南堡凹陷下古生界流体包裹体特征及成藏期研究
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摘要
通过流体包裹体的透射光和荧光镜下观察、包裹体均一温度测定,对南堡凹陷下古生界碳酸盐岩流体包裹体特征及油气成藏期进行了研究。结果表明:南堡凹陷下古生界碳酸盐岩储层流体包裹体较为发育,主要在碳酸盐岩脉中沿愈合裂缝呈带状分布,烃类包裹体在荧光下呈黄白色--蓝白色,说明研究区油气成熟度相对较高;由包裹体均一温度实测结果可知,该区包裹体均一温度具有明显的双峰特征,峰值分别为70℃~80℃和130℃~140℃;结合埋藏史和热演化史进行综合研究,认为研究区下古生界碳酸盐岩储层主要经历了两期油气充注,第一期为25~22 Ma(东营末期—馆陶早期),第二期为8~5 Ma(明化镇中期)。
Based on observations of transmission light and fluoroscope as well as on measuring of homogenization temperature of fluid inclusions,the characteristics of fluid inclusions and hydrocarbon accumulation phases of the Lower Paleozoic carbonate reservoir in Nanpu Depression are discussed. The results indicate that the fluid inclusions are relatively abundant with zonal distribution along the healed fracture in carbonate veins of Nanpu Depression. Organic inclusions present yellowish white and blue-white fluorescents,which indicates a higher maturity of oil and gas in this area. Homogenization temperatures measured in aqueous inclusions associated with hydrocarbon ones show a bimodal distribution with 70℃ ~ 80℃ and 130℃ ~ 140℃ as double peaks. Combined with burial history and thermal evolution history,the Lower Paleozoic carbonate reservoirs in Nanpu Depression experienced two hydrocarbon accumulation phases,corresponding to 25 ~ 22 Ma( from the late Dongying stage to the early Guantao stage) and 8 ~ 5 Ma( the middle minghuazhen stage).
Based on observations of transmission light and fluoroscope as well as on measuring of homogenization temperature of fluid inclusions,the characteristics of fluid inclusions and hydrocarbon accumulation phases of the Lower Paleozoic carbonate reservoir in Nanpu Depression are discussed. The results indicate that the fluid inclusions are relatively abundant with zonal distribution along the healed fracture in carbonate veins of Nanpu Depression. Organic inclusions present yellowish white and blue-white fluorescents,which indicates a higher maturity of oil and gas in this area. Homogenization temperatures measured in aqueous inclusions associated with hydrocarbon ones show a bimodal distribution with 70℃ ~ 80℃ and 130℃ ~ 140℃ as double peaks. Combined with burial history and thermal evolution history,the Lower Paleozoic carbonate reservoirs in Nanpu Depression experienced two hydrocarbon accumulation phases,corresponding to 25 ~ 22 Ma( from the late Dongying stage to the early Guantao stage) and 8 ~ 5 Ma( the middle minghuazhen stage).
引文
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[20]成永生,陈松岭.渤海湾盆地南堡凹陷外围古生界油气成藏研究[J].地质找矿论丛,2008,23(4):330-338.CHENG Yong-sheng,CHEN Song-ling.Study on the Paleozoic hydrocarbon pool forming in peripheral of Nanpu Sag,Bohai Bay Basin[J].Contributions to Geology and Mineral Resources Research,2008,23(4):330-338.
[2]卢焕章,范宏瑞,倪培,等.流体包裹体[M].北京:科学出版社,2004:20-21.LU Huan-zhang,FAN Hong-rui,NI Pei,et al.Fluid inclusion[M].Beijing:Science Press,2004:20-21.
[3]徐良,杨光,夏淑华.流体包裹体技术在油气成藏期次研究中的应用:以黑帝庙地区为例[J].吉林大学学报:地球科学版,2006,36(增刊):29-32.XLiang,YANG Guang,XIA Shu-hua.Application of fluid inclusions in study of the times and stages of hydrocarbon reservoir filling:a case study of Heidimiao area in South Songliao Basin[J].Journal of Jilin University:Earth Science Edition,2006,36(Suppl.):29-32.
[4]尹伟,别毕文,刘桂禄.准噶尔盆地中央坳陷带包裹体特征及成藏期次分析[J].矿物岩石地球化学通报,2009,28(1):53-60.YIN Wei,BIE Bi-wen,LIU Gui-lu.Characteristics of fluid inclusions and its application to identifying oil accumulating stages in central depression,Junggar Basin[J].Bulletin of Mineralogy,Petrology and Geochemistry,2009,28(1):53-60.
[5]于明德,王璞珺,施昌瑞,等.焉耆盆地包裹体特征和伊利石测年对油气成藏期次的指示[J].吉林大学学报:地球科学版,2009,39(1):45-52.YU Ming-de,WANG Pu-jun,SHI Chang-rui,et al.Indication of oil-gas migration&accumulation with fluid inclusion characteristics and illite dating in Yanqi Basin[J].Journal of Jilin University:Earth Science Edition,2009,39(1):45-52.
[6]龚永杰.海拉尔盆地乌尔逊凹陷南部油气成藏期次研究[J].世界地质,2012,31(4):748-752.GONG Yong-jie.Research on the reservoir-forming stages in southern Wuerxun Depression of Hailaer Basin[J].Global Geology,2012,31(4):748-752.
[7]马常春,王建强,孙晶,等.长岭断陷构造演化与成藏期研究[J].世界地质,2013,32(2):305-315.MA Chang-chun,WANG Jian-qiang,SUN Jing,et al.Tectonic evolution and the relationship with oil-gas reservoir forming period of Changling fault depression[J].Global Geology,2013,32(2):305-315.
