Claims
- 1. A method of treating metal surfaces of drilling equipment in a well comprising the steps of injecting into the well an anti-corrosion system comprising an epoxy resin in a first aromatic hydrocarbon dispersant, and a curing agent for the epoxy resin in a second aromatic hydrocarbon dispersant and selected from the group consisting of the alkoxylated amines and the imidazolines and mixtures thereof, said resin and curing agent reacting to give a corrosion-resistant coating for said metal surfaces.
- 2. The method of claim 1, said curing agent being an alkoxylated tallow amine having from about 2-15 moles of alkoxylate per mole of tallow amine.
- 3. The method of claim 2, said curing agent having from about 3-10 moles of alkoxylate per mole of tallow amine.
- 4. The method of claim 2, said curing agent being an ethoxylated tallow amine.
- 5. The method of claim 2, said curing agent being an alkoxylated tallow diamine.
- 6. The method of claim 1, the ratio of said curing agent to said epoxy being from about 1-4 parts by weight curing agent for each part by weight epoxy.
- 7. The method of claim 1, said curing agent being an alkoxylated amine, said epoxy resin and curing agent being premixed prior to use thereof.
- 8. The method of claim 1, said epoxy resin and curing agent being mixed at the site of said well immediately prior to said injection thereof.
- 9. The method of claim 1, said first and second dispersants being respectively selected from the group consisting of benzene, xylene, toluene and heavy aromatic naphtha and mixtures thereof.
- 10. The method of claim 1, said epoxy being present at a level of from about 10-50% by volume in said first dispersant.
- 11. The method of claim 1, said curing agent being present at a level of from about 10-50% by volume in said second dispersant.
- 12. The method of claim 1, including the step of injecting said system by separately injecting said epoxy and said curing agent.
Parent Case Info
This is a divisional of application Ser. No. 08/919,943 filed Aug. 29, 1997.
US Referenced Citations (3)
Divisions (1)
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Number |
Date |
Country |
Parent |
919943 |
Aug 1997 |
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