渤海湾盆地渤中凹陷渤中19-6构造凝析油气特征与形成机制

doi:10.7623/syxb202004003

摘要
图/表
参考文献(0)
相关文章 (15)

全文: PDF (1156 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要

基于凝析油和天然气组分、生物标志化合物、稳定碳同位素和储层流体包裹体等分析结果，综合运用多种油气地球化学方法，明确了渤海湾盆地渤中凹陷西南部渤中19-6构造中凝析油和天然气的特征及成因，探讨了油气的形成机制。研究结果表明，渤中19-6构造的凝析油具有低密度、低黏度、低胶质+沥青质、高蜡和高凝固点的物性特征，其正构烷烃以中-高碳数为主，轻烃组分以正辛烷、正庚烷和甲基环己烷为主且含量相当，为沙河街组三段烃源岩成熟阶段的产物。天然气组分主要为烃类气，非烃气体含量低，为沙河街组三段偏腐殖型烃源岩裂解气。12 Ma以来，渤中19-6构造经历了重质油、轻质油气、凝析油气和天然气的多幕连续充注。相控混溶为渤中19-6构造中凝析气的主要形成机制，即在含原油的天然气流体中，当地下温度、压力升高时，早期原油溶于晚期充注的天然气中，形成现今的凝析气藏。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	胡安文
	牛成民
	王德英
	李慧勇
	叶涛
	许鹏

关键词 ：凝析油, 天然气, 相控混溶, 凝析气藏, 渤中19-6构造, 渤中凹陷, 渤海湾盆地

Abstract：

Based on the analysis results of condensate oil and gas components, biomarkers, stable carbon isotopes and fluid inclusions, compressively using mulitple research methods of petroleum geochemistry, this paper determines the characteristics and genisis of condensate oil and gas and explores the oil-gas formation mechanism in Bozhong19-6 structure, southwestern Bozhong sag, Bohai Bay Basin. The results show that the condensate oil has physical properties of low density, low viscosity, low colloid and asphaltene, high wax and high freezing point. In the condensate oil, n-alkanes are mainly composed of medium and high carbon components, and light hydrocarbon components are dominated by the n-octane, n-heptane and methylcyclohexane with the same contents. The condensate oil is the product of mature source rocks in Member 3 of Shahejie Formation. The natural gas is mainly composed of hydrocarbon gas with low content of non-hydrocarbon gas and derived from the cracking of humic-type source rocks in Member 3 of Shahejie Formation. The Bozhong19-6 structure has experienced multi-stage continuous charging of heavy oil, light oil, condensate oil or gas, and natural gas since 12Ma. The phase-controlled miscibility is the main formation mechanism of condensate gas in Bozhong19-6 structure. In the natural gas fluid containing crude oil, the early crude oil dissolves in the later charging natural gas with the increase of underground temperature and pressure, thus forming the present condensate gas reservoir.

Key words： condensate oil natural gas phase-controlled miscibility gas condensate reservoir Bozhong19-6 structure Bozhong sag Bohai Bay Basin

收稿日期: 2019-06-24

中图分类号:

TE122.1

基金资助:

国家科技重大专项"渤海海域勘探新领域及关键技术研究"（2016ZX05024-003）资助。

通讯作者: 胡安文,男,1989年11月生,2011年获东北石油大学学士学位,2014年获东北石油大学硕士学位,现为中海石油(中国)有限公司天津分公司渤海石油研究院勘探地质工程师,主要从事油气地球化学与石油地质综合研究。Email:827578022@qq.com E-mail: 827578022@qq.com

作者简介: 胡安文,男,1989年11月生,2011年获东北石油大学学士学位,2014年获东北石油大学硕士学位,现为中海石油(中国)有限公司天津分公司渤海石油研究院勘探地质工程师,主要从事油气地球化学与石油地质综合研究。Email:827578022@qq.com

引用本文:

胡安文, 牛成民, 王德英, 李慧勇, 叶涛, 许鹏. 渤海湾盆地渤中凹陷渤中19-6构造凝析油气特征与形成机制[J]. 石油学报, 2020, 41(4): 403-411.
Hu Anwen, Niu Chengmin, Wang Deying, Li Huiyong, Ye Tao, Xu Peng. The characteristics and formation mechanism of condensate oil and gas in Bozhong19-6 structure, Bozhong sag, Bohai Bay Basin[J]. Acta Petrolei Sinica, 2020, 41(4): 403-411.

