DBPapers

ROTARY STEERABLE SYSTEMS APPLICATION IN CROATIA

AUTHOR/S: K. SIMON, D. MATANOVIC, N. GAURINA-MEDIMUREC, B. PASIC, M. MALNAR
Sunday 1 August 2010 by Libadmin2008

8th International Scientific Conference - SGEM2008, www.sgem.org, SGEM2008 Conference Proceedings/ ISBN: 954-918181-2, June 16-20, 2008, Vol. 1, 575-580 pp

ABSTRACT

The introduction of positive-displacement steerable motors in directional drilling
practice offers better directional control in comparison with earlier used directional
drilling systems and makes directional drilling widely accepted technology. But some
disadvantages of the technology as drilling the curved parts of the wellbores in sliding
mode and hole cleaning connected problems, demand further development of
directional drilling systems. That results in rotary steerable systems development
introduced in the practice in the late 1990s. Systems enable continuous rotation of the
drillstring during drilling and more efficient transfer of weight to the bit. That results in
higher rate of penetration and improved hole cleaning.

Application of the rotary steerable system in a hole drilling in the Adriatic Sea area in Croatia as
well as characteristics of the system and results of the application will be presented in the paper.

Keywords: directional drilling, downhole motor, rotary steerable system.