Applied Geophysics
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Inverting reservoir parameters in a two-phase fractured medium with a niche genetic algorithm
Applied Geophysics - Tập 9 - Trang 440-450 - 2012
In this paper we calculate a synthetic medium surface displacement response that is consistent with real measurement data by applying the least-square principle and a niche genetic algorithm to the parameters inversion problem of the wave equation in a two-phase medium. We propose a niche genetic multi-parameter (including porosity, solid phase density and fluid phase density) joint inversion algo...... hiện toàn bộ
Groundwater resources survey of tongchuan city using the audio magnetotelluric method
Applied Geophysics - Tập 17 - Trang 660-671 - 2019
The development of Tongchuan City, Shaanxi Province, located in the northwestern region of China, is restricted by water resources. The direct current resistivity and induced polarization sounding methods are typically applied in finding urban groundwater. These methods, however, are not effective due to their complicated topography and geological conditions. The application practice shows that th...... hiện toàn bộ
Passive multiple reverse time migration imaging based on wave decomposition and normalized imaging conditions
Applied Geophysics - Tập 16 Số 3 - Trang 338-348 - 2019
Environmental simulation platform and its application to geodesic instruments for a performance study
Applied Geophysics - Tập 17 Số 5-6 - Trang 756-763 - 2020
Sparse constrained encoding multi-source full waveform inversion method based on K-SVD dictionary learning
Applied Geophysics - Tập 17 - Trang 111-123 - 2020
Full waveform inversion (FWI) is an extremely important velocity-model-building method. However, it involves a large amount of calculation, which hindsers its practical application. The multi-source technology can reduce the number of forward modeling shots during the inversion process, thereby improving the efficiency. However, it introduces cross-noise problems. In this paper, we propose a spars...... hiện toàn bộ
Prestack migration velocity analysis based on simplified two-parameter moveout equation
Applied Geophysics - - 2016
Slope displacement prediction based on multisource domain transfer learning for insufficient sample data
Applied Geophysics - - Trang 1-9
Accurate displacement prediction is critical for the early warning of landslides. The complexity of the coupling relationship between multiple influencing factors and displacement makes the accurate prediction of displacement difficult. Moreover, in engineering practice, insufficient monitoring data limit the performance of prediction models. To alleviate this problem, a displacement prediction me...... hiện toàn bộ
Dual laterolog borehole correction based on dynamic tool constants
Applied Geophysics - Tập 9 - Trang 414-420 - 2012
The positive and negative difference of deep and shallow resisitivity in formation without invasion is caused mainly by the fixed two tool constants from numerical simulations. A dynamic calibration method for tool constants is proposed based on the effects of the mud and formation resisitivity ratio on the two constants calculated using the finite element method (FEM). Finally, four specific exam...... hiện toàn bộ
Response simulation and theoretical calibration of a dual-induction resistivity LWD tool
Applied Geophysics - - 2014
Application of a new qeneration of geophonesto improve seismic acquisitionin onshore-offshore transition areas
Applied Geophysics - Tập 2 - Trang 235-240 - 2005
In this paper, we review the differences between velocity geophones (VG) and acceleration geophones (AG) and their effect on seismic signals acquired in onshore-offshore transition areas. We present a new generation of Land Piezoelectric Geophone (LPG) and analyze its performance. Our field experiments demonstrate that our new LPG can be used to substitute for VGs in order to eliminate phase, freq...... hiện toàn bộ
Tổng số: 705
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