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Numerical simulation of the dynamic migration mechanism and prediction of saturation of tight sandstone oil

Science China Earth Sciences 2024年第1期67卷 179-195页

作者： Gaohui CAO Mian LIN likuan zhang Lili JI Wenbin JIANG Institute of Mechanics Chinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China

Quantitative characterization of tight sandstone oil migration and accumulation is an emerging research frontier in the field of oil and gas *** this study,a conceptual model containing multiple basic geological elements is developed,and a nonlinear seepage numerical model for tight sandstone oil migration and accumulation is *** effects of the slip effect,overpressure driving force,buoyancy,and capillary force on the migration and accumulation of tight oil are *** results showed that(1)the differences in oil migration and accumulation between tight and conventional reservoirs are reflected in the growth mode of oil saturation,distribution characteristics of oil and water,and extent of the effect of the formation dip angle;(2)the slip effect has a significant impact when the average pore throat radius is less than 150 nm and the overpressure driving force and capillary force are the main mechanical mechanisms controlling oil migration and accumulation in tight sandstone,while the coupling effect of buoyancy,capillary force,and overpressure driving force controls the upper and lower limits of oil ***,a dimensional and dimensionless identification chart for rapidly predicting the oil saturation of tight sandstone is proposed and verified using the measured *** study provides a basis for analyzing the migration and accumulation mechanisms of tight sandstone oil and a new approach for predicting oil ***,we developed digital and visual analysis methods for the migration results,enriching the expression of the dynamics of hydrocarbon accumulation.

关键词： Tight sandstone Migration and accumulation Dynamics Oil saturation Numerical simulation

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Quantitative characterization of pore structure of the CarboniferousePermian tight sandstone gas reservoirs in eastern Linqing depression by using NMR technique

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Petroleum Research 2018年第2期3卷 110-123页

作者： Tao Fang likuan zhang Naigui Liu Liqiang zhang Weimin Wang Lan Yu Chao Li Yuhong Lei School of Geosciences China University of PetroleumShandong266580China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing100029China Key Laboratory of Petroleum Resources Research Chinese Academy of SciencesBeijing100029China Institute of Quantum Electronics School of Electronics Engineering and Computer SciencePeking UniversityBeijing100871China Research Institute of Exploration and Development Sinopec Shengli Oilfield CompanyShandong257000China

Micro-nano scale pores can accurately and fastly be measured by the nuclear magnetic resonance(NMR)technique,which provides a new method to quantitatively characterize pore structures in tight *** on the method of calibration of mercury pressure data for NMR T_(2) spectrum,for the measurement inaccuracy due to the mercury saturation less than 100%in tight sandstone,the mercury pressure curve and T_(2) spectrum is used to cumulate from the maximum pore on the right boundary to the small pores in the left,the range of pore-throat radius measured by the mercury injection in the leftward cumulative curve is selected as a comparable interval of NMR pore-throat radius,and the longitudinal interpolation method and the least square method are utilized to construct the distribution curve of pore-throat radius transformed by T_(2) *** modified method is used to obtain NMR T_(2) spectrum,conversion coefficient of pore-throat radius and pore-throat radius distribution of the Carboniferous-Permian tight sandstone gas reservoirs in the eastern Linqing depression,and characteristics of reservoir pore structures are quantitatively investigated;in addition,in combination with analysis of thin section and scanning electron microscopy,the reservoir effectiveness and cause of the pore structure variability in the tight sandstone are also well *** results show that the NMR pore-throat radius curve obtained by the modified method has a high consistency with the mercury injection curve,and the NMR test accuracy of tight sandstone is significantly *** the study area,the pore-throat radius of the Carboniferous-Permian tight sandstone mainly ranges from 0.002 to 2 mm,the pore is generally submicro-nano scale,but the pore-throat radius distribution of different types of sandstone varies *** lithic quartz sandstone is rich in siliceous matter and poor in plastic detritus and matrix,generally dominated by submicro-scale pore-throats including m

关键词： NMR T_(2)spectrum Mercury injection Conversion coefficient Pore-throat Rock fabric Microfacies Tight sandstone Linqing depression

