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Stable carbon isotopes of gaseous alkanes as genetic indicators inferred from laboratory pyrolysis experiments of various marine hydrocarbon source materials from southern China

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Science China Earth Sciences 2012年第6期55卷 966-974页

作者： LIU WenHui WANG Jie, Tengert QIN JianZhong zheng lunju Wuxi Institute of Petroleum Geology S1NOPEC Wuxi 214151 China

Using high pressure and geological condition simulation vessels, we conducted hydrous pyrolysis experiments of kerogen, solid bitumen and liquid hydrocarbons in southern China in order to study the processes of gas generation and derive geo- chemical indicators of gas genesis under approximate pressure and temperature. The results indicate that gas generation productivity of different marine material decreased in the ganic matter （solid bitumen and heavy oil）, and kerogen. order of crude oil （light oil and condensate）, dispersed soluble or- Under identical temperature-pressure regimes, pyrolysates derived from kerogen and dispersed soluble organic matter display drastically different geochemical characteristics. For example, the δ13Cc02-δ13C1 values of gaseous products from dispersed soluble organic matter are greater than 20%o, whereas those from kerogen are less than 20%~. The 813C1 values of pyrolysates from different marine hydrocarbon sources generally increase with pyrolysis temperature, but are always lower than those of the source precursors. The δ13C values of ethane and propane in the pyrolysates also increase with increasing pyrolysis temperature, eventually approaching that of their sources, at peak hydro- carbon generation. At high-over mature stages, the δ13C values of ethane and propane are often greater than those of their sources but close to those of coal gases, and thus become ineffective as gas genetic indicators. Ln（CffC3） can clearly distin- guish kerogen degradation gas from oil cracking gas and Ln（CJC2）-（δ13C1-δ13C2） can be an effective indicator for distinguishing oil cracking gas from dispersed soluble organic matter cracking gas.

关键词： marine strata in southern China different hydrocarbon source hydrous pyrolysis simulation gas isotopes oil cracking gas

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Thermal simulation experiment of organic matter-rich shale and implication for organic pore formation and evolution

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Petroleum Research 2017年第4期2卷 347-354页

作者： Zhongliang Ma lunju zheng Xuhui Xu Fang Bao Xiaolu Yu State Key Laboratory of Shale Oil and Gas Enrichment and Effective Development Jiangsu 214126China State Energy Center for Shale Oil Research and Development Jiangsu 214126China Sinopec Key Laboratory of Petroleum Accumulation Mechanisms Jiangsu 214126China Wuxi Research Institute of Petroleum Geology Sinopec Petroleum Exploration and Production Research InstituteJiangsu 214126China

A thermal simulation experiment of diagenesis,hydrocarbon generation and evolution of the organic matter-rich shale was carried out to investigate formation and evolution of organic pores under the constraint from immature,low mature,mature,high mature to overmature geological *** argon ion polishingefield emission scanning electron microscope was used to analyze microscopic features of original samples and simulated samples of various evolution *** showed organic pores could be formed during hydrocarbon generation from biochemical and hypothermal processes in the immature and low mature stages,and the shale shallow-buried depth might be favorable for preservation of organic pores;the generation and evolution of organic pores were of heterogeneity,and the maturity was not a decisive factor which controlled formation and development of organic pores,while the difference in physiochemical structure of organic matter played an important role in formation and evolution of organic pores;the organic pore development was obviously related with the retained oil,and the organic pores formed in the oil generation stage were easily filled by pyrolysis asphalt;organic contraction fractures/organic marginal pores might be important storage spaces for shale gas occurrence,and their development was mainly controlled by the physiochemical structure and evolution degree of organic matters when the chemical adsorbed organic matter was converted into the physical adsorbed organic matter and the free organic matter.

