本文選題：蘇里格氣田　切入點(diǎn)：A區(qū)塊　出處：《西南石油大學(xué)》2017年碩士論文

【摘要】：位于鄂爾多斯盆地北部的蘇里格氣田,是我國(guó)特大型氣田,其下古生界馬家溝組儲(chǔ)層為典型的碳酸鹽巖儲(chǔ)層。本文以蘇里格氣田A區(qū)塊為研究對(duì)象,對(duì)馬家溝組主力氣層馬五段進(jìn)行儲(chǔ)層特征及測(cè)井評(píng)價(jià)研究,為后續(xù)研究區(qū)儲(chǔ)層評(píng)價(jià)及開(kāi)發(fā)提供依據(jù)。在綜合利用巖心資料、測(cè)井資料以及地質(zhì)資料的基礎(chǔ)上,本文從巖石學(xué)特征、物性特征和儲(chǔ)集空間類型三個(gè)方面對(duì)馬家溝組馬五段的儲(chǔ)層特征進(jìn)行了研究,發(fā)現(xiàn)馬五段儲(chǔ)層巖石類型以白云巖為主;儲(chǔ)集空間主要有晶間孔、溶孔、晶間溶孔等;儲(chǔ)層整體具有低孔、低滲的特征。依據(jù)巖心、薄片以及測(cè)井等資料對(duì)馬家溝組儲(chǔ)層的沉積相、沉積微相的研究表明,馬家溝組儲(chǔ)層常發(fā)育層理、鳥(niǎo)眼構(gòu)造、結(jié)核等沉積構(gòu)造,屬潮坪亞相;沉積微相類型主要有云坪、灰云坪、泥云坪等。利用研究區(qū)儲(chǔ)層巖心物性分析數(shù)據(jù)和測(cè)井資料建立了適合研究區(qū)碳酸鹽巖儲(chǔ)層的泥質(zhì)含量模型、孔隙度模型、滲透率模型和飽和度模型,通過(guò)模型檢驗(yàn),精度高,具有良好的適用性。采用經(jīng)驗(yàn)統(tǒng)計(jì)法和交會(huì)圖法相結(jié)合確定了儲(chǔ)層的物性下限,孔隙度下限為1.6%,滲透率下限為0.024× 103μm2。本文采用了交會(huì)圖法以及側(cè)向-陣列感應(yīng)法開(kāi)展儲(chǔ)層流體性質(zhì)識(shí)別研究,發(fā)現(xiàn)兩種方法均能較好的區(qū)分氣層、水層、含氣層等,其中交會(huì)圖法識(shí)別效果最好,實(shí)際中綜合應(yīng)用各種方法識(shí)別流體性質(zhì)才能取得更好的效果。通過(guò)對(duì)儲(chǔ)層分布控制的主要因素分析,選取沉積微相、孔隙度、滲透率、有效厚度及聲波時(shí)差作為關(guān)鍵參數(shù),采用賦值的方法對(duì)有利區(qū)進(jìn)行了優(yōu)選,在研究區(qū)劃分出3個(gè)Ⅰ類有利區(qū)、12個(gè)Ⅱ類有利區(qū)、12個(gè)Ⅲ類有利區(qū),其中Ⅰ類勘探開(kāi)發(fā)價(jià)值最高。
[Abstract]:Sulige gas field, located in the northern part of Ordos Basin, is a super large gas field in China. The Lower Paleozoic Majiagou formation reservoir is a typical carbonate reservoir. The reservoir characteristics and logging evaluation of the main gas formation of Majiagou formation are studied in order to provide the basis for reservoir evaluation and development in the follow-up study area. On the basis of comprehensive utilization of core data, logging data and geological data, In this paper, the reservoir characteristics of the Mawu member of the Majiagou formation are studied from three aspects: petrological characteristics, physical properties and reservoir space types. It is found that the reservoir rock type of the Majiagou formation is dolomite, and the reservoir space is mainly composed of intergranular pores and dissolved pores. The study of sedimentary facies and sedimentary microfacies of Majiagou formation reservoir shows that the reservoir of Majiagou formation often develops stratification and bird-hole structure. The sedimentary structures, such as nodules, belong to tidal flat subfacies, and the main types of sedimentary microfacies are Yunping, grey cloud flat, mud cloud flat, etc. Based on the reservoir core physical property analysis data and logging data in the study area, a mud content model suitable for carbonate reservoir in the study area has been established. The porosity model, permeability model and saturation model have high accuracy and good applicability through model test. The lower limit of physical properties of reservoir is determined by combining empirical statistics method and cross plot method. The lower limit of porosity is 1.6 and the lower limit of permeability is 0.024 脳 10 ~ 3 渭 m ~ (2). In this paper, the cross plot method and the lateral array induction method are used to identify the reservoir fluid properties. It is found that the two methods can distinguish gas reservoir, water layer, gas bearing layer and so on. The cross plot method is the best method to identify the fluid properties. Through the analysis of the main factors controlling reservoir distribution, the sedimentary microfacies, porosity, permeability are selected. The effective thickness and acoustic moveout are taken as the key parameters, and the favorable areas are selected by the method of assignment. In the study area, there are 3 favorable areas of type 鈪，

本文編號(hào)：1695375