Drilling fluids with a very low friction coefficient
Increasingly longer bores alongside with the heavy drill pipes in HDD technology generate a high friction coefficient. Has the recently in Europe drilled distance of 4600 m marked a limit?

Rafał Leśniak, Heads sp. z o.o.
AGH University of Science and Technology in Cracow graduate. Since 1999 he has been professionally involved in horizontal drilling technology projects. Since 2000 he has been working for HEADS sp. z o.o., where he specializes in drilling fluids technology, configuration of drilling kits used for drilling pilot holes and widening holes inin all geological formations. In Europe he actively participates in constructing both steel and PE pipelines up to 2000 m in length and 1422 mm in diameter. Author of the articles published in trade press.