关键词： Thermal simulation experiment Organic pores Thermal evolution stage Heterogeneity Plane porosity Retained oil Shale

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Applying terahertz time-domain spectroscopy to probe the evolution of kerogen in close pyrolysis systems

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Science China(Physics,Mechanics & Astronomy) 2013年第8期56卷 1603-1605页

作者： BAO RiMa WU ShiXiang ZHAO Kun zheng lunju XU ChangHong College of Science China University of Petroleum Petroleum Exploration and Production Research Institute China Petroleum and Chemical Corporation Exploration and Production Research Institute China Petroleum and Chemical Corporation

Terahertz time-domain spectroscopy (THz-TDS) has been used to probe the evolutionary paths of kerogen in selected black mudstone. The evolutionary regime of kerogens (for instance, the immaturity, early maturity, middle maturity, late maturity, and catagenesis stages) can be indicated by the absorption coefficient in the THz region. The present study of identification based on THz-TDS was in good agreement with programmed pyrolysis experiments and suggests that THz technology can act as a nondestructive, contact-free tool for probing the ability to generate hydrocarbons from kerogens.

关键词： evolution kerogen terahertz spectroscopy

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Genesis of Marine Carbonate Natural Gas in the Northeastern Sichuan Basin,China

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Acta Geologica Sinica(English Edition) 2008年第3期82卷 577-584页

作者： ZHANG Qu TENGER MENG Qingqiang QIN Jianzhong JIANG Qigui zheng lunju Institute of Petroleum Geology Petroleum Exploration and Production Research Institute Sinopec Wuxi Jiangsu 214151 China State Key Laboratory for Petroleum Resource and Prospecting Beijing 102249 China Key Laboratory of Minister for Hydrocarbon Accumulation Mechanism in China University of Petroleum Ministry of Education Beijing 102249 China Basin and Reservoir Research Center China University of Petroleum Beijing 102249 China

Sichuan Basin is one of the structurally stable and gas-rich basins, being regarded as one of China＇s important natural gas industry bases. Puguang and Jiannan gas fields, located in the eastern Sichuan Basin are two large fields with gas derived from Permian and Lower Triassic marine carbonate. The genesis of marine carbonate natural gas was examined using carbon isotope composition and hydrocarbon components of natural gas samples from the eastern and western Sichuan Basin, and compared with that of acidolysis gas derived from marine source rock in the eastern Sichuan Basin. It is concluded that the natural gas in the marine carbonate reservoir originated from pyrolysis of the earlier crude oil and light-oil, and then mixed with kerogen pyrolysis gas of the Permian and Lower Silurian source rock.

关键词： Sichuan Basin natural gas carbon isotope acidolysis gas genesis

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Effect of Shale Reservoir Characteristics on Shale Oil Movability in the Lower Third Member of the Shahejie Formation, Zhanhua Sag

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Acta Geologica Sinica(English Edition) 2020年第2期94卷 352-363页

作者： NING Chuanxiang MA Zhongliang JIANG Zhenxue SU Siyuan LI Tingwei zheng lunju WANG Guozhen LI Fengxun State Key Laboratory of Shale Oil and Gas Enrichment and Effective Development Wuxi 214126.JiangsuChina Wuxi Research Institute of Petroleum GeologySinopec Exploration and Production Research Institute Wuxi 214126JiangsuChina Unconventional Natural Gas Institute China University of PetroleumBeijing 102249China College of Earth Science.Jilin University Changchun 130012China Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral Shandong University of Science and TechnologyQingdao 266590China Gas Hydrate Engineering Technology Center Guangzhou Marine Geological SurveyGuangzhou 510075China

