«Onshore and offshore oil and gas well construction»

Results of numerical simulation of washing liquid hydrodynamic flow near a centralizer-turbolizer

UDC: 622.24.057.9
DOI: -

Authors:

¹ Almetyevsk State Petroleum Institute, Almetyevsk, Russia

Keywords: well drilling, turbine centralizer, turbulent flow, numerical modeling, well flushing, centralizer-turbolizer

Annotation:

The authors of the article present the results of numerical modeling of the flushing fluid hydrodynamic flow in the vicinity of a centralizer-turbolizer for drill pipes, developed at the Department of Oil and Gas Wells Drilling of the Almetyevsk State Petroleum Institute. Numerical modeling of the flushing fluid hydrodynamic flow was carried out for nine variants of centralizer-turbolizer profiles for drill pipes. It was revealed that the local maximum of the flow velocity value is observed in the center of the centralizer, in the zone in which there is a sharp jump in the boundary conditions. As a result, vortices are formed in this zone, determined to a large extent by the rotation speed of the centralizer-turbolizer Ω. It agrees with previous theoretical constructions. The authors of the article present the results of calculation of the flushing fluid velocity field in the vicinity of a rotating centralizer-turbolizer for drill pipes as well as the dependences of the turbulent flow amplitude, calculated by the average kinetic energy as a function of fluid flow and amplitude of the turbulent flow, normalized relative to profile No 9, etc.

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