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| 1 | 海相页岩储层微观孔隙非均质性及其量化表征显示文摘为加深储层微观非均质性影响页岩气赋存运移的认识,以渝东南地区五峰—龙马溪组页岩储层为例,采用场发射电子显微镜、压汞、液氮吸附等手段,在微观非均质性特征提炼总结的基础上,针对微观尺度下孔隙的非均质性特征展开进一步实验与理论研究.通过图像信息处理、结构参数遴选及分形分维建模等手段,总结了储层孔隙在成因类型、孔隙结构、孔隙网络及尺度差异上的非均质性特征,利用面孔率、变异系数、孔隙曲折度、分形分维值等评价参数,构建了页岩孔隙非均质性表征评价模型,进而实现了页岩储层孔隙非均质性特征的单样品定量评价与综合定量评价,认为页岩储层孔隙在孔隙发育特征及网络组合特征等方面存在的显著非均质性,控制着气体储集能力、渗流方向.研究结果表明:该储层孔隙非均质性强,发育有微米渗流网络、基质吸附-渗流孔隙网络、夹层或砂质纹层孔隙网络等不同孔隙网络,并控制着储层品质的优劣;渗流通道在定向性上存在的非均质性及吸附孔隙空间发育的微观不均一,成为影响该储层储集、释放性能的关键因素.综合评价分析认为,赋孔集中在有机质纳米孔(有机孔隙贡献度50%以上)、脆性矿物质量分数高于40%、孔隙曲折度小于40、具有微米渗流网络与基质吸附-渗流孔隙网络两种孔隙网络的组合类型(孔隙-微裂隙配置关系好)的储层有较好的储层物性和勘探开发潜力. | 赵迪斐 郭英海 朱炎铭 Geoff WANG 崇璇 胡鑫蒙 | 2018 | 中国矿业大学学报2018，47，2： | 63 |
| 2 | 高温高压条件下深部煤层气吸附行为显示文摘为了对深部煤层吸附特性进行分析,以鄂尔多斯盆地东部主要煤层为对象,展开4组不同温度条件下煤样的高压等温吸附实验。从温度、压力、煤级等地质要素方面入手,研究较高温压条件下煤样的吸附特征。同时,通过对比分析各地质因素对吸附行为的影响,比较深部煤层吸附行为与浅部煤层吸附行为的差异性。结果表明:深部煤层的吸附特性主要受温度、压力的控制;高温条件下煤样对CH4的吸附量大大减少,且煤级、煤岩显微组分、灰分产率以及水分含量对吸附性能的影响已明显小于浅部煤层,温度、压力成为控制吸附量的决定因素。在100℃条件下,吸附量到达某一压力后随着压力的增大煤样吸附量下降,分析认为由于在此温压下,随着压力的增加,吸附相与游离相气体的密度差逐渐减小,超临界吸附已不再符合Langmuir等温吸附模型。 | 赵丽娟 秦勇 Geoff Wang 吴财芳 申建 | 2013 | 高校地质学报2013，19，4： | 38 |
| 3 | Numerical description of coalbed methane desorption stages based on isothermal adsorption experiment显示文摘Quantitative description of desorption stages of coalbed methane is an important basis to objectively understand the production of coalbed methane well,to diagnose the production state,and to optimize the management of draining and collection of coalbed methane.A series of isothermal adsorption experiments were carried out with 12 anthracite samples from 6 coalbed methane wells located in the south of the Qinshui Basin,based on the results of isothermal adsorption experiments,and an analytical model was developed based on the Langmuir sorption theory.With the model,a numerical method that adopts equivalent desorption rate and its curve was established,which can be used to characterize the staged desorption of coalbed methane.According to the experimental and numerical characterizations,three key pressure points determined by the equivalent desorption rate curvature that defines pressure-declining desorption stage,have been proposed and confirmed,namely,start-up pressure,transition pressure and sensitive pressure.By using these three key pressure points,the process of coalbed methane desorption associated with isothermal adsorption experiments can be divided into four stages,i.e.,zero desorption stage,slow desorption stage,transition desorption stage,and