Methods of delivering material downhole
A package and methods for treating a wellbore using the same. In one embodiment, the method comprises servicing a wellbore in contact with a subterranean formation by placing a material in the wellbore, wherein the material is disposed within a closed container. The material is suitable for use in a wellbore and is capable of plugging a flow pathway. The method further comprises releasing the material from the container. In an embodiment, the material is a swelling agent, which may plug a permeable zone.
1. A method of servicing a wellbore in contact with a subterranean formation, comprising: placing a closed container in the wellbore, wherein the closed container comprises a material effective to plugging a flow pathway in the wellbore; and releasing the material from the container, wherein the material comprises a swelling agent, wherein the swelling agent comprises a superabsorber, and wherein the superabsorber comprises a dehydrated, crystalline polymer.
2. The method of claim 1 , wherein the material further comprises a silicate solution disposed within the container.
3. The method of claim 1 , wherein the closed container provides for dry transport of the material in the wellbore.
4. The method of claim 1 , further comprising a sealing agent, a weighting material, or combinations thereof disposed within the container.
5. The method of claim 1 , wherein the container is porous, semi-porous, osmotically permeable, osmotically semi-permeable, or impermeable.
6. The method of claim 1 , wherein the container comprises a polymer.
7. The method of claim 6 , wherein the polymer comprises a polyethylene, a polypropylene, a polyvinylchloride, a polyvinylidenechloride, an ethylene-vinylacetate copolymer, a poly ether, a poly ketone, a styrene-butadiene based latex, or combinations thereof.
8. The method of claim 7 , wherein releasing the material comprises dissolving at least a portion of the container.
9. The method of claim 6 , wherein the polymer comprises a water soluble or water degradable polymer.
10. The method of claim 9 , wherein the water soluble or water degradable polymer comprises a polyvinyl alcohol, a polyvinyl acetate, a hydroxyethyl cellulose, a carboxymethyl cellulose, a sodium carboxymethyl hydroxyethyl cellulose, a methyl hydroxy propyl cellulose, a derivative of polyethylene glycol, a starch, a cellulose triester, a polyethylene oxide, a polyester, or combinations thereof.
11. The method of claim 10 , wherein releasing the material comprises dissolving at least a portion of the container and wherein the superabsorber's physical size increases by about 10 to about 800 times when released from the container.
12. The method of claim 1 , wherein releasing the material comprises dissolving at least a portion of the container, puncturing the container, bursting the container with pressure in the wellbore, bursting the container by swelling the material, or combinations thereof.
13. The method of claim 1 , wherein the superabsorber's physical size increases by about 10 to about 800 times when released from the container.
14. The method of claim 1 , wherein the superabsorber has a particle size of less than or equal to about 14 millimeters.
15. The method of claim 1 , wherein the container is osmotically permeable, or osmotically semi-permeable and wherein the container comprises a pig membrane, a cellulose acetate, a cellulose triacetate, a polyamide, a polyamide resin, a polyimide resin, a polyether sulfone, a polysulfone, a polyphenyl sulfone, a polyvinylidene fluoride, or combinations thereof.
16. The method of claim 15 , wherein releasing the material comprises bursting the container by swelling the material.
17. The method of claim 1 , wherein placing the container comprises lowering the container into the wellbore by a tether and cutting the tether.
18. The method of claim 1 , wherein the container comprises a thickness of from about 2 ply to about 10 ply.
19. The method of claim 1 , wherein placing the container comprises dropping the container through the drill string.
20. A method of servicing a wellbore in contact with a subterranean formation, comprising: placing a closed container in the wellbore, wherein the closed container comprises a material effective to plugging a flow pathway in the wellbore; and releasing the material from the container, wherein the container comprises a pig membrane, a cellulose acetate, a cellulose triacetate, a polyamide, a polyamide resin, a polyimide resin, a polyether sulfone, a polysulfone, a polyphenyl sulfone, a polyvinylidene fluoride, or combinations thereof.
21. The method of claim 20 , wherein the material comprises crosslinked polyacrylamide; crosslinked polyacrylate; crosslinked hydrolyzed polyacrylonitrile; salts of carboxyalkyl starch; salts of carboxyalkyl cellulose; salts of crosslinked carboxyalkyl polysaccharide; crosslinked copolymers of acrylamide and acrylate monomers; starch grafted with acrylonitrile and acrylate monomers; crosslinked polymers of two or more of allylsulfonate, 2-acrylamido-2-methyl-1-propanesulfonic acid, 3-allyloxy-2-hydroxy-1-propane-sulfonic acid, acrylamide, and acrylic acid monomers; or combinations thereof.
22. The method of claim 20 , wherein the material's physical size increases by about 10 to about 800 times when released from the container.
