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| 1 | 深层海相天然气成因与塔里木盆地古生界油裂解气资源显示文摘我国海相地层时代老,演化程度偏高,高过成熟干酪根热降解生气潜力有限。针对深层海相天然气成因,提出了有机质接力成气机理,具体包含3方面涵义,生气母质的转换、生气时机的接替和气源灶的变迁。源内分散液态烃型气源灶继承了原生气源灶的特征,而源外分散和聚集型液态烃气源灶与原生气源灶相比,则发生了空间上的迁移。上述三部分液态烃在高—过成熟阶段均可裂解成气,但后者通常埋藏较前者浅,裂解成气的时机晚于前者,有利于晚期成藏。通过不同有机质丰度、不同岩性烃源岩生排烃模拟实验研究,建立了不同有机质丰度烃源岩的排油率图版,为源内、源外分散液态烃分配比例和数量研究提供了依据;从3个方面,生烃潜力评价指标S1、热成因沥青和储层的荧光特征,论证了塔里木盆地古生界地层中分散可溶有机质的数量、分布、裂解程度,肯定了塔里木盆地古生界海相烃源岩有机质接力成气的现实性;并用正演研究思路计算了塔里木盆地中下寒武统分散可溶有机质裂解成气数量。有机质接力成气机理的应用大大提高了塔里木盆地台盆区古生界找气的潜力和希望。 | 王兆云 赵文智 张水昌 王红军 汪泽成 | 2009 | 沉积学报2009，27，1： | 14 |
| 2 | 两种温压体系下烃源岩生烃演化特征对比及其深层油气地质意义显示文摘利用3种有机质类型的海相烃源岩,分别在温压共控模拟和常规高压釜模拟两种温压体系下开展生烃模拟实验。在系统对比两种模拟方式产物产率、有机地球化学特征基础之上,分析了静岩压力和流体压力、水的性质与相态对烃源岩生烃过程与生烃机理的影响,探讨了实验结果在深层油气勘探中的地质意义。实验结果对比表明,高静岩压力和流体压力以及高温压缩态水的存在对有机质生烃演化具有明显控制作用,主要表现在以下几点:(1)有机质镜质组反射率受到'抑制',成熟阶段原油生成被延迟,高过成熟阶段延缓原油向烃气转化;(2)原油和原油裂解气产率增加,干酪根裂解烃气、CO_2和H_2非烃气产率降低;(3)原油产物中非烃和沥青质组分含量增加,烃气产物干燥系数相对较低、碳同位素值更偏负;(4)促进了干酪根'解聚型'生成油气方式的发生,抑制了'官能团脱除型'生成油气方式的发生。实验结果为深层油气资源评价、勘探深度下限厘定、烃类相态预测提供了有价值的信息。 | 付小东 秦建中 姚根顺 郑伦举 邹伟宏 腾格尔 王小芳 | 2017 | 地球化学2017，46，3： | 14 |
| 3 | 川东北长兴-飞仙关组原油裂解型气藏成藏史分析显示文摘采用储层流体包裹体、固体沥青有机岩石学与^13C—NMR(CP/MAS)谱分析,结合盆地模拟技术,对川东北普光地区油气成藏历史进行了分析.根据固体沥青包裹体特征、储层固体沥青双反射和高芳碳率特征,证实了川东北长兴.飞仙关组储层固体沥青的为高演化阶段的原油裂解形成的焦沥青,天然气具有原油裂解成因.通过单井热史、生烃史的盆地模拟,结合流体包裹体均一化温度及构造演化历史分析,本人认为川东北飞仙关组天然气藏经历了三期的油气充注过程:第一期油气充注发生于185~180Ma的早侏罗世中晚期,主要是下志留统烃源岩的大量生烃,对应包裹体均一化温度在80~110℃,代表了燕山早期阶段初始油藏的形成过程:第二期油气充注在165~138Ma,代表了燕山中期快速沉降阶段二叠系烃源岩大量生油阶段的油气充注过程,对应充注温度在120—155℃;第三期油气充注发生在110-65Ma,主要代表了储层原油裂解生气过程,对应充注温度160—210℃.喜马拉雅期的调整改造造就了现今气田的分布面貌. | 刘岩 钟宁宁 陈践发 田永晶 齐雯 唐友军 | 2013 | 中国科学:地球科学2013，43，11： | 10 |
| 4 | 准噶尔盆地玛湖地区石炭系构造圈闭勘探潜力显示文摘准噶尔盆地环玛湖富烃凹陷石炭系发育一系列继承性构造圈闭,成藏条件优越,但埋深普遍超过6 000m,深层构造是否发育有效储层,圈闭内是否存在天然气等轻质流体,是深层勘探能否获得成功、开发能否高产的关键问题。在单井资料匮乏的情况下,通过航磁异常处理、地震层速度分析等方法,认为玛北背斜、达1井背斜石炭系发育中基性火山岩风化壳储层,玛湖背斜、玛南背斜发育中酸性火山岩;玛湖背斜、玛南背斜的储层物性相对较差。根据玛湖地区烃源岩演化阶段、天然气成因分类等推测玛北背斜、玛湖背斜内主要赋存干酪根裂解气,达1井背斜为油气共存,玛南背斜为原油裂解气。综合储层、流体相态、成藏条件及埋深等因素,综合分析认为玛北背斜和达1井背斜成藏条件优越,成藏潜力大,有望获得高产气流及发现规模整装大气田。 | 杨帆 卫延召 杨春 阿布力米提.依明 陈刚强 卞保力 李啸 | 2016 | 天然气地球科学2016，27，2： | 7 |
| 5 | The role of reservoir mediums in natural oil cracking:Preliminary experimental results in a confined system显示文摘Large amounts of data regarding the influence of temperature and pressure on the thermal stability of crude oil have been pub-lished;however,the role of reservoir mediums has received little attention.Experiments involving oil cracking in the presence of montmorillonite,illite,calcite,quartz and water were conducted in closed gold tubes to investigate the effects of