TY  - JOUR
Y1  - 2016///
A1  - Jassim, L.
A1  - Yunus, R.
A1  - Rashid, U.
A1  - Rashid, S.A.
A1  - Salleh, M.A.
A1  - Irawan, S.
A1  - Ghaemi, F.
JF  - Chemical Engineering Communications
N2  - A stable ester was synthesized to overcome the ester hydrolysis problem during the drilling of oil or gas wells using a conventional ester-based drilling fluid. The thermal and hydrolytic stability of the produced ester was high owing to the transesterification method employed in this study. The reaction was performed using 2-ethylhexanol and methyl laureate esters in the presence of sodium methoxide as a catalyst. In order to obtain the optimum synthesis conditions, a response surface methodology (RSM) was appraised based on the central composite design (CCD). The optimum conditions were determined as follows: 0.6 wt. catalyst, 70°C reaction temperature, 1:1.5 molar ratio, and 11.5 min of reaction time. The results of 77 wt. 2-ethylhexyl ester (2-EH) illustrated a high agreement between the experimental and RSM models. The reaction product contained 77 wt. 2-EH and 23 2-ethylhexanol. The kinematic viscosity was 5mm2/s at 40°C and 1.5mm2/sec at 100°C; the specific gravity was 0.854, flash point was 170°C, and pour point was -7°C. The produced product showed similar properties to the available commercial product. However, it was observed that the mud formulation using the synthesized base oil had superior rheological properties at 121°C. © Taylor & Francis Group, LLC.
SN  - 00986445
KW  - Catalysts; Drilling fluids; Esters; Oil well drilling; Rheology; Surface properties; Transesterification
KW  -  Central composite designs; Commercial products; Hydrolytic stability; Optimum conditions; Reaction temperature; Response surface methodology; Rheological property; Trans-esterification methods
KW  -  Well drilling
SP  - 463
IS  - 4
TI  - Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation
PB  - Taylor and Francis Ltd.
AV  - none
N1  - cited By 11
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956924579&doi=10.1080%2f00986445.2015.1023300&partnerID=40&md5=15122fd93f187be2dfb19c56aa1fe24e
ID  - scholars7985
EP  - 470
VL  - 203
ER  -