Projects

SEQ Drilling were contracted to complete a 600metre long HDD crossing under 2x mountains and large gully's and through thick bushland to install a new HDPE duct to allow a fiber optic cable to be connected to an existing phone tower. 

A Vermeer D100x120 Drilling rig was used with a 350gpm fluid recycler. The hole was drilled using a mud motor and TCI tricone drilling bit due to the hard rock formation throughout the entire bore length. 

With a new bridge being constructed across Youngs crossing, Petrie, existing high voltage overhead powerlines needed to be relocated below the north pine river and sideling creek. SEQ Drilling were contracted to complete the HDD scope. A Vermeer D60x90 HDD rig was utilized with a 250gpm fluid reclaimer to complete both bores. The first bore being 120 meters long containing 4x 140mm electrical pipes and the second bore being 280 meters long and containing 4x 140mm electrical pipes. The bores took place in mixed ground conditions of sand, cobble, and extremely hard rock. SEQ Drilling utilized a wide range of drilling fluids and tooling and were able to complete both bores without the use of surface casing. SEQ Drilling were able to provide crews to operate 24 hours around the clock to bring in project completion and keep the overall project on schedule. 

Whilst installing a new fiber optic cable, it was discovered the existing conduit crossing the Gwydir River was exposed on the river bed. SEQ Drilling were contracted to install a new pipe beneath the river to future proof the new cable being stalled. SEQ Drilling utilized a Vermeer D60x90 HDD rig to complete the installation. The installation was completely installed in sand with cobbled rock which prove difficult to keep a hole stabilized and open. Through our past experience and extensive knowledge of drilling fluid systems we were able to successfully complete the bore on time with the new pipe being located 11 meters below the river bed ensuring it never washes out and becomes exposed. 

After extensive rain and flooding, existing communications pipes and cables had been washed off the underside of the bridge and cables damaged leaving critical communications networks offline. SEQ Drilling were contracted to install 2x 110mm pipes beneath the river over a distance of 240 meters to provide a solution that would be future proof and flood resistant. SEQ Drilling utilized a Vermeer HDD rig to bore through the clay, sand and rock beneath the Mary river. A hole opener style reamer was then attached and the borehole was upsized to accommodate the twin pipes. The HDPE pipes were butt welded together and pulled in beneath the river successfully. 

After several HDD contractors had attempted a crossing under the Macquarie River in Dubbo, SEQ Drilling were contracted to complete the works. On a tight deadline we were able to mobilize a drilling spread from QLD to Dubbo, NSW in 4 days. The crossing involved drilling through a layer of very large cobbles surrounded by coarse sand, and then drilling through fine sand in a running water table below the river. With bedrock more then 50 meters deep, the bore had to be completed in the unfavorable running sands. Through critical drilling fluid selections and techniques, the bore was able to be completed and a 280metre steel duct installed 16 meters beneath the river bed. 

SEQ Drilling were contracted to complete a crossing of 275 meters below a river within a cattle property. The greatest challenge being logistics and access to the site. Access to the launch side of the side was by 4x4 or high clearance truck only and involved crossing a rock causeway through another point of the river. SEQ Drilling were able to walk in a tracked HDD rig, and offer specialized trucks and vehicles to transport water tanks and fluid recyclers onto site rather then typical use of trailer mounted units. Access to the receiving pit was via a steep 4x4 track over a mountain. With no option for a return pump or vacuum truck for drilling mud, the bore was designed by SEQ drilling to that the pilot bore was stopped short, and reaming conducted in a forward reaming arrangement to force the drilling fluids to return to the launching side. On completion of reaming a tracked excavator was taken across the track and dug a hole on the bore line to pull in product pipe. Product pipe was strung and welded on the launch side, then pulled across the river using one of our Vermeer Tractors.