deployment.The result shows that the gradual controlling study idea is guarantee of reliable results,seismic petrophysical analysis and geo-statistics inversion are key technologies.

关 键 词：沙溪庙组 河道砂岩 地质统计学反演 定量预测 

分 类 号：P631.4[天文地球—地质矿产勘探]