鄂尔多斯盆地靖边油田西部延9原油地球化学特征与油源

张海; 雷华伟; 张涛; 白玉彬

doi:10.11781/sysydz201806836

鄂尔多斯盆地靖边油田西部延9原油地球化学特征与油源

doi: 10.11781/sysydz201806836

张海^1,2,
雷华伟¹,
张涛¹,
白玉彬^3, ,

1. 延长油田股份有限公司靖边采油厂, 陕西榆林 718500;
2. 西南石油大学地球科学与技术学院, 成都 610500;
3. 西安石油大学地球科学与工程学院, 西安 710065

基金项目:

陕西省自然科学基础研究计划资助项目（2017JM4014）和陕西省教育厅科研计划项目（18JS090）共同资助。

详细信息

作者简介:
张海(1982-),男,硕士,高级工程师,从事油田勘探开发工作。E-mail:403837370qq.com。

通讯作者:
白玉彬(1981-),男,博士,副教授,从事致密油形成机理与富集规律研究。E-mail:baiyubin@xsyu.edu.cn。

中图分类号: TE122.11
计量
- 文章访问数: 1493
- HTML全文浏览量: 150
- PDF下载量: 121
- 被引次数: 0
出版历程
- 收稿日期: 2018-04-16
- 修回日期: 2018-09-06
- 刊出日期: 2018-11-28

Geochemical characteristics of Yan 9 crude oil and oil-source correlation in western Jingbian Oil Field, Ordos Basin

ZHANG Hai^1,2,
LEI Huawei¹,
ZHANG Tao¹,
BAI Yubin^{3
, ,}

1. Jingbian Oil Production, Yanchang Oil Field Corporation, Yulin, Shaanxi 718500, China;
2. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
3. School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710065, China

摘要

摘要: 为了明确靖边油田西部延9油藏石油的来源，采用原油物性、族组成、饱和烃色谱及色谱-质谱等方法，分析了延9原油地球化学特征，通过对比本区长7烃源岩与湖盆中心志丹地区长7烃源岩地球化学特征，结合区域地质背景研究了延9油藏石油的来源。结果表明，延9原油饱和烃含量均在60%以上，正构烷烃单峰分布，主峰碳主要以C₂₁为主；生物标志物中C₃₀藿烷占优势，其次为C₂₉藿烷，规则甾烷以C₂₉为主，C₂₇和C₂₈含量相似，呈不对称“V”字型分布。延9原油地球化学特征相似，具有统一的物质来源和演化程度，为淡水条件下弱氧化-还原环境形成的成熟原油。油源对比表明，靖边油田本地长7烃源岩与延9原油具有明显的亲缘关系，延长组沉积时期位于湖盆中心的志丹地区长7烃源岩地化特征与延9原油差异明显。延9油藏的形成主要为本地区长7烃源岩成熟后，经叠置砂体及裂缝系统输导，主要经垂向运移至延9储层，再经过短距离侧向运移至圈闭聚集成藏。
- 地球化学特征 /
- 延9原油 /
- 长7烃源岩 /
- 油源对比 /
- 靖边油田 /
- 鄂尔多斯盆地
Abstract: The geochemical characteristics of the Yan 9 reservoir were analyzed by means of petrophysical properties, hydrocarbon group composition, saturated hydrocarbon chromatography and gas chromatography-mass spectrometry in order to clarify the source of oil in the Yan 9 reservoir in the west of Jingbian Oil Field. The geochemical characteristics of Chang 7 source rocks in the study area and the Zhidan area were compared, and the source of Yan 9 oil was studied in combination with regional geological background. The results showed that the saturated hydrocarbon content of Yan 9 crude oil is above 60%, and the n-alkanes are distributed with a single mode with C₂₁ as the main carbon peak, C₃₀ hopane as the dominant biomarker, followed by C₂₉ hopane. Regular steroids are mainly C₂₉, while C₂₇ and C₂₈ are similar, showing an asymmetric "V" distribution. The Yan 9 crude oil has similar geochemical characteristics and unified material source and evolution degree. It is a mature crude oil derived from a source deposited in a weak oxidation-reduction environment under freshwater conditions. Oil-source correlation showed that the source rocks of the Chang 7 reservoir in the Jingbian Oil Field are related to the Yan 9 crude oil, and the geochemical characteristics of the Chang 7 source rocks in the Zhidan area, which is located in the center of the lacustrine basin, are obviously different from the Yan 9 crude oil. The formation of Yan 9 oil is mainly due to the maturation of Chang 7 source rocks in this area. The oils were transported by superimposed sand bodies and fracture systems, migrated vertically to the Yan 9 reservoir, and then migrated laterally to traps for accumulation.
- crude oil geochemistry /
- Yan 9 crude oil /
- Chang 7 source rock /
- oil-source correlation /
- Jingbian Oil Field /
- Ordos Basin

