| 摘要 |
<p>A logging system for producing borehole images of acoustic properties of formations penetrated by the borehole. images of formation compressional wave and shear wave velocities are generated in real time. The system can be a LWD system with a source section that comprises a unipole, dipole, quadrupole or other acoustic source. The receiver section comprises multiple receiver stations disposed at different axial spacings from the acoustic source. The system requires that the source and receiver sections rotate synchronously as the logging tool is conveyed along the borehole. Receiver responses are measured in a plurality of azimuthal angle segments and processed as a function of rotation angle of the tool. Acoustic parameters of interest are obtained from the azimuthal receiver responses at annotated depths along the borehole and used to produce borehole images of the parameters of interest.</p> |
