Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation
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 rea...
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| Format: | Article |
| Language: | English |
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Taylor & Francis
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/29202/ http://psasir.upm.edu.my/id/eprint/29202/1/e.pdf |
| _version_ | 1848846333947936768 |
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| author | Ismail Jassim, Lina Yunus, Robiah Rashid, Umer Abdul Rashid, Suraya Mohd Salleh, Mohamad Amran Irawan, Sonny Ghaemi, Ferial |
| author_facet | Ismail Jassim, Lina Yunus, Robiah Rashid, Umer Abdul Rashid, Suraya Mohd Salleh, Mohamad Amran Irawan, Sonny Ghaemi, Ferial |
| author_sort | Ismail Jassim, Lina |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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 5 mm2/s at 40°C and 1.5 mm2/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. |
| first_indexed | 2025-11-15T09:01:03Z |
| format | Article |
| id | upm-29202 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:01:03Z |
| publishDate | 2016 |
| publisher | Taylor & Francis |
| recordtype | eprints |
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| spelling | upm-292022016-06-20T07:03:39Z http://psasir.upm.edu.my/id/eprint/29202/ Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation Ismail Jassim, Lina Yunus, Robiah Rashid, Umer Abdul Rashid, Suraya Mohd Salleh, Mohamad Amran Irawan, Sonny Ghaemi, Ferial 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 5 mm2/s at 40°C and 1.5 mm2/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 2016 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/29202/1/e.pdf Ismail Jassim, Lina and Yunus, Robiah and Rashid, Umer and Abdul Rashid, Suraya and Mohd Salleh, Mohamad Amran and Irawan, Sonny and Ghaemi, Ferial (2016) Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation. Chemical Engineering Communications, 203 (4). pp. 463-470. ISSN 0098-6445; ESSN: 1563-5201 http://www.tandfonline.com/doi/abs/10.1080/00986445.2015.1023300 10.1080/00986445.2015.1023300 |
| spellingShingle | Ismail Jassim, Lina Yunus, Robiah Rashid, Umer Abdul Rashid, Suraya Mohd Salleh, Mohamad Amran Irawan, Sonny Ghaemi, Ferial Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation |
| title | Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation |
| title_full | Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation |
| title_fullStr | Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation |
| title_full_unstemmed | Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation |
| title_short | Synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation |
| title_sort | synthesis and optimization of 2-ethylhexyl ester as base oil for drilling fluid formulation |
| url | http://psasir.upm.edu.my/id/eprint/29202/ http://psasir.upm.edu.my/id/eprint/29202/ http://psasir.upm.edu.my/id/eprint/29202/ http://psasir.upm.edu.my/id/eprint/29202/1/e.pdf |