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New geothermal well-completion and rework technology by laser 激光地热井完井返修新技术
Central European Geology Pub Date : 2015-09-08 DOI: 10.1556/24.58.2015.1-2.6
Peter Bajcsi, T. Bozsó, Robert Bozso, G. Molnár, Viktor Tábor, I. Czinkota, T. Tóth, Balázs Kovács, F. Schubert, Gábor Bozsó, J. Szanyi
{"title":"New geothermal well-completion and rework technology by laser","authors":"Peter Bajcsi, T. Bozsó, Robert Bozso, G. Molnár, Viktor Tábor, I. Czinkota, T. Tóth, Balázs Kovács, F. Schubert, Gábor Bozsó, J. Szanyi","doi":"10.1556/24.58.2015.1-2.6","DOIUrl":"https://doi.org/10.1556/24.58.2015.1-2.6","url":null,"abstract":"Our research team has developed a new well completion and rework technology involving lasers. The system is made up of a high-power laser generator and a custom-designed directional laser drilling head. The laser head is attached to a coiled tubing unit to maximize production and to carry out special downhole tasks. In this phase of the development effort, laser technology is particularly well suited to cost-efficiently drill short laterals from existing wells in a single work phase, drilling through the casing and cement as well as the formation. The technology, which is an extended perforation solution, enables a more intensive interaction with the downhole environment and supports cutting edge subsurface engineering scenarios such as barite removal. Laser-induced heat treatment appears to be a suitable alternative to effectively remove the almost immovable deposits and scales from thermal water-well pipes.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"58 1","pages":"88-99"},"PeriodicalIF":0.0,"publicationDate":"2015-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.58.2015.1-2.6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67002484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Geothermal phenomena in the context of gravity-driven basinal flow of groundwater 重力驱动盆地地下水流动背景下的地热现象
Central European Geology Pub Date : 2015-09-08 DOI: 10.1556/24.58.2015.1-2.1
J. Tóth
{"title":"Geothermal phenomena in the context of gravity-driven basinal flow of groundwater","authors":"J. Tóth","doi":"10.1556/24.58.2015.1-2.1","DOIUrl":"https://doi.org/10.1556/24.58.2015.1-2.1","url":null,"abstract":"Gravity-driven groundwater flow systems function in topographic basins as subsurface conveyor belts. They pick up and move fluids, gases, solutes, colloids, particulate matter and heat from loading sites in recharge areas and/or on their way to the discharge areas and can deliver them “en route” or in discharge regions. Gravitational flow systems of various horizontal and vertical extents are organized into hierarchically nested complex patterns controlled by the configuration of the water table’s relief and modified by the rock framework’s heterogeneities of permeability. The systems are ubiquitous and act simultaneously on broad ranges of the spatial and temporal scales of measurement. Their universal geologic agency is manifest by numerous different, even disparate, natural processes and phenomena. Several of these are associated with geothermal heat flow. The understanding of geothermal phenomena in the context of basinal flow systems requires, therefore, an intimate familiarity with the overarching “...","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"58 1","pages":"1-27"},"PeriodicalIF":0.0,"publicationDate":"2015-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.58.2015.1-2.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67001437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Innovative energy-related use of shallow and deep groundwaters — Examples from China and Switzerland 与能源相关的浅层和深层地下水的创新利用——来自中国和瑞士的例子
Central European Geology Pub Date : 2015-09-08 DOI: 10.1556/24.58.2015.1-2.7
L. Rybach
{"title":"Innovative energy-related use of shallow and deep groundwaters — Examples from China and Switzerland","authors":"L. Rybach","doi":"10.1556/24.58.2015.1-2.7","DOIUrl":"https://doi.org/10.1556/24.58.2015.1-2.7","url":null,"abstract":"The heat content of shallow or deep aquifers can be used for space heating. Two innovative systems are described below in detail: a geothermal heat pump system based on a single well in China (= shallow), and a cascading use of tunnel waters (= deep) in Switzerland. The “Single Well System” (HYY SWS) was invented and developed by Beijing Ever Source Science & Technology Development Co., Ltd (HYY) to provide buildings with heating and cooling as well as with domestic hot water. The powerful system operates at about 500 kWth capacity. Unlike traditional groundwater heat pump systems, in which two wells are used (one for pumping groundwater out and the other to dispose of cooled water), the HYY SWS uses only one, specially designed well for production and reinjection. A borehole with a depth of about 70–80 m and a diameter of 0.5 m is drilled for HYY Single Well Systems. The necessary local geologic site condition is to have a shallow aquifer with a hydraulic conductivity of 10−3 m/sec or higher. Many such s...","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"58 1","pages":"100-113"},"PeriodicalIF":0.0,"publicationDate":"2015-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.58.2015.1-2.7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67002505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
A half century of reservoir property changes in the Szentes geothermal field, Hungary 匈牙利Szentes地热田半个世纪以来储层性质的变化
Central European Geology Pub Date : 2015-09-08 DOI: 10.1556/24.58.2015.1-2.2
A. Bálint, J. Szanyi
