塔里木盆地顺北油气田不同层系原油地球化学特征对比及成因分析

罗明霞; 夏永涛; 邵小明; 吴鲜

doi:10.11781/sysydz201906849

塔里木盆地顺北油气田不同层系原油地球化学特征对比及成因分析

doi: 10.11781/sysydz201906849

中国石化西北油田分公司勘探开发研究院, 乌鲁木齐 830011

基金项目:

国家科技重大专项"塔里木-鄂尔多斯盆地海相碳酸盐岩层系大中型油气田形成规律与勘探评价"（2017ZX05005-002）资助。

详细信息

作者简介:
罗明霞(1983-),女,硕士,副研究员,从事石油地质研究。E-mail:luomingxia0717@163.com。

中图分类号: TE122.11
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出版历程
- 收稿日期: 2019-06-06
- 修回日期: 2019-09-19
- 刊出日期: 2019-11-28

Geochemical characteristics and origin of oil from different strata in Shunbei oil and gas field, Tarim Basin

Exploration and Production Research Institute of Northwest Oilfield Branch, SINOPEC, Urumqi, Xinjiang 830011, China

摘要

摘要: 塔里木盆地顺北油气田在奥陶系、志留系和白垩系多个层系都可见挥发油-轻质油或油砂。通过地球化学特征对比发现，不同层系的原油（油砂）存在较大差异。根据其成因总体上可以划分为2类：（1）奥陶系和志留系：姥植比较低（Pr/Ph<1），原油族组分及正构烷烃单体烃类的碳同位素偏轻，三环萜烷C₂₁TT/C₂₃TT比值小于1.0，三芴含量中硫芴占绝对优势，均表现为海相腐泥型原油，但两者成熟度略有差异，志留系为成熟油，奥陶系为高熟油；（2）白垩系：姥植比较高（Pr/Ph>1.6），原油碳同位素相对较重，C₂₁TT/C₂₃TT比值大于1.0，C₂₄四环萜烷及C₃₀重排藿烷相对丰度高，表现为陆相原油特征。综合分析，志留系及奥陶系原油来自寒武系烃源岩，为同源不同期的油藏，而白垩系原油可能来自北部库车坳陷陆相烃源岩。
- 生物标志物 /
- 成熟度 /
- 白垩系 /
- 志留系 /
- 奥陶系 /
- 顺北油气田 /
- 塔里木盆地
Abstract: Volatile-light oil or oil sands have been found in the Ordovician, Silurian and Cretaceous strata in Shunbei oil and gas field, Tarim Basin. The geochemical characteristics of oil or oil sands from these strata are obviously different. Generally, they can be divided into two genetic types. (1) Oil in the Ordovician and Silurian:The Pr/Ph value is <1, the carbon isotope of the whole oil and n-alkanes is light, and the C₂₁TT/C₂₃TT ratio is also <1. The dibenzothiophene content is dominant among dibenzothiophene, dibenzofuran and fluorene. These features all indicate that the oil is marine sapropelic. But their maturities are different. Oil is mature in the Silurian and highly mature in the Ordovician. (2) Oil in the Cretaceous:The Pr/Ph value is>1.6, the carbon isotope of the whole oil is relatively heavier, and the C₂₁TT/C₂₃TT ratio is>1. The oil is rich in C₂₄ tetracyclic terpenoids and C₃₀ rearranged hopanes. Thus, they are of continental origin. Altogether, oil in the Ordovician and Silurian strata is from the Cambrian source rocks, which are isogenous and non-synchronous reservoirs. Oil in the Cretaceous strata mainly comes from continental source rocks of the northern Kuche Depression.
- biomarkers /
- maturity /
- Cretaceous /
- Silurian /
- Ordovician /
- Shunbei oil and gas field /
- Tarim Basin

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参考文献(20)

