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:
Apr. 12, 1994
Filed:
Jul. 31, 1992
Applicant:
Inventors:
Ulysse Cartalos, Rueil Malmaison, FR;
Jacqueline Lecourtier, Rueil Malmaison, FR;
Alain Rivereau, Rueil Malmaison, FR;
Assignee:
Institut Du Petrole, Rueil Malmaison, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; C04B / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
166294 ; 106209 ; 106730 ;
Abstract
In the cementing of oil wells, gas wells, or geothermal wells, wherein, under appropriate conditions, a suitable drilling fluid is injected, then optionally a slug fluid and finally a composition comprising water, a cement, at least one viscosity-enhancing additive, optionally at least one retarding agent and optionally at least one silica characterized in that the viscosity-enhancing agent is a scleroglucan solution. It applies particularly to the high temperature cementing of wells.