Cement Evaluation with Ultrasonic and CBL/VDL Combination showing Microcannulas. Figure shows responses from the ultrasonic and CBL Cement bond log /VDL logs run in a well-cemented with a 12 lbm/gal cement. The logs were run at two wellhead pressures: zero and 2000 psi. The cement bond index at these pressures...
LWD geoVISION (Logging-While-Drilling geoVISION)
The Logging-While-Drilling-geoVISION (LWD-geoVISION) tool makes later log resistivity measurements. As a formation evaluation tool, its application is limited to conductive muds. It may be run in several configurations and provides up to five resistivity measurements. The geoVISION contains a scintillation gamma-ray detector which supplies a total gamma-ray measurement. An azimuthal...