Reducing or stopping the uncontrolled flow of fluid such as oil from a well
View Patent ↗The uncontrolled flow of fluid from an oil or gas well may be reduced or stopped by injecting a composition including 2-cyanoacrylate ester monomer into the fluid stream. Injection of the monomer results in a rapid, perhaps instantaneous, polymerization of the monomer within the flow stream of the fluid. This polymerization results in formation of a solid plug that reduces or stops the flow of additional fluid from the well.
1. A method for reducing or stopping an uncontrolled flow of fluid from a well having a failed blowout preventer, comprising:
pumping a composition comprising a 2-cyanoacrylate ester monomer into a flow stream of fluid from a well, whereby the monomer polymerizes to form a plug that reduces or stops the uncontrolled flow of fluid from the well.
2. The method of claim 1 wherein the composition comprising 2-cyanoacrylate ester monomer is pumped into a flow stream in the blowout preventer.
3. The method of claim 1 , wherein the composition of 2-cyanoacrylate is pumped through a port formed by drilling through an annulus, the port formed below the blowout preventer.
4. The method of claim 1 , wherein the fluid comprises oil.
5. The method of claim 1 , wherein the fluid comprises natural gas.
6. The method of claim 1 , wherein the 2-cyanoacrylate ester monomer is of the formula
wherein R is selected from an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 2-10 carbons, and a cyclohexyl group, or a phenyl group.
7. The method of claim 6 , wherein the 2-cyanoacrylate ester monomer is selected from methyl 2-cyanoacrylate, ethyl 2-cyanoacrylate, propyl 2-cyanoacrylate, butyl 2-cyanoacrylate, and octyl 2-cyanoacrylate, cyclohexyl 2-cyanoacrylate, and phenyl 2-cyanoacrylate.
8. The method of claim 1 , wherein the composition comprises a pre-gelled cyanoacrylate.
9. The method of claim 1 , wherein the composition further comprises an additive for aiding in the formation of the plug.
10. The method of claim 9 , wherein the additive comprises a ceramic material.
11. The method of claim 9 , wherein the additive comprises a fiber.
12. The method of claim 9 , wherein the additive comprises particles of a solid.
13. The method of claim 12 , wherein the particles of a solid comprise a polymer.
14. The method of claim 9 , wherein the additive comprises sand.
15. The method of claim 1 , wherein the composition further comprises a polymerization inhibitor.
16. The method of claim 15 , wherein the composition of the inhibitor includes an acid chelate formed from boric acid or a derivative thereof with a selected polyhydroxy compound.
17. The method of claim 16 wherein the polyhydroxy compound comprises pyrogallol.
18. The method of claim 1 , further comprising pumping an initiator composition into the flow stream below the monomer composition.
19. The method of claim 18 where the initiator composition is comprised of an anionic initiator.
20. The method of claim 19 where the anionic initiator is selected from water, sodium acetate, sodium butyl cyanoacetate, lithium bromide, potassium hydroxide, potassium cyanide, sodium iodide, tetrabutylammonium iodide, a phosphines, an aliphatic amine, an aromatic amine, and mixtures thereof.
21. The method of claim 1 where the composition comprising a 2-cyanoacrylate ester monomer is pre-loaded into a valved manifold that is placed near the point of delivery to the blowout preventer of a well.
22. The method of claim 1 where the 2-cyanoacrylate ester monomer is pre-loaded into a valved tank that is placed on the drilling rig, or placed near the point of delivery to the blowout preventer of a well.
23. The method of claim 18 where the initiator is pre-loaded into a valved manifold that is placed near the point of delivery to the blowout preventer of a well.
24. The method of claim 18 where the initiator is pre-loaded into a valved tank that is placed on the drilling rig, or placed near the point of delivery to the blowout preventer of a well.