Unfortunately, the contracted company couldn’t deal with the free flowing artesian well and left site. Once a well or borehole is sunk into an artesian aquifer, pressure is released and water comes to the surface – this can result in flow rates from a gentle overflow to a high pressure jet of water. Fortunately, SafeLane’s borehole team has extensive experience with artesian water. SafeLane’s Chris Cox and Ray McGhin attended site to assess the situation and employed the following strategy, capping the artesian pressure and resolving the situation: –. SafeLane’s borehole experts responded to an emergency callout from a construction client whose site was flooding because of a free flowing artesian well. Managing and indeed utilising an artesian aquifer requires specialised expertise. The construction client had employed a drilling contractor to install ground source heat pump boreholes. get in touch for a free initial consultation. However, had they chosen to utilise the overflowing ground water, SafeLane could have pressure grouted the casing and installed a bolted flange before putting on a pressurised cap to make the borehole fully functional. This resulted in a capping of the artesian pressure. Once penetrated, the artesian aquifer’s natural pressure released water from the borehole at roughly 1.2 bar of pressure. Flowing artesian wells are generally controlled by the use of a sealed surface casing and the use of control valves on the production casing. If not done correctly you can’t seal it and the water will simply continue flowing. However, during the installation phase, they had encountered artesian water. Once penetrated, the artesian aquifer’s natural pressure released water from the borehole at roughly 1.2 bar of pressure. On this occasion the client wanted the borehole sealed and the site reinstated. install ground source heat pump boreholes. The client found himself in a situation with the borehole overflowing 24/7, flooding the site and creating difficult conditions for staff and subcontractors to work in. SafeLane’s borehole drilling experts recently responded to an emergency callout from a house builder, whose construction site in Yorkshire was flooding. Artesian water is trapped within a confined natural underground reservoir under positive pressure. They then sealed the borehole to prevent the water coming to the surface again. So, whether you’re currently struggling with an out of control free flowing artesian well as was the situation on site in Yorkshire, or you want to safely and effectively tap into the benefits of an artesian aquifer, get in touch for a free initial consultation. Capping artesian pressure is an even more specialist procedure. Artesian water is trapped within a confined natural underground reservoir under positive pressure. Using a cement bentonite grout, they pressure grouted the borehole. As seen in the Figure 1, the use of multiple pressure relief fittings may be required to gain control of a flowing well. Finally, they cut the steel casing below the ground level and reinstated the ground, leaving it as per the client’s requirements with a gravel surface finish. Unfortunately, the contracted company couldn’t deal with the free flowing artesian well … Find your solution: talk to SafeLane Global now. It’s critical to seal such a borehole or well correctly to protect the integrity of the aquifer. Fortunately, the client called SafeLane’s borehole engineering experts who deployed to site immediately to cap the artesian pressure.

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