凌源-宁城盆地牛营子地区侏罗系海房沟组烃源岩地球化学特征:以牛D1井为例
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摘要
凌源-宁城盆地是松辽盆地外围南部众多具良好油气勘探前景的小盆地之一,为研究其中的油气资源情况,在牛营子地区部署和实施了油气地质调查井——牛D1井。该钻井揭示侏罗系海房沟组可能为研究区重要的烃源岩发育层系之一。系统采集了海房沟组岩心,对其进行了岩石热解、镜质体反射率、气相色谱-质谱等分析及有机地球化学研究。结果表明,海房沟组浅部多为好-很好烃源岩,而深部多为差烃源岩和非烃源岩,有机质类型均主要为Ⅱ_2和Ⅲ型;浅部烃源岩的三环萜烷、升藿烷和甾烷系列丰度较高,规则甾烷呈不对称"V字型";而深部烃源岩的三环萜烷、升藿烷和甾烷系列丰度较低,规则甾烷多呈"反L型"。综合认为海房沟组浅部具有相对较强的生烃潜力,但牛D1井海房沟组烃源岩的成熟度较低,建议今后加强对海房沟组烃源岩展布和成熟度平面分布特征的研究。
The Lingyuan-Ningcheng Basin is one of the small basins with good petroleum exploration prospect in southern periphery of the Songliao Basin.In order to investigate the hydrocarbon resource potential in the study area,we deployed and implemented the oil and gas geological survey well named Niu D1 in the Niuyingzi area.By the techniques of rock pyrolysis,vitrinite reflectance,maceral identification,gas chromatography-mass spectrometry,we analyzed the geochemical characteristics of the Jurassic Haifanggou Formation in the Well Niu D1.The results show that the shallow rocks are mostly good source rocks,while the deep part are mostly barren.The organic materials are mainly Ⅱ_2 and Ⅲ.The shallow source rocks are characterized by high abundance of tricyclic terpane,homohopane and sterane series,partly asymmetric Vshaped distribution for C27-C29 regular steranes(ααα20R),while the deep source rocks are characterized by low abundance of tricyclic terpane,homohopane and sterane series,mostly reversed L-shaped distribution for C_(27)-C_(29) regular steranes(ααα20R).Thus,the shallow source rocks contain more oil-prone macerals and have stronger hydrocarbon-generation potential.T_(max),R_o and biomarker parameters comprehensively reflect that the Haifanggou source rocks remain at a lowmature stage.Through the comprehensive analysis,we suggest that the thickness and maturity distribution characteristics of source rocks should be investigated in the future.
The Lingyuan-Ningcheng Basin is one of the small basins with good petroleum exploration prospect in southern periphery of the Songliao Basin.In order to investigate the hydrocarbon resource potential in the study area,we deployed and implemented the oil and gas geological survey well named Niu D1 in the Niuyingzi area.By the techniques of rock pyrolysis,vitrinite reflectance,maceral identification,gas chromatography-mass spectrometry,we analyzed the geochemical characteristics of the Jurassic Haifanggou Formation in the Well Niu D1.The results show that the shallow rocks are mostly good source rocks,while the deep part are mostly barren.The organic materials are mainly Ⅱ_2 and Ⅲ.The shallow source rocks are characterized by high abundance of tricyclic terpane,homohopane and sterane series,partly asymmetric Vshaped distribution for C27-C29 regular steranes(ααα20R),while the deep source rocks are characterized by low abundance of tricyclic terpane,homohopane and sterane series,mostly reversed L-shaped distribution for C_(27)-C_(29) regular steranes(ααα20R).Thus,the shallow source rocks contain more oil-prone macerals and have stronger hydrocarbon-generation potential.T_(max),R_o and biomarker parameters comprehensively reflect that the Haifanggou source rocks remain at a lowmature stage.Through the comprehensive analysis,we suggest that the thickness and maturity distribution characteristics of source rocks should be investigated in the future.
