Direct Pipe installed in Canada for the first time
For the first time in Canada, Michels Canada has installed a pipeline using the Direct Pipe technology from Herrenknecht. Crossing beneath the Beaver River in Alberta with a 42-inch pipeline (1,067 mm) was successfully completed in two weeks. Michels Canada is one of a select group of contractors able to perform Direct Pipe installations, which complements its established HDD and pipeline work in the U.S. and Canada.
Wes Lingerfelt, who operated the Direct Pipe system got up to speed on the jobsite: “We were at the machine seven days a week to get the project finished quickly and efficiently.”
A pipeline with a diameter of 42 inches (1,067 mm, double FBE coating) had to be built over a length of 340 metres under the river. The drill was carried out with an entry angle of four degrees and an exit angle of eight degrees with an overburden of around five metres below the river bed. The target pit was reached after 13 days of drilling between the start on August 24 and breakthrough on September 8, 2013. Lingerfelt was impressed by the performance capacity of the technology: “We reached an impressive 68 metres on our best day.”
Patrick O’Donoghue, Trenchless Crossing Manager at Michels Canada: “Direct Pipe is gaining more and more attention among trenchless tunnelling specialists in North America. We look forward to completing more highquality projects.” The crossing beneath the Beaver River is part of a section of the “Cold Lake Pipeline” extension between La Corey and Hardisty over a total length of 240 kilometres. The client Inter Pipeline Limited is expanding its capacities for the transport of the bitumen gained from oil sands in Cold Lake. The Direct Pipe Technology combines combines the advantages of microtunnelling and horizontal directional drilling technology (HDD). In only one work step, a prefabricated pipeline is installed in the trenchless mode and the required borehole produced simultaneously. This provides for the speedy and highly cost-efficient installation of pipelines with lengths of up to more than 1,500 metres. It is an efficient method for use on projects where geotechnical challenges wouldn’t be a good fit for HDD, such as unconsolidated sand, gravel and cobbles.