History
History
Walker Geophysical was founded in 1979. Our seismic technology evolved from 1977 when Walker took on a project for Peabody Coal Company to map coal in advance of underground mining. Peabody had recently mined into an old abandoned mine (major safety hazard) and asked if it would be possible to use seismic imaging from the surface to locate the extent of the unknown mine. We were successful in locating two new void areas ahead of mining that had (illegally) been mined out in the early 1930's. At the time, Walker had modified a standard Texas Instruments seismograph (TI-10000) for high frequency recording and made "permissible" explosive charges for the wideband seismic source. The following year Walker contracted Texas Instruments to build a custom high resolution DFS-V system with 4kHz sampling and branched out into exploration not only for coal and underground mining hazards, but shallow oil and gas, minerals, construction site characterization, water resources and well site characterization.
In 1983, Walker’s first overseas consulting project for the company was Project Probe, a seismic survey of Lake Tanganyika. Over the course of the next 34 years, Walker Marine Geophysical has worked on land and marine projects throughout the US, and overseas; from Africa, South America, Australia and New Zealand, to Mauritius, the Middle East and Indonesia.
Today, we record land 3D seismic using our state-of-the-art autonomous nodes (hundreds) and new (2016) INOVA vibrator source; all non-invasive. Autonomous nodes allow for both passive listening and active source recording. Our marine work is with towed digital solid streamers using a very small air gun array seismic source for either 2D or 3D high resolution surveys with minimum environmental impact. Special case marine 3Ds can be run using ocean bottom nodes (hundreds) instead of streamers.