sensitive desorption stage.According to analogy analysis,there are differences and similarities between the processes of coalbed methane desorption identified by isothermal adsorption experiments and observed in gas production.Moreover,it has been found that larger Langmuir volume and ratio of Langmuir constants are beneficial to earlier advent of steady production stage,whereas it is also possible that the declining production stage may occur ahead of schedule. | ZHANG Zheng QIN Yong Geoff X WANG FU XueHai | 2013 | Science China Earth Sciences2013，56，6： | 25 |
| 4 | 龙马溪组页岩黄铁矿微观赋孔特征及地质意义显示文摘随着页岩气地质理论的不断完善,页岩气储层研究也更加精细、量化,黄铁矿作为页岩气储层普遍发育的物质成分,其矿物学特征、赋孔特征与地质意义引起了关注。为细化、量化对页岩储层黄铁矿的地质认识,通过氩离子抛光—场发射扫描电镜(FE-SEM)、能谱(EDS)、X射线衍射(XRD)等实验手段结合图像处理技术(Image Processing),以渝东南地区龙马溪组中下部优质页岩储层样品为例,探究页岩储层黄铁矿的发育类型和特征,量化表征评价页岩基质莓状黄铁矿在纳米尺度下的孔隙发育特征,并在此基础上讨论黄铁矿的页岩气地质意义,尤其是其储层意义。实验结果表明,莓状黄铁矿是龙马溪组页岩基质中最主要的黄铁矿类型,集合体直径介于3~10μm之间;莓状黄铁矿集合体内部晶体间有机质纳米孔发育,孔隙直径主要分布在100 nm以下,在页岩储层孔隙分类中莓状黄铁矿孔隙应归入有机成因孔隙类型;莓状黄铁矿集合体及其控制的有机质可以为页岩储层贡献0.7%~7%的孔隙比例,是对储集空间具有正贡献的、不应忽视的孔隙类型;基于图像处理技术(Image Processing)的孔隙分类表征与评价技术可以为储层孔隙研究提供新思路,是实现不同类型孔隙量化研究的可行方法。龙马溪组基质黄铁矿既可以贡献一定储集空间,也与有机质具有成因联系,可以为优质储层发育机理研究与优质储层勘探预测提供依据,在页岩气储层研究与勘探开发中具有重要地质意义。 | 赵迪斐 郭英海 朱炎铭 Geoff Wang 刘静 崇璇 张敬霞 | 2018 | 沉积学报2018，36，5： | 20 |
| 5 | 层序地层格架及其对页岩储层发育特征的影响--以四川盆地龙马溪组页岩为例显示文摘为研究海相页岩沉积层序及其对页岩储层发育特征的控制作用,通过露头、岩芯研究及地化测试、有机质测试、矿物组分测试、孔隙发育特征测试等室内分析测试,结合测井小波分析,综合建立四川盆地龙马溪组的层序地层格架,并结合储层发育特征探讨层序与储层发育特征的关系。研究表明:研究区龙马溪组发育有两个三级层序;结合多口钻孔通过测井小波分析构建了研究区的高分辨率层序地层格架,识别出四个中期旋回A^D;对比各旋回内的储层发育特征,旋回A储层岩石学特征与旋回B^D存在显著差异,表现为储层有机质含量更高、水平层理更为发育、脆性矿物含量更高、微观储集空间(微—纳米级孔隙与微裂隙)发育程度更好,显示了层序旋回与储层物质成分、结构、力学脆性、含气性特征的显著相关关系,说明层序旋回是储层物性与含气性等发育特征的重要影响因素。基于前述研究,讨论了层序地层格架对储层发育的控制机理,层序格架下各旋回内沉积环境与沉积条件的差异导致储层沉积构造、物质成分与分布的差异,进而影响储层物性与含气性等特征;沉积盆地内高分辨率层序格架的建立可以为储层对比、评价与资源预测提供时间框架。建立了通过测井小波分析高分辨率层序地层格架进行储层分析对比的新方法,提出了基于储层小层分析建立页岩储层精细评价的新工作流程,有助于减少人为因素干扰,可以为页岩优质储层成因研究及其预测评价提供科学依据与新思路。 | 赵迪斐 郭英海 Geoff Wang 李冠霖 曾春林 焦伟伟 | 2020 | 沉积学报2020，38，2： | 18 |
| 6 | 页岩储层成岩作用及其对储层脆性的影响——以渝西地区五峰组—龙马溪组深层页岩为例显示文摘页岩粒度细小、岩石致密、微观非均质性显著,在成岩作用改造下发育形成页岩气储层,成岩作用的研究可以为优质页岩储层发育机理提供依据。以渝西地区綦江观音桥剖面、南川泉浅1井、南川三泉剖面、大足Z-203井等代表性剖面、钻孔为例,通过X射线衍射、氩离子抛光—场发射扫描电镜、能谱、岩石薄片/光片显微观察、有机地球化学测试、力学特征测试等手段,对储层成岩作用及其对储层力学脆性的影响展开系统研究。结果表明,研究区五峰组—龙马溪组页岩物质组分、岩石结构、力学性质存在层段性差异,成岩作用阶段介于晚成岩作用阶段至极低级变质作用阶段之间;储层主要成岩作用类型可以划分为压实作用等物理性成岩作用、矿物溶蚀作用等矿物相关化学性成岩作用和有机质生烃作用等有机质相关化学性成岩作用三类。研究区五峰组—龙马溪组底部存在部分脆性矿物高于80%的超高脆性矿物含量层段,碳质—硅质富层理页岩在特殊储层成岩作用的影响下形成大量自生微晶石英,构成以微晶石英+赋孔有机质为主的显微物相组合,兼具良好的力学脆性与储集能力,而其他层段缺乏持续演化不断形成微晶石英的物质基础。储层成岩作用发生的物质基础、岩石结构、类型、作用强度在层段间的差异,是储层脆性矿物与力学性质差异的关键影响因素,应纳入储层评价与优质储层机理研究的关注范畴。 | 赵迪斐 焦伟伟 魏源 张海杰 李利格 郭英海 Geoff Wang | 2021 | 沉积学报2021，39，4： | 14 |
