Pub Date : 2023-01-10DOI: 10.5194/adgeo-58-101-2023
F. Schölderle, D. Pfrang, K. Zosseder
Abstract. The localization and characterization of hydraulically active zones in a geothermal well is a major task in understanding the hydro geothermal reservoir. This is often done based on interpretations of spinner flow meter measurements that are performed at the end of the well test while injecting cold water. Once a production well is equipped with an electric submersible pump, data collection inside the reservoir and monitoring of the flow zones is usually barely possible. In a 3.7 km (MD) deep geothermal production well in Munich, Germany, it was successfully demonstrated in 2019 that a permanently installed optical fiber cable could close this measurement gap. We used this fiber-optic monitoring system to collect distributed temperature data once the well was set into production. We inversely modeled the inflow from the formation into the borehole from the production temperature data with an energy and mass balance model. The derived flow profile correlates with previous flow meter analysis and indicates that a karstified region at the very top of the reservoir is the driving factor for hydraulics and obtained production temperature. Qualitatively, the two profiles acquired by distributed temperature sensing (DTS) and flow meter are matchable, yet the production inflow profile by DTS logging is more differentiated compared to spinner flow meter logs interpretation during injection.
{"title":"Inverse flow zone characterization using distributed temperature sensing in a deep geothermal production well located in the Southern German Molasse Basin","authors":"F. Schölderle, D. Pfrang, K. Zosseder","doi":"10.5194/adgeo-58-101-2023","DOIUrl":"https://doi.org/10.5194/adgeo-58-101-2023","url":null,"abstract":"Abstract. The localization and characterization of hydraulically active zones in a\u0000geothermal well is a major task in understanding the hydro geothermal\u0000reservoir. This is often done based on interpretations of spinner flow meter\u0000measurements that are performed at the end of the well test while injecting\u0000cold water. Once a production well is equipped with an electric submersible\u0000pump, data collection inside the reservoir and monitoring of the flow zones\u0000is usually barely possible. In a 3.7 km (MD) deep geothermal production well\u0000in Munich, Germany, it was successfully demonstrated in 2019 that a\u0000permanently installed optical fiber cable could close this measurement gap.\u0000We used this fiber-optic monitoring system to collect distributed\u0000temperature data once the well was set into production. We inversely modeled\u0000the inflow from the formation into the borehole from the production\u0000temperature data with an energy and mass balance model. The derived flow\u0000profile correlates with previous flow meter analysis and indicates that a\u0000karstified region at the very top of the reservoir is the driving factor for\u0000hydraulics and obtained production temperature. Qualitatively, the two\u0000profiles acquired by distributed temperature sensing (DTS) and flow meter\u0000are matchable, yet the production inflow profile by DTS logging is more\u0000differentiated compared to spinner flow meter logs interpretation during\u0000injection.\u0000","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83289995","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}
Pub Date : 2023-01-03DOI: 10.5194/adgeo-59-59-2023
Diego Schmidlin, L. Scheiber, M. Teixidó, E. Vázquez, R. Criollo, A. Jurado, D. Puigserver, Silvia Burdons, M. Enrich
Abstract. Groundwater is a vital resource for the development of urban areas, where the problem focuses on the quantity and on the quality of this freshwater resource. Barcelona is a good example as because currently groundwater is used for irrigation of parks and gardens and street cleaning due to its poor quality as drinking water source. Among the pollutants found in groundwater, of special interest are contaminants of emerging concern (CEC), as they pose a high risk to the aquatic environment and human health. The behaviour, spatial distribution and processes that control them in the aquatic environment are still uncertain and most of them are unregulated. In this paper we study the inputs and processes controlling the hydrochemistry of Barcelona urban groundwater with special emphasis on the CEC. We selected 29 CEC that were detected at high concentrations of up to 1 µg L−1 (e.g. gemfibrozil, benzotriazole, among others). Towards the higher zones we identify groundwater with relative low mineralization more proximate to the natural recharge composition, while towards the urban area the anthropic inputs are evident (e.g. nitrate concentrations range from 50 to 200 mg L−1). Near the Besòs river there is a clear contribution from this superficial water highly polluted, mostly from wastewater treatment plant (WWTP) discharges, and reducing conditions. The main contributor of CEC pollution in groundwater was the river-aquifer interaction (Besòs river), while towards the urban area it might come from sewage seepage and probably a minor input from urban runoff. The redox state of these waters seems to control the fate and occurrence of several of these CEC. The limitations of this study are restricted to a single sampling campaign, therefore these results should be corroborated with other sampling campaigns, including the seasonal variations, which would allow establishing more robust conclusions.
