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:
Nov. 26, 1991
Filed:
Nov. 16, 1990
Applicant:
Inventors:
Yung N Lee, Ponca City, OK (US);
Fred R Wiggins, Ponca City, OK (US);
Assignee:
Conoco Inc., Ponca City, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F17D / ;
U.S. Cl.
CPC ...
137 13 ; 137896 ;
Abstract
Friction loss in a saline liquid flowing through a conduit is reduced by combining fresh water and a water-in-oil emulsion of a water soluble friction reducing polymer, subjecting the combined material to mixing to invert the emulsion and introducing the inverted emulsion directly into the flowing saline liquid. In one aspect the water-in-oil emulsion is combined with saline water containing a surfactant to effect inversion prior to introduction of the combination into the flowing saline liquid.