| 7 | Desorption-diffusion model and lost gas quantity estimation of coalbed methane from coal core under drilling fluid medium显示文摘The differences of coalbed methane(CBM) desorption-diffusion from coal drilling-core under various drilling fluid medium are not considered in the present calculating methods of lost CBM quantity,which leads possibly to the inaccuracy of CBM quantity in coal seam.Here we took the desorption of CBM from coal core under drilling fluid medium as a pressure-swing process,and based on the Langmuir equation and Fick-first law,established the desorption-diffusion model and numerical modeling method of lost gas(including free CBM) calculation in coal core under various drilling fluid mediums through physical simulation test and by considering comprehensively primary factors.The results showed that the physical simulated t-Qt curves can be rightly fitted by the numerical modeling data,which indicated the ultimate desorption quantity from the numerical modeling was adjacent to that from the physical simulation as a whole.It was found that the lost CBM quantity from the modeling method was generally higher than that from the direct method when lost time was relatively long.Thus,we sug-gest that it is necessary to emend the active China national standard through further investigation,since the lost CBM quantity from coal drilling-core was generally underestimated using the method in the current standard. | Geoff WANG | 2010 | Science China Earth Sciences2010，53，4： | 13 |
| 8 | 基于分形建模的高煤级煤孔隙结构特征量化表征——以阳泉矿区山西组煤样为例显示文摘以阳泉矿区山西组煤样为例,根据高压压汞及分形建模,获取高煤级煤孔隙结构特征参数,结合氩离子抛光—场发射扫描电镜,识别微—纳米尺度的孔隙发育类型及结构特征,明确储集空间构成及孔隙结构对煤中气体的影响,构建气体行为与孔隙结构的关系。结果表明:阳泉矿区山西组高煤级煤储层孔隙结构复杂,在不同发育尺度具有不同的分形特征;基于孔隙结构特征、分形特征和多孔介质甲烷的分子动力学特征,将孔隙划分为3个大类(超微吸附孔隙、纳米扩散孔隙和微纳米渗流孔隙)和5个小类(超微孔隙、分子扩散孔隙、Knudsen扩散孔隙、层流滑移孔隙和紊流滑移孔隙),将基质孔隙气体的运移方式划分为吸附相—固溶相扩散场、Knudsen扩散场、层流场及紊流场,多数高煤级煤样品层流滑移孔隙的不发育表明层流场的弱势发育。量化高煤级煤储层微观储集空间,建立孔隙结构与煤层气渗流、运移的关系,为高煤级煤层气勘探开发、地质理论研究提供依据。 | 赵迪斐 郭英海 WANG GEOFF 刘静 王琳琳 | 2019 | 东北石油大学学报2019，43，3： | 8 |
| 9 | 钻井液条件下煤芯煤层气解吸-扩散模型及逸散量求取显示文摘现行各类煤芯煤层气逸散量推算方法,均未考虑煤芯煤层气在不同钻井液环境下解吸过程的差异,可能导致煤层含气量测定结果出现偏差.为此,本文将钻井液条件下煤芯煤层气解吸视为一个变压解吸过程,以Langmuir方程和Fick第一定律为基础,综合考虑钻井液条件下影响煤层气解吸扩散的主要因素,通过物理模拟实验和理论探讨,建立了考虑游离气在内的钻井液条件下煤芯煤层气解吸-扩散模型及逸散量数值模拟求取方法.结果显示:数值模拟能够较为准确地拟合t-Qt物理模拟曲线,提钻过程最终解吸量数值模拟值和物理模拟值总体较为接近.通过对实测解吸数据求取逸散量发现,当逸散时间较长时,数值模拟结果普遍大于直接法计算结果.作者由此认为,采用中国目前方法推得的煤芯煤层气逸散量普遍偏低,有必要在深入研究基础上考虑对中国现行国家标准予以修订. | 杨兆彪 秦勇 王兆丰 Geoff WANG 吴财芳 | 2010 | 中国科学(D辑)2010，40，2： | 7 |
