砂砾岩储层地震预测方法研究——以BN油田Y282井区为例  

Study on Seismic Prediction Method of Sandstone Reservoir-Taking the Y282 Well Area of BN Oil Field as an Example

作　　者：隋明阳 SUI Mingyang(Research Institute of Geophysical Exploration,Shengli Oilfield Company,SINOPEC,Dongying 257022,China)

机构地区：[1]中国石油化工股份有限公司胜利油田分公司物探研究院,山东东营257022

出　　处：《河南科技》2025年第3期45-50,共6页Henan Science and Technology

摘　　要：【目的】砂砾岩储层具有埋藏深度大、发育不稳定、多期叠置、储量丰度低的地质特点,储层地震预测描述难度大是制约该类储层有效动用的难题。为解决这一难题,需要对砂砾岩储层地震预测方法进行研究。【方法】首先,分析地震资料,创新形成井控提高地震资料分辨率技术,基于系统辨识理论,以测井高频信息为引导,构建地层对地震波的吸收响应模型,合理保真提高地震资料品质;其次,形成砂砾岩储层地震预测方法系列,在提频地震体的基础上,以测井岩相控制储层纵向结构特征,沉积相约束储层平面展布范围,结合古地貌恢复结果及地震相分析,采取井震双控敏感属性预测技术确定砂体展布规律,实现砂砾岩储层精准预测。【结果】将该技术在BN油田Y282井区未动用储量区开展应用,大幅提高了地震资料分辨率,精细刻画了Y282砂砾岩储层发育边界。【结论】研究成果解决了长期困扰该区砂砾岩储层认识不清的问题,为区块效益建产提供了技术支撑,同时可为其他工区同类型储层开发提供参考。[Purposes]The sandstone reservoir has the geological characteristics of deep burial,unstable multi-period superposition,and low reserves density,and the difficulty of seismic prediction and description of the reservoir is a problem that restricts the effective use of this type of reservoir.In order to solve this problem,it is necessary to study the seismic prediction method of the sandstone reservoir.[Methods]Firstly,the seismic data are analyzed,and the innovative technology of well control to improve the resolution of seismic data is formed based on the seismic data.Based on the system identification theory,the absorption response model of the geological strata to seismic waves is constructed using the high-frequency information of the logging,and the seismic data quality is improved by preserving the amplitude.Secondly,a series of seismic prediction methods for glutenite reservoirs are formed.On the basis of frequency-increasing seismic bodies,the vertical structural characteristics of reservoirs are controlled by logging lithofacies,and the plane distribution range of reservoirs is constrained by sedimentary facies.Combined with the results of paleogeomorphology restoration and seismic facies analysis,the well-seismic dual-control sensitive attribute prediction technology is adopted to determine the sand body distribution law and realize the accurate prediction of glutenite reservoirs.[Findings]The technology was applied in the untapped reserves area of Y282 wellfield in BN oilfield,which greatly improved the resolution of seismic data and delicately depicted the development boundary of the Y282 sandstone reservoir.[Conclusions]The research results have solved the problem of poor understanding of sandstone reservoirs in the area for a long time,providing technical support for the development of the block and benefiting other similar reservoirs in other work areas.

关 键 词：砂砾岩储层 储层预测 古地貌恢复 地震相 地震属性 

分 类 号：TE122[石油与天然气工程—油气勘探]