{"title":"A half century of reservoir property changes in the Szentes geothermal field, Hungary","authors":"A. Bálint, J. Szanyi","doi":"10.1556/24.58.2015.1-2.2","DOIUrl":"https://doi.org/10.1556/24.58.2015.1-2.2","url":null,"abstract":"The general characterization of the Hungarian Szentes geothermal field is presented based on the review of previous research and is supplemented with the analysis of well hydraulic tests. Forty thermal wells were included in the study area, producing mainly from Upper Pannonian sandstone reservoirs. The intensive and long-term production of thermal water reservoirs without reinjection resulted in significant reservoir pressure decrease from natural conditions. By means of deep-well pressure build-up curves, deep-well capacity curves and surface pressure curves the reservoir condition changes were described in the last half century.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"25 1","pages":"28-49"},"PeriodicalIF":0.0,"publicationDate":"2015-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.58.2015.1-2.2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67002124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Heat potential evaluation of effluent and used thermal waters in Budapest, Hungary 匈牙利布达佩斯流出物和用过的热水的热势评价
Central European Geology Pub Date : 2015-09-08 DOI: 10.1556/24.58.2015.1-2.4
A. Erőss, Ferenc Zsemle, E. Pulay
{"title":"Heat potential evaluation of effluent and used thermal waters in Budapest, Hungary","authors":"A. Erőss, Ferenc Zsemle, E. Pulay","doi":"10.1556/24.58.2015.1-2.4","DOIUrl":"https://doi.org/10.1556/24.58.2015.1-2.4","url":null,"abstract":"Europe’s largest thermal water system can be found in the capital of Hungary. The springs and wells that supply the famous baths of Budapest discharge mainly from a regional Triassic carbonate rock...","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"58 1","pages":"62-71"},"PeriodicalIF":0.0,"publicationDate":"2015-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.58.2015.1-2.4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67001770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Groundwater flow and geochemical modeling of the Acque Albule thermal basin (Central Italy): a conceptual model for evaluating influences of human exploitation on flowpath and thermal resource availability aquque Albule热盆地(意大利中部)的地下水流动和地球化学模拟:评价人类开采对流动路径和热资源可用性影响的概念模型
Central European Geology Pub Date : 2015-09-08 DOI: 10.1556/24.58.2015.1-2.10
A. Bon, C. Sbarbati, Elio Brunetti, Valentina Carucci, A. Lacchini, Valentina Marinelli, M. Petitta
{"title":"Groundwater flow and geochemical modeling of the Acque Albule thermal basin (Central Italy): a conceptual model for evaluating influences of human exploitation on flowpath and thermal resource availability","authors":"A. Bon, C. Sbarbati, Elio Brunetti, Valentina Carucci, A. Lacchini, Valentina Marinelli, M. Petitta","doi":"10.1556/24.58.2015.1-2.10","DOIUrl":"https://doi.org/10.1556/24.58.2015.1-2.10","url":null,"abstract":"Although the Acque Albule Basin has been studied since the middle of the 19th century, a comprehensive geologic conceptual model of the area has not yet been developed. The natural setting has been heavily modified by anthropic activities. Rapid evolution during the last 25 years has caused many interferences, which have led to a drastic increase of the hazards and linked risks, mainly related to water resource overexploitation and subsidence. The implementation of an exhaustive framework has become mandatory for environmental and management purposes. Starting from a critical review of previous studies, hydrogeologic and hydrogeochemical surveys and related numerical modeling have been carried out in order to achieve a quantitative understanding of the active phenomena and processes. Several hydrogeologic issues have been addressed concerning aquifer recharge areas and the different flowpaths of groundwater in respect to their division into a shallow and a deep circuit. Account has been taken of the groun...","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"190 1","pages":"152-170"},"PeriodicalIF":0.0,"publicationDate":"2015-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.58.2015.1-2.10","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67001484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Calibration process for groundwater flow model of a river influenced shallow aquifer 影响浅层含水层的河流地下水流量模型的标定过程
Central European Geology Pub Date : 2015-09-08 DOI: 10.1556/24.58.2015.1-2.12
Andrea Kolencsik-Tóth, Balázs Kovács
{"title":"Calibration process for groundwater flow model of a river influenced shallow aquifer","authors":"Andrea Kolencsik-Tóth, Balázs Kovács","doi":"10.1556/24.58.2015.1-2.12","DOIUrl":"https://doi.org/10.1556/24.58.2015.1-2.12","url":null,"abstract":"Understanding and simulating the interaction of groundwater and surface water is essential to hydrologists. Water supply and water quality aspects are a few examples of common water-resource issues where understanding the interconnections of groundwater and surface water is fundamental to develop an effective water-resource management and policy. In our study a detailed investigation of a riverbank aquifer was performed to be able to simulate and predict the behavior of the flow system. The continuous hydraulic head measurements in the area of interest showed strong influence on the hydraulic head field caused by intensively changing river head at a distance from the river up to 3,500 m. Based on the results steady state and transient flow calculations were compared, and a great effort has been made to ensure that the model more precisely describe the time and space variable flow field. Beside fulfilling the standard calibration requirements, a multi-step calibration process was performed.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"58 1","pages":"186-198"},"PeriodicalIF":0.0,"publicationDate":"2015-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/24.58.2015.1-2.12","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67001547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Potential maps for the hydrogeologic prerequisites of the installation of deep geothermal doublets and groundwater source heat pump systems in Budapest, Hungary 在匈牙利布达佩斯安装深层地热双重热源和地下水源热泵系统的水文地质先决条件的潜在地图
