發(fā)布時間：2018-05-10 08:41

  本文選題：中、新元古界 + 烴源巖　； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：渤海灣盆地是中國東部富含油氣資源的大型盆地,北部廣泛發(fā)育中、新元古界的長城系、薊縣系和青白口系地層,地層厚度大,研究潛力巨大。渤海灣盆地北部的中、新元古界海相碳酸鹽巖分布廣泛,且沉積巖層巨厚,對碳酸鹽巖作為烴源巖的研究具有極其重要的經(jīng)濟價值和社會效益。由于本區(qū)勘探程度較低,缺失井下資料數(shù)據(jù),本論文旨在根據(jù)野外露頭資料和綜合前人研究資料對渤海灣盆地北部中、新元古界烴源巖進(jìn)行綜合評價,為研究該區(qū)深層的油氣藏成藏條件和勘探潛力奠定基礎(chǔ)。在渤海灣盆地北部中、新元古界露頭區(qū)選取了75塊中、新元古界野外烴源巖分析樣品,進(jìn)行了總有機碳、全巖顯微組分鑒定和巖石熱解分析等項目,并利用氣相色譜-質(zhì)譜對烴源巖氯仿抽提物及重要生物標(biāo)識化合物展開了定性與定量檢測。渤海灣盆地北部中、新元古界地層發(fā)育,烴源巖主要為黑色、灰黑色頁巖和海相碳酸鹽巖。綜合前人研究成果和本區(qū)烴源巖實際情況,將本區(qū)頁巖烴源巖有機質(zhì)豐度下限定為0.3%,碳酸鹽巖烴源巖豐度下限定為0.15%。綜合評價來看,本區(qū)中、新元古界下馬嶺組、鐵嶺組、洪水莊組頁巖為好烴源巖,高于莊組和霧迷山組碳酸鹽巖評價為差烴源巖,但由于霧迷山組地層巨厚,仍具有一定的生烴潛力。本區(qū)烴源巖生物標(biāo)志化合物種類繁多,根據(jù)飽和烴生物標(biāo)志化合物分析結(jié)果表明,中、新元古界烴源巖的有機質(zhì)主要源于菌藻類低等生物,有機質(zhì)類型較好,多為Ⅰ-Ⅱ1型,中、晚元古代藻類浮游植物的繁盛和細(xì)菌的強烈活動是中、上元古界烴源巖有機質(zhì)生源構(gòu)成的重要前提和物質(zhì)基礎(chǔ)。冀中北部中、新元古界生烴量遠(yuǎn)大于冀北地區(qū)。
[Abstract]:Bohai Bay Basin is a large basin rich in oil and gas resources in eastern China. The the Great Wall system, Jixian system and Qingbakou system of Neoproterozoic are widely developed in the north of China. The Mesoproterozoic marine carbonate rocks in the northern part of Bohai Bay Basin are widely distributed and the sedimentary rocks are very thick, which is of great economic and social value to the study of carbonate rocks as hydrocarbon source rocks. Due to the low level of exploration and the lack of underground data, this paper aims at synthetically evaluating the source rocks of the Neoproterozoic in the northern part of Bohai Bay Basin based on outcrop data and comprehensive previous research data. It lays a foundation for studying the reservoir forming conditions and exploration potential of deep reservoirs in this area. In the northern Bohai Bay Basin, 75 samples of the Neoproterozoic outcrop were selected to analyze the source rocks of the Neoproterozoic, and the total organic carbon (TOC), whole rock macerals and pyrolysis analysis were carried out. The chloroform extracts and important biomarkers of source rock were detected qualitatively and quantitatively by gas chromatography-mass spectrometry. Neoproterozoic strata developed in the northern Bohai Bay Basin, and the source rocks are mainly black, gray and black shale and marine carbonate rocks. Based on the previous research results and the actual situation of source rocks in this area, the organic matter abundance of shale source rocks in this area is limited to 0.3 and that of carbonate source rocks to 0.15. According to the comprehensive evaluation, the shale rocks of the Lower Maling formation, Tieling formation and Hongzhuang formation in the Neoproterozoic are good source rocks, which are higher than those of carbonate rocks of Zhuang formation and Wumishan formation, but the formation of Wumishan formation is very thick. It still has some hydrocarbon generating potential. According to the analysis of saturated hydrocarbon biomarkers, the organic matter of the Mesoproterozoic source rocks is mainly derived from the low organisms of bacteria and algae, and the type of organic matter is good, most of which are 鈪，

本文編號：1868621