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. 07, 1999
Filed:
Apr. 14, 1997
Applicant:
Inventors:
John C Newlove, Columbus, GA (US);
Cruise K Jones, Houston, TX (US);
Fati Malekahmadi, Houston, TX (US);
Assignee:
Nalco/Exxon Energy Chemicals, L.P., Sugar Land, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; E21B / ;
U.S. Cl.
CPC ...
507238 ; 507221 ; 507227 ; 507228 ; 507231 ; 507244 ; 507269 ; 507921 ; 507922 ; 166300 ; 166308 ;
Abstract
Oil degradable encapsulated breaker particles are used in fracturing operations to break hydro-carbon liquid gelled with salts of alkyl phosphate esters. The preferred breaker chemical is particulate urea coated with sulfonated EPDM.