Technology

The Tools to Unlock Your Reservoir

PGS brings expertise and innovation to land seismic surveys. Utilizing versatile field equipment, our land crews acquire efficient, accurate, reliable and cost-effective single and multi-component seismic data, regardless of terrain conditions.

PGS alone can provide production-proven P-and S-wave multi-component acquisition using rotating actuators. Combining new techniques with the industry’s most powerful source vibrators, the Mertz M26HD/623B series pump out an earth-shaking 62,000 pounds, PGS has redefined the state-of-the-art for land seismic imaging.

For faster turnaround time and higher data quality, PGS also offers a broad suite of in-field seismic data processing services.

HD3D

3D seismic surveys have seen increased usage since the mid-1970s, and have been acknowledged as a primary reason for increased oil exploration success over the last two decades.   In the early years of 3D seismic acquisition, most survey designs were restricted by a combination of cost, equipment limitations, and a lack of understanding of the benefits of good spatial and offset sampling.  Also, owing to some of the above limitations, many surveys were designed with a narrow range of azimuths.  Recently, there have been significant improvements in technology that now permit the acquisition of surveys with much higher trace densities than previously possible, with improved spatial, offset and azimuth sampling. 

It is generally recognized by most geophysicists that the “perfect 3D” would essentially have “stack array” in both X and Y.   The necessary subsurface spatial sampling would be calculated, and for every shot there would be an area or “disc” of receivers surrounding the shot with the required receiver spacing.  The radius of the disc would be the limit of the useful/useable offset contributions.  The patch would then be repeated with equally sampled shots in both X and Y.  This would result in a survey with very high trace density that would potentially be very expensive, and might also have high environmental impact.  However, from a geophysical standpoint it would have both excellent azimuth sampling and excellent offset sampling along all azimuth ranges.  Since we generally cannot afford to acquire the perfect survey, we normally need to acquire a subset or some subsets of the above geometry. 

 CPM Fold Article (1 MB)

Ultra-Deep Regional Program

 "Back to the Shelf" presentation (3121 KB)

Multi-Component Seismic Services

PGS Onshore has multi-component phones and vibrators with rotating base plates that are capable of creating shear waves.  These are the Mertz M26/623B series with an earth shaking force of 62,000 pounds.   Multi-component services are entering the marketplace, although demand is mainly on test survey basis.  Clients are interested in evaluating results of this emerging technology to identify potential added value.

PGS Onshore has an advantage in this emerging market with our:

• Experience acquiring 74 square miles of land multi-component 3C and 9C datasets in eight areas
• Large available channel counts
• Shear wave vibrators with rotating base plates

Shear Wave Source
We are the only service company to have constructed shear source vibrators with the most mass, improved mechanics and electronics, and rotating actuators.