热水和矿泉水开采井中的阶梯下降测试——斯洛文尼亚的案例研究

Q3 Earth and Planetary Sciences Geologija Pub Date : 2020-12-30 DOI:10.5474/geologija.2020.021
Luka Serianz, Nina Rman, M. Brenčič
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引用次数: 0

摘要

为了评估斯洛文尼亚热水井和矿泉水井的井况,对阶梯下降测试进行了比较分析。在30口井中进行了测试,每口井都有特许权法令中确定的最大生产率。利用Jacob近似方程的图形分析,油井性能分析的主要重点是估计油井生产率的充分性,并确定油井技术状态多年来可能发生的变化。由于测试过程中的技术问题,总共30口井中有5口未纳入分析。油井性能分析包括计算与湍流相关的非线性油井损失和假设与层流相关的线性水头损失(含水层和油井)。结果表明,非线性井损失与线性水头(井和含水层)损失之比(本文称为层流损失)为6.9%-97.4%。层流损失参数表明,所有研究的井都被分为良好(11口井)、中等(7口井)或较差(7口)。所述分析为进一步的热水和矿泉水开采提供了非常重要的基础,例如优化特许权法令中授予的最大允许生产率,并诊断每口井技术状态的潜在变化。
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Step-drawdown tests in exploitation wells for thermal and mineral water – Case study from Slovenia
A comparative analysis of step-drawdown tests was performed in order to estimate the well performance in Slovenian thermal and mineral water wells. Tests were performed in 30 wells, each having its own maximum production rate determined in the concession decrees. The main focus of well performance analysis, using graphical analysis of the Jacob approximate equation, was to estimate the adequacy of the wells production rate as well as to identify possible changes in the technical status of the wells over years. 5 of total 30 wells were not included in the analysis due to technical issues during test performance. Well performance analysis includes the calculation of nonlinear well losses related to turbulent flow and linear head loss (aquifer and well) assumed to be related to laminar flow. Results indicate that the ratios between nonlinear well losses and linear head (well and aquifer) losses, in this paper referred as laminar losses, are from 6.9 % to 97.4 %. Laminar losses parameter suggests, all investigated wells were classified with either good (11 wells), medium (7 wells) or poor (7 wells) performance. The addressed analysis represents a very important basis for further thermal and mineral water extraction, e.g. optimizing the maximum allowed production rate as granted in concession decrees and diagnose potential changes in the technical status of each well.
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来源期刊
Geologija
Geologija Earth and Planetary Sciences-Geophysics
CiteScore
1.00
自引率
0.00%
发文量
10
审稿时长
10 weeks
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