Subterranean formation treating with delayed crosslinking gel fluids
CA 1301446 C · Owner: Haliburton Company · Inventors: Harris, Phillip C.; Sandy, Joe M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating a subterranean formation with delayed crosslinking gel fluids is provided. An aqueous gel is first prepared by admixing an organic carboxylated gelling agent with an aqueous liquid. A buffer is combined with the aqueous gel in an amount sufficient to result in and maintain the pH thereof at a level of about 5 or above at ambient temperature. A zirconium IV-containing crosslinking compound is combined with the gel and the mixture is introduced into a subterranean formation whereby the mixture is heated and caused to crosslink.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.