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Transient Vibrational Behavior of Particles Inside Viscous Media and Its Applications
Cejing jishuTo explore the transient process of particle vibration inside viscous media and its spectral characteristics, and clarify the generation mechanism and application value of intrinsic noise, a damped oscillation spring oscillator model is adopted to derive
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Acoustic fields for monopole logging while drilling with an eccentric collar
Geophysics, 2021ABSTRACT The acoustic problem of an eccentric drill collar in a fluid-filled borehole has been of interest in the field of acoustic logging while drilling (ALWD) in recent years. To reduce the effects of tool eccentricity on ALWD measurements, studies on acoustic responses under such conditions are essential.
Xiuming Wang, Yunjia Ji, Xiao He
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Novel transmitter transducer for acoustic logging while drilling
Applied Acoustics, 2022Yang Gou, Xin Fu
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MULTIPOLE ACOUSTIC LOGGING-WHILE-DRILLING
ГЕОФИЗИКА, 2022В статье представлены итоговые результаты НИОКР по созданию мультипольного акустического прибора для каротажа в процессе бурения, дан обзор зарубежных прототипов, указан комплекс решенных научнотехнических проблем. Приведены достигнутые характеристики прибора, примеры обработки полевых скважин и анализа данных каротажа.
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Multipole acoustic logging‐while‐drilling
SEG Technical Program Expanded Abstracts 2002, 2002The problem of multipole acoustic Logging-WhileDrilling (LWD) is analyzed. By formulating a multipole acoustic ring source at the rim of the drill collar, we model the characteristics of monopole, dipole, and quadrupole waves in the LWD environment.
X. M. Tang, T. Wang, D. Patterson
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Acoustic Logging-While-Drilling
2020Acoustic logging-while-drilling (ALWD) is an advanced technology developed to determine the formation properties in real-time while drilling. Its advantages include obtaining formation properties while conserving drill-rig time, true formation information without invasion, acquisition of information for drilling safety such as over-pressured formations,
Hua Wang +2 more
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Optimization of the Monopole Acoustic Transducer for Logging-while-Drilling
Chinese Physics Letters, 2014A new design idea for a monopole acoustic transducer which increases the frequency band and improves electromechanical performance is proposed with a focus on the lowest order of the radial and flexural modes. Numerical modeling of the resonance frequencies and electrical conductance are conducted with respect to the dimensions and material parameters ...
Lin Fu, Dong Wang, Xiu-Ming Wang
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Generalized collar waves in acoustic logging while drilling
Chinese Physics B, 2016Tool waves, also named collar waves, propagating along the drill collars in acoustic logging while drilling (ALWD), strongly interfere with the needed P- and S-waves of a penetrated formation, which is a key issue in picking up formation P- and S-wave velocities.
Xiu-Ming Wang, Xiao He, Xiu-Mei Zhang
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Robust Detection and Estimation for Logging While Drilling Monopole Acoustic Data
IEEE Transactions on Signal Processing, 2015In this paper, we present methods and strategies for robust detection and slowness estimation of weak compressional (P) and shear (S) waves in borehole sonic logging in noisy environments such as while logging while drilling, by proposing methods for enhancing the semblance used in the slowness time coherence method used in the logging.
Shuchin Aeron +2 more
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