Technical and technological solution to reduce the friction coefficient of the drill string during drilling wells with horizontal sections.

摘要

The most cost-effective at the present stage of development of oil and gas industry is the drilling of wells with horizontal sections. One of the actual problems during the drilling of such wells is to reduce the friction of the drill columns in the borehole. This article considers currently existing methods of reducing drillstring friction against the walls of the well. The various types of lubricating components in drilling fluids in the case of chemical methods are used. The mechanical method assumes the use centralizers, calibrators, oscillators, etc within bottom hole assembly. The paper provides downhole oscillator, developed in Almetyevsk State Petroleum Institute, at department of "Oil and gas wells drilling". This oscillator allows to reduce the coefficient of friction of the drill string to borehole wall, therefore, to bring load to bit and increase the mechanical drilling speed.