The borehole source SHock is utilized to generate pressure (P-) and shear waves of horizontal polarization (SH-waves) in wells while performing the operations through crosshole seismic testing (CST) and reverse vertical seismic profiling (RVSP) methods. The operation of the SHock source is provided by the Jack energy sources.
The source generates a shear wave through an asymmetric blow delivered into wall of the well. A rigid pneumo-electric line makes it easy to rotate the source in the borehole, providing generation of “right” and “left” blows. The SHock source allows excitation of a seismic signal in both water-filled and dry wells, which is not feasible for borehole sparkers.
SHock is supplied on a reel equipped with a high-voltage slip ring. Thus, one does not need to disconnect the energy source during operations of winding / unwinding the cable.
|Operating voltage||up to 6000 V|
|Operating energy||up to 1500 J|
|Well diameters||70 - 140 mm|
|Dimensions on a reel||570 × 550 × 650 mm|
|Weight with a reel and a 130 m pneumo-electric line||93 kg|
Are designed to provide functioning of sparkers of different types