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.

Date of Patent:
Nov. 30, 2004

Filed:

May. 15, 2002
Applicant:
Inventors:

Ron Bouwmeester, Oude Wetering, NL;

Cornelis Wouter Botermans, Utrecht, NL;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 4/322 ; E21B 3/3138 ;
U.S. Cl.
CPC ...
E21B 4/322 ; E21B 3/3138 ;
Abstract

Methods of treating subterranean zones penetrated by well bores wherein the static temperatures of the zones are as high as 400° F. and greater include using aqueous treating fluids comprised of an aqueous liquid containing one or more inorganic monovalent salts, multivalent salts or both in an amount no greater than about 5% by weight of the aqueous liquid and one or more specific synthetic hectorite clay gelling and thixotropy imparting agents.


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