Sand consolidation methods
CA 2070106 A1 · Owner: Pardo, Carlos Walter · Inventors: Pardo, Carlos Walter; Surles, Billy Wayne; Fader, Philip Daniel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
SAND CONSOLIDATION METHODS, (D# 91, 011-F) ABSTRACT OF THE DISCLOSURE, Methods are provided for consolidating unconsolidated mineral grains such as sand within a subterranean oil formation to form a fluid permeable barrier which restrains the movement of sand particles when oil passes through the barrier. A quantity of an organic solvent, preferably an ester such as butyl acetate is injected into the formation as a preflush. Next a liquid, comprising a polymerizable oligomer such as furfuryl alcohol oligomer, an ester such as butyl acetate and an acid catalyst such, as toluene sulfonic acid is provided then mixed with a, noncondensable gas to form a multiphase or aerosol treating fluid and …
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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
- Filed June 1, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 1, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2014.
- 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.