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泥岩化学压实作用的超压响应与孔隙压力预测

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中国矿业大学学报 2020年第5期49卷 951-973页

作者：李超罗晓容张立宽中国科学院地质与地球物理研究所北京100029 中国科学院地球科学研究院北京100029

为探索泥岩化学压实作用的增压机制及其超压响应特征,结合国内外相关研究,对泥岩化学压实作用与超压发育关系、化学压实阶段超压响应特征以及孔隙压力预测方法进行了系统总结,分析了东营凹陷泥岩化学压实作用在孔隙压力预测中的意义.认... 详细信息

为探索泥岩化学压实作用的增压机制及其超压响应特征,结合国内外相关研究,对泥岩化学压实作用与超压发育关系、化学压实阶段超压响应特征以及孔隙压力预测方法进行了系统总结,分析了东营凹陷泥岩化学压实作用在孔隙压力预测中的意义.认为泥岩化学压实作用以黏土矿物转化为主导机制,通过改变泥岩的微观结构及岩石物理属性,化学压实作用影响了超压的发育及其测井响应,建立不同压实阶段正常压实趋势线是有效判识超压成因机制、准确预测孔隙压力的基础.研究结果表明:1)泥岩压实过程可以划分为机械压实阶段(100℃),黏土矿物转化(尤其是蒙脱石向伊利石转化)控制了泥岩的化学压实行为;2)泥岩化学压实的增压效应主要包括3个方面:形成垂直于最大有效应力方向排列的黏土颗粒组构,促进泥岩压实、导致自生胶结物沉淀降低泥岩渗透率,增强体系封闭性、使得泥岩发生骨架弱化作用,引起有效应力转移;3)在有效应力-孔隙度/密度和声波时差/电阻率-密度交会图中,化学压实导致的超压表现出非弹性卸载特征,即随着有效应力减小,呈现出孔隙度降低,而声波时差和密度同时增大的测井响应;4)适用于化学压实阶段的孔隙压力预测方法包括伊利石压实曲线法、纵横波速度比法、偏移-修正法、Dutta压实模型法以及两步测井预测法等;5)东营凹陷泥岩黏土矿物快速转化深度与超压顶深(2 000~2 800 m)大致相同,超压发育及测井响应与化学压实密切相关,基于化学压实正常趋势线预测的深部(>3 000 m)孔隙压力与实测压力更接近.

关键词：黏土矿物转化化学压实作用超压测井响应异常流体压力孔隙压力预测

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油气成藏动力学研究方法与应用

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地质科学 2012年第4期47卷 1188-1210页

作者：罗晓容张立宽雷裕红中国科学院油气资源研究重点实验室中国科学院地质与地球物理研究所北京100029

油气成藏过程的动力学研究是以一期油气成藏过程中从油气源到油气藏的统一动力环境系统为单元,定量研究油气供源、运移、聚集的机理、控制因素和动力学过程。以此为基础有望解决油气成藏定量的动力学研究中的几个关键问题。输导层概念... 详细信息

油气成藏过程的动力学研究是以一期油气成藏过程中从油气源到油气藏的统一动力环境系统为单元,定量研究油气供源、运移、聚集的机理、控制因素和动力学过程。以此为基础有望解决油气成藏定量的动力学研究中的几个关键问题。输导层概念的提出及砂岩输导层模型基本工作程序的建立,形成了可以利用通常的物性参数进行输导层量化表征的方法,实现了对油气运移通道的量化表征;采用断层连通概率的概念对各种参数表征断层开启性的能力进行比较和评价,探讨了各种地质参数的有效性和代表性,建立起了断层启闭性表征参数的评价方法;采用数值模拟方法,耦合运聚动力与输导体系,实现成藏系统内油气运移过程的模拟分析;以运移途中烃损失量估算为基础,建立新的物质平衡方法,以模拟获得的运移路径为线索,评估油气在研究不同方向上的运移聚集量,展现油气运移的路径特征、运移方向及运移量,初步形成了以油气成藏动力学成因为基础的油气资源预测方法。

关键词：油气成藏动力学定量研究输导层断层封闭性油气运移

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Characteristics of silty laminae in zhangjiatan Shale of southeastern Ordos Basin,China:Implications for shale gas formation

Characteristics of silty laminae in Zhangjiatan Shale of sou...

