Energy sources Jack

Jacks are the lightest, most compact, and fastest energy sources in the world that ensure the operation of borehole sparker and electrodynamic sources used in geophysical surveys including cross-hole seismic testing (ASTM D4428/D4428M) and tomography (CST), high-resolution VSP, and reverse VSP or vertical seismoacoustic profiling (VSaP).

Our convenient and intuitive Jack control panel allows flexibility in configuring the shooting mode. It is easy to program the cycle with the required number of shots and the period between them, the required energy and power consumption, as well as triggering from a seismic station or a synchronization system. Remote control unit JackPad duplicates the control panel and allows the seismic station operator to fully control the entire system. It is important to say that JackPad also provides additional safety of work.

In Jack-500 and Jack-1200 models, pulse chargers provide a charge rate 500 J/s. More powerful versions are equipped with even faster chargers with a rate up to 3000 J/s and adjustable maximum power consumption. Thus, all energy sources Jack can work with compact portable 110 / 220 V generators (with power from 1 kW). Jack’s design deploys a reliable thyristor key, that enables obtaining a really short high-voltage electric pulse.

Compact size, light weight, shockproof and dustproof casing, intuitive user interface, remote control unit, as well as high charging rate make energy sources Jack the most modern and truly mobile devices compared to all the alternatives available on the market. Specialized energy sources MultiJack that support the latest shooting technologies, as well as a whole line of sources and other necessary equipment are available for marine high-resolution seismic surveys.

• Borehole seismic surveys on land and in water areas using cross-hole seismic testing and tomography (CST), vertical seismic profiling (VSP), high-resolution VSP, reverse VSP, vertical seismoacoustic profiling (VSaP)
• Engineering surveys for the construction of highly sensitive facilities
• Search for karsts, fractured and deconsolidated zones, and mining geophysics
• Geotechnical monitoring of the soil foundation and determination of its load-bearing capacity, including in accordance with ASTM D4428 / D4428M standard
• Cracks location in concrete hydroelectric dams
• Mineral exploration

• Energy source Jack
• Synchronization connector (2 pcs.)
• Power cable
• Documentation kit

• Remote control unit JackPad
• Borehole sources of pressure (P) waves (Pulse) or shear (S) waves of horizontal (SHock) and vertical (GeoSV) polarization
• High frequency seismic stations Sigma 4+ and DAQlink 4
• Borehole hydrophone array WellStreamer
• Single and multi-level 3C borehole probes with spring (GStreamer), pneumatic (GStreamer-P), and electromechanical (GStreamer-E) anchoring systems
• Winches and reels BGW / BGW light / RT-4S for cable lines
• Borehole inclinometers INCLIS
• Universal switchbox for source connection

We can develop a custom energy source with the required power and configuration. For the correct specification of a custom design, please contact us using any method indicated on our website.

Example of CST field data and its spectrum. Blue — the entire wave pattern, green — the first break window, brown — noise before the target waves’ arrival).

Data obtained with borehole sparker Pulse, energy source Jack-2500HP, and hydrophone array WellStreamer.

CST data obtained with borehole sparker Pulse, energy source Jack-2500HP and hydrophone array WellStreamer.

The distance between the central and lateral wells is about 30 m.

You can read about the technology of cross-hole seismic testing and tomography (CST) here.