To reveal the effect of shale reservoir characteristics on the movability of shale oil and its action mechanism in the lower third member of the Shahejie Formation(Es3l), samples with different features were selected and analyzed using N2 adsorption, high-pressure mercury injection capillary pressure(MICP), nuclear magnetic resonance(NMR), high-speed centrifugation, and displacement image techniques. The results show that shale pore structure characteristics control shale oil movability directly. Movable oil saturation has a positive relationship with pore volume for radius > 2 μm, as larger pores often have higher movable oil saturation, indicating that movable oil is present in relatively larger pores. The main reasons for this are as follows. The relatively smaller pores often have oil-wetting properties because of organic matter, which has an unfavorable effect on the flow of oil, while the relatively larger pores are often wetted by water, which is helpful to shale oil movability. The rich surface provided by the relatively smaller pores is beneficial to the adsorption of immovable oil. Meanwhile, the relatively larger pores create significant pore volume for movable oil. Moreover, the larger pores often have good pore connectivity. Pores and fractures are interconnected to form a complex fracture network, which provides a good permeability channel for shale oil flow. The smaller pores are mostly distributed separately;thus, they are not conducive to the flow of shale oil. The mineral composition and fabric macroscopically affect the movability of shale oil. Calcite plays an active role in shale oil movability by increasing the brittleness of shale and is more likely to form micro-cracks under the same stress background. Clay does not utilize shale oil flow because of its large specific surface area and its block effect. The bedding structure increases the large-scale storage space and improves the connectivity of pores at different scales, which is conducive t

关键词： shale oil movability shale reservoirs pore structure characteristics lower third member of the Shahejie Formation

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川南地区金页1井早寒武世烃源岩沉积地球化学特征

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石油与天然气地质 2020年第4期41卷 800-810页

作者：程建郑伦举中国石化石油勘探开发研究院无锡石油地质研究所江苏无锡214126

为了深入研究四川盆地南部下寒武统麦地坪组-筇竹寺组烃源岩发育环境及源岩沉积地球化学特征,通过分析川南井研-犍为地区金页1井麦地坪组与筇竹寺组烃源岩岩矿组成、有机碳含量、成烃生物组合、氧化还原性指标及各项指标之间的内在联系... 详细信息

为了深入研究四川盆地南部下寒武统麦地坪组-筇竹寺组烃源岩发育环境及源岩沉积地球化学特征,通过分析川南井研-犍为地区金页1井麦地坪组与筇竹寺组烃源岩岩矿组成、有机碳含量、成烃生物组合、氧化还原性指标及各项指标之间的内在联系,发现麦地坪组与筇竹寺组烃源岩岩矿组成与成烃环境存在很大差别:麦地坪组烃源岩为含硅质云岩,有机碳丰度中等,δU大于1.7,指示超强还原环境,其成烃生物主要为具有浅水生活习性的小壳生物形成的微生物席,推测其强还原性可能与大量繁盛并死亡的小壳生物迅速消耗海底水中氧气有关,并非由深水相环境造成,虽还原性很强,但烃源岩有机碳丰度并不高,各种沉积地球化学参数关联性分析认为麦地坪组应形成于潮坪沉积环境。筇竹寺组烃源岩主要由硅质与粘土质页岩组成,下、上两段有机碳丰度高低不一,成烃生物以无定形絮状有机聚集体为主,δU指数0.8~1.7,有机碳含量与氧化还原性之间对应关系明显,沉积环境应为氧化至较强还原环境的浅水-深水陆棚相。川南地区早寒武世时期的构造-沉积-岩相古地理环境、原始生物类型、岩石矿物质组成等多种因素共同决定了烃源岩品质的优劣及其沉积地球化学特征。

关键词：氧化还原环境沉积地球化学烃源岩沉积环境麦地坪组筇竹寺组早寒武世四川盆地

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生油增压定量模型及影响因素

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石油学报 2011年第4期32卷 637-644页

作者：郭小文何生郑伦举吴珍珍中国石油勘探开发研究院北京100083 中国地质大学构造与油气资源教育部重点实验室湖北武汉430074 中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所江苏无锡214151

在考虑Ⅰ型干酪根烃源岩生油过程中孔隙水和油的排出、氢指数对生油的影响、生油作用产生的超压对孔隙水压缩和干酪根的压实作用、压实使石油密度变化等因素的基础之上,建立了生油增压模型,并通过生油增压物理模拟实验验证生油增压成因... 详细信息

