利用流体历史分析技术研究渤海海域黄河口凹陷北部陡坡带油气成藏过程
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摘要
基于流体历史分析技术的成藏过程反演对含油气系统的持续勘探具有重要意义。应用包裹体岩相学、均一温度、储层定量荧光等技术和方法,对渤海海域黄河口凹陷北部陡坡带沙河街组储层中的流体包裹体进行了深入研究,在此基础上,剖析了油水界面变迁,再结合生烃史和有机地球化学资料研究了北部陡坡带沙河街组储层的油气成藏史。结果显示,黄河口凹陷北部陡坡带具有2期源自沙河街组烃源岩的油气充注,第Ⅰ期充注时间为7 Ma,表现为褐色低熟的轻-中质单一液相烃类包裹体;第Ⅱ期开始于2 Ma,沙河街组烃源岩大量生烃,表现为浅蓝色荧光的中质气液两相烃类包裹体,为主要成藏期。储层定量荧光样品光谱峰大多体现古油层荧光光谱特征,油藏规模较大,后期由于构造活动油藏泄漏,形成现今3 885 m典型的油水界面。黄河口凹陷北部陡坡带的构造活动与烃源岩生排烃史的时间匹配决定了研究区两期充注,后期为主的成藏特点。新构造运动后期,古油藏规模减小,形成了现今油藏格局。
Hydrocarbon accumulation process obtained from fluid history analysis techniques is of great significance to the continuous exploration of petroleum system. Based on the observation of reservoir petrography,homogeneous temperature and quantitative grain fluorescence technique,the fluid inclusion characteristics,oil-water interface and charging history of northern steep slope belt of Huanghekou Sag were studied comprehensively,combined with hydrocarbon geochemical analysis and burial history reconstruction. The results show that there are two period hydrocarbon accumulations from the source rocks of the Shahejie Formation. The beginning of the first phase of hydrocarbon accumulation is about 7 Ma,represent by brown colors and single liquid phase hydrocarbon inclusion and without fluorescence,low maturity and light-medium density. The second stage of hydrocarbon charging represented as gas-liquid two phase hydrocarbon inclusions,medium density and show pale blue fluorescence colors,which is the main hydrocarbon charging phase of northern steep slope belt of Huanghekou Sag. The quantitative grain fluorescence (QGF) index of most quantitative grain fluorescence samples are greater than 4 which shows large scale reservoir,while the palaeo-oil zones leaked recently and the oil-water interface down to 3 885 m by quantitative grain fluorescence on extract (QGF-E) data. The tectonic evolution background of steep slope zone in the north of huanghekou sag controls the evolution characteristics of hydrocarbon source rocks to some extent. The characteristics of charging history of study area is two periods of filling,mainly the at late stage and adjusted recently,which determined by the matching of tectonic activity period and hydrocarbon generation and expulsion history.
Hydrocarbon accumulation process obtained from fluid history analysis techniques is of great significance to the continuous exploration of petroleum system. Based on the observation of reservoir petrography,homogeneous temperature and quantitative grain fluorescence technique,the fluid inclusion characteristics,oil-water interface and charging history of northern steep slope belt of Huanghekou Sag were studied comprehensively,combined with hydrocarbon geochemical analysis and burial history reconstruction. The results show that there are two period hydrocarbon accumulations from the source rocks of the Shahejie Formation. The beginning of the first phase of hydrocarbon accumulation is about 7 Ma,represent by brown colors and single liquid phase hydrocarbon inclusion and without fluorescence,low maturity and light-medium density. The second stage of hydrocarbon charging represented as gas-liquid two phase hydrocarbon inclusions,medium density and show pale blue fluorescence colors,which is the main hydrocarbon charging phase of northern steep slope belt of Huanghekou Sag. The quantitative grain fluorescence (QGF) index of most quantitative grain fluorescence samples are greater than 4 which shows large scale reservoir,while the palaeo-oil zones leaked recently and the oil-water interface down to 3 885 m by quantitative grain fluorescence on extract (QGF-E) data. The tectonic evolution background of steep slope zone in the north of huanghekou sag controls the evolution characteristics of hydrocarbon source rocks to some extent. The characteristics of charging history of study area is two periods of filling,mainly the at late stage and adjusted recently,which determined by the matching of tectonic activity period and hydrocarbon generation and expulsion history.
