摘要声波测井技术作为地层评价的重要手段已经逐步从电缆测井向随钻(logging while drilling,
LWD) 测井过渡, 未来随钻声波测井在油气勘探开发中将发挥重要的作用. 以随钻声波测井关键 …

We investigate the eccentricity effects and depth of investigation (DOI) of two typical types of
azimuthal resistivity Logging-While-Drilling (ARLWD) tools (Type I: an axial transmitter with a …

Cement-bond evaluation is of great significance in oil/gas development, geothermal
production, and CO2 storage. Advanced ultrasonic pitch-catch measurement exhibits poor …

The bonding quality of the seal formed by the cement or collapse material between casing
and formation rock is critical for the hydraulic isolation of reservoir layers with shallow …

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 …

This book covers the principles, historical development, and applications of many acoustic
logging methods, including acoustic logging-while-drilling and cased-hole logging methods …

Radiation and reception responses of a dipole acoustic logging tool placed eccentrically in
borehole fluid are an interesting and important topic in acoustic reflection imaging. Herein …

The accuracy of velocity measurements made using a monopole acoustic logging-while-
drilling (ALWD) measurement tool is influenced by the eccentering of the tool due to …

Elastic properties of rock are being used to help evaluate reservoir properties. Distinctive
properties of shale, such as low porosity and permeability, anisotropy, and complicated …

The acoustic method, being the most effective method for cement bond evaluation, has been
used by industry for more than a half century. However, the methods currently used are …