Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
MULTIPHASE MODELLING OF DRILL PIPE ROTATION EFFECTS ON CUTTINGS TRANSPORT IN HORIZONTAL WELLS
Submission Author:
Ayrton Cavallini Zotelle , ES , Brazil
Co-Authors:
Ayrton Cavallini Zotelle, Joao Henrique Sartori, Renato Siqueira, Michel de Oliveira dos Santos
Presenter: Ayrton Cavallini Zotelle
doi://10.26678/ABCM.COBEM2019.COB2019-2270
Abstract
One of the main problems in the horizontal wells drilling process is the cuttings transport mechanism through the annular. This study uses CFD multiphase flow to simulate and investigate the drill pipe rotation effects on pressure drop and cuttings transport inside of an eccentric annulus on horizontal wells. The drilling fluid has non-Newtonian behaviour, characterized by the Herschel-Bulkley rheological model and the cuttings from the formation here modeled considering spherical shape particles with 3 mm diameter. The results shows that although the increase in the drill pipe rotation increases the pressure drop, it contributes to the removal of the particles from the wellbore, reducing the cutting concentration inside the annulus. The rotation displaces the particle bed in the direction of the rotation to the region of higher longitudinal velocities, improving the efficiency of the cleaning process.
Keywords
cuttings transport, cleaning process, horizontal wells., multiphase flow, drill pipe rotation
