【摘要】：蘇里格氣田位于鄂爾多斯盆地中北部,是迄今為止我國(guó)規(guī)模最大的砂巖巖性氣藏。該氣藏分布主要受砂巖的橫向展布和儲(chǔ)集體物性變化控制,受構(gòu)造影響不明顯,有效儲(chǔ)集層為辮狀河粗砂巖沉積,非均質(zhì)性強(qiáng),連續(xù)性差,開(kāi)發(fā)難度較大,急需建立一套適合該區(qū)塊的河流相含氣砂體預(yù)測(cè)思路和技術(shù)手段,為蘇里格氣田開(kāi)發(fā)提供強(qiáng)有力的技術(shù)支持。 本文以蘇里格地區(qū)河流相儲(chǔ)集層預(yù)測(cè)研究為例,首先分析了盒8段儲(chǔ)層的基本地質(zhì)特征、測(cè)井響應(yīng)特征、地球物理特征等,然后在高精度地震解釋的基礎(chǔ)上,綜合運(yùn)用鉆測(cè)井、地質(zhì)、地震資料,建立波形特征分類(lèi)模板、優(yōu)選橫向高分辨率的地震屬性分析技術(shù),利用連續(xù)的地層切片展示出不同沉積時(shí)期河道的形成、變遷以及消失的過(guò)程,進(jìn)行物源方向預(yù)測(cè)和巖性識(shí)別；利用基于主組分的地震相分析技術(shù),通過(guò)對(duì)地震道的波形特征進(jìn)行分析,建立地震信號(hào)的總體變化以及這種變化的分布特征與沉積相的對(duì)應(yīng)關(guān)系,獲得了地震相的分布,地震相分析的結(jié)果可以預(yù)測(cè)出主河道的平面展布和砂體分布；利用地質(zhì)統(tǒng)計(jì)學(xué)反演與儲(chǔ)層及含氣性之間的關(guān)系,對(duì)反演結(jié)果中的不確定性進(jìn)行試驗(yàn)分析,有效刻畫(huà)了儲(chǔ)層的展布規(guī)律。 本次研究利用地質(zhì)、鉆測(cè)井、地震等資料,綜合運(yùn)用屬性分析、地震相及反演技術(shù),對(duì)蘇里格氣田59區(qū)盒8段儲(chǔ)層進(jìn)行綜合預(yù)測(cè),總結(jié)出一套切實(shí)可行的河道砂體儲(chǔ)集層綜合預(yù)測(cè)方法,為下一步井位部署和勘探開(kāi)發(fā)提供參考。
[Abstract]:Sulige gas field is the largest sandstone lithologic gas reservoir in China, which is located in the central and northern part of Ordos Basin. The distribution of the gas reservoir is mainly controlled by the lateral distribution of sandstone and the change of reservoir physical property, and is not obviously affected by structure. The effective reservoir is composed of braided river coarse sandstone deposit, strong heterogeneity, poor continuity and great difficulty in development. There is an urgent need to establish a set of prediction ideas and technical means of fluvial gas-bearing sand bodies suitable for the block, which will provide strong technical support for the development of Sulige gas field. Taking the prediction of fluvial facies reservoir in Sulige area as an example, this paper analyzes the basic geological characteristics, logging response characteristics, geophysical characteristics and so on of the reservoir in member 8. Then, on the basis of high-precision seismic interpretation, drilling logging is used comprehensively. Geology, seismic data, establishment of waveform feature classification template, selection of lateral and high-resolution seismic attribute analysis techniques, use of continuous stratigraphic slices to show the formation, evolution and disappearance of river channels in different sedimentary periods. Source direction prediction and lithology identification are carried out, and seismic phase analysis technology based on principal component is used to analyze the waveform characteristics of seismic trace. The distribution of seismic facies is obtained by establishing the general variation of seismic signal and the corresponding relation between the distribution characteristics of this variation and sedimentary facies. The results of seismic facies analysis can predict the plane distribution and sand body distribution of the main channel. Based on the relationship between geostatistical inversion and reservoir and gas-bearing property, the uncertainty of inversion results is analyzed experimentally and the distribution of reservoir is described effectively. In this study, using geological, drilling and logging data, seismic data, attribute analysis, seismic facies and inversion techniques, a comprehensive prediction of the reservoir in section 8 of area 59 of Sulige gas field was carried out. A set of feasible comprehensive prediction method of channel sand body reservoir is summarized, which provides a reference for the next well location deployment and exploration and development.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P631.4;P618.13

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本文編號(hào)：2284367