塔中4油田石炭系储层不同赋存态烃类分子和碳同位素对比研究
Molecular and carbon isotope correlation of free, adsorbed and inclusion oils from the Carboniferous sandstone in the Tazhong-4 oilfield
查看参考文献29篇
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文摘
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塔中421井和塔中402井石炭系油层2个原油样和8个油砂样连续抽提组分甾烷,萜烷分布特征和正构烷烃单体碳同位素组成具有明显的差异,具有不同的来源.塔中421井上石炭统3个油砂样自由态组分,束缚态组分和油气包裹体具有伽马蜡烷和C28甾烷相对含量高,正构烷烃单体碳同位素组成重的特征,划分为Ⅰ类原油,对比认为主要来源于寒武系-下奥陶统烃源岩.塔中421井和塔中402井上石炭统的2个油样具有伽马蜡烷和C28甾烷相对含量低,并且正构烷烃单体碳同位素组成轻的特征,划分为Ⅱ类原油,其来源尚不明确.塔中402井石炭系上,中和下统的5个油砂样各类组分具有介于Ⅰ,Ⅱ类原油之间的特征,为Ⅰ和Ⅱ类原油的混合物.5个油砂样从自由态组分,束缚态组分至油气包裹体Ⅰ类原油含量依次增高,Ⅱ类原油含量依次降低.2口井8个油砂样从自由态组分,束缚态组分至油气包裹体C23三环萜烷/(C23三环萜烷+C30藿烷)和C21/(C21+ΣC29)甾烷比值都依次降低,反映了油气充注过程中,原油成熟度不断升高.塔中4井区储层油砂不同吸附态烃类分子与碳同位素的研究结果反映塔中4油田具有多种油气来源,经历长期油气充注过程,寒武系-下奥陶统烃源岩在地史上对该区具有成烃贡献 |
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其他语种文摘
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Substantial variations have been observed in the distribution patterns of terpanes and steranes and δ13C values of individual n-alkanes between two crude oils and oil fractions obtained by sequential extraction from eight oil sandstones collected from the Carboniferous oil columns in wells TZ421 and TZ402.The result demonstrates that these crude oils and oil fractions have different origins. All the free oil, adsorbed oil and inclusion oil obtained from the three oil sandstones from the oil columns within the Upper Carboniferous strata in well TZ421 are characterized by high relative amounts of gammaceranes and C28 steranes, and high δ13C values of individual n-alkanes. These oil fractions are classified as type I oils, which were derived from Cambrian-Lower Ordovician source rocks. In contrast, the two crude oils from wells TZ421 and TZ402, respectively, have low relative amounts of gammaceranes and C28 steranes, and low δ13C values of individual n-alkanes. They are classified as type II oils, the source rocks of which are unknown so far. The oil fractions obtained from the five oil sandstones from the oil columns of the Upper, Middle and Lower Carboniferous strata in well TZ402 are mixtures of types I and II oils. From the free oil, the adsorbed oil,to the inclusion oil of these five oil sandstones, theproportion of type I oil increases while the proportion of type II oil decreases. In addition, from the free oil, the adsorbed oil,to the inclusion oil of all the eight oil sandstones from both wells TZ421 and TZ402, the ratios of C23tricyclic terpane/(C23tricyclic terpane+C30hopane) and C21/(C21+ΣC29) steranes decrease, suggesting that the maturity of charging oil increased during filling process. The molecular and carbon isotope compositions of various hydrocarbon fractions by sequential extraction from oil sandstones demonstrate that hydrocarbons of Tazhong 4 oilfield were derived from multiple source rocks by long charging process, including the source rocks within Cambrian-Lower Ordovician strata |
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来源
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地球化学
,2010,39(5):479-490 【核心库】
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关键词
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油砂连续抽提
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油气包裹体
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单体烃碳同位素
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塔中4油田
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塔里木盆地
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地址
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中国科学院广州地球化学研究所, 广东, 广州, 510640
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石油大学(北京)盆地与油藏研究中心, 北京, 102249
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0379-1726 |
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学科
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地质学 |
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基金
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国家973计划
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国家自然科学基金
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有机地球化学国家重点实验室专项基金
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文献收藏号
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CSCD:4044600
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参考文献 共
29
共2页
|
|
1.
