Intevep, S.a.

Inievep, S.a.

Xiomara Gutiérrez

Migdalia Carrasquero

Roberto E Galiasso

Hercilio Rivas

Geoffrey McGrath

Luis R Marcano

Manuel A González

José Blanco

Francisco López-Linares

Abel Ojeda

Hercilio José Rivas Siervo

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 water-in-hydrocarbon emulsion includes a water phase, a hydrocarbon phase and a surfactant, wherein the water phase is present in an amount greater than or equal to about 5% vol. with respect to volume of the emulsion, and the water phase and the surfactant are present at a ratio by volume of the water phase to the surfactant of at least about 1. A method for preparing the emulsion is also provided.

Water in hydrocarbon emulsion useful as low emission fuel and method for forming same

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Caracas, Venezuela

Xiomara Gutiérrez