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中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： Yuhong Lei Xiaorong Luo Xiangzeng Wang Lixia zhang Chengfu Jiang Wan Yang Yuxi Yu Ming Cheng likuan zhang Key Laboratory of Petroleum Resources Research Institute of Geology and GeophysicsChinese Academy of Sciences Shaanxi Yanchang Petroleum(Group) Co. Ltd. State Department of Geological Science and Engineering Geology and Geophysics ProgramMissouri University of Science and Technology University of Chinese Academy of Sciences

Shale oil and gas have been discovered in the lacustrine organicrich zhangjiatan Shale of the Upper Triassic Yanchang Formation,Ordos Basin,*** observations indicate abundant silty laminae in the producing *** study documents the stratigraphic distribution of silty laminae and their relationship with interlaminated clay *** type,structure,and characteristics of pores and mineral composition of silty laminae were observed and analyzed through thin section and scanning electron microscopy,X-ray diffraction,low-pressure CO and N adsorption,mercury porosimetry,and helium *** from silty laminae are compared with those of clayey *** frequency and thickness of silty laminae vary over a wide *** thickness ranges from 0.2 to 4 mm and is 1.5 mm on average;the frequency ranges from 4 to 32 laminae/m and is 23 laminae/m on *** thickness percentage of silty laminae in the measured segments ranges from 6%to 17%.Silty laminae consist of quartz,feldspar,mixed-layer montmorillonite,and *** comparison to clayey laminae,non-clay detrital grains are larger,quartz and feldspar are more common,and clay minerals are less *** in silty laminae are primary interparticle,dissolutional,intercrystalline,and microfracture ***(2-50 nm in diameter) and macropores(50 nm-1 μm) are common,whereas,micropores(<2 nm) are rare;the distribution of pore diameters is ***,microscopic pores with a diameter commonly smaller than 100 nm are common in clayey ***,pore volume and surface area of micropores in silty laminae are less than those in the adjacent clayey laminae,and vice versa for meso- and *** porosity of shales increases with the proportion of silty laminae in the *** silty laminae provide the storage space and flow conduit for oil and gas,and they play a significant role in the migration,accumulation,occurrence,and amount of gas in the shales.

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Testing oil saturation distribution in migration paths using MRI

Testing oil saturation distribution in migration paths using...

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中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： Jianzhao Yan Xiaorong Luo Weimin Wang Fang Chen Renaud Toussaint Jean Schmittbuhl Guy Vasseur likuan zhang Key Laboratory of Petroleum Resources Research Institute of Geology and GeophysicsChinese Academy of Science School of Electronics Engineering and Computer Science Peking University State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics.Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences IPGS(Institute de Physique du Globe de Strasbourg)CNRS(Centre National de la Recherche Scientifique) University of Strasbourg5 rue DescartesStrasbourg67000 France Key laboratory of Petroleum Resources Research Institute of Geology and GeophysicsChinese Academy of Science

Magnetic Resonance Imaging(MRI) method allows to observe the distribution of different fluids in situ in porous media,and to measure oil and water *** this technique has great advantages compared to others,there remains large space for assessing the method and improving the accuracy of measurement. Using MRI,the oil secondary migration paths are scanned to measure the saturation distribution during the laboratory *** resulting map can be calibrated using a device with the same pore structure as the probed sample and fully saturated with *** device is scanned with the probed sample at the same time in order to calibrate the *** Spm-echo multi-slices sequence(SEMS) is adopted for MRI to ensure that the oil saturation in migration paths is accurately *** relevant spatial resolution of the mapping is defined according to the concept of REV(representative elementary volume).The oil saturation resulting from data obtained using different image formats are compared and the resulting saturation evaluation is compared to direct bulk saturation *** comparison demonstrates that the calculated MRI oil saturation using DICOM image format is quite accurate,with a relative error less than 2%.

