The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2015
Filed:
Jul. 25, 2008
Xiomara Gutiérrez, Caracas, VE;
Luis Marcano, Los Teques, VE;
Migdalia Carrasquero, Los Teques, VE;
Abel Ojeda, Carrizal, VE;
José Blanco, San Antonio, VE;
Hercilio José Rivas Siervo, Baruta, VE;
Xiomara Gutiérrez, Caracas, VE;
Luis Marcano, Los Teques, VE;
Migdalia Carrasquero, Los Teques, VE;
Abel Ojeda, Carrizal, VE;
José Blanco, San Antonio, VE;
Hercilio José Rivas Siervo, Baruta, VE;
Intevep, S.A., Caracas, VE;
Abstract
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.