| 10 | 渝东南地区五峰组-龙马溪组页岩笔石沉积特征及其对优质页岩气储层的指示意义显示文摘笔石是我国五峰组-龙马溪组页岩中的主要古生物大化石类型,以渝东南地区YC-4井、QQ-1井、YC-6井、YC-8井等为例,结合手标本观察、岩心研究、储层室内实验测试等手段,综合展开五峰组-龙马溪组页岩储层笔石沉积特征、笔石带序列、笔石沉积环境意义及储层意义研究。结果表明:渝东南地区五峰组-龙马溪组页岩笔石主要以薄膜状有机质保存于层理面间,五峰组页岩笔石动物群以叉笔石-双笔石动物群过渡至晚期对笔石动物群,龙马溪组沉积期则为单笔石动物群;通过钻孔研究,建立了渝东南地区笔石带序列,在五峰组、龙马溪组分别识别出3个以及6~8个笔石带,为储层精细对比与评价预测提供了时间框架;受控于沉积环境与沉积条件,五峰组-龙马溪组沉积期笔石经历灭绝→重新演化→结构复杂化的演化过程,其化石结构、演化、丰度、赋存状态、沉积方式发生转变,向上笔石定向性增强、丰度下降、结构保存完整程度下降,具有环境指示意义;笔石体有机质发育丰富的有机孔隙,其作为富笔石水平层理等沉积构造的一部分,也具有页岩气渗流通道的作用。综上,海相页岩中的笔石沉积特征与结构特征可以作为指示、预测优质页岩储层分布的重要依据,具有页岩气地质意义。 | 赵迪斐 郭英海 Geoff Wang 白万备 曾春林 焦伟伟 刘静 | 2020 | 河南理工大学学报(自然科学版)2020，39，1： | 7 |
| 11 | 低成熟度富有机质页岩微观孔隙结构特征表征——以广东茂名盆地油柑窝组为例显示文摘以广东茂名盆地油柑窝组富有机质页岩为例,采用氩离子抛光—场发射扫描电镜(AIP FESEM)图像处理技术(Image Processing)、MATLAB软件,对微观孔隙进行定量统计,预测页岩微观孔隙发育特征。结果表明:研究区样品大量发育微纳米孔,包括有机质孔、粒间孔、粒内孔及微裂隙。页岩孔隙度低,约为1.56%。孔隙中,粒间孔最发育,孔隙率占比为94.82%,孔径为0.01~2.40μm;其次为有机质孔,孔隙率占比为4.22%,孔径为0.01~10.00μm,其中60%的孔隙孔径在50 nm以下;粒内孔最不发育,孔隙率占比小于1.00%。受沉积环境及储层成岩作用的影响,油柑窝组有机质及有机孔隙演化程度低,有机质成熟度介于0.40%~0.55%,与龙马溪组页岩储层相比,发育最广泛的纳米孔类型为矿物孔隙而非有机质孔,有机质质量分数与热演化程度是塑造优质页岩储层孔隙系统的关键因素。该结果可为低成熟度富有机质页岩储层孔隙结构演化提供依据。 | 赵迪斐 郭娟 梁孝柏 王培清 刘蕾 WANG Geoff 郭英海 | 2020 | 东北石油大学学报2020，44，1： | 6 |
| 12 | Towards a global One Health index: a potential assessment tool for One Health performance显示文摘Background:A One Health approach has been increasingly mainstreamed by the international community, as it provides for holistic thinking in recognizing the close links and inter-dependence of the health of humans, animals and the environment. However, the dearth of real-world evidence has hampered application of a One Health approach in shaping policies and practice. This study proposes the development of a potential evaluation tool for One Health performance, in order to contribute to the scientific measurement of One Health approach and the identification of gaps where One Health capacity building is most urgently needed.Methods:We describe five steps towards a global One Health index (GOHI), including (i) framework formulation;(ii) indicator selection;(iii) database building;(iv) weight determination;and (v) GOHI scores calculation. A cell-like framework for GOHI is proposed, which comprises an external drivers index (EDI), an intrinsic drivers index (IDI) and a core drivers index (CDI). We construct the indicator scheme for GOHI based on this framework after multiple rounds of panel discussions with our expert advisory committee. A fuzzy analytical hierarchy process is adopted to determine