关键词： MRI Oil saturation Calibration DICOM Migration path

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海洋天然气水合物成藏系统研究进展及发展方向

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石油学报 2021年第6期42卷 801-820页

作者：雷裕红宋颖睿张立宽苗来成程明刘乃贵中国科学院地质与地球物理研究所中国科学院油气资源研究重点实验室北京100029 中国科学院地球科学研究院北京100029 中国科学院大学北京100049

天然气水合物成藏系统的研究对于认识具有强非均质性的天然气水合物的资源分布、预测其甜点、提高其勘探成效具有重要的意义。通过综合分析天然气水合物在成藏条件、成藏要素和成藏模式等方面的研究认识和勘探成果,综述了天然气水合物... 详细信息

天然气水合物成藏系统的研究对于认识具有强非均质性的天然气水合物的资源分布、预测其甜点、提高其勘探成效具有重要的意义。通过综合分析天然气水合物在成藏条件、成藏要素和成藏模式等方面的研究认识和勘探成果,综述了天然气水合物成藏系统在气源、稳定带特征及影响因素、储层类型与特征、运移通道类型和成藏模式等方面的研究新进展。天然气水合物的气源可分为生物气、深部热解气和混合气3种类型;水合物的储层类型包括软泥、粉砂质泥和粉砂等多种类型;在粒度较粗的储层中,水合物的含气饱和度往往相对较高;断层、裂隙、底辟构造、气烟囱和高渗透性地层等是天然气水合物的有效运移通道。前人依据气源及其与水合物稳定带的配置关系、水合物的生成速度与分解速度的消长关系、水合物形成的主控因素、运移通道的类型等建立了多种水合物成藏模式,但对于成藏过程中各成藏要素的时空演化及耦合关系、成藏效率的定量评价等研究仍不足,有必要将天然气从气源灶运移至稳定带的动力学过程与稳定带内天然气的运移、聚集、分解和散失的动力学过程有机结合起来开展研究。采用成藏动力学定量研究的思路和方法,应用大数据和人工智能等新技术来定量表征天然气水合物的成藏要素及其时空演化过程,利用数值模拟方法定量研究在气源灶、运移通道、稳定带和储层耦合条件下的天然气水合物的运移、聚集、分解、散失过程是未来天然气水合物成藏系统研究的发展方向。

关键词：天然气水合物气源运移通道形成机理成藏模式

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An experimental study of secondary oil migration in a three-dimensional tilted porous medium

An experimental study of secondary oil migration in a three-...

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中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： Jianzhao Yan Xiaorong Luo Weimin Wang Renaud Toussaint Jean Schmittbuhl Guy Vasseur Fang Chen Alan Yu likuan zhang Key Laboratory of Petroleum Resources Research Institute of Geology and GeophysicsChinese Academy of Science School of Electronics Engineering and Computer Science Peking University IPGS(Institut de Physique du Globe de Strasbourg) CNRS(Centre National de la Recherche Scientifique)University of Strasbourg5 rue DescartesStrasbourgFrance 67000 IPGS(Institut de Physique du Globe de Strasbourg) CNRS(Centre National de la Recherche Scientifique)University of Strasbourg5 rue DescartesStrasbourgFrance 67084 State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and MathematicsChinese Academy of Science

A three-dimensional physical experiment was conducted to study secondary oil migration under an impermeable inclined ***-colored oil was released continuously at a slow rate of about 0.1 mL/min from a point at the base of an initially water-saturated porous *** buoyancy as a primary driving force,a vertical cylindrical shape of an oil migration pathway was observed first,and then a layer-shaped lateral migration pathway was observed beneath the top inclined sealing plate once the oil cluster had reached the top cap. Magnetic resonance imaging was used to observe the migration processes-for example,morphology of the migration pathway, intermittency of oil bubbles,and variation of oil saturation within the migration *** show that the snap-off phenomenon(related to fast local imbibition processes) occurred more commonly during vertical migration than it did during lateral *** lateral migration pathway that parallels to the top inclined cap has a typical vertical thickness of 2 to 4 cm(0.8-1.6 in.)(i.e.,roughly 40-80 pores).This thickness is consistent with the prediction derived from scaling laws related to pore size and Bond *** the lateral migration direction,the sectional area and the horizontal width of the migration pathway fluctuate significantly,although the average oil saturation along the pathway remains almost the *** stopping the initial oil injection,the sectional area of the migration pathway shrinks ***, we believe that this significant shrinking of the migration pathway is the main reason why only a relatively small volume of oil and gas has been lost during secondary migration.

