BGW winch for borehole seismic survey

BGW is specifically designed for seismic acquisitions in relatively deep wells, when cable and borehole equipment weight do not allow to perform convenient and safe operations.

Even with a borehole depth of 100 m, a standard coaxial cable with a 10-mm² cross section will weigh several tens of kilograms. At depths of several hundred meters, the use of a power cable with a large cross section of the core is required to balance the energy loss due to the ohmic resistance - it is only possible to work with such a cable using a BGW winch.

Depending on the acquisition type, BGW can be equipped with high-voltage or low-voltage multicore slip rings to ensure the operation of the borehole sparker Pulse or borehole hydrophone (WellStreamer) and geophone (GStreamer) arrays. A powerful electric gear motor allows adjusting the speed of the winch drum rotation and fix the equipment at the desired depth. In case of a power cutoff, manual winch operations can be performed. Additional convenience of work is provided by a universal manual winch roller and an integrated counterweight with a wide range of adjustments for various wellheads.

BGW dimensions and the detachable counterweight with the winch roller make its transportation easy and allow one to perform field operations with a stationary winch installed in the back of a pickup truck, a trailer, or a minibus.