TY - JOUR
T1 - Effects of tribological properties of water-based drilling fluids on buckling and lock-up length of coiled tubing in drilling operations
AU - Abdo, J.
AU - Al-Shabibi, A.
AU - Al-Sharji, H.
N1 - Funding Information:
The authors gratefully acknowledge the financial support of Petroleum Development Oman (PDO) . The authors are also thankful to the technology team at PDO for their continuous help and support.
Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.
PY - 2015/2
Y1 - 2015/2
N2 - This study evaluates the performance of three lubricants on reducing friction between wellbore and coiled tubing (CT) and hence improving axial force transfer, reducing buckling, and enhances the limited reach of CT. The lubricants were evaluated using water-based drilling fluids composed of lubricants of different concentrations. Experiments were conducted in a lubricity tester and by using an in-house experimental setup that imitates the wellbore being drilled in the presence of drilling fluids. Results showed that reducing COF does not change CT buckling shape or mode, but it alters the initiation and transition between buckling modes and increases lock-up length. Effects of increasing lubricants percentages on mud properties were also examined. They showed positive impact compared to tests conducted without lubricants.
AB - This study evaluates the performance of three lubricants on reducing friction between wellbore and coiled tubing (CT) and hence improving axial force transfer, reducing buckling, and enhances the limited reach of CT. The lubricants were evaluated using water-based drilling fluids composed of lubricants of different concentrations. Experiments were conducted in a lubricity tester and by using an in-house experimental setup that imitates the wellbore being drilled in the presence of drilling fluids. Results showed that reducing COF does not change CT buckling shape or mode, but it alters the initiation and transition between buckling modes and increases lock-up length. Effects of increasing lubricants percentages on mud properties were also examined. They showed positive impact compared to tests conducted without lubricants.
KW - Coiled tubing buckling and lock-up conditions
KW - Lubricants
KW - Lubricity index
KW - Water-based drilling fluids
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U2 - 10.1016/j.triboint.2014.01.028
DO - 10.1016/j.triboint.2014.01.028
M3 - Article
AN - SCOPUS:84918825516
VL - 82
SP - 493
EP - 503
JO - Tribology International
JF - Tribology International
SN - 0301-679X
IS - PB
ER -