these reservoir mediums on oil destruction.This was done by screening variations in the chemical and stable carbon isotopic components of nC10+ and gasoline-range hydrocarbons(nC8-)present in various systems.Results indicated that reservoir mediums have an active role in oil cracking under experimental conditions.The concentrations of nC10+ in the cracked residues progressively decreased in systems containing oil+water+illite,oil+water+montmorillonite,oil+water,oil+water+quartz and oil+water+calcite.In comparison with the system containing oil+water,our results indicated a retardation effect for oil cracking in systems in the presence of illite and montmorillonite,and an acceleration effect on oil destruction in systems in the presence of calcite and quartz.nC10+ became increasingly depleted in 13C in systems with oil+water+illite,oil+water+calcite,oil+water+montmorillonite,oil+water+ quartz and oil+water.No obvious correlation was observed between concentrations and stable carbon isotopic components of nC6-nC8 and nC10+ in the individual systems.The discrepancies in chemical and stable carbon isotopic components of nC6-nC8 and nC10+ in the pyrolyzed residues highlighted the important role of reservoir mediums to control carbon-carbon cleavage of nC10+ and then the isomerization,cyclolization and aromatization reactions;as well as governing the occurrence and thermal destruction of nC6-nC8 under experimental conditions.This research may have critical implications in reconstructing chemical kinetic models for natural oil cracking. | XIAO QiLin1,2,SUN YongGe1,3 & ZHANG YongDong1,2 1 State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China 2 Graduate Schools,Chinese Academy of Sciences,Beijing 100049,China 3 Institute of Environmental and Biogeochemistry(eBig),Zhejiang University,Hangzhou 310027,China | 2010 | Chinese Science Bulletin2010，55，33： | 5 |
| 6 | Geochemical evolution during the cracking of crude oil into gas under different pressure systems显示文摘Two comparative simulation experiments(a normal atmospheric-pressure opening system and a 20 MPa closed system)were conducted to study the geochemical evolution of n-alkane,sterane,and terpane biomarkers in the process of oil cracking into gas under different pressures.With an initial experimental temperature set at 300°C,the temperature was increased to 650°C at a heating rate of 30°C/h.The products were tested every 50°C starting at 300°C,and a pressure of 20 MPa was achieved using a water column.The low-maturity crude oil sample was from