基于叠前反演的主河道预测在川东北的应用  

Application of Main Channel Prediction Based on Pre-stack Inversion in Northeast Sichuan Basin

作　　者：韩璇颖 Han Xuanying(SINOPEC Geophysical Research Institute Co.,Ltd.,Nanjing210000)

机构地区：[1]中石化石油物探技术研究院,江苏南京210000

出　　处：《石化技术》2025年第2期289-291,共3页Petrochemical Industry Technology

摘　　要：川东北某区须四段发育巨厚大套细砂岩,但由于砂岩致密、河道叠置沉积、弹性参数特征复杂,相对优质主河道储层预测难度大。首先根据录井解释成果,利用电阻率和泥质含量建立优质主河道的划分标准,然后采用坐标旋转技术构建新的敏感弹性参数,明确主河道的弹性参数特征,最后基于叠前同时反演技术实现研究区优质主河道的预测。实际应用的结果与井的吻合程度高,平面沉积规律合理,为其他区块类似复杂优质河道预测探索了一套新的技术方法。There is a thick and large set of fine sandstone developed in the Xujiahe fourth formation in northeastern Sichuan basin.However,due to the dense sandstone,overlapping sedimentation of river channels,and complex elastic parameter characteristics,it is difficult to predict relatively high-quality main channel reservoirs.Firstly,establishing a classification standard for high-quality main river channels using resistivity and mud content based on logging interpretation results.Then,coordinate rotation technology is used to construct new sensitive elastic parameters and clarifying the elastic parameter characteristics of sandstone in the main river channel.Finally,based on the pre-stack simultaneous inversion technique,the prediction of high-quality main river channels in the study area is achieved.The actual application results are highly consistent with the well,and the planar sedimentation pattern is reasonable.A new set of technical methods for predicting complex and high-quality river channels sandstone for other blocks is explored..

关 键 词：巨厚细砂岩 主河道 叠前反演 储层预测 

分 类 号：P618.13[天文地球—矿床学]