Ecofriendly emulsifier synthesis from esterified waste vegetable oil for wellbore drilling fluids
AssigneeSaudi Arabian Oil Company
InventorsJothibasu Ramasamy, Md Amanullah
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Abstract
Ecofriendly emulsifier synthesis from esterified waste vegetable oil for wellbore drilling fluids is described. A raw material waste vegetable oil is esterified to produce a methyl ester of the raw material waste vegetable oil. A caustic soda solution is added to the methyl ester resulting in a mixture. The mixture is thermally treated. A pH of the mixture is adjusted resulting in formation of an aqueous phase and a non-aqueous phase. The aqueous phase is separated from the non-aqueous phase.
Claims11
A method of cleaving an ester group of a methyl ester of waste vegetable oil to produce an emulsifier of the waste vegetable oil, the method comprising:
- adding a caustic soda solution to the methyl ester resulting in a mixture;
- thermally treating the mixture;
- adjusting a pH of the mixture resulting in formation of an aqueous phase and a non-aqueous phase;
- and
- separating the aqueous phase from the non-aqueous phase.
A method comprising:
- cleaving an ester group of a methyl ester of waste vegetable oil to produce an emulsifier of the waste vegetable oil;
- adding a caustic soda solution to the methyl ester resulting in a mixture;
- thermally treating the mixture at substantially 60° C.;
- adjusting a pH of the mixture by adding an acid;
- forming of an aqueous phase and a non-aqueous phase in response to adding the acid;
- and
- separating the aqueous phase from the non-aqueous phase.
Dependencies are inferred from the claim text.