山东东营凹陷八面河油田稠油成因分析

现代地质 ›› 2005, Vol. 19 ›› Issue (2): 279-286.

山东东营凹陷八面河油田稠油成因分析

李春梅¹，李素梅^2,3，李雪⁴，庞雄奇^2,3，王明培⁴

1江汉石油管理局，湖北潜江433100；2中国石油大学油气成藏机理教育部重点实验室，北京102249；
3中国石油大学盆地与油藏研究中心，北京102249；4 江汉石油管理局，山东清河262714

收稿日期:2004-11-24 修回日期:2004-12-31 出版日期:2005-02-20 发布日期:2005-02-20
作者简介:李春梅，女，硕士，1958年出生，石油地质学专业，主要从事油气田勘探开发科研管理工作。
基金资助:
国家重点基础研究“973”项目（G199943310）

Origin of the Heavy Oils from the Bamianhe Oilfield, Dongying Depression

LI Chun-mei¹,LI Su-mei^2,3,LI Xue⁴,PANG Xiong-qi^2,3,WANG Ming-pei⁴

1 Jianghan Oilfield Company Limited , Qianjiang, Hubei 433100, China；
2 Key Laboratory for Hydrocarbon Accumulation，China University of Petroleum， Ministry of Education，
Beijing 102249, China；
3 Basin and Reservoir Research Center,China University of Petroleum, Beijing 102249, China；
4 Jianghan Oilfield Company Limited, Qinghe，Shandong 262714， China

Received:2004-11-24 Revised:2004-12-31 Online:2005-02-20 Published:2005-02-20

摘要/Abstract

摘要：

东营凹陷八面河地区原油物性呈规律性的变化，偏离生油中心的构造高部位主要分布稠油，靠近生油中心的构造低部位主要分布正常油。对原油族组成与化学成分的分析表明，八面河油田稠油具有低饱芳比、饱和烃含量低、链烷烃与低分子量萘、菲等轻质馏分严重缺失等轻度—中等降解油特征，邻区草桥油田稠油含较为完整的生物降解标志物——25-降藿烷系列，系严重降解油，反映该区稠油的形成与次生变化有关。同区具有相同或相似油气成因的沙子岭原油的成熟度（C₂₉甾烷ααα20S/(S+R)值为0.24~0.25）低于八面河的（C₂₉甾烷ααα20S/(S+R)值为0.31~0.44），为典型未熟—低熟油。沙子岭的轻度或未降解油同样表现为正常油，反映八面河地区低温成烃与稠油无必然的联系，进一步验证八面河稠油主系次生成因。处于构造高部位的油藏由于埋深浅、保存条件差，导致水洗、生物降解等次生变化相对较强，最终形成稠油。

关键词: 稠油, 油气成因, 生物降解, 次生变化

Abstract:

Obvious variations of oil properties were observed from the oils of the Bamianhe region, Bohai Bay Basin, eastern China Heavy oils are mainly distributed in high position tectonically whereas normal oils are in low position with relatively short distance from the depo-center of source rock. Detailedly geochemical investigations of 31 oil samples show that the heavy oils of Bamianhe oilfield are characterized by low concentration of saturated hydrocarbons with low ratios of saturated/aromatic hydrocarbons, and low content of hydrocarbon fractionation with low molecular weight i.e. alkyl alkanes, naphthalene and phenanthrene, suggesting light to middle degree of secondary alteration.Oils from adjacent Chaoqiao oilfield are featured by occurrence of 25norhopane series besides the similar characteristics of biodegradation in the Bamianhe oilfield. It is suggested that secondary alteration is crucial for the formation of the heavy oils in the Bamianhe area. Additionally, the immature oils in the Shaziling oilfield with similar source rocks to the Bamianhe display chacteristics of normal oils rather than that of the heavy oils, which infers that early hydrocarbon degradation does not result in indigenous heavy oils, which further proves secondary alteration is the main factor responsible for the heavy oils in the Bamianhe oilfield.Oil pools with shallow burial depth are liable to be destroyed under relatively bad reserve conditions.

Key words: heavy oil, origin of oil and gas, biodegradation, secondary alteration

中图分类号:

TE122.1

李春梅，李素梅，李雪，庞雄奇，王明培　. 山东东营凹陷八面河油田稠油成因分析[J]. 现代地质, 2005, 19(2): 279-286.

LI Chun-mei,LI Su-mei,LI Xue,PANG Xiong-qi,WANG Ming-pei. Origin of the Heavy Oils from the Bamianhe Oilfield, Dongying Depression[J]. Geoscience, 2005, 19(2): 279-286.

[1]	张迎朝, 胡森清, 刘金水, 蒋一鸣, 陈忠云, 覃军, 刁慧, 王超. 东海陆架盆地丽水西凹陷油气地球化学特征及其成因和来源[J]. 现代地质, 2022, 36(05): 1382-1390.
[2]	刘晓彤, 轩玲玲, 朱春艳, 赵颖, 郭畅, 李松, 张昊, 石振赟, 罗万静. 中高渗透稠油油藏大孔道动态评价[J]. 现代地质, 2021, 35(02): 388-395.
[3]	晏继发, 马安来, 李贤庆, 从刚石, 和钰凯, 张亚超. 金刚烷化合物在深层油气地球化学研究中的应用[J]. 现代地质, 2020, 34(04): 812-820.
[4]	王连刚, 石兰香, 袁哲, 李秀峦, 刘鹏程. 超稠油油藏溶剂辅助蒸汽重力泄油室内实验研究[J]. 现代地质, 2018, 32(06): 1203-1211.
[5]	李蕾, 李素梅, 张洪安, 徐田武, 张云献, 纪红. 东濮凹陷西斜坡盐湖相原油地球化学特征与油源分析[J]. 现代地质, 2018, 32(06): 1109-1124.
[6]	王冰洁，徐长贵，吴奎，张如才，郑彧，宛良伟. 辽东湾坳陷LX油田浅层特稠油藏成藏过程及模式[J]. 现代地质, 2016, 30(3): 663-671.
[7]	郑贺梅，刘鹏程，郑舰. 特超稠油油藏水平井蒸汽驱油物理模拟实验[J]. 现代地质, 2015, 29(6): 1467-1474.
[8]	姜振学，李峰，李卓. 利用石油包裹体烃组分信息恢复塔中地区油气成藏过程[J]. 现代地质, 2013, 27(5): 1193-1201.
[9]	孙浩，张敏，李素梅. 松辽盆地南部浅层天然气地球化学特征及其成因分析[J]. 现代地质, 2013, 27(5): 1173-1179.
[10]	李素梅, 张宝收, 张海祖, 盛世忠, 赵明. 塔中原油超高二苯并噻吩硫特征及其控制因素[J]. 现代地质, 2011, 25(6): 1108-1120.
[11]	万中华, 李素梅. 渤海湾盆地南堡油田原油特征与油源分析[J]. 现代地质, 2011, 25(3): 599-607.
[12]	傅宁,林青,刘英丽. 从南海北部浅层气的成因看水合物潜在的气源[J]. 现代地质, 2011, 25(2): 332-339.
[13]	向廷生, 黑花丽. 原油生物降解模拟实验及其定量化评价[J]. 现代地质, 2010, 24(2): 259-267.
[14]	高金玉史卜庆, 王林, 窦立荣, 程顶胜, 潘校华. CO^₂脱沥青作用形成重油油藏的一个实例[J]. 现代地质, 2009, 23(5): 923-927.
[15]	李素梅姜振学董月霞王旭东. 渤海湾盆地南堡凹陷原油成因类型及其分布规律[J]. 现代地质, 2008, 22(5): 817-823.