本文關(guān)鍵詞：子洲氣田山2儲(chǔ)層擴(kuò)邊潛力評(píng)價(jià)及有利區(qū)篩選　出處：《西安石油大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

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【摘要】：子洲氣田目前投產(chǎn)較早的氣井井口壓力下降快、低效井增多,對(duì)氣田穩(wěn)產(chǎn)提出了挑戰(zhàn)。綜合利用測(cè)井?dāng)?shù)據(jù)、巖心觀(guān)察和大量的實(shí)驗(yàn)測(cè)試結(jié)果,將宏觀(guān)與微觀(guān)結(jié)合、從定性分析到定量評(píng)價(jià),系統(tǒng)研究了氣田及其周邊地區(qū)的構(gòu)造特征、沉積微相與砂體展布特征,儲(chǔ)層特征和成巖作用,在此基礎(chǔ)上進(jìn)行了擴(kuò)邊潛力評(píng)價(jià),篩選了有利目標(biāo)區(qū)。(1)研究區(qū)的構(gòu)造基本繼承了鄂爾多斯盆地區(qū)域構(gòu)造的整體特征,自北向南發(fā)育了多個(gè)大小不一的鼻隆構(gòu)造,主要分布在臺(tái)8井、榆143井、榆39井等周?chē)鷧^(qū)域,而且鼻狀構(gòu)造有良好的繼承性。(2)研究區(qū)山23段主要發(fā)育三角洲平原沉積,平面上,發(fā)育多支分流河道,在氣田中部多支河道交匯。垂向上,發(fā)育多期河道,相互疊置。山23段砂體呈近南北向展布,呈厚層塊狀或垂向疊置型,橫向連通性好,單層厚度多在2.5~6m不等,最大可達(dá)近10m。(3)研究區(qū)山23氣層組巖性以石英砂巖為主,孔隙類(lèi)型包括殘余粒間孔、溶孔及晶間微孔,孔隙組合類(lèi)型主要為粒間孔-溶孔型,喉道類(lèi)型以可變斷面的收縮部分為主,其次是片狀或彎片狀喉道。參考多項(xiàng)指標(biāo),可劃分出6種成巖相,高嶺石+石英加大膠結(jié)弱溶蝕相分布最為廣泛。(4)根據(jù)上述分析結(jié)果,研究區(qū)山23段儲(chǔ)層可劃分為Ⅰ、Ⅱ、Ⅲ和Ⅳ四個(gè)類(lèi)別,在儲(chǔ)層評(píng)價(jià)的基礎(chǔ)上,建立了主力層系山23有利區(qū)優(yōu)選標(biāo)準(zhǔn),篩選出有利區(qū)Ⅰ類(lèi)、Ⅱ類(lèi)和Ⅲ類(lèi)儲(chǔ)層,為進(jìn)一步勘探開(kāi)發(fā)子洲氣田提供了依據(jù)。
[Abstract]:At present, the wellhead pressure of gas wells in Zizhou gas field which was put into production earlier has dropped rapidly, and the number of inefficient wells has increased, which poses a challenge to the stable production of the gas field. Comprehensive use of logging data, core observation and a large number of experimental test results. Combining macro and micro, from qualitative analysis to quantitative evaluation, the structural characteristics, distribution characteristics of sedimentary microfacies and sand bodies, reservoir characteristics and diagenesis of the gas field and its surrounding areas are systematically studied. On the basis of this, the potentiality of the extension is evaluated, and the favorable target area. 1) the structure of the study area basically inherits the overall characteristics of the regional structure of the Ordos basin. From north to south, a number of nasal uplift structures of different sizes have been developed, mainly distributed in the surrounding areas of well Tai 8, well Yu 143, well Yu 39 and so on. Moreover, the nose structure has a good inheritance. 2) the mountain 23 member of the study area is mainly developed delta plain sediments, on the plane, there are many distributary channels, and many channels meet vertically in the middle of the gas field. The sand bodies of member 23 are distributed in the direction of north to south, with thick layer block or vertical superposition, good transverse connectivity, and the thickness of single layer varies from 2.5m to 6m. The lithology of Shan 23 gas formation in the study area is mainly composed of quartz sandstone. The pore types include residual intergranular pore, dissolved pore and intergranular micropore, and the pore assemblage type is mainly intergranular porosity and dissolved pore type. The main type of throat is the contraction part of the variable section, followed by the flake or curved throat. Six diagenetic facies can be classified by referring to many indexes. According to the above analysis results, the reservoir of Shan23 member in the study area can be divided into four categories: I, II, III and 鈪，

本文編號(hào)：1418499