银额盆地哈日凹陷下白垩统烃源岩特征及资源潜力
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摘要
哈日凹陷下白垩统发育多套湖相暗色泥岩,各组烃源岩对该区油气勘探具有重要意义。文中利用钻井及岩心分析化验资料,研究了下白垩统各组烃源岩特征,通过开展岩石热解、干酪根显微组分、镜质体反射率、可溶有机质组分及饱和烃色谱-质谱等有机地球化学测试和分析,评价了银根组、苏红图组和巴音戈壁组的烃源岩有机质丰度、类型和成熟度,认为银根组烃源岩属低成熟、偏腐泥型、好烃源岩、苏红图组烃源岩属成熟、腐泥-腐殖混合型、差-中等好烃源岩、巴音戈壁组烃源岩属成熟-高成熟、腐泥-腐殖混合型、中等-好烃源岩,进而分析其生烃潜力,其中银根组生烃潜力最大,其次为巴音戈壁组,苏红图组相对较差,预测哈日凹陷下白垩统总油气资源量为1. 13×10~8t.
Mutiple lacutrine dark mudstones were developed in the Lower Cretaceous of Hari Sag. The source rocks of each group are greatly significant to oil and gas exploration in Hari Sag of Yin'gen-Ejinaqi Basin,the characteristics of source rocks in the Lower Cretaceous were studied,using drilling and core analysis data,the organic geochemical tests and analysis methods concluded rock pyrolysis,kerogen microstructure,vitrinite reflectance,soluble organic matter and saturated hydrocarbon chromatography-mass spectrometry. Based on these,abundance,type and maturity of the source rocks organic matter were evaluated in Yin'gen,Suhongtu and Bayin'gebi Formation. It was revealed that the source rocks of the Yin'gen Formation were low mature,partial-sapropel model and good type. The source rocks of Suhongtu Formation were mature,saprophytic-humic mixed,poor-medium good type. And the source rocks of Bayin'gebi Formation were mature-highly mature,saprophytic-humic mixed,mediumgood type. In the end,the hydrocarbon potential was analyzed. The results showed that the highest hydrocarbon potential Formation was Yin'gen Formation. The second one is the Bayin'gebi Formation and Suhongtu Formation was relatively poor. The total oil and gas resources of the Lower Cretaceous were predicted to be 113 million tons in Hari Sag.
Mutiple lacutrine dark mudstones were developed in the Lower Cretaceous of Hari Sag. The source rocks of each group are greatly significant to oil and gas exploration in Hari Sag of Yin'gen-Ejinaqi Basin,the characteristics of source rocks in the Lower Cretaceous were studied,using drilling and core analysis data,the organic geochemical tests and analysis methods concluded rock pyrolysis,kerogen microstructure,vitrinite reflectance,soluble organic matter and saturated hydrocarbon chromatography-mass spectrometry. Based on these,abundance,type and maturity of the source rocks organic matter were evaluated in Yin'gen,Suhongtu and Bayin'gebi Formation. It was revealed that the source rocks of the Yin'gen Formation were low mature,partial-sapropel model and good type. The source rocks of Suhongtu Formation were mature,saprophytic-humic mixed,poor-medium good type. And the source rocks of Bayin'gebi Formation were mature-highly mature,saprophytic-humic mixed,mediumgood type. In the end,the hydrocarbon potential was analyzed. The results showed that the highest hydrocarbon potential Formation was Yin'gen Formation. The second one is the Bayin'gebi Formation and Suhongtu Formation was relatively poor. The total oil and gas resources of the Lower Cretaceous were predicted to be 113 million tons in Hari Sag.
引文
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[17]王变阳,董丽红,李广涛,等.鄂尔多斯盆地志丹地区长10原油地球化学特征及油源探讨[J].西安科技大学学报,2016,36(4):490-496.WANG Bian-yang,DONG Li-hong,LI Guang-tao,et al.Geochemical characteristics of crude oil and origin of Chang 10 oil reservoir in Zhidan Area,Ordos Basin[J].Journal of Xi’an University of Science and Technology,2016,36(4):490-496.
