發(fā)布時(shí)間：2018-06-17 11:04

  本文選題：準(zhǔn)噶爾盆地南緣 + 蘆草溝組��； 參考：《長(zhǎng)安大學(xué)》2015年碩士論文

【摘要】：隨著我國(guó)油氣能源對(duì)外依賴程度逐年攀升,油頁(yè)巖這種非常規(guī)能源受到了廣泛的重視。我國(guó)油頁(yè)巖資源豐富,其中準(zhǔn)噶爾盆地探明油頁(yè)巖資源量為4×108t。本文在前人研究基礎(chǔ)上,以典型野外露頭剖面踏勘、實(shí)測(cè)、樣品采集及室內(nèi)樣品分析測(cè)試為依據(jù),在蘆草溝組油頁(yè)巖地層對(duì)比、環(huán)境分析及巖石學(xué)特征分析基礎(chǔ)上,通過(guò)油頁(yè)巖巖石熱解分析及油頁(yè)巖抽提物氣相色譜-質(zhì)譜分析,評(píng)價(jià)油頁(yè)巖有機(jī)質(zhì)豐度、類型及成熟度,探討油頁(yè)巖母質(zhì)來(lái)源、成因及生烴潛力,為研究區(qū)油頁(yè)巖勘探開(kāi)發(fā)提供依據(jù)。研究區(qū)在中二疊統(tǒng)蘆草溝組沉積時(shí)期為以淡水為主間或有半咸水介入的內(nèi)陸湖泊,主要發(fā)育濱湖、淺湖以及半深湖-深湖相沉積。油頁(yè)巖巖石熱解參數(shù)中,總有機(jī)碳含量平均為8.68%、生烴潛量(S1+S2)平均為40.81mg/g,表明油頁(yè)巖以中等品位為主;氫指數(shù)、母質(zhì)類型指數(shù)及降解率參數(shù)指示有機(jī)質(zhì)類型較好,主要為II1型干酪根;最高熱解峰溫(Tmax)平均為439℃,表明有機(jī)質(zhì)成熟度較低,主要處于低熟-成熟演化階段。熱解參數(shù)顯示蘆草溝組油頁(yè)巖具有較大的生烴潛力。油頁(yè)巖抽提物生物標(biāo)志化合物參數(shù)m(∑nC21-)/m(∑nC22+)、m(Pr)/m(nC17)-m(Ph)/m(nC18)比值關(guān)系圖、C27-C28-C29甾烷三角關(guān)系圖表明研究區(qū)油頁(yè)巖形成于弱還原-還原環(huán)境、有機(jī)質(zhì)類型主要為腐殖-腐泥型、成烴母質(zhì)主要來(lái)源于藻類等低等水生生物。m(Ts)/m(Tm)、C3117α-升藿烷m[22S/(22S+22R)]、m(莫烷)/m(藿烷)值、C29甾烷ββ/(ββ+αα)與αααC29甾烷20S/(20S+20R)比值關(guān)系圖以及視鏡質(zhì)體反射率(Rc)等參數(shù)表明蘆草溝組油頁(yè)巖處于低熟-成熟演化階段。研究區(qū)油頁(yè)巖埋藏深度較淺、礦層分布穩(wěn)定、資源量豐富、生烴潛力較大,具有良好的開(kāi)發(fā)前景,適用于露天開(kāi)采、地面干餾制取頁(yè)巖油的異地開(kāi)采法開(kāi)采。
[Abstract]:With the increasing degree of external dependence of oil and gas energy in China, oil shale, as an unconventional energy source, has been paid more and more attention. China is rich in oil shale resources, of which the proved oil shale resource in Junggar Basin is 4 脳 108 t. On the basis of previous studies, this paper is based on typical outcrop profile survey, field measurement, sample collection and laboratory sample analysis and testing, on the basis of oil shale stratigraphic correlation, environmental analysis and petrological characteristics analysis of the Lucaogou formation. Through pyrolysis analysis of oil shale rock and gas chromatography-mass spectrometry analysis of oil shale extract, the abundance, type and maturity of organic matter in oil shale are evaluated, and the source, origin and hydrocarbon generation potential of oil shale are discussed. It provides the basis for oil shale exploration and development in the study area. During the deposition period of the Lucaogou formation of the Middle Permian, the study area was an inland lake mainly composed of fresh water and brackish water, mainly developed littoral lake, shallow lake and semi-deep lacustry-deep lacustrine facies. In the pyrolysis parameters of oil shale, the average content of total organic carbon is 8.68, and the potential of hydrocarbon generation is 40.81 mg / g, indicating that the oil shale is mainly of medium grade, and the hydrogen index, parent material type index and degradation rate parameter indicate that the organic matter type is good. The average peak temperature of pyrolysis is 439 鈩，

本文編號(hào)：2030817