the Paleogene system in the Dongying sag in eastern China.The threshold temperature obtained for the primary oil cracking process in both pressure systems was 450°C.Before the oil was cracked into gas,some components,including macromolecular n-alkanes,were cracked into medium-or small-sized n-alkanes.The secondary oil cracking of heavy hydrocarbon gases of C2–5to methane mainly occurred between 550°C to 650°C,and the parameters Ln(C1/C2)and Ln(C1/C3),as well as the dry coefficients,increased.Overpressure inhibited the oil cracking process.In the 20 MPa system,the oil conversion rate decreased,the temperature threshold for gas generation rose,and oil cracking was inhibited.Compared with the normal pressure system,high-carbon n-alkanes and other compounds in the 20 MPa pressure system were reserved.Furthermore,the parameters∑C21-/∑22+,Ln(C1/C2),and Ln(C1/C3),as well as the dry coefficients,decreased within the main temperature range.During secondary oil cracking(550°C to 600°C),the Ph/nC18and Pr/nC17decreased.High pressure influenced the evolution of the biomarkers Ts and Tm,C31homohopane,C29sterane,and their related maturity parameters to different extents during oil cracking under different temperature ranges. | CHEN ZhongHong ZHANG ShouChun ZHA Ming | 2014 | Science China Earth Sciences2014，57，3： | 4 |
| 7 | 储层介质环境对深埋油藏原油热裂解影响的初步实验研究显示文摘温度和压力对于原油热裂解的影响已有大量研究,然而,油藏所处介质环境对于原油热裂解的影响研究长期以来并未得到足够重视.本文主要以原油中-高分子量正构烷烃(nC10+)为研究对象,重点考察实验过程中轻烃(nC8-)的生成行为,通过轻烃这个窗口,以热压模拟实验为手段,探视碳酸盐储层和碎屑岩储层环境碳酸盐矿物、黏土矿物、石英的含水体系对于原油热裂解的影响.研究结果表明,不同储层介质环境设定实验温度点热裂解后不同实验系统内nC10+残余量表现为:原油+伊利石+水>原油+蒙脱石+水>原油+水>原油+石英+水>原油+方解石+水.若以原油+水系统为基准,则伊利石和蒙脱石含水系统对原油热裂解有抑制作用,而石英、尤其方解石含水系统对原油热裂解具有促进作用.nC10+稳定碳同位素组成表现为:从原油+伊利石+水、原油+方解石+水、原油+蒙脱石+水、原油+石英+水到原油+水逐渐亏损13C.不同储层介质环境作用的差异性是导致nC10+含量与对应稳定碳同位素值之间无显著协变关系的重要原因.不同实验系统内nC8-生成量等也存在较为显著的差异显示储层介质环境对轻烃生成及其裂解生气和nC10+烃类C—C键断裂及异构化、环烷-芳构化反应均具有重要影响.本项研究对于原油热裂解化学动力学模型准确建立具有一定启示意义. | 肖七林 孙永革 张永东 | 2010 | 科学通报2010，55，29： | 3 |
| 8 | 关于富油盆地深层天然气来源与勘探前景的几点思考——以渤海海域渤中地区为例显示文摘渤海湾盆地烃源岩有机质类型以Ⅰ-Ⅱ型为主,是典型的富油裂陷湖盆。以渤海海域(渤海湾盆地海域部分)渤中地区为例,从天然气来源与成因判识剖析油型盆地干酪根的生气特征以及深层天然气勘探前景。结果表明,对于相同热演化程度的干酪根而言,其热解气的量与烃源岩的氢指数呈正相关关系,而且大部分干酪根热解气在R_(o)=1.5%之前已经生成。生气强度表明,即使对于热演化程度相对偏低的富油盆地,以干酪根热解为主的天然气生气量仍满足大中型气田形成的物质基础。高生产率主导的倾油型母质具有相对重的沉积有机碳同位素组成,因此乙烷碳同位素较重的天然气不一定是来源于偏腐殖型或者煤系烃源岩,也可能来自较高成熟度的倾油型母质。以R_(o)=1.5%为界,早期生成原油深埋裂解整体可分为两个阶段:第一阶段原油裂解轻质化,该阶段油裂解生成的天然气量相对少,第二个阶段轻质油大量裂解生成天然气,表明生油高峰期(浅层)充注的原油在深埋过程具有较高的热稳定性,深层仍可能富集规模轻质油或凝析油气。 | 王奇 郝芳 邹华耀 薛永安 牛成民 | 2023 | 长江大学学报(自然科学版)2023，20，5： | 2 |
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