在考虑Ⅰ型干酪根烃源岩生油过程中孔隙水和油的排出、氢指数对生油的影响、生油作用产生的超压对孔隙水压缩和干酪根的压实作用、压实使石油密度变化等因素的基础之上,建立了生油增压模型,并通过生油增压物理模拟实验验证生油增压成因机制和生油增压模型。生油增压物理模拟实验结果显示Ⅰ型干酪根烃源岩生油过程中在一定条件下可以产生强超压,而且实测生油增压值与生油增压模型计算结果可比,说明生油作用可以成为含油气盆地产生大规模超压的一种成因机制,也验证了生油增压模型可以用于定量评价烃源岩生油增压。Ⅰ型干酪根烃源岩生油增压受烃源岩成熟度、有机碳含量、氢指数和石油残留系数(α)等多种参数影响。生油增压模型参数敏感性分析结果表明烃源岩有机碳含量、氢指数和石油残留系数(α)这3个参数中以氢指数对生油增压的影响最小,石油残留系数(α)影响最大。在没有排烃之前,烃源岩生油过程中如果渗漏的油量达到生成石油总量的25%,则不能产生明显的超压,但在封闭条件较好的情况下,有机碳含量仅有0.5%的烃源岩生油作用也可以产生比较强的超压。

关键词：烃源岩生油增压定量模型物理模拟实验敏感性分析

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影响海相烃源岩热解生烃过程的地质条件

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地球科学（中国地质大学学报） 2015年第5期40卷 909-917页

作者：郑伦举关德范郭小文马中良中国石化油气成藏重点实验室江苏无锡214151 中国石化石油勘探开发研究院无锡石油地质研究所江苏无锡214151 中国地质大学构造与油气资源教育部重点实验室湖北武汉430074

热解生烃实验是研究油气生成机理与定量评价烃源岩生烃潜力的重要方法.烃源岩热解生烃模拟结果不仅与温度、压力和时间等因素有关,而且与地层孔隙水及压实成岩作用等地质因素密切相关.采用高压流体和高压釜（低压水蒸气）两种生烃热模... 详细信息

热解生烃实验是研究油气生成机理与定量评价烃源岩生烃潜力的重要方法.烃源岩热解生烃模拟结果不仅与温度、压力和时间等因素有关,而且与地层孔隙水及压实成岩作用等地质因素密切相关.采用高压流体和高压釜（低压水蒸气）两种生烃热模拟方法对低成熟海相二叠统大隆组（P2d）黑色泥岩进行了热解生烃实验模拟.对比分析两组实验结果表明地层孔隙热解实验有利于液态油的生成,不利于液态油向气态烃的转化,并极大地提高了干酪根的生油气潜力,显示了高压液态水、流体压力和孔隙空间等地质因素对烃源岩中有机质热成熟生烃反应的重要影响.这种影响可能与高压液态水的近临界特性有关,近临界特性地层水的参与改变了干酪根热力生烃反应的物理化学行为.推断在实际地质温压（100-200℃,30-120MPa）条件下,烃源岩孔隙中的地层水是一种相对低温高压液态水,具有水的近临界物理化学特性,因此高压流体生烃热模拟实验与实际地层情况更为接近,能更有效地评价烃源岩生烃潜力。

关键词：生烃热模拟高压液态水流体压力孔隙空间生烃潜力石油地质烃类.

