Herrenknecht's Direct Pipe Technology Used For Beaver River Pipeline Crossing

March 2014, Vol. 69 No. 3

For the first time, a Canadian construction company has installed a pipeline using the Direct Pipe technology from Herrenknecht.

Crossing beneath the Beaver River in the province of Alberta with a 42-inch pipeline (1,067mm) was successfully completed in two weeks.

Wes Lingerfelt operated the Direct Pipe system, which Canadian tunneling company Michels Canada ordered from Herrenknecht for the Beaver River pipeline crossing in the province of Alberta. The pipeline had to be built over a length of 340 meters (1,115.5 feet) 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 meters below the river bed. The target pit was reached after 13 days of drilling between the start on Aug. 24, 2013 and breakthrough on Sept. 8, 2013.

Impressed by the performance capacity of the technology, Wes Lingerfelt said, “We reached an impressive 68 meters (233 feet) on our best day.”

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 kilometers (149 miles). 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 developed by Herrenknecht combines the advantages of microtunnelling and horizontal drilling technology. In one 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 meters (4,921 feet).

To date, 35 projects have been completed successfully using Direct Pipe in Germany, Great Britain, Italy, Canada, the Netherlands, Thailand and the USA. +49 (7824) 302 7070, herrenknecht.com