HTML全文

参考文献(21)

[1]	郭艳琴,李文厚,陈全红,等.鄂尔多斯盆地安塞-富县地区延长组-延安组原油地球化学特征及油源对比[J].石油与天然气地质,2006,27(2):218-224. GUO Yanqin,LI Wenhou,CHEN Quanhong,et al.Geochemical behaviors of oil and oil-source correlation in Yanchang-Yan'an formations in Ansai-Fuxian area,Ordos Basin[J].Oil & Gas Geology,2006,27(2):218-224.
[2]	刘显阳,惠潇,李士祥.鄂尔多斯盆地中生界低渗透岩性油藏形成规律综述[J].沉积学报,2012,30(5):964-974. LIU Xianyang,HUI Xiao,LI Shixiang.Summary of formation rule for low permeability lithologic reservoir of Mesozoic in Ordos Basin[J].Acta Sedimentologica Sinica,2012,30(5):964-974.
[3]	段毅,张胜斌,郑朝阳,等.鄂尔多斯盆地马岭油田延安组原油成因研究[J].地质学报,2007,81(10):1407-1415. DUAN Yi,ZHANG Shengbin,ZHENG Zhaoyang,et al.Study on genesis of crude oil in the Yan'an Formation of the Maling Oilfield,Ordos Basin[J].Acta Geologica Sinica,2007,81(10):1407-1415.
[4]	兰朝利,王建国,周晓峰,等.鄂尔多斯盆地彭阳油田侏罗系延安组油藏成藏规律[J].油气地质与采收率,2014,21(5):45-48. LAN Chaoli,WANG Jianguo,ZHOU Xiaofeng,et al.Hydrocarbon accumulation rules of sandstone reservoirs of Jurassic Yan'an Formation,Penyang Oilfield of Ordos Basin,China[J].Petro-leum Geology and Recovery Efficiency,2014,21(5):45-48.
[5]	邢蓝田,徐丽,赵阳,等.鄂尔多斯盆地林镇地区延安组油气成藏规律[J].特种油气藏,2016,23(2):14-17. XING Lantian,XU Li,ZHAO Yang,et al.Hydrocarbon accumulation of Linzhen Yanan Formation in Ordos Basin[J].Special Oil and Gas Reservoirs,2016,23(2):14-17.
[6]	郭凯.鄂尔多斯盆地陇东地区长7段有效烃源岩及生排烃研究[J].石油实验地质,2017,39(1):15-23. GUO Kai.Active source rocks of Chang 7 member and hydrocarbon generation and expulsion characteristics in Longdong area,Ordos Basin[J].Petroleum Geology & Experiment,2017,39(1):15-23.
[7]	马芳侠,李耀华,葛云锦,等.鄂尔多斯盆地延长组致密油有效烃源岩评价[J].特种油气藏,2017,24(5):37-41. MA Fangxia,LI Yaohua,GE Yunjin,et al.Evaluation on effective source rock of tight oil in Yanchang Formation,Ordos Basin[J].Special Oil & Gas Reservoirs,2017,24(5):37-41.
[8]	白玉彬,赵靖舟,方朝强,等.优质烃源岩对鄂尔多斯盆地延长组石油聚集的控制作用[J].西安石油大学学报(自然科学版),2012,27(2):1-5. BAI Yubin,ZHAO Jingzhou,FANG Chaoqiang,et al.Control effect of high-quality source rocks on petroleum accumulation in Yanchang Formation,Ordos Basin[J].Journal of Xi'an Shiyou University (Natural Science Edition),2012,27(2):1-5.
[9]	赵靖舟,白玉彬,郑卉,等.靖边油田西南部地区延9、长2、长4+5、长6油藏综合地质研究[R].西安:西安石油大学,2014:124-134. ZHAO Jingzhou,BAI Yubin,ZHENG Hui,et al.Comprehensive geological study of Yan 9,Chang 2,Chang 4+5 and Chang 6 reservoirs in southwestern Jingbian Oilfield[R]. Xi'an:Xi'an Shiyou University,2014:124-134.
