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| 1 | The scientific connotation of oil and gas formations under deep fluids and organic-inorganic interaction显示文摘As a relatively stable craton block in the earth system, the petroliferous basin is influenced by the evolution of the earth system from the early development environment of source rocks, hydrocarbon formation, and reservoir dissolution to hydrocarbon accumulation or destruction. As a link between the internal and external factors of the basin, deep fluids run through the whole process of hydrocarbon formation and accumulation through organic-inorganic interaction. The nutrients carried by deep fluids promote the bloom of hydrocarbon-generating organisms and extra addition of carbon and hydrogen source, which are beneficial to the development of high-quality source rock and enhancement of the hydrocarbon generation potential. The energy carried by the deep fluid promotes the early maturation of the source rock and facilitates the hydrocarbon generation by activation and hydrogenation in high-mature hydrocarbon sources. The dissolution alteration of carbonate rocks and clastic reservoirs by CO_2-rich deep fluids improves the deep reservoir space, thus extending the oil and gas reservoir space into greater depth. The extraction of deeply retained crude oil by deep supercritical CO_2 and the displacement of CH_4 in shale have both improved the hydrocarbon fluidity in deep and tight reservoirs. Simultaneously, the energy and material carried by deep fluids(C, H, and catalytic substances) not only induce inorganic CH_4 formation by Fischer-Tropsch(F-T) synthesis and 'hydrothermal petroleum' generation from organic matter by thermal activity but also cause the hydrothermal alteration of crude oil from organic sources. Therefore, from the perspective of the interaction of the earth's sphere, deep fluids not only input a significant amount of exogenous C and H into sedimentary basins but also improve the reservoir space for oil and gas, as well as their enrichment and accumulation efficiencies. | Quanyou LIU Dongya ZHU Qingqiang MENG Jiayi LIU Xiaoqi WU Bing ZHOU Qi FU Zhijun JIN | 2019 | Science China Earth Sciences2019，62，3： | 8 |
| 2 | 深层-超深层油气成藏研究新进展及展望显示文摘我国深层—超深层油气资源丰富,但勘探程度较低。深层—超深层具有比浅层更高的温度和压力,并且来自于深部的流体在深层的作用更强,因此,深层—超深层油气藏与浅层油气藏具有不同的成藏机理。通过广泛调研国内外相关研究,较为系统地总结了深层—超深层油气藏在成烃、成储和成藏方面的特殊性及其主控因素。提出深层—超深层环境中存在促进烃源灶继续生烃的物质和能量,能进一步促进油气形成;起源于深层—超深层储层之下的流体可以发挥建设性作用,从而在深层形成优质规模储层;流经烃源岩和储层的深部富CO_(2)流体对深层烃类具有促排作用,并在浅层发挥促藏作用。尽管前人归纳的这些理论对指导发现规模油气藏尚存一些争议,但应该看到,在深层—超深层独特的地质条件下,在总结油气成藏规律时,全面、充分考虑各种因素,有助于提高深层—超深层探井成功率,降低勘探成本。 | 关晓东 郭磊 | 2023 | 石油实验地质2023，45，2： | 7 |
| 3 | 贵州剑河地区中寒武统石冷水组油苗地球化学特征及来源研究显示文摘与麻江-凯里古油藏相邻的剑河地区中寒武统石冷水组油苗发育,这些油苗遭受了严重的生物降解作用。前人均认为这些油苗来源于下寒武统泥质烃源岩,但剑河地区还发育处于高-过成熟阶段的上震旦统陡山沱组泥质烃源岩。为了减少热成熟作用和生物降解作用对油源对比的干扰,本文采取催化加氢热解技术释放上震旦统-下寒武统泥质烃源岩干酪根中的键合态生物标志物,与麻江-凯里地区下寒武统烃源岩干酪根中的键合态生物标志物进行了对比研究。在综合分析各样品的生物标志物及其碳同位素组成特征的基础上,结合剑河地区的石油地质背景,对石冷水组油苗的烃源进行了研究。研究结果表明,剑河地区上震旦统陡山沱组泥岩的沉积环境与麻江-凯里地区下寒武统烃源岩相似,但与剑河地区下寒武统九门冲组泥质烃源岩存在明显差异,上震旦统陡山沱组泥质烃源岩的沉积母质类型也更为复杂。石冷水组油苗与凯里地区奥陶系和志留系油苗相似,均为生物降解油与未生物降解油的混合物,且来源于上震旦统-下寒武统泥质烃源岩;剑河地区上震旦统-下寒武统泥质烃源岩可能存在二次生烃,所生成的烃类两次充注于中寒武统石冷水组地层中,前期供烃遭受了严重的生物降解作用,后期的供烃则较少受到生物降解作用的影响。 | 袁方 廖玉宏 方允鑫 耿安松 | 2015 | 地球化学2015，44，5： | 1 |
| 4 | Oil-source correlation of Lower-Triassic oil seepages in Ni'erguan village, Southern Guizhou Depression, China显示文摘There are abundant bitumens and oil seepages stored in vugs in a Lower-Triassic Daye formation(T_1d)marlite in Ni'erguan village in the Southern Guizhou Depression. However, the source of those oil seepages has not been determined to date. Multiple suites of source rocks of different ages exist in the depression. Both the oil seepages and potential source rocks have undergone complicated secondary alterations, which have added to the difficulty of an oil-source correlation. For example, the main source rock, a Lower-Cambrian Niutitang Formation'(∈_1n) mudstone, is over mature, and other potential source rocks, both from the Permian and the Triassic, are still in the oil window. In addition, the T_1d oil seepages underwent a large amount of biodegradation. To minimize the influence of biodegradation and thermal maturation, special methods were employed in this oil-source correlation study. These methods included catalytic hydropyrolysis, to release covalently bound biomarkers from the over mature'kerogen of ∈_1n mudstone, sequential extraction, to obtain chloroform bitumen A and chloroform bitumen C from the T_1d marlite, and anhydrous pyrolysis, to release pyrolysates from the kerogen of T_1d marlite. Using the methods above, the biomarkers and n-alkanes releasedfrom the oil samples and source rocks were analysed by GC–MS and GC-C-IRMS. The oil-source correlation indicated that the T_1d oil seepage primarily originated from'the ∈_1n mudstone and was partially mixed with oil generated from the T_1d marlite. Furthermore, the seepage also demonstrated that the above methods were effective for the complicated oil-source correlation in the Southern Guizhou Depression. | Fang Yuan Yuhong Liao Yunxin Fang Ansong Geng | 2016 | Acta Geochimica2016，35，1： | 0 |
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