链接本文:

http://www.syxb-cps.com.cn/CN/10.7623/syxb202004003 或 http://www.syxb-cps.com.cn/CN/Y2020/V41/I4/403

[1]	滕长宇,邹华耀,郝芳.渤海湾盆地构造差异演化与油气差异富集[J].中国科学:地球科学,2014,44(4):579-590.
	TENG Changyu,ZOU Huayao,HAO Fang.Control of differential tectonic evolution on petroleum occurrence in Bohai Bay Basin[J].Science China Earth Sciences,2014,57(5):1117-1128.
[2]	滕长宇,邹华耀,郝芳,等.渤海海域天然气保存条件与分布特征[J].天然气地球科学,2015,26(1):71-80.
	TENG Changyu,ZOU Huayao,HAO Fang,et al.Preservation condition and occurrence of the gas pools in the Bohai Bay area[J].Natural Gas Geoscience,2015,26(1):71-80.
[3]	谢玉洪,张功成,沈朴,等.渤海湾盆地渤中凹陷大气田形成条件与勘探方向[J].石油学报,2018,39(11):1199-1210.
	XIE Yuhong,Zhang Gongcheng,SHEN Pu,et al.Formation conditions and exploration direction of large gas field in Bozhong sag of Bohai Bay Basin[J].Acta Petrolei Sinica,2018,39(11):1199-1210.
[4]	邓运华,薛永安,于水,等.浅层油气运聚理论与渤海大油田群的发现[J].石油学报,2017,38(1):1-8.
	DENG Yunhua,XUE Yong'an,YU Shui,et al.Shallow hydrocarbon migration and accumulation theory and discovery of giant oilfield group in Bohai Sea[J].Acta Petrolei Sinica,2017,38(1):1-8.
[5]	薛永安.渤海海域油气运移"汇聚脊"模式及其对新近系油气成藏的控制[J].石油学报,2018,39(9):963-970,1005.
	XUE Yong'an.The "catchment ridge" model of hydrocarbon migration in Bohai Sea and its control on Neogene hydrocarbon accumulation[J].Acta Petrolei Sinica,2018,39(9):963-970,1005.
[6]	薛永安,李慧勇.渤海海域深层太古界变质岩潜山大型凝析气田的发现及其地质意义[J].中国海上油气,2018,30(3):1-9.
	XUE Yong'an,LI Huiyong.Large condensate gas field in deep Archean metamorphic buried hill in Bohai sea:discovery and geological significance[J].China Offshore Oil and Gas,2018,30(3):1-9.
[7]	周心怀,张如才,李慧勇,等.渤海湾盆地渤中凹陷深埋古潜山天然气成藏主控因素探讨[J].中国石油大学学报:自然科学版,2017,41(1):42-50.
	ZHOU Xinhuai,ZHANG Rucai,LI Huiyong,et al.Major controls on natural gas accumulations in deep-buried hills in Bozhong depression,Bohai Bay Basin[J].Journal of China University of Petroleum:Edition of Natural Science,2017,41(1):42-50.
[8]	胡贺伟,李慧勇,于海波,等.渤中21-22构造区断裂演化及其对油气的控制作用[J].东北石油大学学报,2016,40(2):36-46.
	HU Hewei,LI Huiyong,YU Haibo,et al.Fracture evolution of Bozhong 21-22 structure area and their control on hydrocarbons[J].Journal of Northeast Petroleum University,2016,40(2):36-46.
[9]	华晓莉,李慧勇,孙希家,等.渤海湾盆地渤中凹陷西南环古生界沉积微相及其对岩溶储集层的控制作用[J].古地理学报,2017,19(6):83-92.
	HUA Xiaoli,LI Huiyong,SUN Xijia,et al.The Paleozoic sedimentary microfacies and its control on karst reservoir in southwestern Bozhong sag,Bohai Bay Basin[J].Journal of Palaeogeography,2017,19(6):83-92.
[10]	兰蕾,李友川,王柯,等.一组有效区分渤中凹陷烃源岩的生物标志化合物参数[J].石油学报,2019,40(1):35-41.
	LAN Lei,LI Youchuan,WANG Ke,et al.Biomarker parameters for effectively distinguishing source rocks in Bozhong sag[J].Acta Petrolei Sinica,2019,40(1):35-41.
[11]	杨永才,李友川.渤海湾盆地渤中凹陷烃源岩地球化学与分布特征[J].矿物岩石,2012,32(4):65-72.
	YANG Yongcai,LI Youchuan.The geochemical characteristics and distribution of source rocks of the Bozhong sag in the Bohai Bay Basin[J].Journal of Mineralogy and Petrology,2012,32(4):65-72.
[12]	王培荣,张大江,宋孚庆,等.区分渤中坳陷三套烃源岩的地球化学参数组合[J].中国海上油气,2004,16(3):157-160.
	WANG Peirong,ZHANG Dajiang,SONG Fuqing,et al.The comprehensive geochemical parameters for distinguishing three sets of source rock in Bozhong depression[J].China Offshore Oil and Gas,2004,16(3):157-160.
[13]	MANGO F D.An invariance in the isoheptanes of petroleum[J].Science,1987,273(4814):514-517.
[14]	MANGO F D.The origin of light hydrocarbons in petroleum:a kinetic test of the steady-state catalytic hypothesis[J].Geochimica et Cosmochimica Acta,1990,54(5):1315-1323.
