Directional Division

Horizontal Directional Drilling

Meehan Drilling Ltd has the technology, the expertise and the specialist knowledge to provide a first class service. Our Portfolio boasts many kilometers of water, gas, telecommunication and sewer pipelines and a variety of successfully completed diverse and challenging crossings. Dependent on ground conditions, we can offer diameters up to 800mm and distances of up to 400 metres.

Pipe installations in rock are also possible with the addition of Mud-motors and Wire Line Tracking Systems.

With over 30 years experience of drilling a wide variety of bedrocks, Meehan Drilling can quickly adapt to changing geology.

Pipe Ramming

Pipe ramming is a trenchless method for installation of steel pipes and casings over distances usually up to 30m (150 ft) up long and up to 1,500mm (60-inches) in diameter, although the method can be used for much longer and larger installations. The method is the most useful for shallow installations under railway lines and roads, where other trenchless methods could cause surface settlement or heaving. The majority of installations are horizontal, although the method can be applied for vertical installations as well.

Pipe Bursting

Pipe bursting is a trenchless method of replacing buried pipelines (such as sewer, water, or natural gas pipes) without the need for a traditional construction trench. "Launching and receiving pits" replace the trench needed by conventional pipe-laying.

An expanding device called an expander head, which may be either pneumatic or hydraulic, is introduced into the defective pipeline through a launching pit. As it travels through the pipeline toward the receiving pit it breaks the pipe into many small pieces, pushing the pieces into the surrounding soil. New pipe is attached to the back of the expander head, replacing the line immediately.