[1]	焦方正.塔里木盆地顺北特深碳酸盐岩断溶体油气藏发现意义与前景[J].石油与天然气地质,2018,39(2):207-216. JIAO Fangzheng.Significance and prospect of ultra-deep carbonate fault-karst reservoirs in Shunbei area,Tarim Basin[J].Oil & Gas Geology,2018,39(2):207-216.
[2]	张厚福,方朝亮,高先志,等.石油地质学[M].北京:石油工业出版社,1999:92-96. ZHANG Houfu,FANG Chaoliang,GAO Xianzhi,et al.Petroleum geology[M].Beijing:Petroleum Industry Press,1999:92-96.
[3]	崔景伟,王铁冠,李美俊,等.塔河油田白垩系原油地化特征与成因类型[J].中国矿业大学学报,2011,40(3):430-437. CUI Jingwei,WANG Tieguan,LI Meijun,et al.Geochemical characteristics and genetic types of Cretaceous oils,Tahe oilfield[J].Journal of China University of Mining & Technology,2011,40(3):430-437.
[4]	刘永立,罗明霞,夏永涛,等.塔河油田塔深3井区奥陶系深层油气成藏的地球化学证据[J].石油实验地质,2017,39(3):377-382. LIU Yongli,LUO Mingxia,XIA Yongtao,et al.Geochemical evidence for hydrocarbon accumulation in deep Ordovician in TS3 well block,Tahe Oil Field[J].Petroleum Geology & Experiment,2017,39(3):377-382.
[5]	侯读杰,张林晔.实用油气地球化学图鉴[M].北京:石油工业出版社,2003:130. HOU Dujie,ZHANG Linye.Practical illustrated handbook of petroleum geochemistry[M].Beijing:Petroleum Industry Press,2003:130.
[6]	王有孝,程学惠,吴贻华,等.原油中类异戊二烯烷烃的地球化学特征[J].石油与天然气地质,1981,2(2):158-168. WANG Youxiao,CHENG Xuehui,WU Yihua,et al.The geochemical characteristics of isoprenoid alkanes in crude oil[J].Oil & Gas Geology,1981,2(2):158-168.
[7]	卢双舫,张敏.油气地球化学[M].北京:石油工业出版社,2008:178-193. LU Shuangfang,ZHANG Min.Petroleum geochemistry[M].Beijing:Petroleum Industry Press,2008:178-193.
[8]	朱扬明,梅博文,傅家谟,等.塔里木原油饱和烃生物标志物分布特征[J].江汉石油学院学报,1997,19(3):24-29. ZHU Yangming,MEI Bowen,FU Jiamo,et al.Distribution characteristics of saturated hydrocarbon biomarkers in oils from Tarim Basin[J].Journal of Jianghan Petroleum Institute,1997,19(3):24-29.
[9]	张斌,崔洁,顾乔元,等.塔北隆起西部复式油气区原油成因与成藏意义[J].石油学报,2010,31(1):55-60. ZHANG Bin,CUI Jie,GU Qiaoyuan,et al.Oil origin classification in composite hydrocarbon accumulation play in the western Tabei Uplift and its geological significance[J].Acta Petrolei Sinica,2010,31(1):55-60.
[10]	李洪波.塔北隆起北缘原油地球化学特征与分布[J].石油天然气学报(江汉石油学院院报),2013,35(4):22-26. LI Hongbo.Geochemical characteristics and distribution of crude oil from northern Tabei Uplift[J].Journal of Oil and Gas Technology (Journal of Jianghan Petroleum Institute),2013,35(4):22-26.
[11]	吕海涛,顾忆,丁勇,等.塔里木盆地西南部皮山北新1井白垩系油气成因[J].石油实验地质,2016,38(1):84-90. LÜ Haitao,GU Yi,DING Yong,et al.Cretaceous petroleum origin in well PSBX1 in the southwestern Tarim Basin[J].Petroleum Geo-logy & Experiment,2016,38(1):84-90.
[12]	朱秀香,陈绪云,曹自成.塔里木盆地顺托果勒低隆起顺托1井区油气成藏模式[J].石油实验地质,2017,39(1):41-49. ZHU Xiuxiang,CHEN Xuyun,CAO Zicheng.Hydrocarbon accumulation mode of Shuntuo 1 well block in the Shuntuoguole lower uplift,Tarim Basin[J].Petroleum Geology & Experiment,2017,39(1):41-49.
[13]	赵孟军,张水昌.17α(H)-重排藿烷在塔里木盆地中的指相意义[J].石油勘探与开发,2001,28(1):36-38. ZHAO Mengjun,ZHANG Shuichang.The special sedimentary facies indicated by 17α(H)-diahopanes in Tarim Basin[J].Petroleum Exploration and Development,2001,28(1):36-38.
[14]	李红磊,张敏,姜连,等.利用芳烃参数研究煤系烃源岩中重排藿烷成因[J].沉积学报,2016,34(1):191-199. LI Honglei,ZHANG Min,JIANG Lian,et al.Application of aromatics on genesis of rearranged hopanes in coal-bearing source rocks[J].Acta Sedimentologica Sinica,2016,34(1):191-199.
[15]	李水福,何生.原油芳烃中三芴系列化合物的环境指示作用[J].地球化学,2008,37(1):45-50. LI Shuifu,HE Sheng.Geochemical characteristics of dibenzothiophene,dibenzofuran and fluorene and their homologues and their environmental indication[J].Geochimica,2008,37(1):45-50.
[16]	程斌,王铁冠,常象春,等.塔北哈6井油砂及沥青砂岩抽提物的地球化学特征及对比[J].石油实验地质,2014,36(6):736-743. CHENG Bin,WANG Tieguan,CHANG Xiangchun,et al.Geochemical characteristics and correlation of extracts from Silurian bituminous sandstones and Carboniferous oil sands in well Ha6,northern Tarim Basin[J].Petroleum Geology & Experiment,2014,36(6):736-743.
[17]	朱光有,杨海军,张斌,等.油气超长运移距离[J].岩石学报,2013,29(9):3192-3212. ZHU Guangyou,YANG Haijun,ZHANG Bin,et al.Ultra-long distance migration of hydrocarbon[J].Acta Petrologica Sinica,2013,29(9):3192-3212.
[18]	李素梅,庞雄奇,郭栋.不同成因类型原油单体烃碳同位素特征及其地球化学意义[C]//王涛,贾承造,庞雄奇,等.第五届油气成藏机理与油气资源评价国际学术研讨会论文集.北京:石油工业出版社,2009:731-739. LI Sumei,PANG Xiongqi,GUO Dong,et al.Carbon isotopic characteristics of monomers of different origin types and its geochemical significance[C]//WANG Tao,JIA Chengzao,PANG Xiongqi,et al.5th International Symposium on Hydrocarbon Accumulation Mechanism and Petroleum Resource Evaluation.Beijing:Petroleum Industry Press,2009:731-739.
[19]	赵孟军,黄第藩.不同沉积环境生成的原油单体烃碳同位素分布特征[J].石油实验地质,1995,17(2):171-179. ZHAO Mengjun,HUANG Difan.Carbon isotopic distributive characteristics of crude oil monomers produced in different sedimentary environments[J].Petroleum Geology & Experiment,1995,17(2):171-179.
[20]	张俊.塔里木库车前陆盆地油源与成藏特征研究[D].北京:中国地质大学,2002:30-35. ZHANG Jun.Study on oil source and characteristics of petroleum accumulation in Kuche Foreland Basin,Tarim[J].Beijing:China University of Geosciences,2002:30-35.