摘要地下水是城市发展的重要资源，问题集中在淡水资源的数量和质量上。巴塞罗那就是一个很好的例子，因为目前地下水被用于公园和花园的灌溉和街道清洁，因为它作为饮用水源的质量很差。在地下水中发现的污染物中，特别令人感兴趣的是新出现的关注污染物(CEC)，因为它们对水生环境和人类健康构成高风险。在水生环境中，控制它们的行为、空间分布和过程仍然不确定，而且大多数是不受管制的。本文研究了控制巴塞罗那城市地下水水化学的输入和过程，重点研究了CEC。我们选择了29种在高达1 μ g L−1的高浓度下检测到的CEC(例如吉非罗齐、苯并三唑等)。在海拔较高的地区，我们发现矿化度相对较低的地下水更接近于自然补给成分，而在城市地区，人为输入是明显的(例如硝酸盐浓度范围从50到200 mg L - 1)。在Besòs河附近，有一个明显的贡献来自这种高度污染的浅表水，主要来自污水处理厂(WWTP)排放和减少条件。地下水中CEC污染的主要来源是河流-含水层相互作用(Besòs river)，而城市地区的CEC污染可能来自污水渗漏，也可能来自城市径流的少量输入。这些水域的氧化还原状态似乎控制着这些CEC的命运和发生。本研究的局限性仅限于单一采样活动，因此这些结果应该与其他采样活动(包括季节变化)相证实，这将允许建立更可靠的结论。
{"title":"Sources of Contaminants of Emerging Concern in Groundwater of Barcelona Urban Area","authors":"Diego Schmidlin, L. Scheiber, M. Teixidó, E. Vázquez, R. Criollo, A. Jurado, D. Puigserver, Silvia Burdons, M. Enrich","doi":"10.5194/adgeo-59-59-2023","DOIUrl":"https://doi.org/10.5194/adgeo-59-59-2023","url":null,"abstract":"Abstract. Groundwater is a vital resource for the development of\u0000urban areas, where the problem focuses on the quantity and on the quality of\u0000this freshwater resource. Barcelona is a good example as because currently\u0000groundwater is used for irrigation of parks and gardens and street cleaning\u0000due to its poor quality as drinking water source. Among the pollutants found\u0000in groundwater, of special interest are contaminants of emerging concern\u0000(CEC), as they pose a high risk to the aquatic environment and human health.\u0000The behaviour, spatial distribution and processes that control them in the\u0000aquatic environment are still uncertain and most of them are unregulated. In\u0000this paper we study the inputs and processes controlling the hydrochemistry\u0000of Barcelona urban groundwater with special emphasis on the CEC. We selected\u000029 CEC that were detected at high concentrations of up to 1 µg L−1 (e.g.\u0000gemfibrozil, benzotriazole, among others). Towards the higher zones we\u0000identify groundwater with relative low mineralization more proximate to the\u0000natural recharge composition, while towards the urban area the anthropic\u0000inputs are evident (e.g. nitrate concentrations range from 50 to 200 mg L−1).\u0000Near the Besòs river there is a clear contribution from this superficial\u0000water highly polluted, mostly from wastewater treatment plant (WWTP)\u0000discharges, and reducing conditions. The main contributor of CEC pollution\u0000in groundwater was the river-aquifer interaction (Besòs river), while\u0000towards the urban area it might come from sewage seepage and probably a\u0000minor input from urban runoff. The redox state of these waters seems to\u0000control the fate and occurrence of several of these CEC. The limitations of\u0000this study are restricted to a single sampling campaign, therefore these\u0000results should be corroborated with other sampling campaigns, including the\u0000seasonal variations, which would allow establishing more robust conclusions.\u0000","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90189763","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}
{"title":"The Strategy of 3D Inversion of Magnetic Structure from South China Sea Affected by Strong Remanent Magnetization","authors":"淑玲 李","doi":"10.12677/ag.2023.134043","DOIUrl":"https://doi.org/10.12677/ag.2023.134043","url":null,"abstract":"","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73056947","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}