引文
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13丁湘华.准噶尔盆地东道海子凹陷油气成因及成藏期次分析[J].科学技术与工程,2016,16(10):80-84Ding Xianghua.Analysis of hydrocarbon genesis and accumulation stage of Dongdaohaizi Sag in Junggar Basin[J].Science Technology and Engineering,2016,16(10):80-84
14 Liu K Y,Peter E.Quantitative fluorescence techniques for detecting residual oils and reconstructing hydrocarbon charge history[J].Organic Geochemistry,2005,36(7):1023-1036
15 Liu K Y,George S C,Lu X S,et al.Innovative fluorescence spectroscopic techniques for rapidly characterising oil inclusions[J].Organic Geochemistry,2014,72:34-45
16张如才,彭文绪,王德英,等.黄河口凹陷油气勘探潜力分析[J].石油地质与工程,2009,23(2):9-13Zhang Rucai,Peng Wenxu,Wang Deying,et al.Analysis on potential of hydrocarbon exploration in Huanghekou depression[J].Petroleum Geology and Engineering,2009,23(2):9-13
17郝鹏,王波,齐玉民,等.储层定量荧光技术在渤海海域致密储层流体识别中的应用---以黄河口凹陷BZ-A构造为例[J].海洋地质前沿,2017,33(11):60-66Hao Peng,Wang Bo,Qi Yumin,et al.Application of quantitative grain fluorescence thchnique to fluid identification in tight reservoir-a case study on structure BZ-A in Huanghekou Sag[J].Marine Geology Frontiers,2017,33(11):60-66
18孙波,唐东,李小梅,等.渤海湾盆地南堡凹陷烃源岩生烃演化及油气来源[J].科学技术与工程,2015,15(19):67-73Sun Bo,Tang Dong,Li Xiaomei,et al.Hydrocarbon-generation evolution of source rock and oil-gas source in nanpu depression,Bohai Bay Basin[J].Science Technology and Engineering,2015,15(19):67-73
19桂丽黎,刘可禹,柳少波,等.柴达木盆地西部英东地区油气成藏过程[J].地球科学,2015,40(5):890-899Gui Lili,Liu Keyu,Liu Shaobo,et al.Hydrocarbon charge history of Yingdong Oilfield,Western Qaidam Basin[J].Earth Science,2015,40(5):890-899
20任拥军,卢宁宁,邱隆伟.大王北洼陷精细油源对比[J].吉林大学学报(地球科学版),2010,40(4):921-931Ren Yongjun,Lu Ningning,Qiu Longwei,et al.Oil-source rock correlation in Dawangbei Sag[J].Journal of Jilin University(Earth Science Edition),2010,40(4):921-931
2陈延芳,刘士磊,宋章强,等.渤海中深部碎屑岩有效储层划分及勘探意义---以黄河口凹陷为例[J].断块油气田,2012,19(6):710-713Chen Yanfang,Liu Shilei,Song Zhangqiang,et al.Division and exploration significance of valid reservoir with mid-deep clastic rock in Bohai Sea:taking Huanghekou Sag as an example[J].Fault-Block Oil&Gas Field,2012,19(6):710-713
3强昆生,吕修祥,周心怀,等.渤海海域黄河口凹陷油气成藏条件及其分布特征[J].现代地质,2012,26(4):792-800Qiang Kunsheng,Lu Xiuxiang,Zhou Xinhuai,et al.Accumulative conditions and distribution characteristics of hydrocarbon in Huanghekou depression,offshore Bohai Bay Basin[J].Geoscience,2012,26(4):792-800
4田立新,余宏忠,周心怀,等.黄河口凹陷油气成藏的主控因素[J].新疆石油地质,2009,30(3):319-321Tian Lixin,Yu Hongzhong,Zhou Xinhuai,et al.Major control factors of petroleum accumulation in Huanghekou Sag[J].Xinjiang Petroleum Geology,2009,30(3):319-321
5孙和风,周心怀,彭文绪,等.渤海南部黄河口凹陷晚期成藏特征及富集模式[J].石油勘探与开发,2011,38(3):15-16Sun Hefeng,Zhou Xinhuai,Peng Wenxu,et al.Late-stage hydrocarbon accumulation and enrichment in the Huanghekou Sag,southern Bohai Sea[J].Petroleum Exploration and Development,2011,38(3):15-16
6陈斌,邓运华,郝芳,等.黄河口凹陷BZ34断裂带油气晚期快速成藏模式[J].石油学报,2006,27(1):37-41Chen Bin,Deng Yunhua,Hao Fang,et al.Late-stage rapid petroleum accumulation model of BZ34fault zone in Huanghekou Sag[J].Acta Petrolei Sinica,2006,27(1):37-41