张水昌.
塔里木盆地海相油气的生成,2004:299-345
|
被引
1
次
|
|
|
|
|
2.
张水昌. 塔里木盆地塔东2油藏形成历史-原油稳定性与裂解作用实例研究.
石油勘探与开发,2004,31(6):25-31
|
被引
52
次
|
|
|
|
|
3.
Zhang S C. Paleozoic oil-source rock correlations in the Tarim Basin,NW China.
Org Geochem,2000,31(4):273-286
|
被引
100
次
|
|
|
|
|
4.
Zhang Shuichang. Geochemistry of Palaeozoic marine petroleum from the Tarim Basin,NW China: Part 1.Oil family classification.
Org Geochem,2005,36(8):1204-1214
|
被引
19
次
|
|
|
|
|
5.
Zhang Shuichang. Geochemistry of Paleozoic marine petroleum from the Tarim Basin,NW China: Part 2. Maturity assessment.
Org Geochem,2005,36(8):1215-1225
|
被引
8
次
|
|
|
|
|
6.
王飞宇. 塔里木盆地寒武系海相烃源岩有机成熟度及演化史.
地球化学,2003,32(5):461-468
|
被引
63
次
|
|
|
|
|
7.
肖中尧. 塔里木盆地哈得逊及相邻地区原油含氮化合物分布特征及油藏充注方向探讨.
地球化学,2003,32(3):263-270
|
被引
15
次
|
|
|
|
|
8.
肖中尧. 一个典型的寒武系油藏:塔里木盆地塔中62井油藏成因分析.
地球化学,2005,34(2):155-160
|
被引
37
次
|
|
|
|
|
9.
肖中尧. 塔里木盆地塔东 2井原油成因分析.
沉积学报,2004,22(增刊):66-72
|
被引
16
次
|
|
|
|
|
10.
周佩瑜. 原油中萘系物柱色谱快速分离技术及其初步应用.
地球化学,2008,37(5):512-518
|
被引
9
次
|
|
|
|
|
11.
杨杰. 塔里木盆地北部隆起原油混合作用半定量评价.
地球化学,2003,32(2):105-111
|
被引
13
次
|
|
|
|
|
12.
马安来. 塔里木盆地寒武-奥陶系烃源岩的分子地球化学特征.
地球化学,2006,35(6):593-601
|
被引
28
次
|
|
|
|
|
13.
张斌. 用元素守恒法估算塔里木盆地台盆区寒武系高过成熟烃源岩产烃率.
地球化学,2007,36(2):200-204
|
被引
2
次
|
|
|
|
|
14.
Wang Zhaoming. A comprehensive review concerning the problem of marine crudes sources in Tarim Basin.
Chinese Sci Bull,2004,49(suppl 1):1-9
|
被引
7
次
|
|
|
|
|
15.
李素梅. 塔中隆起原油特征与成因类型.
地球科学,2008,33(5):635-642
|
被引
30
次
|
|
|
|
|
16.
杨楚鹏. 塔里木盆地塔中4石炭系油藏成藏过程再认识.
石油与天然气地质,2008,29(2):181-188
|
被引
8
次
|
|
|
|
|
17.
Karlsen D A. Hydrocarbon composition of authigenic inclusions: Application to elucidation of petroleum reservoir filling history.
Geochim Cosmochim Acta,1993,57(15):3641-3659
|
被引
122
次
|
|
|
|
|
18.
Schwark L. A novel sequential extraction system for whole core plug extraction in a solvent flow-through cell: Application to extraction of residual petroleum from an intact pore-system in secondary migration studies.
Org Geochem,1997,26(1/2):19-31
|
被引
13
次
|
|
|
|
|
19.
Wilhelms A. Sequential extraction: A useful tool for reservoir geochemistry.
Org Geochem,1996,24(12):1157-1172
|
被引
4
次
|
|
|
|
|
20.
Pan Changchun. Geochemical characteristics and implications of hydrocarbons in reservoir rocks of Junggar Basin, China.
Chem Geol,2000,167(3/4):321-335
|
被引
7
次
|
|
|
|
|
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