Probe drilling is generally used in the construction of tunnels, cross passages and shafts. They are used to investigate the ground conditions and water pressures that lie ahead of the excavation and mean that geotechnical design assumptions can be confirmed so that the construction may proceed with confidence.

Probe holes can be drilled radially, axially, or inclined upwards or downwards of distances up to 25m depending on ground conditions. A stuffing box or a blow-out preventer is often needed to reduce the risk of ground loss during drilling. Where probe drilling identifies unstable conditions, bores can be constructed as either wellpoints or ejector wells to allow immediate pore pressure control and enable excavation to continue.

How WJ Canada Can Help

Our unique fleet of compact drilling rigs can be operated in restricted access and enclosed space environments. These drilling rigs have fully articulated masts are suitable for both downward and upward drilling and for elevated crown installations. The rigs can be adapted for auger drilling, cased rotary drilling and lost bit drilling with water or air flush. Our highly skilled management and drilling installation team can take care of the design and installation of a range of probing applications.

No matter what your probe drilling requirements are, the team at WJ Groundwater will be pleased to advise and talk through your options.

Installation of water well with rotary drilling rig

Wells are drilled and constructed for a range of applications including:

• Dewatering & Groundwater Control
• Remediation & Treatment
• Testing Services including pumping and thermal response testing
• Geothermal for heating and cooling used within Ground Source Energy Systems

Whatever the purpose, it is essential that the wells are designed and constructed safely and effectively.

Design

The wells need to be designed according to the best location, depth and pumping application. Drilling rigs and ancillary equipment are carefully selected according to the type of ground conditions, well specification and any site access constraints.

Installation

Common rotary drilling techniques use fully cased systems, open-hole drilling with a mud or water flush, and down-the-hole air hammers. Where conditions suit, cable percussion drilling techniques are often used to supplement our operations using experienced water-well drillers capable of drilling at large diameters.

How WJ Canada Can Help

Whether you are looking for a single large water supply well or an array of wells, WJ Groundwater can provide a complete service solution for all your well drilling requirements. Our highly skilled management and drilling installation team can take care of the design and installation of a range of well diameters, depths and inclinations aand with our innovative range of contemporary drilling rigs we have a drilling rig to suit most applications .

No matter what your well drilling requirements are, the team at WJ Groundwater will be pleased to advise you and talk through your options.

Installation of water well with cable percussion drilling rig