supported by the National Natural Science Foundation of China (Grant No. 40774099, 10874202 and 11134011);National 863 Program of China (Grant No. 2008AA06Z205)
It is still argued whether we measure phase or group velocities using acoustic logging tools. In this paper, three kinds of models are used to investigate this problem by theoretical analyses and numerical simulations...
supported by the CRGC Consortium in Australia;the National S&T Major Project of China (Grant No. 2008ZX05008- 006-034);the National Natural Science Foundation of China (Grant No. 40774099)
I present an algorithm that uses cross-dipole wireline data only in order to estimate the HTI stiffness tensor for sandstone formations under in-situ asymmetric lateral (azimuthal) stress conditions.The algorithm is b...
supported by the National Natural Science Foundation of China(No.40774099);the National High-tech Research & Development Program(No.2008AA06Z205)
The acoustic field in a cased hole is studied through numerical modeling by combining experiment measurement when the first and scond interfaces are bonded well. The effects of the density of the cement, the diameter ...
supported by the National Natural Science Foundation of China (Grant No. 40774099);the National High-tech Research & Devel-opment Program (Grant No. 2008AA06Z205);Special Ocean Com-monweal Research Program (Grant No. 200805005)
In this paper, the feasibility of measuring the gas volume fraction in a mixed gas-liquid flow by using an acoustic resonant spectroscopy (ARS) method in a transient way is studied theoretically and experimentally. Fi...
supported by the National Natural Science Foundation of China(Grant No.40774099,10874202);the National High Technology Research and Development Program of China(Grant No.2008AA06Z205)
Based on strong and weak forms of elastic wave equations, a Chebyshev spectral element method (SEM) using the Galerkin variational principle is developed by discretizing the wave equation in the spatial and time dom...