the weights for each of the indicators.Results:The weighted indicator scheme of GOHI comprises three first-level indicators, 13 second-level indicators, and 57 third-level indicators. According to the pilot analysis based on the data from more than 200 countries/territories the GOHI scores overall are far from ideal (the highest score of 65.0 out of a maximum score of 100), and we found considerable variations among different countries/territories (31.8–65.0). The results from the pilot analysis are consistent with the results from a literature review, which suggests that a GOHI as a potential tool for the assessment of One Health performance might be feasible.Conclusions:GOHI—subject to rigorous validation—would represent the world’s first evaluation tool that constructs the conceptual framework from a holistic perspective of One Health. Future application of GOHI might promote a common understanding of a strong One Health approach and provide reference for promoting effective measures to strengthen One Health capacity building. With further adaptations under various scenarios, GOHI, along with its technical protocols and databases, will be updated regularly to address current technical limitations, and capture new knowledge. | Xiao-Xi Zhang Jing-Shu Liu Le-Fei Han Shang Xia Shi-Zhu Li Odel YLi Kokouvi Kassegne Min Li Kun Yin Qin-Qin Hu Le-Shan Xiu Yong-Zhang Zhu Liang-Yu Huang Xiang-Cheng Wang Yi Zhang Han-Qing Zhao Jing-Xian Yin Tian-Ge Jiang Qin Li Si-Wei Fei Si-Yu Gu Fu-Min Chen Nan Zhou Zi-Le Cheng Yi Xie Hui-Min Li Jin Chen Zhao-Yu Guo Jia-Xin Feng Lin Ai Jing-Bo Xue Qian Ye Liz Grant Jun-Xia Song Geoff Simm Jürg Utzinger Xiao-Kui Guo Xiao-Nong Zhou | 2022 | Infectious Diseases of Poverty2022，11，3： | 3 |
| 13 | Ecosystem health towards sustainability显示文摘Ecosystems are becoming damaged or degraded as a result of stresses especially associated with human activities.A healthy ecosystem is essential to provide the services that humans and the natural environment require and has tremendous social and economic value.Exploration of the definition of ecosystem health includes what constitutes health and what it means to be healthy.To evaluate ecosystem health,it is necessary to quantify ecosystem conditions using a variety of indicators.In this paper,the main principles and criteria for indicator selection,classification of indicators for different kinds of ecosystems,the most appropriate indicators for measuring ecosystem sustainability,and various methods and models