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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Spontaneous potential well-logging is one of the important techniques in petroleum exploitation.
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But the temperature varies considerably during the growing season, which does not favor the regeneration of spruce seedlings on clear-cuts after logging.
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Crossutting concerns such as logging, security, and transaction, are well supported in the programming level by aspect-oriented programming technologies.
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Main requirements for the engineering parameters of the equipment and principles of interpreting well-logging EM flaw detection are shown.
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Cold treatment (4°C) and water logging stress enhanced and abscisic acid, H2O2, and salicylic acid repressed the levels of C-GS1 transcripts.
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| | As the continuation of [1], in this present paper we discuss the longitudinal property of the three-electrode system of lateral logging tool.All the premiss are the same as in [1] except the media are now considered as stratified in structure and the influences of the bore hole and of the invaded zone were neglected. The approximate electric potential fields and the longitudinal geometric factors are given. | | 作为《三电极系侧向测井径向几何因子》一文的继续,本文讨沦了三电极系侧向测井仪的纵向特性。除了现在考虑的介质是层状结构,并且略去了井眼和侵入带的影响之外,所有的前提都和参考资料[1]相同。给出了近似电位场和纵向几何因子。 | | 文摘来源 | | This paper deals with the importance of well-logging as a means of reconnaissance survey for oil and gas. A retrospect of the well-logging work in China since the founding of the People's Republic in 1949 has been made. Certain achievements have been noticed but at the same time it is fully aware of the fact of lagging behind technically. In order to utilize well-logging more effectivelly in the reconnaissance survey for oil and gas, it is urged that its technique must be modernized. The w... | | 本文叙述了测井作为石油普查勘探的一种手段的重要性.对建国三十年来石油普查测井工作的发展作了回顾,评价了所取得的成就,指出了与国际先进水平的差距.为了更好地发挥测井在石油普查勘探中的作用,必须在总结经验教训的基础上,加强测井工作,提高测井技术水平. | | 文摘来源 | | A successive approximation method solving electrostatic field of inhomogeneous medium is proposed, which yields results with increasing accuracy when the number of correction terms increases. The method is verified with a simple example. Geo-metrical factors are defined as the functional derivatives of apparent resistivity with rcspect to conductivity. As in induction logging, we derived radial and axial geo-metrical factors. The integrated radial geometrical factor plotted against L/d is the approxim... | | 本文讨论了介质不均匀性对场的相互作用,用微扰法求出了一系列修正项。这些修正项把均匀介质的电场逐步修改成非均匀介质的电场。随着所含修正项数的增多,所得结果逼近真实值的精度也增加,达到任何预先给定的标准。用一个其严格解已知的例子验证了本方法的正确性。定义几何因子为视电阻率对电导率的泛函微商。利用一级几何因子,我们推导出了径向和轴向几何因子。前者Roy和Dhar已经导出,与我们的结果差一常系数。轴向几何因子可用于直流电测井的数字解释。 | | 文摘来源 | |   | | << 更多相关文摘 |
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