TY  - JOUR
TI  - Numerical simulation of transport behaviour of small cuttings in extended reach wells
SP  - 149
N1  - cited By 8
AV  - none
EP  - 168
PB  - Inderscience Publishers
SN  - 17533309
ID  - scholars12164
KW  - Boreholes; Cleaning; Computational fluid dynamics; Drag; Drill pipe; Drills; Efficiency; Infill drilling; Non Newtonian flow; Non Newtonian liquids; Oil well drilling equipment; Rotation; Turbulence models
KW  -  Computational fluid dynamics simulations; Concentration profiles; Cuttings transport; Extended reach drilling; Hole cleaning; K-epsilon turbulence model; Pressure loss; Transport efficiency
KW  -  Transport properties
N2  - The purpose of this study is to examine the effect of drillpipe rotation and cuttings size on hole cleaning efficiency in a horizontal annulus flowing with a non-Newtonian fluid. It adopts computational fluid dynamics (CFD) simulation to predict annular pressure losses, cuttings concentration profiles, and cuttings velocity profiles. A combination of Wen-Yu drag force model and k-epsilon turbulence model closely predicted experimental pressure loss data from literature. The results indicated that drillpipe rotation improves the transport efficiency of small cuttings of size 0.5 mm better than larger cuttings size of 5 mm. Annular pressure losses increased with increasing drillpipe rotation but decreased with increasing cuttings size. This study is very unique as it reveals various flow patterns that may occur during drilling operation with different cuttings size and drill pipe rotation speeds. It also serves as a guide to optimize drilling hydraulics for efficient hole cleaning in extended reach wells. Copyright © 2019 Inderscience Enterprises Ltd.
IS  - 2
VL  - 21
JF  - International Journal of Oil, Gas and Coal Technology
A1  - Ofei, T.N.
A1  - Yaaqob, S.Y.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065997190&doi=10.1504%2fIJOGCT.2019.099587&partnerID=40&md5=b7d8a89e8bab10f90035685b4cd0f1da
Y1  - 2019///
ER  -