Results 231 to 240 of about 3,932,847 (285)
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MECHANISM OF ANNULAR SPACE UNSEALING DURING HYDRAULIC FRACTURING
Journal of Mining Science, 2021The article discusses the mathematical modeling results on formation of concentration zones of failure stresses in annular space of a well during hydraulic fracturing of productive formations from vertical or nearly vertical boreholes. The rigid connection between the cement lining and rocks fails because of a thin clay layer in-between, which leads to
A M Svalov
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Strongly Annular Functions in Bergman Space
Computational Methods and Function Theory, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Vibration Control of Annular Multi-rigid Space Structure
Lecture Notes in Electrical Engineering, 2022Cong Xue, Weiran Yao, Guanghui Sun
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Annular crack in a thermoelastic half-space
Journal of Thermal Stresses, 2020The purpose of this article is to analytically investigate the three-dimensional thermoelastic fields in a semi-infinite medium weakened by an annular crack.
B. Kebli, Z. Baka
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Annular crack in an elastic half-space
International Journal of Engineering Science, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
B. Kebli, Z. Baka
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Acoustics of the Annular Space of Producing and Injection Wells
Russian Journal of Nondestructive Testing, 2004A model of the propagation of an acoustic wave in the annular space of producing wells is proposed. The results of calculating echograms of the annular space as functions of well dimensions, the base frequency of the sounding pulse, and the liquid level are given. The developed theory, algorithm, and program of the calculations make it possible clearly
G. A. Budenkov +2 more
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An annular slot antenna on a dielectric half-space
IEEE Transactions on Antennas and Propagation, 1994The radiation properties of both singly and multiply fed annular slot antennas on a dielectric/air interface have been analyzed using Galerkin's method applied in the Hankel transform domain. The validity of our method has been confirmed through comparison with both theoretical and experimental results.
C.E. Tong, R. Blundell
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Device for Detecting the Liquid Level in the Annular Space
Russian Journal of Nondestructive Testing, 2003An Echo-2 device assigned for measuring the liquid level in the annular space of producing and injection wells without the overpressure is described. Requirements for the functionally lightly designed and cheap device are considered. The design of the device which uses a rubber corrugation representing an element of the device frame as an acoustic ...
G. A. Budenkov +2 more
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