Directhit Trenchless Pty Ltd carries quality assurance and the safety of both our employees and
HORIZONTAL DIRECTIONAL DRILLING
Horizontal directional drilling
We carry four (4) machines capable of directional drilling in solid rock. All machines are on rubber tracks which minimises damage, especially in sensitive areas. They are very compact which enables us to set up in confined spaces. When drilling we use recycling systems to power our rock motor and ensure the site and environment is kept free of slurry and spoils. Our machines are capable of drilling both small and large diameter bores, which range in length from as little as 10 meters to over 3,000 meters.
LARGE DIAMETER DRILLING
With the use of high water flow and a specialised recycling system, bores up to 1200mm in diameter can be achieved in various ground conditions.
BLIND HOLE DRILLING
We have developed a technique which enables us to drill and lay a utility pipe without the need of an exit point. This is especially useful for "monitor wells" and "gas extraction wells", and also used in certain kind of environmental remediation techniques. Another useful application is the installation of cathodic protection under fuel storage tanks and steel gas mains.
Directhit has a specialised directional drill unit which is totally self sufficient and has the capability to travel into remote areas inaccessible to even 4WD's. Ideally suited to wet, boggy areas no other service vehicles are required in the operation.
VACUUM EXCAVATION (POT HOLING)
Vacuum excavation is fast becoming the method of choice for service locations as it allows utilities to be visually inspected and verified through small holes. Directhit Trenchless Pty Ltd offers several of these units, in varying sizes, for hire.
MULTIPLE SERVICE INSTALLATION
We carry a large range of reamers, swivels and "towing heads" allowing us to pull back several service ducts in one bore if so required.
We carry several small machines ideal for drilling services from the footpath into the consumers property. They are so compact and versatile that they are capable of entering properties or yards for any requisite work.
Environmental remediation is widely used in Europe and America but is relatively unheard of in Australia. Soil remediation achieved through horizontally drilled wells is attractive to both property owners, environmental consultants and environmental clean up contractors for a number of important reasons. The biggest reason is greater accessibility with minimal disturbance. Horizontal drilling permits flexible access to contaminated underground sites without significant disturbance to buildings, storage tanks, landfill, bodies of water, and other surface or subsurface features. Unlike vertical drilling, horizontal well installation is a low impact construction method that does not interfere with an affected property's normal use. Horizontal drilling equipment is relatively compact and can be placed away from high traffic areas. Wells are surface launched and do not require the excavation of large pits of trenches.
REMEDIATION SYSTEM EFFICIENCY
Because underground contamination often spreads horizontally rather than vertically, a single horizontal well can often reach more of a contaminated zone than several vertical wells, and provide a more efficient delivery / recovery medium for a variety of remediation methods. Horizontal drills are directionally steered, so the path of a welldoer can be precisely controlled for maximum system productivity. Horizontal drilling also helps reduce the risk of spreading contamination to water tables below affected areas.
To complete a typical continuous horizontal well 'screen' material-special slotted pipe that allows liquid contaminants to flow in and/or treatment fluids to flow out is attached to the drill string at the welldoer's exit point and is pulled back to the drilling unit. Various techniques used are:
SLURRY REMOVAL AND PIPE TRANSPORTATION
The company carries specifically designed suction tanks to completely remove all mud and slurries from the work site, along with several pipe reelers for the transportation of continuous pipe.
EXCAVATION AND PIPE LAYING
We carry several excavation machines which enables us to also conduct conventional open cut trenching when required.
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