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50/50 oil-water ratio invert emulsion drilling mud using vegetable oil as continuous phase

Ihenacho, P, Burby, ML, Nasr, GG and Enyi, GC 2016, '50/50 oil-water ratio invert emulsion drilling mud using vegetable oil as continuous phase' , International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering, 10 (3) , pp. 239-242.

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Abstract

Formulation of a low oil-water ratio drilling mud with vegetable oil continuous phase without adversely affecting the mud rheology and stability has been a major challenge. A low oil-water ratio is beneficial in producing low fluid loss which is essential for wellbore stability. This study examined the possibility of 50/50 oilwater ratio invert emulsion drilling mud using a vegetable oil continuous phase. Jatropha oil was used as continuous phase. 12 ml of egg yolk which was separated from the albumen was added as the primary emulsifier additive. The rheological, stability and filtration properties were examined. The plastic viscosity and yield point were found to be 36cp and 17 Ib/100 ft2 respectively. The electrical stability at 48.9ºC was 353v and the 30 minutes fluid loss was 6ml. The results compared favourably with a similar formulation using 70/30 oil - water ratio giving plastic viscosity of 31cp, yield point of 17 Ib/100 ft2, electrical stability value of 480v and 12ml for the 30 minutes fluid loss. This study indicates that with a good mud composition using guided empiricism, 50/50 oil-water ratio invert emulsion drilling mud is feasible with a vegetable oil continuous phase. The choice of egg yolk as emulsifier additive is for compatibility with the vegetable oil and environmental concern. The high water content with no fluid loss additive will also minimise the cost of mud formulation.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre (SIRC)
Journal or Publication Title: International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering
Publisher: World Academy of Science, Engineering and Technology
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Funders: Funder not known
Depositing User: Dr Amir Nourian
Date Deposited: 01 Mar 2016 11:43
Last Modified: 16 Mar 2016 16:46
URI: http://usir.salford.ac.uk/id/eprint/38032

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