Central European Geology Pub Date : 2015-09-08 DOI: 10.1556/24.58.2015.1-2.8
J. Mádl-Szőnyi, M. Virág, Ferenc Zsemle
{"title":"Potential maps for the hydrogeologic prerequisites of the installation of deep geothermal doublets and groundwater source heat pump systems in Budapest, Hungary","authors":"J. Mádl-Szőnyi, M. Virág, Ferenc Zsemle","doi":"10.1556/24.58.2015.1-2.8","DOIUrl":"https://doi.org/10.1556/24.58.2015.1-2.8","url":null,"abstract":"Budapest is famous for its thermal springs and spas and outstanding thermal water resources. In the 21st century renewable energy utilization — including the use of geothermal energy — became the focus of interest. Improving the use of the different forms of geothermal energy requires the assessment of their possibilities. The potential for deep geothermal doublet systems for direct heating in Budapest was evaluated based on the temperature conditions, the depth and reconnaissance of the carbonate reservoir. NW Buda is not appropriate for thermal water exploration. SW and SE Budapest have better temperature conditions but the lithology of the reservoir is uncertain. Beneath Pest the thermal water is well exploitable. It is obvious from the map of the region that the area is promising; however, due to the hydraulic continuity of the system, reinjection is desirable. Considering the reliability of the employed data the geothermal potential map is suitable only for general orientation and guidance. The geoth...","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"13 1","pages":"114-128"},"PeriodicalIF":0.0,"publicationDate":"2015-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67002557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Pedogenic calcrete records in southern Transdanubia, Hungary : a brief review with paleoenvironmental and paleogeographic implications 匈牙利外多瑙河南部成土钙质记录及其古环境和古地理意义
Central European Geology Pub Date : 2014-12-27 DOI: 10.1556/CEUGEOL.57.2014.2.2
A. Varga, B. Raucsik
{"title":"Pedogenic calcrete records in southern Transdanubia, Hungary : a brief review with paleoenvironmental and paleogeographic implications","authors":"A. Varga, B. Raucsik","doi":"10.1556/CEUGEOL.57.2014.2.2","DOIUrl":"https://doi.org/10.1556/CEUGEOL.57.2014.2.2","url":null,"abstract":"In the Hungarian part of the Tisia Block, four occurrences of rhizolith-bearing pedogenic calcrete have been published, three of which are located in southern Transdanubia. Nodular calcrete with beta fabrics was documented from the lower Permian (Cisuralian) continental Korpad Sandstone Formation where the subaerial exposure section was developed on a strongly altered, volcanic shard-rich siliciclastic substrate. Additionally, two locations with Microcodium-bearing calcrete developed on a lower Jurassic carbonate substrate were published in the last few years. The scope of this study is to briefly summarize pedogenic calcrete records known from the Permian to the Cenozoic of southern Transdanubia (Tisia Block, Hungary), and to highlight their regional paleoenvironmental and paleogeographic importance.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"57 1","pages":"137-151"},"PeriodicalIF":0.0,"publicationDate":"2014-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67097189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Geotechnical rock mass documentation in the Bátaapáti radioactive waste repository Bátaapáti放射性废物储存库中的岩土工程岩体文件
Central European Geology Pub Date : 2014-12-27 DOI: 10.1556/CEUGEOL.57.2014.2.5
F. Deák, L. Kovács, B. Vásárhelyi
{"title":"Geotechnical rock mass documentation in the Bátaapáti radioactive waste repository","authors":"F. Deák, L. Kovács, B. Vásárhelyi","doi":"10.1556/CEUGEOL.57.2014.2.5","DOIUrl":"https://doi.org/10.1556/CEUGEOL.57.2014.2.5","url":null,"abstract":"The geologic, geotechnical and rock mechanical background of the area, which includes an underground cavern system, is very complex. Initially, to describe the rock mass properties, the RMR and Q systems were used, while the rock support system was based solely on the Q system. Later, during construction of the repository chambers, the GSI system was also introduced in addition to the above-mentioned rock classification methods. The correlation and usage of these three different rock mass classification systems were investigated.Special methods were used to obtain more accurate tunnel mapping and documentation, which is based on photogrammetry and photo analyzer software.According to the results, the correlation between the RMR and Q values is independent of the rock type; basically, the same equation can be used for all (differences between experimental error). The GSI intervals also closely follows the same trend as the results of the other two methods.","PeriodicalId":39930,"journal":{"name":"Central European Geology","volume":"57 1","pages":"197-211"},"PeriodicalIF":0.0,"publicationDate":"2014-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1556/CEUGEOL.57.2014.2.5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67097303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
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