Results 11 to 20 of about 55,047 (246)
Application of Atraumatic Fiber Optic Perforation Technology for Directional Well
Cejing jishu, 2023 The permanent optical fiber dynamic monitoring outside casing has become an important direction in the development of smart oilfields. As the key supporting content, the atraumatic fiber optic perforation technology is very important.
LIU Ping +5 more
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Eccentricity Correction of Acoustic Variable Density Logging and Its Application
Cejing jishu, 2023 In order to solve the problems of acoustic wave amplitude reduction and inaccurate cementing quality evaluation caused by the eccentricity of acoustic variable density instrument in logging process, the principle of eccentricity influence of acoustic ...
LIU Dongming +6 more
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Explicit evaluations of log–log integrals
The Journal of Analysis, 2022 AbstractBy investigating a family of log-log type integrals on the unit domain and on the positive half line, we produce a substantial number of new identities, representing the value of the integral with the aid of Euler sums. A new family of Euler sum identities will also be given, thereby extending the current knowledge.
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Design and Performance Test of ENT2465 Long-Life Neutron Tube
He huaxue yu fangshe huaxueThe neutron tube is the core component of the controllable neutron source logging instrument. Its working stability, temperature resistance, neutron yield and other indicators have an important impact on the working performance of instrument. At present,
LIU Ze-wei +9 more
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Journal of Geometry and Physics, 2018 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Adaptive Extraction Method for Array Acoustic Slowness in Through-Casing Logging
Cejing jishuTo overcome the difficulty of extracting formation acoustic slowness in cased holes when the casing and formation are poorly cemented, and to address the limitation that existing methods rely on prior information such as accurate borehole parameters or ...
ZHANG Yongchao +7 more
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A Method for Evaluating the Digital Precision of Induction Logging Tools
Cejing jishuFor an induction tool, its digital precision is critical for ultimate accuracy in actual measurements, and it actually determines the dynamic range of the resistivity, especially the high-resistivities.
ZHAO Yanwei +6 more
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Application of Wireline Formation Tester in Moderate and Low Permeability Depleted Zones
Cejing jishu, 2023 Due to the long extraction time, some fault reservoirs in the BURUN oil field have been depleted, resulting in extremely low formation pressure. In forepart of the project, second generation WFT tool is used.
LIU Yingming +3 more
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Log Unloading at Logging Enterprise Berths
Nova mehanizacija šumarstva, 2022 In the development of market economy in Russia, the main trend in the log processing industry is the implementation of the cutting edge technology and effective innovation in order to boost the labor productivity and reduce the production cost on the basis of environmentally friendly and rational use of timber resources.
Gajsin, Ilshat G. +2 more
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Log Log Laws for Empirical Measures
The Annals of Probability, 1980 Let $(X, \mathscr{A}, P)$ be a probability space and $\mathscr{C}$ a collection of measurable sets. Suppose $\mathscr{C}$ is a Donsker class, i.e., the central limit theorem for empirical measures holds uniformly on $\mathscr{C}$, in a suitable sense. Suppose also that suitable ($P\varepsilon$-Suslin) measurability conditions hold.
Kuelbs, J., Dudley, R. M.
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