for the assessment of ecosystem health are presented.Drivers,sustainability,and resilience are considered to be critical factors for ecosystem health and its assessment.Effective integration of ecological understanding with socioeconomic,biophysical,biogeochemical,and public-policy dimensions is still the primary challenge in this field,and devising workable strategies to achieve and maintain ecosystem health is a key future challenge. | Yonglong Lu Ruoshi Wang Yueqing Zhang Hongqiao Su Pei Wang Alan Jenkins Rober C.Ferrier Mark Bailey Geoff Squire | 2015 | Ecosystem Health and Sustainability2015，1，1： | 3 |
| 14 | Efficacy, safety and tolerability of bosentan in Chinese patients with pulmonary arterial hypertension显示文摘 | Zhi-Cheng Jing Geoff Strange Xian-Yang Zhu Da-Xin Zhou Jie-Yan Shen Hong Gu Zhen-Kun Yang Xin Pan Mei-Xiang Xiang Hua Yao Dong-Bao Zhao Brad S. Dalton Zhuo-Li Zhang Yong Wang Xian-Sheng Cheng Yue-Jin Yang | 2010 | Journal of Heart and Lung Transplantation2010，，2： | 1 |
| 15 | Evaluation of coal structure and permeability with the aid of geophysical logging technology显示文摘 | Fu X H Qin Y Wang Geoff G X | 2009 | Fuel2009，88，11： | 1 |
| 16 | Effects of structural deformation on formation of coalbed methane reservoirs in Huaibei coalfield, China显示文摘 | Bo Jiang Zhenghui Qu Geoff G.X. Wang Ming Li | 2009 | International Journal of Coal Geology2009，，3： | 1 |
| 17 | Numerical simulation of coalbed methane generation, dissipation and retention in SE edge ofOrdos Basin,China显示文摘 | Wei Chongtao Qin Yong Wang G X Geoff | 2010 | International Journal of Coal Geology2010，82，14： | 1 |
| 18 | Numerical simula- tion of coalbed methane generation,dissipation and retention in SE edge of Ordos Basin, China显示文摘 | Wei Chongtao Qin Yong Wang Geoff G X | 2010 | International Journal of Coal Geolo- gy2010，82，： | 1 |
| 19 | Hepatitis B or C virus serology as a prognostic factor in patients with hepatocellular carcinoma显示文摘 | Syed A. Ahmad M.D. Malcolm M. Bilimoria M.D. Xuemei Wang Francesco Izzo M.D. Paolo Delrio M.D. Paolo Marra M.D. Treneth P. Baker M.D. Geoff A. Porter M.D. Lee M. Ellis M.D. Jean N. Vauthey M.D. Sundar Dhamotharan M.D. Steven A. Curley M.D | 2001 | Journal of Gastrointestinal Surgery2001，，5： | 1 |
| 20 | Effects of structural deformation on formation of coalbed methane reservoirs in Huaibei coalfield, China 显示文摘 | Jiang Bo Qu Zhenghui Geoff G X Wang | 2010 | International Journal of Coal Geology2010，82，： | 1 |
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