Intevep, S.a.

Luis R Marcano

Migdalia Carrasquero

Hercilio Rivas

Gustavo A Nunez

Xiomara Gutierrez

Gerardo Alonso Sanchez

Xiomara Gutiérrez

Hercilio José Rivas Siervo

Abel Ojeda

Raul Saud

José Blanco

A method for preparing a thermally stable well servicing fluid in the form of an oil-in-water (O/W) macroemulsion, a water-in-oil (W/O) macroemulsion or a water-in-oil (W/O) microemulsion at the well drilling location is provided. The servicing fluid is prepared by mixing a hydrocarbon phase, a water phase and a surfactant phase to obtain either an O/W macroemulsion, a W/O macroemulsion or a W/O microemulsion. The surfactant phase comprises a first surfactant and/or a second surfactant. The first surfactant comprises a fatty acid mixture and a hygroscopic first additive. The second surfactant comprises a C4-C6 alcohol. Whether or not an O/W macroemulsion, W/O macroemulsion or a W/O microemulsion is produced is determined by the concentration of the phases, the first surfactant, the second surfactant and the timing upon which the first additive, water phase and second surfactant are introduced to the mixture.

Process for preparing thermally stable oil-in-water and water-in-oil emulsions

A surfactant package for a water-in-hydrocarbon emulsion includes a fatty acid component; a fatty acid salt component; an alcohol component and a salt of carboxylic acid. Emulsions formed using this surfactant package are stable and have ratios of water to surfactant of at least about 3.

Surfactant package and water in hydrocarbon emulsion using same

A combustible fuel for diesel engines and a process for forming same in the form of a water in hydrocarbon emulsion wherein the mean water drop diameter is .ltoreq.4 .mu.m with a maximum diameter of .ltoreq.10 .mu.m.

Water in viscous hydrocarbon emulsion combustible fuel for diesel

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Caracas, Venezuela

Luis R Marcano