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碳酸盐岩烃源岩不同热模拟方式下气体碳同位素演变特征

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石油实验地质 2022年第1期44卷 121-128,138页

作者：陈磊郑伦举黄海平宁传祥中国地质大学(北京)能源学院北京100083 中国石化石油勘探开发研究院无锡石油地质研究所江苏无锡214126 页岩油气富集机理与有效开发国家重点实验室江苏无锡214126 国家能源页岩油研发中心江苏无锡214126

我国海相烃源岩普遍处于高—过成熟阶段,现有的烃气碳同位素指标不能直接应用于判识海相碳酸盐岩天然气成因类型以及进行油气源对比。利用云南禄劝Ⅱ_(1)型低成熟海相碳酸盐岩烃源岩,开展了不同热模拟方式下的系列热解生烃实验,对收集... 详细信息

我国海相烃源岩普遍处于高—过成熟阶段,现有的烃气碳同位素指标不能直接应用于判识海相碳酸盐岩天然气成因类型以及进行油气源对比。利用云南禄劝Ⅱ_(1)型低成熟海相碳酸盐岩烃源岩,开展了不同热模拟方式下的系列热解生烃实验,对收集的气体产物进行碳同位素分析。结果表明:①在整个热演化阶段,干酪根碳同位素值随成熟度变化不大,而甲、乙烷碳同位素值均随成熟度增加先变轻再变重,具有相似的演变特征,在油气生成的主要阶段,明显小于其母质干酪根碳同位素值,在过成熟阶段,乙烷碳同位素变重的趋势明显加快,甚至大于其母质干酪根的碳同位素值,呈现出“煤型气”特征,故单纯地采用甲、乙烷碳同位素值来判识天然气类型时需要慎重;②在成熟度相同时,半封闭—半开放体系模拟实验所得气体碳同位素值相比封闭体系模拟实验的要轻,这指示同一烃源岩排出烃气所形成的常规天然气藏,其烃气碳同位素值与滞留在源内的页岩气碳同位素值存在一定的差异,显示出似乎“不同源”的特征,在利用碳同位素模版或回归公式开展气源对比时也需要注意;③两种热模拟方式下、同一种烃源岩在全演化阶段,甲烷碳同位素值总是比乙烷的要小,这表明由单一烃源岩直接供气形成的常规天然气藏,不会发生甲、乙烷碳同位素的“倒转现象”。

关键词：热压生排烃模拟天然气碳同位素天然气判识油气源对比烃源岩碳酸盐岩

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不同模拟实验条件下烃源岩生油气能力对比及意义

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石油实验地质 2016年第5期38卷 665-671,678页

作者：张彩明郑伦举许锦中国石化石油勘探开发研究院无锡石油地质研究所江苏无锡214126 中国石化油气成藏重点实验室江苏无锡214126

通过对比研究地层孔隙热压生、排烃模拟实验与高压釜生烃模拟实验中油气产率及其演化过程与产物地化参数特征,结果表明由于模拟实验设置的边界条件不同,同样热解温度条件下地层孔隙模拟实验已生成的油气产率是高压釜模拟实验的两倍多,... 详细信息

通过对比研究地层孔隙热压生、排烃模拟实验与高压釜生烃模拟实验中油气产率及其演化过程与产物地化参数特征,结果表明由于模拟实验设置的边界条件不同,同样热解温度条件下地层孔隙模拟实验已生成的油气产率是高压釜模拟实验的两倍多,但地层孔隙模拟实验残余固态产物的岩石热解自由烃、生烃潜力、氢指数仍然大于高压釜模拟实验的。分析认为,高压釜模拟实验所设置的热解实验条件加速了干酪根的过度裂解,生成了更多的"焦炭"、二氧化碳和氢气,偏离了烃源岩的自然演化过程;而在地层孔隙模拟实验的实验条件,有效阻止了干酪根的过度裂解,使干酪根向油气的转化率较高,所得油气产率较高压釜大。实验数据表明,地层孔隙模拟的已生成的油气产率不仅大于原始样品的氢指数,且生油后残余固态产物仍具有较高的氢指数。因此,烃源岩的氢指数和模拟实验的油气产率均不能正确评价烃源岩的真正生油气潜量,提出采用油气指数来评价烃源岩的最大生油气潜量。

关键词：地层孔隙模拟高压釜模拟边界条件岩石热解油气指数

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维普期刊数据库

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