7 Bodnar R J.Systematics of stretching of fluid inclusions I:fluorite and sphalerite at 1 atmosphere confining pressure[J].Economic Geology,1984,79(1):141-161
8 George S C,Volk H,Ahmed M.Geochemical analysis techniques and geological applications of oil-bearing fluid inclusions,with some Australian case studies[J].Journal of Petroleum Science&Engineering,2007,57(1):119-138
9刘可禹,鲁雪松,桂丽黎,等.储层定量荧光技术及其在油气成藏研究中的应用[J]地球科学-中国地质大学学报,2016,41(3):373-384Liu Keyu,Lu Xuesong,Gui Lili,et al.Quantitative fluorescence techniques and their applications in hydrocarbon accumulation studies[J].Earth Science,2016,41(3):373-384
10刘可禹,Julien Bourdet,张宝收,等.应用流体包裹体研究油气成藏---以塔中奥陶系储集层为例[J].石油勘探与开发,2013,40(2):171-180Liu Keyu,Julien Bourdet,Zhang Baoshou,et al.Hydrocarbon charge history of the Tazhong Ordovician reservoirs,Tarim Basin as revealed from an integrated fluid inclusion study[J].Petroleum Exploration and Development,2013,40(2):171-180
11王琳,吴海,王科,等.柴达木盆地西部扎哈泉地区油气成藏过程[J].科学技术与工程,2017,17(34):202-209Wang Lin,Wu Hai,Wang Ke,et al.Hydrocarbon charge history of Zhahaquan area,Western Qaidam Basin[J].Science Technology and Engineering,2017,17(34):202-209
12齐雯,潘建国,王国栋,等.准噶尔盆地玛湖凹陷斜坡区百口泉组储层流体包裹体特征及油气充注史[J].天然气地球科学,2015,26(增刊1):64-71Qi Wen,Pan Jianguo,Wang Guodong,et al.Fluid inclusion and hydrocarbon charge history for the reservoir of Baikouquan Formation in the Mahu Sag,Junggar Basin[J].Natural Gas Geoscience,2015,26(S1):64-71
13丁湘华.准噶尔盆地东道海子凹陷油气成因及成藏期次分析[J].科学技术与工程,2016,16(10):80-84Ding Xianghua.Analysis of hydrocarbon genesis and accumulation stage of Dongdaohaizi Sag in Junggar Basin[J].Science Technology and Engineering,2016,16(10):80-84
14 Liu K Y,Peter E.Quantitative fluorescence techniques for detecting residual oils and reconstructing hydrocarbon charge history[J].Organic Geochemistry,2005,36(7):1023-1036
15 Liu K Y,George S C,Lu X S,et al.Innovative fluorescence spectroscopic techniques for rapidly characterising oil inclusions[J].Organic Geochemistry,2014,72:34-45
16张如才,彭文绪,王德英,等.黄河口凹陷油气勘探潜力分析[J].石油地质与工程,2009,23(2):9-13Zhang Rucai,Peng Wenxu,Wang Deying,et al.Analysis on potential of hydrocarbon exploration in Huanghekou depression[J].Petroleum Geology and Engineering,2009,23(2):9-13
17郝鹏,王波,齐玉民,等.储层定量荧光技术在渤海海域致密储层流体识别中的应用---以黄河口凹陷BZ-A构造为例[J].海洋地质前沿,2017,33(11):60-66Hao Peng,Wang Bo,Qi Yumin,et al.Application of quantitative grain fluorescence thchnique to fluid identification in tight reservoir-a case study on structure BZ-A in Huanghekou Sag[J].Marine Geology Frontiers,2017,33(11):60-66
18孙波,唐东,李小梅,等.渤海湾盆地南堡凹陷烃源岩生烃演化及油气来源[J].科学技术与工程,2015,15(19):67-73Sun Bo,Tang Dong,Li Xiaomei,et al.Hydrocarbon-generation evolution of source rock and oil-gas source in nanpu depression,Bohai Bay Basin[J].Science Technology and Engineering,2015,15(19):67-73
19桂丽黎,刘可禹,柳少波,等.柴达木盆地西部英东地区油气成藏过程[J].地球科学,2015,40(5):890-899Gui Lili,Liu Keyu,Liu Shaobo,et al.Hydrocarbon charge history of Yingdong Oilfield,Western Qaidam Basin[J].Earth Science,2015,40(5):890-899
20任拥军,卢宁宁,邱隆伟.大王北洼陷精细油源对比[J].吉林大学学报(地球科学版),2010,40(4):921-931Ren Yongjun,Lu Ningning,Qiu Longwei,et al.Oil-source rock correlation in Dawangbei Sag[J].Journal of Jilin University(Earth Science Edition),2010,40(4):921-931