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:
Jul. 17, 2007
Filed:
Nov. 19, 2001
Hans Kristian Kotlar, Stavanger, NO;
Olav Martin Selle, Stavanger, NO;
Oddvar Arnfinn Aune, Stavanger, NO;
Lars Kilaas, Stavanger, NO;
Anne Dalager Dyrli, Stavanger, NO;
Hans Kristian Kotlar, Stavanger, NO;
Olav Martin Selle, Stavanger, NO;
Oddvar Arnfinn Aune, Stavanger, NO;
Lars Kilaas, Stavanger, NO;
Anne Dalager Dyrli, Stavanger, NO;
Statoil ASA, Stravanger, NO;
Abstract
A method for the treatment of a hydrocarbon well comprising administering down the well polymeric particles impregnated with a well treatment chemical or precursor or generator thereof. The particles have a pore volume of at least 20%, and are prepared by a process which comprises preparing an aqueous dispersion of polymer particles containing from 0.05 to 10 times by volume, based on the polymer, of one or more specific first material(s) adding a partly water-soluble second material having a water-solubility of at least ten times that of first material(s) under conditions which prevent or hinder transport of first material(s) through the aqueous phase, whereby second material diffuses into the polymer particles swelled with first material(s) and increases the volume of said particles by from 20 to 1000 times, based on the polymer.