[15]	MANGO F D.The origin of light hydrocarbons in petroleum:ring preference in the closure of carbocyclic rings[J].Geochimica et Cosmochimica Acta,1994,58(2):895-901.
[16]	MANGO F D.The light hydrocarbons in petroleum:a critical review[J].Organic Geochemistry,1997,26(7/8):417-440.
[17]	卢双舫,张敏.油气地球化学[M].北京:石油工业出版社,2008:194-197.
	LU Shuangfang,ZHANG Min.Petroleum geochemistry[M].Beijing:Petroleum Industry Press,2008:194-197.
[18]	刚文哲,高岗,郝石生,等.论乙烷碳同位素在天然气成因类型研究中的应用[J].石油实验地质,1997,19(2):164-167.
	GANG Wenzhe,GAO Gang,HAO Shisheng,et al.Carbon isotope of ethane applied in the analyses of genetic types of natural gas[J].Experimental Petroleum Geology,1997,19(2):164-167.
[19]	戴金星,秦胜飞,陶士振,等.中国天然气工业发展趋势和天然气地学理论重要进展[J].天然气地球科学,2005,16(2):127-132.
	DAI Jinxing,QIN Shengfei,TAO Shizhen,et al.Developing trends of natural gas industry and the significant progress on natural gas geological theories in China[J].Natural Gas Geoscience,2005,16(2):127-132.
[20]	谢增业,张本健,杨春龙,等.川西北地区泥盆系天然气沥青地球化学特征及来源示踪[J].石油学报,2018,39(10):1103-1118.
	XIE Zengye,ZHANG Benjian,YANG Chunlong,et al.Geochemical characteristics and source trace of the Devonian natural gas and bitumen in Northwest Sichuan Basin[J].Acta Petrolei Sinica,2018,39(10):1103-1118.
[21]	宋岩,徐永昌.天然气成因类型及其鉴别[J].石油勘探与开发,2005,32(4):24-29.
	SONG Yan,XU Yongchang.Origin and identification of natural gases[J].Petroleum Exploration and Development,2005,32(4):24-29.
[22]	LORANT F,PRINZHOFER A,BEHAR F,et al.Carbon isotopic and molecular constraints on the formation and the expulsion of thermogenic hydrocarbon gases[J].Chemical Geology,1998,147(3/4):249-264.
[23]	戴金星,戚厚发,宋岩.鉴别煤成气和油型气若干指标的初步探讨[J].石油学报,1985,6(2):31-38.
	DAI Jinxing,QI Houfa,SONG Yan.On the indicators for identifying gas from oil and gas from coal measure[J].Acta Petrolei Sinica,1985,6(2):31-38.
[24]	沈平,徐永昌,王先彬,等.气源岩和天然气地球化学特征及成气机理研究[M].兰州:甘肃科学技术出版社,1991.
	SHEN Ping,XU Yongchang,WANG Xianbin,et al.Study on the geochemical characteristics of natural gas and gas source rock,and gas-generating mechanism of source rock[M].Lanzhou:Gansu Science and Technology Press,1991.
[25]	BERNER U,FABER E.Empirical carbon isotope/maturity relationships for gases from algal kerogens and terrigenous organic matter,based on dry,open-system pyrolysis[J].Organic Geochemistry,1996,24(10/11):947-955.
[26]	LARTER S,MILLS N.Phase-controlled molecular fractionations in migrating petroleum charges[M]//ENGLAND W A,FLEET A J.Petroleum Migration.London:The Geological Society of London,1991:137-147.
[27]	THOMPSON K F M.Fractionated aromatic petroleums and the generation of gas-condensates[J].Organic Geochemistry,1987,11(6):573-579.
[28]	THOMPSON K F M.Gas-condensate migration and oil fractionation in deltaic systems[J].Marine and Petroleum Geology,1988,5(3):237-246.
[29]	CURIALE J A,BROMLEY B W.Migration of petroleum into Vermilion 14 field,Gulf Coast,U.S.A.-molecular evidence[J].Organic Geochemistry,1996,24(5):563-579.
[30]	CURIALE J A,BROMLEY B W.Migration induced compositional changes in oils and condensates of a single field[J].Organic Geochemistry,1996,24(12):1097-1113.
[31]	张水昌.运移分馏作用:凝析油和蜡质油形成的一种重要机制[J].科学通报,2000,45(6):667-670.
	ZHANG Shuichang.The migration fractionation:an important mechanism in the formation of condensate and waxy oil[J].Chinese Science Bulletin,2000,45(14):1341-1344.