洛带气田蓬莱镇气藏开发部署优化研究

气藏评价尚未结束之前，开发的早期部署工作非常困难。针对洛带气田蓬莱镇组气藏的开发部署工作，利用目前许多新方法对开发层系划分、采气规模、开发规划、合理配产和井网部署等进行了优化研究，对气藏开发提出了指导性意见，且对类似气藏也具有参考意义。     

基于广义Kопытов模型及乙型水驱曲线的综合预测法

将广义Kопытов预测模型和乙型水驱曲线方法有机的结合起来，得到了油田开发中后期——递减时期的一种预测水驱开发油田的含水率、产油量、产水量及其相应的累积产量随开发时间变化的方法，此方法克服了在水驱油田预测开发指标中二者所存在的局限性。     

西藏蛇绿岩中二种合金矿物新变种

在西藏雅鲁藏布江蛇绿岩带的东部，距拉萨200km的泽当罗莎蛇绿岩的铬铁矿中，发现有种类繁多的合金矿物，铬铁镍矿和依铁镍矿就是其中二种。铬铁镍矿分子式：Ni0.41Fe0.35Cr0.24，为等轴晶系，空间群为Fm3m，晶胞参数a=0.35622(2)nm。铱铁镍矿分子式：Ni0.66Fe0.18Ir0.16，属等轴晶系，空间群Oh^5-Fm3m，晶胞参数a=0.46486(4)mm。     

富碱斑岩中超镁铁深源包体岩石的矿物学特征

在云南省鹤庆县六合乡富碱斑岩体中找到超镁铁深源岩石包体，这对于研究富碱斑岩的起源和演化及其成岩成矿作用具有重要意义。本文较系统地研究了深源包体岩石的矿物学特征，揭示该深源包体具有原始上地幔岩在地幔条件下受到一定程度富集地幔流体交代作用改造的特征，具有富集地幔低程度部分熔融属性，为富碱斑岩的成岩成矿演化提供了重要的矿物学依据。     

含油玄武岩中绿泥石的形成温度

以苏北盆地高邮凹陷闵桥地区含油玄武岩中的绿泥石为研究对象，探讨了其成因和形成温度，认为玄武岩中绿泥石有两种形成方式、五条形成途径：其一为蚀变演化，包括：火山玻璃、斜长石、辉石的蚀变，交代橄榄石斑晶，以及皂石的进一步演化；其二为沉淀结晶，包括从热液中直接沉淀生长和胶体溶液充填后的结晶。计算结果显示，蚀变演化形成的绿泥石，其形成温度为128－271℃；沉淀结晶形成的绿泥石，其形成温度为31－63℃。玄武岩中绿泥石形成温度与埋藏深度间没有明显的线性相关。进一步研究表明，本区玄武岩作为储油层，其进油时的温度为62－118℃，不超出48－137℃。     

攀西地区独立银矿的成矿地质条件及找矿前景

四川攀西地区具有特定的地质条件，区域地球化学特征、有利的成矿环境和已发现的银矿床点，都证明区内具有很好的成矿地质条件，寻找大型独立银矿很有前景。主攻内生型和沉积变质型银矿床是今后工作的重点。     

四川石棉县首次发现独特的自然铂矿床

攀西地区大片前震旦纪结晶基底杂岩中产出有众多的前晋宁期层状侵入体，其间可见钒钛磁铁矿化，铬铁矿化，最近在石棉境内新发现一处含铂矿化体呈层状，网脉状产于层状侵入体中，且多以自然铂单矿物存在。伴生主要矿物为磁铁矿，钛铁矿，黄铁矿，黄铜矿等。初步认为该矿床类型属产于层状铁质基性-超基性岩与铜硫化物-钡钛磁铁矿有关的构造-热液再活化型自然铂矿床。     

农牧交错带典型区农业与牧业用地互动关系研究

利用1989年和2000年的两期Landsat-TM数据和相关的统计资料以及气候数据，应用转移距阵和多元回归分析等研究方法，对地处典型农牧交错带地区的兴和县土地利用变化进行研究，结果表明：农田和草地是研究区域中最主要的土地利用类型，Landsat-TM卫星影像数据和统计数据比较一致地反映农田和草地面积的变化；农田和草地的相互转换率在各种用地相互转化中非常剧烈；农业与牧业用地的互动特征具有明显的区域差异；农业和牧业用地的互动特点是自然因素和社会经济因素同时影响的结果。     

Origin of a large breccia-vein system in the Sanerlin uranium deposit, southern China: a reinterpretation

The early Tertiary Sanerlin uranium deposit is located near the southwestern margin of the Chaling-Yongxing pull-apart basin defined by the Chaling-Yongxing and Chenxian-Linwu sinistral strike-slip faults in southern China. The uranium ores are hosted in 15 breccia-vein bodies, which are separately located in the cores of three secondary anticlines of the Upper Permian Dangchong Formation. Individual breccia-vein bodies are composed of fragments of silicified shale and sandstone from the Dangchong Formation, and quartz veinlets as cements. These fragments, together with quartz veins, form a mosaic texture. Hydrothermal pitchblende is the only commercial uranium mineral, mainly occurring as disseminated grains within quartz veins or coating fragments. Other metallic minerals include molybdenite, pyrite, chalcopyrite, galena, sphalerite, and red microcrystalline hematite. Fluid inclusions in quartz veins have homogenization temperatures ranging from 150 to 280 °C, and calculated salinity values between 5.6 and 13.4 wt% NaCl equivalent. Stable isotope analyses show that the mineralizing fluid was characterized by '¹⁸O values of -2.2 to +2.6‰ and 'D_H2O values of -134 to -110‰. These analytical data demonstrate that hydrothermal fluids were mainly derived from formation waters (brines) of the Chaling-Yongxing basin. Fluid overpressuring was caused by an abnormal geothermal gradient and impermeable shales in the deposit area. The geometry, texture, and structure of the breccia-vein system, along with the fluid pressure estimates, suggest that hydraulic fracturing generated the mineralized breccia-vein system. Pitchblende and associated minerals were deposited when gaseous phases were released abruptly from the ore fluids due to the hydraulic fracturing.     

An Agricultural Land Resource Assessment Study Based on GIS—An Example from Guiyang City

This paper assesses the agricultural land resources of Guiyang City by means of GIS,on the basis of the pressure-state-response model in which soil heavy metal contamination is selected as a pressure indicatror.he results suggest that most of the agricultural land resources are of good quality,However,there are 17.11km^2 dry land and paddy field,which belong to the region of serious heavy metal contamination and are not fit for planting crops.At the same time,the high quality plowland,which is suitable for cultivation,has decreased nearly by 1/3 due to soil heavy metal contamination.These findings may improve our understanding that it is very important to prevent and cure heavy metal contamination of Guiyang City.