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:
Aug. 30, 2005
Filed:
Aug. 30, 2002
Bach Dao, Nieuw-vennep, NL;
Ewout Biezen, Leiderdorp, NL;
Jan Pieter Vijn, Leiderdorp, NL;
Thien Pham, Zoetermeer, NL;
Bach Dao, Nieuw-vennep, NL;
Ewout Biezen, Leiderdorp, NL;
Jan Pieter Vijn, Leiderdorp, NL;
Thien Pham, Zoetermeer, NL;
Halliburton Energy Services, Inc., Duncan, OK (US);
Abstract
The present invention provides a cement composition and a process for using the cement composition to inhibit gas migration from a subterranean zone into the cement. The process comprises displacing a gelling additive, preferably comprised within a cement composition, into a well bore such that the gelling additive passes into the subterranean zone, and allowing the gelling additive to form a crosslinked gel in the subterranean zone to inhibit gas migration from the subterranean zone. The crosslinked gel acts as a barrier to gas in the subterranean zone and thereby inhibits the gas from passing into the cement and forming flow channels therein before the cement can set.