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沉积正演模拟在准噶尔盆地永进地区西山窑组辫状河三角洲砂体分布预测中的应用

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天然气地球科学 2024年第11期35卷 2064-2077页

作者：张增宝张立宽严一鸣张立强中国石化胜利油田分公司山东东营257062 中国科学院地质与地球物理研究所油气资源研究重点实验室北京100029 中国石油大学(华东)地球科学与技术学院山东青岛266580

准噶尔盆地腹部永进地区深层侏罗系西山窑组勘探潜力大,但储层非均质性强、钻井少、地震资料品质差,利用地震资料预测有利储层难度大。采用沉积正演模拟方法,基于沉积背景和模型参数分析,构建了永进地区西山窑组辫状河三角洲相的四维沉... 详细信息

准噶尔盆地腹部永进地区深层侏罗系西山窑组勘探潜力大,但储层非均质性强、钻井少、地震资料品质差,利用地震资料预测有利储层难度大。采用沉积正演模拟方法,基于沉积背景和模型参数分析,构建了永进地区西山窑组辫状河三角洲相的四维沉积学模型,并预测了井间有利相带和砂体分布。研究结果表明:西山窑组发育4个湖泛面,可划分为4个四级层序;层序格架和孢粉含量垂向变化反映湖平面演化主要经历了7次湖退和6次湖侵;西山窑组沉积时期为弱氧化—弱还原环境,古水体深度较浅,平均古水深约为34.69 m;系统试错法模拟确认当河流水体沉积物浓度参数K为0.08 g/L时,6口井地层厚度吻合度均大于89%,且单井点岩性吻合度最高。沉积正演模拟揭示西山窑组沉积砂体叠加方式与规模在不同时期发生显著变化,早期发育垂向加积为主的大型河流沉积,河道复合砂体规模大,随后河流系统发育规模缩小,而沉积晚期以小型、快速横向迁移、分布范围广的河流为特征;辫状河三角洲平原分流河道是研究区优势储层相带,Y1井—Y3井和Y2井—Y6井等分流河道发育概率较高的地区可能是有利勘探目标。展示的案例研究表明,沉积正演模拟可为低勘探程度的深层储层预测提供有效工具。

关键词：沉积正演模拟有利砂体辫状河三角洲西山窑组永进地区

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以高科技为先导开辟创业路——访河北以岭医药集团董事长吴以岭教授

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中国卫生产业 2004年第2期1卷 14-19页

作者：张立宽本刊记者

我国的中医药学历史悠久,博大精深.历代名家及其不朽名作构成了它灿烂辉煌的历史.当人类步入21世纪,随着现代科学技术的迅猛发展,我国医药产业正发生革命性的转变.作为科技先导型医药产业代表的河北以岭医药集团,依靠强大的科技实力、... 详细信息

我国的中医药学历史悠久,博大精深.历代名家及其不朽名作构成了它灿烂辉煌的历史.当人类步入21世纪,随着现代科学技术的迅猛发展,我国医药产业正发生革命性的转变.作为科技先导型医药产业代表的河北以岭医药集团,依靠强大的科技实力、全新的体制框架,以中医学术研究为基础,以高科技为先导,以产业化、规模化、市场化为途径,走出一条成功的发展道路,在短短10年内,形成了科研、教学、临床、生产、营销一体化的现代医药产业集团,在打造国药品牌的道路上迈出了坚定的步伐.记者怀着强烈的好奇心,通过采访河北以岭医药集团董事长吴以岭教授及其员工,亲身感受了吴以岭教授的创业理念和集团的企业文化.

关键词：河北以岭医药集团吴以岭中医药药物

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