Self-diverting resin systems for sand consolidation
CA 2407986 A1 · Owner: Schlumberger Technology Corporation · Inventors: Crawshaw, John P.; Ayoub, Joseph A.; Way, Paul W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herein is described a fluid that is useful in consolidating a formation without the use of a gravel pack and screen. In particular the fluid is , useful in consolidating heterogeneous formations where the permeability is not uniform over the total formation thickness e.g. a formation having at least a , first layer and a second layer wherein the permeability of the first layer is greater than that of the second layer. The fluid comprises at least one of a resin, a curing agent, and a surfactant wherein the fluid is self-diverting. , Optionally a catalyst or other additives, such as an oil wetting agent can , be used. Fluids of the present invention are self-diverting i.e. in a , …
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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 April 23, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2023.
- 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.