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:
Sep. 12, 2017
Filed:
Jul. 30, 2013
Applicant:
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
M. J. Yanjarappa, Pune, IN;
Cecile Boyer, Lake Jackson, TX (US);
Stephen M. Hoyles, Lake Jackson, TX (US);
Michael K. Poindexter, Sugar Land, TX (US);
Assignee:
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 17/04 (2006.01); B01D 17/02 (2006.01); C02F 1/52 (2006.01); C02F 1/68 (2006.01); C09K 8/588 (2006.01); E21B 21/06 (2006.01); C02F 1/56 (2006.01); C09K 8/36 (2006.01); C10G 33/04 (2006.01); C02F 1/00 (2006.01); B01D 21/00 (2006.01); B01D 21/01 (2006.01); B03D 3/00 (2006.01); C09K 8/02 (2006.01); C09K 8/524 (2006.01); C09K 8/528 (2006.01); C09K 8/60 (2006.01); C02F 101/32 (2006.01); C02F 103/10 (2006.01);
U.S. Cl.
CPC ...
C02F 1/56 (2013.01); B01D 17/047 (2013.01); C09K 8/36 (2013.01); C10G 33/04 (2013.01); C02F 2101/32 (2013.01); C02F 2103/10 (2013.01); C09K 8/588 (2013.01); E21B 21/063 (2013.01); E21B 21/068 (2013.01);
Abstract
Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of an N-vinylpyrrolidone based cationic copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.