电法勘探在汤岗子地热田中的应用   总被引：1，自引：0，他引：1  

崔瑞华  谷社  李争  李清华 《地质找矿论丛》2003,18(Z1):196-199

文章从不同岩石的电性差异及地热区视电阻率与温度的关系出发,通过综合电法在汤岗子地热田又找到了新的地热资源,说明综合电法对勘查地热是行之有效的.  相似文献   

天然气水合物研究现状与展望   总被引：4，自引：0，他引：4  

宋召军  刘立 《吉林地质》2003,22(4):64-68

自20世纪90年代以来,世界各国对潜力巨大的新型能源———天然气水合物的研究做了大量的投入,已经取得了重大进展。本文在阐述国外天然气水合物的研究现状的同时,重点介绍了我国在天然气水合物勘探开发和实验模拟方面取得的一些进展,并展望其在能源、环境和其它研究领域的发展前景。  相似文献   

镜泊湖地区水体的同位素、元素地球化学特征及地下热水储存状态分析   总被引：2，自引：0，他引：2  

尚英男  徐旃章  尹观 《矿物岩石地球化学通报》2003,22(1):56-60

依据镜泊湖地区水体的同位素、水化学及微量元素中子活化分析资料，详细阐述了各采样点水体的来源、补给相对高程和它们之间可能的水力联系，以及有关的地热信息；分析了区内地热资源的有利地质背景条件研究区地处深大断裂及岩浆喷发带，火山喷发一直延续至第四纪全新世，有充分的热源供给；区内上部为较厚的玄武岩覆盖，有利于储存地热；下部白垩系上统为主要含水层，发现有广泛分布的典型木／岩热蚀变产物——斜发沸石，进而证明存在地下热水的可能性。  相似文献   

变频调速器在齐鲁石化供排水厂的推广与应用          下载免费PDF全文

张彦华 《地质找矿论丛》2003,18(Z1):155-158

近年来低压变频器已得到广大企业用户的认可,并显示出它的节能效果,文章介绍了变频器在齐鲁石化水厂的应用,对比改造前后的工作状况和在节能、节电、提高自动化水平及电路设计等方面的功能和特点.  相似文献   

鄂尔多斯盆地中部奥陶系方解石脉中包裹体流体势研究   总被引：5，自引：2，他引：5  

单秀琴胡国艺  高嘉玉 《岩石学报》2003,19(2):355-358

结合前人研究成果，归纳出了一种利用盐水包裹体均一温度与盐度确定流体势的方法，并对鄂尔多斯盆地中部气田奥陶系方解石脉中包裹体进行了流体势计算，推算出了古流体运移方向。  相似文献   

山西奇村地热田资源评价   总被引：4，自引：0，他引：4  

黄卫星  尹立河  王晓勇 《西北地质》2003,36(2):87-92

山西奇村地热田开采已有30年历史，从1988年大量开采地热水以来，使浅层热水生产井水温持续下降。本文建立了奇村地热田的概念模型，利用LUMPFIT软件，采用热田多孔抽水试验资料，对地热田在不同热水开采量下，地下水位降深及温度变化进行了预测，提出了合理的开采量，对地热田开采有重要指导意义。  相似文献   

几种常见矿物的接触角测定及其讨论   总被引：4，自引：0，他引：4       下载免费PDF全文

陆现彩  侯庆锋尹琳赵连泽  刘显东 《岩石矿物学杂志》2003,22(4):397-400

为了评价矿物表面与特征液体的界面能量，分别测定了长石、石英、黑云母、方解石、萤石和黄铁矿等7种常见矿物与水、正庚烷和正丁醇的接触角，并计算了相应的表面自由能。结果表明同一矿物不同结晶面(晶面)的接触角有一定的差异，这一差异与矿物结构面上原子种类和相对含量差异有一定的对应关系。  相似文献   

