Wei Li
Saudi Aramco
Adaptive filterFilter (signal processing)Dispersion (water waves)SlownessPhase (waves)OpticsWavenumberPhysicsGeologyMode (statistics)Finite element methodSaturation (chemistry)Magnetic monopoleBoreholeNoiseInterference (wave propagation)Perfectly matched layerDipoleAmplitudeEstimatorField (physics)Eccentricity (behavior)AcousticsDrillingRock classificationWell loggingQuadrupoleNoise (electronics)PetrophysicsMechanicsStructural engineeringGeophysics
9Publications
3H-index
13Citations
Publications 7
Newest
#1Wei Li (China University of Geosciences (Beijing))H-Index: 3
#2Douglas R. Schmitt (U of A: University of Alberta)H-Index: 33
Last. Changchun Zou (China University of Geosciences)H-Index: 14
view all 4 authors...
Source
#1Xudong Hu (China University of Geosciences)H-Index: 3
#2Changchun Zou (China University of Geosciences)H-Index: 14
Last. Kouamelan Serge Kouamelan (China University of Geosciences)H-Index: 2
view all 9 authors...
Source
#1Wei Li (China University of Geosciences (Beijing))H-Index: 3
#2Changchun Zou (China University of Geosciences)H-Index: 14
Last. Cheng Peng (China University of Geosciences (Beijing))H-Index: 5
view all 4 authors...
Abstract Pore geometry is one of the main factors that may lead Archie's equation inaccurate in low and middle porosity sandstone formations. In order to build a robust relationship between the formation resistivity factor and the porosity for the low and middle porosity sandstone formations, we presented a pore-throat model (PT model) that considered the effect of pore geometry. The PT model is an effective medium model that treats the pore space as a series of a spherical pore and two throats....
Source
#1Wei Li (China University of Petroleum)H-Index: 3
#2Guo Tao (China University of Petroleum)H-Index: 12
Last. Carlos Torres-Verdín (University of Texas at Austin)H-Index: 35
view all 4 authors...
ABSTRACTWe have developed a nonparametric matched filter-bank spectrum estimator, referred to as the forward and backward (FB) amplitude and phase estimation (FBAPES) method, to perform dispersion analysis of borehole array sonic measurements. Different from conventional dispersion analysis methods, the amplitude and phase estimation method estimates the dispersive properties of wave modes by simulating the statistical character of interferences from noise and other modes taking place at the sam...
Source
#1H. Y. Wang (China University of Petroleum)H-Index: 17
#2Guo Tao (China University of Petroleum)H-Index: 12
Last. Wei Li (China University of Petroleum)H-Index: 3
view all 4 authors...
We developed a finite element method (FEM) in conjunction with a Complex-Frequency-Shifted Perfectly Matched Layer (CFS-PML) boundary to effectively study the wave field radiated by acoustic multi-pole LWD tool in horizontal and highly deviated wells surrounded by slow formations. We found that under the condition of tool eccentricity in these wells, some non-monopole modes would appear in monopole measurements and Stoneley (St.) mode would appear in dipole measurements; the flexural collar wave...
Source
#1Chicheng Xu (University of Texas at Austin)H-Index: 9
#2Carlos Torres-Verdín (University of Texas at Austin)H-Index: 35
Last. Wei Li (China University of Petroleum)H-Index: 3
view all 4 authors...
Summary Borehole geophysical measurements acquired in gas-bearing formations can be significantly influenced by oil-base mud (OBM) invasion. Fluid substitution of density and sonic logs in OBM-invaded gas-bearing formations is necessary but difficult because resistivity logs cannot differentiate the saturations of OBM filtrate and gas. Numerical simulations indicate that invasion of OBM filtrate into gas-bearing formations is typically shallower than 30 cm and exhibits a sharp saturation front. ...
Source
#1Wei Li (China University of Petroleum)H-Index: 3
#2Rui Guo (China University of Petroleum)H-Index: 2
Last. Chicheng Xu (University of Texas at Austin)H-Index: 9
view all 7 authors...
Summary We introduce a new non-parametric matched-filterbank spectral estimator, referred as Amplitude and Phase Estimation (APES), to perform dispersion analysis of borehole array sonic measurements. This method extracts the dispersion characteristics of all wave modes by applying an APES filter to array sonic spectral data and converting the estimated wavenumber to slowness. The implemented adaptive filter in APES ensures that the output signal be sufficiently close to a sinusoid with a design...
Source
This website uses cookies.
We use cookies to improve your online experience. By continuing to use our website we assume you agree to the placement of these cookies.
To learn more, you can find in our Privacy Policy.