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| 准东三台-北三台地区储层沥青和稠油特征与成因分析 |
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路俊刚1,2,陈世加1,2,王绪龙3,王熠1,张纪智1,石正灏1
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(1.西南石油大学 资源与环境学院,四川 成都 610500;2.西南石油大学 油气藏地质及开发工程国家重点实验室,四川 成都 610500;3.新疆油田分公司,新疆 克拉玛依 834000)
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| 摘要: |
| 根据原油、储层抽提物和烃源岩地球化学特征,对三台-北三台地区储层沥青和稠油成因进行分析,并研究沥青和稠油对勘探的影响。结果表明:该区稠油和储层沥青分布广泛,稠油主要分布在侏罗系和三叠系地层中,沥青主要分布在侏罗系头屯河组及其以上地层中;稠油和储层沥青均表现出严重生物降解的特征,且来源单一,主要来自二叠系平地泉组烃源岩;三台-北三台地区储层沥青和重质稠油主要是低-未成熟阶段的原油遭严重生物降解的结果,中质稠油主要是成熟阶段原油遭中等生物降解或散失所致;研究区源岩生烃高峰期产物并没有遭受严重破坏,具有较好勘探前景,下步勘探应以中细砂岩分布带和构造下倾部位储层为主要目标。 |
| 关键词: 生物降解 储层沥青 稠油成因 三台-北三台 准噶尔盆地 |
| DOI：10.3969/j.issn.1673-5005.2011.05.005 |
| 分类号::TE 122.1 |
| 文献标识码:A |
| 基金项目:国家“973”项目(2006CB202305);四川省重点学科项目(SZD0414) |
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| Characteristics and origin analysis of viscous oil and reservoir bitumen in Santai Beisantai area |
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LU Jun gang1,2, CHEN Shi jia1,2, WANG Xu long3, WANG Yi1, ZHANG Ji zhi1, SHI Zheng hao1
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(1.College of Resource and Environment, Southwest Petroleum University, Chengdu 610500, China;2.Reservoir Geology and Development Project National Key Laboratory, Southwest Petroleum University, Chengdu 610500, China;3.Xinjiang Oilfield Company, Karamay 834000, China)
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| Abstract: |
| According to the geochemical characteristics of crude oil, reservoir bitumen and source rocks, the origin of viscous oil and reservoir bitumen was analyzed. The effects of bitumen and viscous oil on the exploration were researched. The results show that the viscous oil distributes widely in Jurassic and Triassic formation, and the reservoir bitumen distributes mainly in the Toutunhe formation and above the formation. Both viscous oil and reservoir bitumen are suffered from strong biodegradation, and most hydrocarbon components and n alkanes in oil are loss. The oil and bitumen in the region come mainly from Pingdiquan group source rocks of Permian. The heavy viscous oil and reservior bitumen all derived from the result that the low maturity crude oil suffered from loss and strong biodegradation. The medium density oil comes from the result that the mature oil suffered from loss and moderate biodegradation. The oil and gas at peak stage is not destroyed seriously, and the later target of exploration should be middle fine sandstone belt and the downdip part of the Santai Beisantai uplift. |
| Key words: biodegradation reservoir bitumen origin of viscous oil Santai Beisantai Junggar Basin |