[10]	白玉彬,高振东,李忠锋,等.鄂尔多斯盆地杏子川油田延长组原油地球化学特征与油源探讨[J].石油实验地质,2013,35(5):552-558. BAI Yubin,GAO Zhendong,LI Zhongfeng,et al.Geochemical characteristics of crude oil and oil-source correlation in Yanchang Formation in Xingzichuan Oilfield,Ordos Basin[J].Petroleum Geology & Experiment,2013,35(5):552-558.
[11]	HANSON A D,ZHANG S C,MOLDOWAN J M,et al.Molecular organic geochemistry of the Tarim Basin,Northwest China[J].AAPG Bulletin,2000,84(8):1109-1128.
[12]	柳广弟.石油地质学[M].4版.北京:石油工业出版社,2009:162-164. LIU Guangdi.Petroleum geology[M].4th ed.Beijing:Petroleum Industry Press,2009:162-164.
[13]	PETERS K E,WALTERS C C,MOLDOWAN J M.The Biomarker guide(volume 2):biomarkers and isotopes in petroleum exploration and earth history[M].Cambridge:Cambridge University Press,2005:1-184.
[14]	SEIFERT W K,MOLDOWAN J M.The effect of thermal stress on source-rock quality as measured by hopane stereochemistry[J].Physics and Chemistry of the Earth,1980,12:229-237.
[15]	SEIFERT W K,MOLDOWAN J M.Use of biological markers in petroleum exploration[M]//JOHNS R B.Methods in geochemistry and geophysics.New York:Elsevier,1986:261-290.
[16]	HUANG Difan,LI Jinchao,ZHANG Dajiang,et al.Maturation sequence of Tertiary crude oils in the Qaidam Basin and its significance in petroleum resource assessment[J].Journal of Southeast Asian Earth Science,1991,5(1/4):359-366.
[17]	黄第藩,张大江,李晋超.论4-甲基甾烷和孕甾烷的成因[J].石油勘探与开发,1989(3):8-15. HUANG Difan,ZHANG Dajiang,LI Jinchao.On origin of 4-methyl steranes and pregnanes[J].Petroleum Exploration and Development,1989(3):8-15.
[18]	MACKENZIE A S,RULLKOTTER J,WELTE D H,et al.Reconstruction of oil formation and accumulation in North Slope,Alaska,using quantitative gas chromatography-mass spectrometry[C]//Alaska North Slope oil-rock correlation study.Tulsa:American Association of Petroleum Geologists,1985:77.
[19]	郭正权,张立荣,楚美娟,等.鄂尔多斯盆地南部前侏罗纪古地貌对延安组下部油藏的控制作用[J].古地理学报,2008,10(1):63-71. GUO Zhengquan,ZHANG Lirong,CHU Meijuan,et al.Pre-Jurassic palaeogeomorphic control on the hydrocarbon accumulation in the Lower Yan'an Formation in southern Ordos Basin[J].Journal of Palaeogeography,2008,10(1):63-71.
[20]	郑卉.靖边油田南部延9油藏石油富集规律研究[D].西安:西安石油大学,2014:38-54. ZHENG Hui.Study on the enrichment regularity of Yan-9 oil reservoir in southern Jingbian Oilfield[D].Xi'an:Xi'an Shiyou University,2014:38-54.
[21]	白玉彬.鄂尔多斯盆地长7致密油成藏机理与富集规律[M].北京:石油工业出版社,2014. BAI Yubin.Accumulation mechanism and enrichment rules of Chang 7 tight oil in Ordos Basin[M].Beijing:Petroleum Industry Press,2014.