四川盆地油气勘探突破实例分析     

胡光灿 《海相油气地质》1997,2(3):52-53

四川盆地威远、中坝、川东等气田的发现表明，第一勘领域的突破都有一个曲折的过程，其中既有必然性，也有一定的偶然性。从三个气田的发现得到的启示是，要把寻求勘探新发现作为勘探向纵深发展的关键，要有一套利于勘探新发现的技术策略，还要有一套与勘探策略相应的碳酸相应的碳酸盐岩勘探技术和方法。  相似文献   

Stable Carbon Isotope Geochemical and Hydrochemical Features in the System of Carbonate-H_2O-CO_2 and Their Implications—Evidence from Several Typical Karst Areas of China   总被引：6，自引：0，他引：6  

Liu Zaihu  Yuan Daoxian  He Shiyi Institute of Karst Geology  Qixing Rd.  Guilin  Guangxi 《《地质学报》英文版》1997,71(4):446-454

On the basis of hydrochemical observation and experimental calculation, the features of stable carbon isotope geochemistry in the karst dynamic systems of the Guilin Karst Experimental Site, Huanglong Ravine and Wujiangdu Dam Site are summarized in this study. Furthermore, an attempt has been made to solve several geochemical problems, such as the origin of CO2 in the system, kinetic fractionation of carbon isotopes during calcite deposition, hydrochemistry and formation of tufa, and carbon-14 dating of tufa of hydrothermal origin. The results show that three kinds of karst dynamic system can be distinguished: (1) the shallow system, such as the Guilin Karst Experimental Site, in which soil CO2 provides the an active agent for karst processes; (2) the geothermal system, such as the Huanglong Ravine, in which metamorphic or/ and juvenile CO, is the source of activity for karst; (3) the anthropogenic system, such as the Wujiangdu Dam Site, in which the stable carbon isotope geochemical and hydrochemical f  相似文献   

水质站网规划研究中几个问题的探讨   总被引：3，自引：0，他引：3  

赵海瑞  秦福兴 《水文》1995,(1):7-11

在进行中国水质站网规划布设合理的性研究中，按河流水系将全国国土分为若干水质站网规划单元分区，然后运用主成分聚类方法进行单元分区类型的划分，作为水质站网规划的基础。在同一类型单元分区内，运用模糊集合聚类方法，将分区内的水质进行分类，以确定水质站的布设密度，并对每一水质参数的采亲频次进行分析研究，以指导确定其采样频次。  相似文献   

土工织物加固高速公路软基的有限元分析   总被引：5，自引：1，他引：4  

黄腾  冯晓腊  张迎春  徐复兴 《地质科技情报》1999,18(3):85-89

运用弹塑性理论和有限元法,采取试算分析的办法,确立了选取计算城范围和确定边界条件的原则,在此基础上,探讨了土工织物的水平向加筋,得到了如下 结论：由土工我成的水平向加筋体能均化地基浅部应力,消减路堤坡脚处的剪应力集中现象,且能隔离上,下土体,从而防止路堤发生“由表及里”的渐进性破坏。  相似文献   

遥感技术用于太行山北段金矿研究   总被引：2，自引：2，他引：0  

张义彬  田晓娟 《物探化探计算技术》1998,20(3):256-260

本文介绍了遥感技术在太行山地区岩性勾绘、构造解释、蚀变带识别、矿化信息提取及找矿靶区圈定等方面的应用。探讨出该区的成矿规律和找矿方向,总结出适应于这类地区的图像处理技术和遥感、物化探资料综合分析方法。  相似文献   

The Equilibrium Coefficient Kp and Petroleum Exploration:Design of the New Generation of Petroleum Exploration Instrument     

FENG Weiheng  FENG Yun Shanghai Gamma Ray Technology Co.  Ltd.  Laohumin Rd.  Shanghai 《《地质学报》英文版》2000,74(3):685-691

The main reason why the application of nuclear technology in petroleum exploration has not yet been accepted by most exploration workers is that they are not clear about the homologous distribution features of oil and gas fields and radioactive radiation. The authors hold that the disequilibrium of uranium, radium and radon as a natural radioactive series is the basic feature in the use of this technology in petroleum exploration. The invention Gamma-ray Spectral Measurement of the Equilibium Coefficient Kp and Its Embodiment of the senior author now can readily solve that problem and replace the impedient measure of normalization of uranium and potassium to thorium that had to be proposed before. Application of this impedient measure has some limitations. In areas where the surface is covered by beach or river sands, thorium minerals such as monazite may be concentrated by placering. This could result in local thorium highs that would yield local uranium and potassium lows after normalization to thoriu  相似文献   

Research and Application of New Methods to Oil-Gas Geochemical Exploration     

CHEN Yuanrong  JIA GuoxiangGuilin Research Institute of Geology for Mineral Resources  Fuxing R  Guilin  Guangxi 《《地质学报》英文版》2000,74(3):692-696

Based on the results of researches and applications for many years, it has been discovered that new methods and techniques for geochemical exploration of oil and gas such as AC, altered carbonate, Hg in absorption phase, Ks, Fe2+ ,δ13C, fluorescence in two and three dimensions, and N2 and O2 in heat release can give full play in the following five fields: (1) optimization of the favourable target or hollow zones and structural zones in a region; (2) evaluation of oil traps and delineation of prospective oil and gas areas; (3) prediction of deep-seated oil-bearing horizons; (4) evaluation of the genesis of oil and gas geochemical anomalies and determination of the types of oil and gas accumulations; (5) forecast of the burial depths of oil and gas pools.  相似文献   

国外洞穴研究概况   总被引：2，自引：0，他引：2  

王福星 《中国岩溶》1990,9(4):366-370

<正> 洞穴是可溶岩石中最常见的一种岩溶现象,它是最广泛,最深入研究的岩溶形态之一。其研究范畴几乎包括了岩溶学的全部领域,它的独特特征和重要的学术及实际意义使它在岩溶学中具有特殊的地位。洞穴研究已逐步发展为一门独立的学科——洞穴学,且派生出一些分枝,如生物洞穴学等。   相似文献   

洞穴黑暗带中有无叠层石?     

王福星  曹建华  黄俊发 《中国岩溶》1998,17(3):278-284

本文从叠层石概念入手,通过介绍前人大量关于蓝藻(蓝细菌)和细菌在弱光和黑暗环境中的习性,及其在叠层石形成中的作用,讨论了叠层石形成的两大影响要素: 生物控制和环境影响。并提出了以模拟试验的有效方法论证叠层石在洞穴黑暗带中形成的可能性。   相似文献   

国外洞穴生物研究概况   总被引：10，自引：0，他引：10  

王福星  曹建华 《中国岩溶》1997,16(3):259-267

本文是通过对大量国外洞穴生物研究论文的参考、归纳而编写成的,内容涉及洞穴生物研究历史、地理分布、生态特征和演化等热门研究;同时,还简单介绍了洞穴动物的采集方法和洞穴微生物沉淀矿物的一些研究   相似文献