本文關(guān)鍵詞：四川盆地中部須家河組氣、源地化特征及烴源巖生烴能力綜合評(píng)價(jià)　出處：《成都理工大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 川中地區(qū) 須家河組 地化特征 生烴能力 資源評(píng)價(jià)

【摘要】：四川盆地中部地區(qū)石油與天然氣的勘探開發(fā)一直存在難題,很多學(xué)者依據(jù)構(gòu)造地質(zhì)學(xué)、層序地層學(xué)、沉積巖石學(xué)、儲(chǔ)層地質(zhì)學(xué)、天然氣聚集帶理論、源控論、天然氣運(yùn)聚動(dòng)平衡等理論對(duì)須家河組的油氣藏類型、成藏主控因素都進(jìn)行過細(xì)致的研究,本論文利用有機(jī)地球化學(xué)的方法對(duì)川中須家河組氣藏生烴及成藏進(jìn)行研究,將烴源巖有機(jī)地化特征和油氣地學(xué)特征研究結(jié)合,分析烴源巖展布特征與油氣來源,結(jié)合生烴強(qiáng)度的計(jì)算對(duì)須家河組生烴能力進(jìn)行綜合評(píng)價(jià),具體得出的結(jié)論如下:(1)、須家河組為一套湖泊、河流相沉積的含煤地層,自上而下可分為六段,須一段、須三段和須五段是烴源巖的主要富集區(qū),暗色泥巖和煤層以夾層方式分布在須二段、須四段和須六段中。(2)、須家河組主要為Ⅱ2~Ⅲ型干酪根,煤的有機(jī)顯微組分主要為鏡質(zhì)組、惰質(zhì)組,干酪根有機(jī)質(zhì)類型以腐泥型為主,熱演化程度為成熟-高成熟階段,原始有機(jī)質(zhì)豐度相對(duì)較大。(3)、須家河組天然氣主要為濕氣,同時(shí)反應(yīng)出典型的陸源煤型氣特征,母質(zhì)類型為Ⅲ型母質(zhì);須家河組凝析油具有高成熟腐植型成因的特征,且為煤成油。(4)、須家河組的上、下地層中雖然發(fā)育多套烴源層,但是川中地區(qū)構(gòu)造活動(dòng)微弱,結(jié)合須家河組與上下地層油氣源對(duì)比表明,須家河組油氣藏產(chǎn)出的油、氣主要來自本身的烴源巖。(5)、川中地區(qū)須家河組烴源巖(包括暗色泥巖、碳質(zhì)泥巖和煤層)的總生烴強(qiáng)度在10~30×108m3/km2之間,平均為23.0×108m3/km2(相當(dāng)于SPI為2.35),生儲(chǔ)蓋組合為互層式自生自儲(chǔ),烴源巖與儲(chǔ)層在平面上的相互接觸面積大,烴源巖的油氣充載能力屬于中等。
[Abstract]:The exploration and development of petroleum and natural gas in the central part of Sichuan Basin has always been a difficult problem, many scholars based on structural geology, sequence stratigraphy, sedimentary petrology, reservoir geology, natural gas accumulation theory, source control theory. The oil and gas reservoir types of Xujiahe formation and the main controlling factors of reservoir formation have been studied in detail by natural gas migration and accumulation balance theory. In this paper, the hydrocarbon generation and reservoir formation of Xujiahe formation gas reservoir in central Sichuan are studied by using organic geochemistry method. The source rock distribution characteristics and hydrocarbon source are analyzed by combining the organic geochemical characteristics of source rock with the study of hydrocarbon geological characteristics. Combined with the calculation of hydrocarbon generation intensity, the hydrocarbon generating capacity of Xujiahe formation is comprehensively evaluated. The concrete conclusions are as follows: 1. The Xujiahe formation is a set of lakes and fluvial sedimentary coal-bearing strata, which can be divided into six sections from top to bottom. The main rich areas of hydrocarbon source rocks are the three and five members of Xuzhou formation. Dark mudstone and coal seam are distributed in the second member of the second member in the intercalation, and in the middle of the fourth and sixth members, the Xujiahe formation is mainly type 鈪，

本文編號(hào)：1439862