In this paper, the occurrence of earthquakes with M ≥ 5.0 in the central area after strong earth-quakes with M ≥ 7.0 in the Qilian Mountain seismic zone since 1900 is analyzed. It is found that earthquakes with M ≥ 5.0 within 100~220 km of the epicenter are obviously enhanced 1~6 years after earthquakes with M ≥ 7.0 in this region, which shows the seismicity enhancement effect. The seismicity of earthquakes with M ≥ 5.0 after 23~56 years strong earthquakes with M ≥ 7.0 de-任雪梅，李文君
{"title":"Attenuation Characteristics of Earthquakes with M ≥ 7.0 in Qilian Mountain Seismic Zone Since 1900","authors":"雪梅 任","doi":"10.12677/ag.2023.138093","DOIUrl":"https://doi.org/10.12677/ag.2023.138093","url":null,"abstract":"In this paper, the occurrence of earthquakes with M ≥ 5.0 in the central area after strong earth-quakes with M ≥ 7.0 in the Qilian Mountain seismic zone since 1900 is analyzed. It is found that earthquakes with M ≥ 5.0 within 100~220 km of the epicenter are obviously enhanced 1~6 years after earthquakes with M ≥ 7.0 in this region, which shows the seismicity enhancement effect. The seismicity of earthquakes with M ≥ 5.0 after 23~56 years strong earthquakes with M ≥ 7.0 de-任雪梅，李文君","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73255507","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}
{"title":"Metallogenic Regularity of Skarn Type Lead-Zinc Deposit in Guangxi","authors":"学娇 张","doi":"10.12677/ag.2023.132012","DOIUrl":"https://doi.org/10.12677/ag.2023.132012","url":null,"abstract":"","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78464608","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}
{"title":"Re-Understandings of Sedimentary Features and Hydrocarbon Implications of the Second Member (Es2) Interval of Shahejie Formation, Dongying Sag","authors":"扬 李","doi":"10.12677/ag.2023.138084","DOIUrl":"https://doi.org/10.12677/ag.2023.138084","url":null,"abstract":"","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"92 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87745423","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}
{"title":"Susceptibility and Risk Assessment of Land Subsidence in the Eastern Plain of Huzhou City","authors":"尊龙 杜","doi":"10.12677/ag.2023.137066","DOIUrl":"https://doi.org/10.12677/ag.2023.137066","url":null,"abstract":"","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82650542","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}
{"title":"Effect of Addition of Nano-Graphite Powder on Microstructure of Red Clay","authors":"心荷 郭","doi":"10.12677/ag.2023.134033","DOIUrl":"https://doi.org/10.12677/ag.2023.134033","url":null,"abstract":"","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84754687","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}
{"title":"Evaluating the Applicability of Porosity Measurement Methods for Porous Rock—Taking Coral Reef Limestone as an Example","authors":"君朋 王","doi":"10.12677/ag.2023.135045","DOIUrl":"https://doi.org/10.12677/ag.2023.135045","url":null,"abstract":"","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90895079","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}
{"title":"Study on Three-Dimensional Forward Modeling for Opposing Coils Transient Electromagnetic Method by Vector Finite Element on Water Surface","authors":"金星 蓝","doi":"10.12677/ag.2023.134041","DOIUrl":"https://doi.org/10.12677/ag.2023.134041","url":null,"abstract":"","PeriodicalId":7329,"journal":{"name":"Advances in Geosciences","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78037691","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：