引文
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Zhang S C,Huang H P.2005.Geochemistry of Palaeozoic marine petroleum from the Tarim Basin,NW China:Part 1.Oil family classification.Organic Geochemistry,36(8):1204-1214
包建平,马安来,黄光辉,李贤庆,钟宁宁.1999.三塘湖盆地原油地球化学特征及其成因类型.石油勘探与开发,26(4):25-29,7
陈建平,赵长毅,何忠华.1997.煤系有机质生烃潜力评价标准探讨.石油勘探与开发,24(1):1-5
陈树旺,丁秋红,郑月娟,李永飞,张健,王杰,方慧,钟清.2013.松辽盆地外围新区、新层系:油气基础地质调查进展与认识.地质通报,32(8):1147-1158
陈树旺,张健,公繁浩,孙守亮,苏飞,甄甄,周新桂,李世臻,黄桂雄,袁智广.2015.内蒙古突泉盆地侏罗系油气发现及工作展望.地质与资源,24(1):1-6
丁秋红,陈树旺,李晓海,李文博,公繁浩,李士超,孙求实.2016.辽宁北部秀水地区中侏罗统地层的厘定及其地质意义.地质通报,35(8):1223-1229
丁秋红,陈树旺,张立君,郑月娟,王杰,张健.2013.松辽盆地外围油气新区中生代地层研究新进展.地质通报,32(8):1159-1176
黄第藩,张大江,李晋超.1989.论4-甲基甾烷和孕甾烷的成因.石油勘探与开发,16(3):8-15
霍永忠,曾凡刚,王关玉.1998.新疆三塘湖盆地侏罗系煤热解参数的有机岩石学研究.北京大学学报(自然科学版),34(6):801-806
卢双舫,张敏.2008.油气地球化学.北京:石油工业出版社:66-67
门相勇,李雪峰,李明.2010.松辽外围东部盆地群构造演化特征及油气前景.中国石油勘探,15(3):7-10
孟仟祥,孙敏卓,房嬛,王作栋,王国仓,徐茵.2007.盐湖相低演化烃源岩的生烃机理及生物标志物演化特征:沥青“A”热模拟.沉积学报,25(5):800-807
王铁冠,钟宁宁,熊波,李贤庆,黄第藩.1994.源岩生烃潜力的有机岩石学评价方法.石油学报,15(4):9-16
肖飞,包建平,朱翠山,张文艳,何海.2012.柴达木盆地西部典型油田原油地球化学特征对比.地球科学与环境学报,34(4):43-52
朱扬明,张春明,张敏,梅博文,金迪威,肖乾华.1997.沉积环境的氧化还原性对重排甾烷形成的作用.沉积学报,15(4):104-108
Davis G A,Meng J F,Cao W R,Du X Q.2009.Triassic and Jurassic tectonics in the eastern Yanshan Belt,North China:Insights from the controversial Dengzhangzi Formation and its neighboring units.Earth Science Frontiers,16(3):69-86
Huang D F,Li J C,Zhang D J,Huang X M,Zhou Z H.1991.Maturation sequence of Tertiary crude oils in the Qaidam basin and its significance in petroleum resource assessment.Journal of Southeast Asian Earth Science,5(1-4):359-366
Ourisson G,Albrecht P,Rolhmer M.1982.Predictive microbial biochemistry from molecular fossils to prokaryotic membranes.Trends in Biochemical Sciences,7(7):236-239
Peters K E,Walters C C,Moldowan J M.2005.The Biomarker Guide.2nd ed.Cambridge,UK:Cambridge University Press
Philp R P,Gilbert T D.1982.Unusual distribution of biological markers in an Australian crude oil.Nature,299(5880):245-247
Van Aarssen B G K,Cox H C,Hoogendoorn P,Leeuw J W D.1990.Acadinene biopolymer in fossil and extant dammar resins as a source for cadinanes and bicadinanes in crude oils from South East Asia.Geochimica et Cosmochimica Acta,54(11):3021-3031
Wang G L,Chang X C,Wang T G,Simoneit B R T.2015.Pregnanes as molecular indicators for depositional environments of sediments and petroleum source rocks.Organic Geochemistry,78:110-120
Zhang S C,Huang H P.2005.Geochemistry of Palaeozoic marine petroleum from the Tarim Basin,NW China:Part 1.Oil family classification.Organic Geochemistry,36(8):1204-1214
包建平,马安来,黄光辉,李贤庆,钟宁宁.1999.三塘湖盆地原油地球化学特征及其成因类型.石油勘探与开发,26(4):25-29,7
陈建平,赵长毅,何忠华.1997.煤系有机质生烃潜力评价标准探讨.石油勘探与开发,24(1):1-5
陈树旺,丁秋红,郑月娟,李永飞,张健,王杰,方慧,钟清.2013.松辽盆地外围新区、新层系:油气基础地质调查进展与认识.地质通报,32(8):1147-1158
陈树旺,张健,公繁浩,孙守亮,苏飞,甄甄,周新桂,李世臻,黄桂雄,袁智广.2015.内蒙古突泉盆地侏罗系油气发现及工作展望.地质与资源,24(1):1-6
丁秋红,陈树旺,李晓海,李文博,公繁浩,李士超,孙求实.2016.辽宁北部秀水地区中侏罗统地层的厘定及其地质意义.地质通报,35(8):1223-1229
丁秋红,陈树旺,张立君,郑月娟,王杰,张健.2013.松辽盆地外围油气新区中生代地层研究新进展.地质通报,32(8):1159-1176
黄第藩,张大江,李晋超.1989.论4-甲基甾烷和孕甾烷的成因.石油勘探与开发,16(3):8-15
霍永忠,曾凡刚,王关玉.1998.新疆三塘湖盆地侏罗系煤热解参数的有机岩石学研究.北京大学学报(自然科学版),34(6):801-806
卢双舫,张敏.2008.油气地球化学.北京:石油工业出版社:66-67
门相勇,李雪峰,李明.2010.松辽外围东部盆地群构造演化特征及油气前景.中国石油勘探,15(3):7-10
孟仟祥,孙敏卓,房嬛,王作栋,王国仓,徐茵.2007.盐湖相低演化烃源岩的生烃机理及生物标志物演化特征:沥青“A”热模拟.沉积学报,25(5):800-807
王铁冠,钟宁宁,熊波,李贤庆,黄第藩.1994.源岩生烃潜力的有机岩石学评价方法.石油学报,15(4):9-16
肖飞,包建平,朱翠山,张文艳,何海.2012.柴达木盆地西部典型油田原油地球化学特征对比.地球科学与环境学报,34(4):43-52
朱扬明,张春明,张敏,梅博文,金迪威,肖乾华.1997.沉积环境的氧化还原性对重排甾烷形成的作用.沉积学报,15(4):104-108
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