| 秦南凹陷秦皇岛29-2油气田原油来源及其勘探意义 |
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| 引用本文： | 杨海风,魏刚,王德英,余宏忠,李颖.秦南凹陷秦皇岛29-2油气田原油来源及其勘探意义[J].油气地质与采收率,2011,18(6). |
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| 作者姓名： | 杨海风 魏刚 王德英 余宏忠 李颖 |
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| 作者单位： | 1. 中海石油(中国)有限公司天津分公司,天津,300452
2. 中海油能源发展股份有限公司钻采工程研究院,天津,300452 |
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| 摘 要： | 秦皇岛29-2油气田的发现是秦南凹陷首次重大勘探突破,其影响意义深远.通过对原油物性和地球化学特征分析发现,虽然该油气田凝析油、正常原油和稠油3类原油的物性变化较大,但其母质来源和沉积环境相同、具有同源的特征.以规则甾烷C2920S/(20S+20R)为约束条件,综合利用ααα20RC27/C29规则甾烷和原油碳同位素2种油源对比参数,证实该油气田原油来自沙三段烃源岩.进一步利用回归方程求得原油所对应烃源岩镜质组反射率为0.71％ ～0.72％,与研究区钻井揭示的沙三段烃源岩的成熟度相当,表现出近源供烃的特征.研究结果表明,秦南凹陷内小型次洼已具备较大的生排烃能力,而与之相邻的烃源岩厚度更大、埋藏更深的秦南凹陷东洼周边勘探前景应更为广阔.
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| 关 键 词： | 物性特征 地球化学特征 原油来源 秦皇岛29-2 油气田 秦南凹陷 |
Oil sources and exploration significance of Qinhuangdao29-2 oil-gas field |
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| Yang Haifeng,Wei Gang,Wang Deying et al.Yang Haifeng.Oil sources and exploration significance of Qinhuangdao29-2 oil-gas field[J].Petroleum Geology and Recovery Efficiency,2011,18(6). |
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| Authors: | Yang Haifeng Wei Gang Wang Deying Yang Haifeng |
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| Affiliation: | Yang Haifeng,Wei Gang,Wang Deying et al.Yang Haifeng,Department of Technology,CNOOC Tianjin Company,Tianjin City,300452,China |
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| Abstract: | The discovery of Qinhuangdao29-2 oil-gas field is the first major breakthrough for petroleum exploration in Qinnan sag,and the influence on the petroleum exploration itself is also profound.Through the analyses of physical property and geochemical characteristics of the crude oil,the author finds that,although its physical property changes greatly,its origin of parent material and the sedimentary environment are almost identical.Therefore,the crude oil has the characteristics of congruent origin in this oil... |
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| Keywords: | petrophysical feature geochemical characteristics oil sources Qinhuangdao29-2 oil and gas field Qinnan sag |
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