摘要
目的研究塔河油田原油芳烃地球化学特征与油气运移规律,探讨芳烃指标用于油气运移的可行性,为油气勘探提供参考数据。方法采用气相色谱-质谱(GC-MS)分析技术,鉴定分析了芳烃组成,将同层位原油中4-/1-甲基苯并噻吩和MRI参数按照井位坐标置于平面图上,分析其平面展布规律。结果芳烃参数中的4-/1-甲基苯并噻吩、TA(Ⅰ)/TA(Ⅱ+Ⅰ)和MRI指数在研究区存在由东向西、由南向北和由南东向北西逐渐降低的趋势,与前人应用其他方法获得的研究区油气运移规律相近。结论芳烃参数适合于高成熟度油田的油气运移研究;应用芳烃参数分析可知研究区存在由东向西、由南向北和由南东向北西3个油气运移方向。
Aim To confirm the geochemistry characteristics of crude oils in the Tahe Oilfield and oil and gasmigration method, and probe into the feasibility of the parameter aromatic compounds, and provide scientific data for hydrocarbon prospecting. Methods According to GC-MS analysis the component of aromatic compounds in the crude oils is identified. In the study the parameters of 4 -/1 -MDBT, TA（Ⅰ）/TA（ Ⅱ ＋ Ⅰ ）and MNR are labeled according to the well location, and the rule of distribution of these indexes is analyzed. Results The distri- butional characteristics of these parameters of 4 -/1 - MDBT, TA（ Ⅰ ）/TA（ Ⅱ ＋ Ⅰ ）and MNR show that these pa- rameters have a reducing trend from east to west, from south to north and from southeast to northwest gradually, which was in consonance with other scholars using different methods. Conclusion This study shows that the aro- matic indexes are acceptable for oil and gasmigration, and these parameters reflect the charging direction of crude oil, which is mainly from the east of the oilfield to the west, from the south of the oilfield to the north and from souhteast to northwest for the Tahe Oilfield.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第4期653-657,共5页
Journal of Northwest University（Natural Science Edition）
基金
国家"973"计划基金资助项目(2005CB422105)
中国科学院资源环境局知识创新重要方向基金资助项目(KZCX3-SW-147)
中国石油化工股份有限公司重大基金资助项目(YPH08103)
关键词
油气运移
地球化学
芳烃
满加尔凹陷
oil and gas migration
geochemistry
aromatic compound
Manjiaer depression
