Compressional velocity correction apparatus, methods, and systems

摘要

In some embodiments, an apparatus and a system, as well as a method and an article, may operate to measure compressional wave velocities in a geological formation surrounding a first well, to provide measured compressional wave velocity data, and to subsequently determine corrected compressional wave velocities for the first well. These corrected compressional wave velocities for the first well may be determined using a combination of the measured compressional wave velocity data and corrected compressional wave velocity data associated with one or more second wells. Predicted pore pressure data for the first well may be subsequently generated, using the corrected compressional wave velocities for the first well. Additional apparatus, systems, and methods are described.

主权项

1. A system, comprising:
a housing to be operated in a first well; and a processor to receive measured compressional wave velocity data associated with the first well, to determine corrected compressional wave velocities for the first well using a combination of the measured compressional wave velocity data and corrected compressional wave velocity data associated with one or more second wells different from the first well, the corrected compressional wave velocity data associated with the one or more second wells derived directly from measured shear wave velocity data of the respective one or more second wells, and to generate predicted pore pressure data for the first well, using the corrected compressional wave velocities.