Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Patent
1995-03-13
1997-04-22
Lovering, Richard D.
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
507263, 507264, 507267, 252312, 252314, 166310, 44301, C09K 702, B01J 1300, F17D 117, C10L 132
Patent
active
056229208
ABSTRACT:
A method for forming a stable emulsion of a viscous hydrocarbon in an aqueous buffer solution includes the steps of: providing a viscous hydrocarbon containing an inactive natural surfactant and having a salt content by weight of less than or equal to about 15 ppm and having a water content by weight of less than or equal to about 0.1%; forming a solution of a buffer additive in an aqueous solution to provide a basic aqueous buffer solution, the buffer additive being operative to extract and activate the inactive natural surfactant from the viscous hydrocarbon; and mixing the viscous hydrocarbon with the aqueous buffer solution at a rate sufficient to provide an emulsion of the viscous hydrocarbon in the aqueous buffer solution, whereby the buffer additive extracts the inactive natural surfactant from the viscous hydrocarbon into the aqueous buffer solution and activates the inactive natural surfactant so as to stabilize the emulsion. According to the invention, the buffer additive is a water soluble amine. The inactive natural surfactant contained in the viscous hydrocarbon includes carboxylic acids, phenols, esters, and mixtures thereof. Bimodal emulsions, having two distinct droplet size distributions, are also formed according to the method of the present invention and have improved viscosity characteristics.
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Acevedo Socrates
Gutierrez Xiomara
Rivas Hercilio
Intevep S.A.
Lovering Richard D.
Metzmaier Daniel S.
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