eprintid: 7985
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/79/85
datestamp: 2023-11-09 16:19:50
lastmod: 2023-11-09 16:19:50
status_changed: 2023-11-09 16:10:53
type: article
metadata_visibility: show
creators_name: Jassim, L.
creators_name: Yunus, R.
creators_name: Rashid, U.
creators_name: Rashid, S.A.
creators_name: Salleh, M.A.
creators_name: Irawan, S.
creators_name: Ghaemi, F.
title: Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation
ispublished: pub
keywords: Catalysts; Drilling fluids; Esters; Oil well drilling; Rheology; Surface properties; Transesterification, Central composite designs; Commercial products; Hydrolytic stability; Optimum conditions; Reaction temperature; Response surface methodology; Rheological property; Trans-esterification methods, Well drilling
note: cited By 11
abstract: 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.
date: 2016
publisher: Taylor and Francis Ltd.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956924579&doi=10.1080%2f00986445.2015.1023300&partnerID=40&md5=15122fd93f187be2dfb19c56aa1fe24e
id_number: 10.1080/00986445.2015.1023300
full_text_status: none
publication: Chemical Engineering Communications
volume: 203
number: 4
pagerange: 463-470
refereed: TRUE
issn: 00986445
citation:   Jassim, L. and Yunus, R. and Rashid, U. and Rashid, S.A. and Salleh, M.A. and Irawan, S. and Ghaemi, F.  (2016) Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation.  Chemical Engineering Communications, 203 (4).  pp. 463-470.  ISSN 00986445