地热回灌的发展现状   总被引：15，自引：0，他引：15  

刘久荣 《水文地质工程地质》2003,30(3):100-104

地热回灌是一种避免地热废水直接排放引起的热污染和化学污染的措施,并对维持热储压力,保证地热田的开采技术条件具有重要的作用。目前回灌已经成为世界范围内数十个重要的地热田生产运行中的一项日常工作,在美国、新西兰、冰岛、意大利、法国、日本、罗马尼亚、丹麦、菲律宾和萨尔瓦多等十多个国家得到了广泛的应用。在国内,北京、天津的地热回灌也已经有了良好的开端。回灌是地热田管理中最为复杂的一项技术,为了避免因回灌而引起热储冷却,需要进行回灌试验和示踪试验,并在回灌过程进行全面的监测工作。  相似文献   

Scaling effects on modeled surface energy-balance components using the NOAH-OSU land surface model   总被引：3，自引：0，他引：3  

V. Sridhar  Ronald L. Elliott  Fei Chen 《Journal of Hydrology》2003,280(1-4):105-123

As surface exchange processes are highly non-linear and heterogeneous in space and time, it is important to know the appropriate scale for the reasonable prediction of these exchange processes. For example, the explicit representation of surface variability has been vital in predicting mesoscale weather events such as late-afternoon thunderstorms initiated by latent heat exchanges in mid-latitude regions of the continental United States. This study was undertaken to examine the effects of different spatial scales of input data on modeled fluxes, so as to better understand the resolution needed for accurate modeling. A statistical procedure was followed to select two cells from the Southern Great Plains 1997 hydrology experiment region, each 20 km×20 km, representing the most homogeneous and the most heterogeneous surface conditions (based on soil and vegetation) within the study region. The NOAH-OSU (Oregon State University) Land Surface Model (LSM) was employed to estimate surface energy fluxes. Three scales of study (200 m, 2 and 20 km) were considered in order to investigate the impacts of the aggregation of input data, especially soil and vegetation inputs, on the model output. Model results of net radiation and latent, sensible and ground heat fluxes were compared for the three scales. For the heterogeneous area, the model output at the 20-km resolution showed some differences when compared with the 200-m and 2-km resolutions. This was more pronounced in latent heat (12% decrease), sensible heat (22% increase), and ground heat flux (44% increase) estimation than in net radiation. The scaling effects were much less for the relatively homogeneous land area with 5% increase in sensible heat and 4% decrease in ground heat flux estimation. All of the model outputs for the 2- and 20-km resolutions were in close agreement. The results suggested that, for this study region, soils and vegetation input resolution of about 2 km should be chosen for realistic modeling of surface exchange processes. This resolution was sufficient to capture the effects of sub-grid scale heterogeneity, while avoiding the data and computational difficulties associated with higher spatial resolutions.  相似文献   

Tensor time domain electromagnetic resistivity measurements at Ngatamariki geothermal field, New Zealand     

George F. Risk  T. Grant Caldwell  Hugh M. Bibby 《Journal of Volcanology and Geothermal Research》2003,127(1-2):33-54

Experimental measurements in the Ngatamariki geothermal field, North Island, New Zealand were made to test the applicability of the time domain electromagnetic method for detailed investigation of the resistivity structure within a geothermal field. Low-frequency square wave signals were transmitted through three grounded bipole current sources sited about 8 km from the measurement lines. Despite high levels of electrical noise, transient electric field vectors could be determined reliably for times between 0.02 and 3.3 s after each step in the source current. Instantaneous apparent resistivity tensors were then calculated. Apparent resistivity pseudosections along the two measurement lines show smooth variations of resistivity from site to site. Over most of the field the images consistently show a three-layer resistivity structure with a conductive middle layer (3–10 Ωm) representing the conductive upper part of the thermal reservoir. A deep-seated region of low resistivity in the northwest of the field may indicate a conductive structure at about 1 km associated with a deeper diorite intrusion. Measurements sited closer than about 100 m to drillholes appear to have been disturbed by metallic casing in the holes. A change in resistivity structure in the east of the field may indicate a major geological or hydrothermal boundary.  相似文献