Adaptive wavefront reconstruction

Adjusting seismic data to tie to other data

AGC circuit for televiewer

Amplitude preserving prestack migration method

Analog-to-digital converter for seismic exploration using delta

Analysis of migration velocity by migration of velocity spectra

Analysis of velocity data

Analyzing 2-D surface and/or borehole seismic data to locate...

Anisotropy measurement while drilling

Anti-noise component for flat cable

Aplanatic geophysical exploration system

Apparatus and method for accurately determining the location of

Apparatus and method for acquiring seismic data

Apparatus and method for compressing seismic data

Apparatus and method for enhancement of the signal-to-noise rati

Apparatus and method for evaluation of picking horizons in 3-D s

Apparatus and method for evaluation of score failures in picking

Apparatus and method for planting seismic sensors

Apparatus and method for seismic data acquisition

Apparatus and methods for transmitting unsolicited messages...