Drilcorp has recently completed a specialist site investigation project at the proposed site of a new development in Anglesey.

The main site investigation contractor needed a specialist company that could ensure high quality cores while maintaining, as near as possible, truly vertical boreholes to the base of the borehole.

Drilcorp tackled the work with a Beretta rotary top drive track mounted drilling rig with clean water flush.

 

The in-hole coring equipment was a Geobore ‘S’ wireline system manufactured by Atlas Copco. All cores recovered were of extremely good quality with virtually 100% recovery throughout.

JKS Boyles offered technical advice on the choice of core bit providing Series 8 impregnated slot face discharge diamond bits with 8mm of diamond impregnation. This was an excellent choice providing good penetration in the medium to hard strata to be cored and a bit life in excess of 120mtr.

Verticality tests were carried out at 20mtr intervals on all boreholes with our own in-house verticality tool a Reflex Maxibor ll Optical Borehole Survey System. This versatile tool has an outside diameter of only 44mm and can be either pumped into a borehole or run in by wireline.
All boreholes were well within the required verticality parameters throughout.

Coreliner was used to ensure that the cores maintained their integrity during transportation from the drill site to the logging shed.