本文選題：疊前振幅處理　切入點：巖石物理特征分析　出處：《西南石油大學》2015年碩士論文

【摘要】：近年來,人們在瑪北斜坡百口泉組的百二段獲得了多口工業(yè)油流井,由x72井區(qū)、mal5井區(qū)和ma131井區(qū)形成的整體連片油氣藏群,顯示出了百口泉組百二段良好的油氣勘探前景。瑪北斜坡區(qū)百口泉組百二段地層為扇三角洲沉積,砂礫巖儲層縱向上多期扇體疊置,橫向巖性及厚度變化大,儲層非均質性強,孔隙類型以剩余粒間孔、粒內溶孔為主,為低孔低滲特征。這一特點使利用測井資料和地震資料進行儲層分類評價和預測存在很大問題。加之地震資料分辨率、信噪比較低,有必要對該區(qū)三維地震資料進行保幅處理工作。如何利用測井、地震資料預測扇三角洲前緣有利相帶,落實目標和有利儲層的空間展布范圍,是該區(qū)急需解決的難題。立足于當前復雜地區(qū)勘探技術的發(fā)展需要,基于對AVO技術的生產背景、發(fā)展歷史、研究現(xiàn)狀及發(fā)展趨勢的了解和認識,開展地震保幅處理工作(振幅處理技術、地表一致性處理技術、疊前時間偏移和精細速度分析等)。開展儲層巖石物理分析及疊前儲層預測工作,明確主要目的層巖石特征及儲層的地球物理響應特征。針對研究工區(qū)資料特點和技術難點,綜合應用地震反演技術(包括基于多屬性的特征曲線疊后反演、AVO疊前反演)等儲層預測方法,對工區(qū)內優(yōu)質儲層分布進行了預測研究,較好的預測了扇三角洲優(yōu)質儲層。為井位部署和儲量上交提供了技術支持。
[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.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P631.4;P618.13

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