[8]肖冬生.渤海湾盆地南堡凹陷下古生界潜山地层及其储盖组合[J].天然气地球科学,2012,23(1):68-73.XIAO Dong-sheng.Lower Paleozonic burial stratigraphy and reservoir-cap assemblages in Nanpu Sag,Bohai Bay Basin[J].Natural Gas Geoscience,2012,23(1):68-73.
[9]王拥军,张宝民,王政军,等.渤海湾盆地南堡凹陷奥陶系潜山油气地质特征与成藏主控因素[J].天然气地球科学,2012,23(1):51-59.WANG Yong-jun,ZHANG Bao-min,WANG Zheng-jun,et al.Geological characteristics of Ordovician buried hill and main factors of oil/gas accumulation[J].Natural Gas Geoscience,2012,23(1):51-59.
[10]郑红菊,董月霞,王旭东,等.渤海湾盆地南堡富油气凹陷烃源岩的形成及其特征[J].天然气地球科学,2007,18(1):78-83.ZHENG Hong-ju,DONG Yue-xia,WANG Xu-dong,et al.The generation and characteristics of source rocks in Nanpu oil-rich depression,Bohai Bay Basin[J].Natural Gas Geoscience,2007,18(1):78-83.
[11]朱光有,张水昌,王拥军,等.渤海湾盆地南堡大油田的形成条件与富集机制[J].地质学报,2011,85(1):93-113.ZHU Guang-you,ZHANG Shui-chang,WANG Yongjun,et al.Forming condition and enrichment mechanism of the Nanpu oilfield in the Bohai Bay Basin,China[J].Acta Geologica Sinica,2011,85(1):93-113.
[12]刘翠琴,刘艳明.南堡凹陷火山岩与油气藏的关系[J].石油天然气学报,2005,27(5):702-703.LIU Cui-qin,LIU Yan-ming.The relationship between volcanic rock and reservoir[J].Journal of Oil and Gas,2005,27(5):702-703.
[13]林正良,王华,姜华,等.南堡凹陷馆陶组火山事件及其油气地质意义[J].海洋地质与第四纪地质,2011,31(3):79-85.LIN Zheng-liang,WANG Hua,JIANG Hua,et al.Volcanic events at the stage of Guantao Formation in Nanpu Sag and its petroleum geological significance[J].Marine Geology&Quaternary Geology,2011,31(3):79-85.
[14]王拥军,张宝民,董月霞,等.南堡凹陷奥陶系潜山岩溶塌陷体识别、储层特征及油气勘探前景[J].石油学报,2012,33(4):570-580.WANG Yong-jun,ZHANG Bao-min,DONG Yue-xia,et al.Identification,reservoir characteristics and hydrocarbon exploration prospect of karstic collapsed systems of Ordovician buried hills in Nanpu Sag,Bohai Bay Basin[J].Acta Petrolei Sinica,2012,33(4):570-580.
[15]成永生,陈松岭,王海,等.南堡凹陷周边寒武-奥陶系碳酸盐岩储层特征及成岩作用[J].地质找矿论丛,2008,23(3):230-235.CHENG Yong-sheng,CHEN Song-ling,WANG hai,et al.Features and diagenesis of Cambrian--Ordovician carbonate in peripheral of Nanpu Sag[J].Contributions to Geology and Mineral Resources Research,2008,23(3):230-235.
[16]李静,查明.基于流体包裹体的任丘油田雾迷山组成藏期次确定与古压力恢复[J].中国石油大学学报:自然科学版,2010,34(4):38-43.LI Jing,ZHA Ming.Determination of oil accumulation period and building up of paleopressure of Wunishan Formation in Renqiu Oilfield by using fluid inclusion[J].Journal of China University of Petroleum:Edition of Natural Science,2010,34(4):38-43.
[17]郑卉,白玉彬,郝孝荣,等.鄂尔多斯盆地安塞地区长9油层组流体包裹体特征与成藏时间[J].岩性油气藏,2013,25(6):79-83.ZHENG Hui,BAI Yu-bin,HAO Xiao-rong,et al.Characteristics of fluid inclusion and accumulation period of Chang 9 oil reservoir set in Ansai area,Ordos Basin[J].Lithologic Reservoirs,2013,25(6):79-83.
[18]孙玉梅,席小应,黄正吉.流体包裹体分析技术在渤中25-1油田油气充注史研究中的应用[J].中国海相油气(地质),2002,16(4):238-244.SUN Yu-mei,XI Xiao-ying,HUANG Zheng-ji.Studying hydrocarbon charge history in Bozhong 25-1 oilfield by fluid inclusion technique[J].China Offshore Oil and Gas(Geology),2002,16(4):238-244.
[19]周海民,魏忠文,曹中宏,等.南堡凹陷的形成演化与油气的关系[J].石油与天然气地质,2000,21(4):345-349.ZHOU Hai-min,WEI Zhong-wen,CAO Zhong-hong,et al.Relationship between formation,evolution and hydrocarbon in Nanpu Sag[J].Oil&Gas Geology,2000,21(4):345-349.
[20]成永生,陈松岭.渤海湾盆地南堡凹陷外围古生界油气成藏研究[J].地质找矿论丛,2008,23(4):330-338.CHENG Yong-sheng,CHEN Song-ling.Study on the Paleozoic hydrocarbon pool forming in peripheral of Nanpu Sag,Bohai Bay Basin[J].Contributions to Geology and Mineral Resources Research,2008,23(4):330-338.