[18]邬立言,顾信章.热解技术在我国生油岩研究中的应用[J].石油学报,1986,7(2):13-19.WU Li-yan,GU Xin-zhang. The application of pyrolysis technique in source rock research[J]. Acta Petrolei Acta,1986,7(2):13-19.
[19] Lerche I,Yarzab R F,Kendall C G St C. Determination of paleoheat flux from vitrinite reflectance data[J]. American Association of Petrolem Geologists Bulletin,1984,68(11):1704-1717.
[20]董丽红,杜彦军,李军,等.鄂尔多斯盆地中部延长组烃源岩生物标志化合物特[J].西安科技大学学报,2018,38(4):604-610.DONG Li-hong,DU Yan-jun,LI Jun,et al. Biomarker characteristics of hydrocarbon source rocks of Yanchang Formation in central Ordos Basin[J]. Journal of Xi’an University of Science and Technology,2018,38(4):604-610.
[2]赵春晨,刘护创,任来义,等.银额盆地YHC1井白垩系气藏形成的地质环境及其远景意义[J].天然气地球科学,2017,28(3):439-451.ZHAO Chun-chen,LIU Hu-chuang,REN Lai-yi,et al.Geological environment and prospective significance of Cretaceous gas reservoir in Well YHC1 of Yin’e Basin[J]. Natural Gas Geoscience,2017,28(3):439-451.
[3]王小多,刘护创,于珺,等.银额盆地哈日凹陷油气成藏条件研究及有利区带预测[J].科学技术与工程,2015,15(36):142-147.WANG Xiao-duo,LIU Hu-chuang,YU Jun,et al. Research on petroleum geological conditionsand prediction of favorable exploration zone in Hari Sag of Yingen-Ejinaqi Basin[J]. Science Technology and Engineering,2015,15(36):142-147.
[4]卢进才,陈高潮,李玉宏,等.银额盆地及其邻区石炭系-二叠系油气资源远景调查主要进展及成果[J].中国地质调查,2014,1(2):35-44.LU Jin-cai,CHEN Gao-chao,LI Yu-hong,et al. Main progress and achievemengts of the permo-carboniferous petroleum prospective survey in Yin’E Basin and its surrounding areas[J]. Geological Survey of China,2014,1(2):35-44.
[5]黄航.银额盆地上古生界构造格架及区域演化特征分析———以居延海坳陷为例[D].荆州:长江大学,2012.HUANG Hang. Tectonic framework and regional evolutoin characteristics of the Upper Paleozoic in Yin-E Basin:a case study in Juyanhai Depression[D]. Jingzhou:Yangtze University,2012.
[6]杜彦军,贺永红,董丽红,等.鄂尔多斯盆地中部长8成藏主控因素[J].西安科技大学学报,2017,37(3):388-395.DU Yan-jun,HE Yong-hong,DONG Li-hong,et al. Main control factors of tight oil reservoir in Chang 8 oil-bearing formation,central part of Ordos Basin[J]. Journal of XI’AN University of Science and Technology,2017,37(3):388-395.
[7]祁凯,任战利,崔军平,等.银额盆地苏红图坳陷西部中生界烃源岩热演化史恢复[J].地球科学,2018,43(6):1957-1971.QI Kai,REN Zhan-li,CUI Jun-ping,et al. Thermal history reconstruction of mesozoic source rocks in western of Suhongtu Depression,Inner Mongolia,northern China[J]. Earth Science,2018,43(6):1957-1971.
[8]陈治军,任来义,刘护创,等.地球物理方法在哈日凹陷烃源岩预测和评价中的应用[J].石油地质与工程,2016,30(6):30-35.CHEN Zhi-jun,REN Lai-yi,LIU Hu-chuang,et al. Geophysical methods in hydrocarbon source rock prediction and evaluation of Hari Sag[J]. Petroleum Geology and Engineering,2016,30(6):30-35.
[9]魏仙样,卢进才,魏建设.内蒙古银额盆地西部路井凹陷油气地球化学特征与油气源[J].地质通报,2013,32(10):1665-1672.WEI Xian-yang,LU Jin-cai,WEI Jian-she. Petroleum geochemistry and oil and gas sources of the Lujing Depression in western Yin’E basin,Inner Mongolia[J].Geological Bulletin of China,2013,32(10):1665-1672.
