准噶尔盆地玛北斜坡三叠系百口泉组二段叠前反演及储层预测

发布时间：2018-04-04 02:22

本文选题：叠前振幅处理　切入点：岩石物理特征分析　出处：《西南石油大学》2015年硕士论文

【摘要】：近年来,人们在玛北斜坡百口泉组的百二段获得了多口工业油流井,由x72井区、mal5井区和ma131井区形成的整体连片油气藏群,显示出了百口泉组百二段良好的油气勘探前景。玛北斜坡区百口泉组百二段地层为扇三角洲沉积,砂砾岩储层纵向上多期扇体叠置,横向岩性及厚度变化大,储层非均质性强,孔隙类型以剩余粒间孔、粒内溶孔为主,为低孔低渗特征。这一特点使利用测井资料和地震资料进行储层分类评价和预测存在很大问题。加之地震资料分辨率、信噪比较低,有必要对该区三维地震资料进行保幅处理工作。如何利用测井、地震资料预测扇三角洲前缘有利相带,落实目标和有利储层的空间展布范围,是该区急需解决的难题。立足于当前复杂地区勘探技术的发展需要,基于对AVO技术的生产背景、发展历史、研究现状及发展趋势的了解和认识,开展地震保幅处理工作(振幅处理技术、地表一致性处理技术、叠前时间偏移和精细速度分析等)。开展储层岩石物理分析及叠前储层预测工作,明确主要目的层岩石特征及储层的地球物理响应特征。针对研究工区资料特点和技术难点,综合应用地震反演技术(包括基于多属性的特征曲线叠后反演、AVO叠前反演)等储层预测方法,对工区内优质储层分布进行了预测研究,较好的预测了扇三角洲优质储层。为井位部署和储量上交提供了技术支持。
[Abstract]:In recent years, a number of industrial oil flow wells have been obtained in Baikouquan formation on the northern slope of Mabei Slope. The integrated continuous oil and gas reservoirs formed in well No. 5 and ma131 well area of X72 well area show a good prospect for oil and gas exploration in the hundred second member of Baikouquan formation.The Baikouquan formation of Baikouquan formation in Mabei slope area is a fan delta sedimentary formation. The sand gravel reservoir is superimposed on fan bodies in many stages vertically. The lateral lithology and thickness change greatly, and the reservoir heterogeneity is strong. The pore types are mainly residual intergranular pores and intragranular dissolved pores.It is characterized by low porosity and low permeability.This feature makes reservoir classification evaluation and prediction with logging data and seismic data have great problems.In addition, the resolution of seismic data and the low signal-to-noise ratio (SNR) are relatively low, so it is necessary to carry out amplitude preserving processing of 3D seismic data in this area.How to use logging and seismic data to predict the favorable facies zone in front of fan delta and to implement the target and the spatial distribution of favorable reservoir is a difficult problem to be solved urgently in this area.Based on the development needs of exploration technology in complex areas and the understanding of the production background, development history, research status and development trend of AVO technology, seismic amplitude preserving processing (amplitude processing technology) is carried out.Surface consistency processing, prestack time migration and fine velocity analysis.The rock physical analysis and prestack reservoir prediction are carried out to determine the rock characteristics of the main target layer and the geophysical response characteristics of the reservoir.In view of the characteristics and technical difficulties of the study area data, the reservoir prediction methods such as seismic inversion technique (including multi-attribute based prestack inversion of characteristic curves / AVO) are used to predict the distribution of high quality reservoirs in the working area.Better prediction of fan delta high quality reservoir.It provides technical support for well location deployment and reserve handing over.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.4;P618.13

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