[10]白晓寅,韩长春,贺永红,等.银额盆地哈日凹陷火成岩发育特征及其成藏作用[J].岩性油气藏,2018,30(6):18-26.BAI Xiao-yin,HAN Chang-chun,HE Yong-hong,et al.Development characteristics of igneous rocks and its role in hydrocarbon accumulation in Hari Sag,Yingen-Ejinaqi Basin[J]. Lithologic Reservoirs,2018,30(6):18-26.
[11]陈治军,任来义,贺永红,等.银额盆地哈日凹陷银根组优质烃源岩地球化学特征及其形成环境[J].吉林大学学报(地球科学版),2017,47(5):1352-1364.CHEN Zhi-jun,REN Lai-yi,HE Yong-hong,et al. Geochemical characteristics and formation environment of high-quality hydrocarbon source rocks of Yingen Formation in Hari Sag,Yingen-Ejinaqi Basin[J]. Journal of Jilin University(Earth Science Edition),2017,47(5):1352-1364.
[12]陈治军,高怡文,刘护创,等.银根-额济纳旗盆地哈日凹陷下白垩统烃源岩地球化学特征与油源对比[J].石油学报,2018,39(1):69-81.CHEN Zhi-jun,GAO Yi-wen,LIU Hu-chuang,et al. Geochemical characteristics of Lower Cretaceous source rocks and oil-source correlation in Hari Sag,Yingen-Ejinaqi Basin[J]. Acta Petrolei Sinica,2018,39(1):69-81.
[13]黄第藩,李晋超,周翥红,等.陆相有机质演化和成烃机理[M].北京:石油工业出版社,1984.HUANG Di-fan,LI Jin-chao,ZHOU Zhu-hong,et al. Evolution and hydrocarbon generation mechanisms of terrestrial organic matter[M]. Beijing:Petroleum Industrial Press,1984.
[14]王铁冠,钟宁宁,侯读杰,等.低熟油气的形成机理与分布规律[M].北京:石油工业出版社,1995.WANG Tie-guan,ZHONG Ning-ning,HOU Du-jie,et al. Generation mechanisms and distribution of low material hydrocarbon[M]. Beijing:Petroleum Industrial Press,1995.
[15]侯读杰,冯子辉.油气地球化学[M].北京:石油工业出版社,2011.HOU Du-jie,FENG Zi-hui. Geochemistry of oil and gas[M]. Beijing:Petroleum Industrial Press,1995.
[16]程克明,王铁冠,钟宁宁,等.烃源岩地球化学[M].北京:科学出版社,1995.CHENG Ke-ming,WANG Tie-guan,ZHONG Ning-ning,et al. Geochemistry of hydrocarbon source rocks[M].Beijing:Science Press,1995.
[17]王变阳,董丽红,李广涛,等.鄂尔多斯盆地志丹地区长10原油地球化学特征及油源探讨[J].西安科技大学学报,2016,36(4):490-496.WANG Bian-yang,DONG Li-hong,LI Guang-tao,et al.Geochemical characteristics of crude oil and origin of Chang 10 oil reservoir in Zhidan Area,Ordos Basin[J].Journal of Xi’an University of Science and Technology,2016,36(4):490-496.
[18]邬立言,顾信章.热解技术在我国生油岩研究中的应用[J].石油学报,1986,7(2):13-19.WU Li-yan,GU Xin-zhang. The application of pyrolysis technique in source rock research[J]. Acta Petrolei Acta,1986,7(2):13-19.
[19] Lerche I,Yarzab R F,Kendall C G St C. Determination of paleoheat flux from vitrinite reflectance data[J]. American Association of Petrolem Geologists Bulletin,1984,68(11):1704-1717.
[20]董丽红,杜彦军,李军,等.鄂尔多斯盆地中部延长组烃源岩生物标志化合物特[J].西安科技大学学报,2018,38(4):604-610.DONG Li-hong,DU Yan-jun,LI Jun,et al. Biomarker characteristics of hydrocarbon source rocks of Yanchang Formation in central Ordos Basin[J]. Journal of Xi’an University of Science and Technology,2018,38(4):604-610.
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