23. A method of servicing a wellbore in contact with a subterranean formation, comprising: placing a closed container in the wellbore, wherein the closed container comprises a material effective to plugging a flow pathway in the wellbore; and releasing the material from the container, wherein the material comprises a swelling agent, wherein the swelling agent comprises a superabsorber, and wherein placing the container comprises lowering the container into the wellbore by a tether and cutting the tether.
24. The method of claim 23 , wherein the superabsorber comprises at least one sodium acrylate-based polymer having a three dimensional, network-like molecular structure.
25. The method of claim 23 , wherein the superabsorber comprises crosslinked polyacrylamide; crosslinked polyacrylate; crosslinked hydrolyzed polyacrylonitrile; salts of carboxyalkyl starch; salts of carboxyalkyl cellulose; salts of crosslinked carboxyalkyl polysaccharide; crosslinked copolymers of acrylamide and acrylate monomers; starch grafted with acrylonitrile and acrylate monomers; crosslinked polymers of two or more of allylsulfonate, 2-acrylamido-2-methyl-1-propanesulfonic acid, 3-allyloxy-2-hydroxy-1-propane-sulfonic acid, acrylamide, and acrylic acid monomers; or combinations thereof.
26. The method of claim 23 , wherein the superabsorber's physical size increases by about 10 to about 800 times when released from the container.
27. A package for plugging a flow pathway in a wellbore, comprising: a swelling agent disposed within a closed container, wherein the swelling agent comprises a superabsorber, wherein the superabsorber comprises a dehydrated, crystalline polymer.
28. The package of claim 27 , further comprising a silicate solution disposed within the container.
29. The package of claim 27 , further comprising a sealing agent, a weighting material, or combinations thereof disposed within the container.
30. The package of claim 27 , wherein the container is porous, semi-porous, osmotically permeable, osmotically semi-permeable, or impermeable.
31. The package of claim 27 , wherein the container comprises a polymer.
32. The package of claim 31 , wherein the polymer comprises a water soluble or water degradable polymer.
33. The package of claim 32 , wherein the water soluble or water degradable polymer comprises a polyvinyl alcohol, a polyvinyl acetate, a hydroxyethyl cellulose, a carboxymethyl cellulose, a sodium carboxymethyl hydroxyethyl cellulose, a methyl hydroxy propyl cellulose, a derivative of polyethylene glycol, a starch, a cellulose triester, a polyethylene oxide, a polyester, or combinations thereof.
34. The package of claim 31 , wherein the polymer comprises a polyethylene, a polypropylene, a polyvinylchloride, a polyvinylidenechloride, an ethylene-vinylacetate copolymer, a poly ether, a poly ketone, a styrene-butadiene based latex, or combinations thereof.
35. The package of claim 27 , wherein the superabsorber has a particle size of less than or equal to about 14 millimeters.
36. The package of claim 27 , wherein the container is osmotically permeable, or osmotically semi-permeable and wherein the container comprises a pig membrane, a cellulose acetate, a cellulose triacetate, a polyamide, a polyamide resin, a polyimide resin, a polyether sulfone, a polysulfone, a polyphenyl sulfone, a polyvinylidene fluoride, or combinations thereof.
37. A method of servicing a wellbore in contact with a subterranean formation, comprising: placing a closed container in the wellbore, wherein the closed container comprises a material effective to plugging a flow pathway in the wellbore; and releasing the material from the container, wherein the material comprises a swelling agent, wherein the swelling agent comprises a superabsorber, wherein the container comprises a water soluble or water degradable polymer, wherein the superabsorber comprises at least one sodium acrylate-based polymer having a three dimensional, network-like molecular structure, and wherein placing the container comprises lowering the container into the wellbore by a tether and cutting the tether.
38. The method of claim 37 , wherein the water soluble or water degradable polymer comprises a polyvinyl alcohol, a polyvinyl acetate, a hydroxyethyl cellulose, a carboxymethyl cellulose, a sodium carboxymethyl hydroxyethyl cellulose, a methyl hydroxy propyl cellulose, a derivative of polyethylene glycol, a starch, a cellulose triester, a polyethylene oxide, a polyester, or combinations thereof.
39. The method of claim 38 , wherein releasing the material comprises dissolving at least a portion of the container and wherein the superabsorber's physical size increases by about 10 to about 800 times when released from the container.
40. The method of claim 37 , wherein placing the container comprises lowering the container into the wellbore by a tether and cutting the tether.
41. A method of servicing a wellbore in contact with a subterranean formation, comprising: placing a closed container in the wellbore, wherein the closed container comprises a material effective to plugging a flow pathway in the wellbore; and releasing the material from the container, wherein the material comprises a swelling agent, wherein the swelling agent comprises a superabsorber, wherein the container comprises a water soluble or water degradable polymer, wherein the superabsorber comprises crosslinked polyacrylamide; crosslinked polyacrylate; crosslinked hydrolyzed polyacrylonitrile; salts of carboxyalkyl starch; salts of carboxyalkyl cellulose; salts of crosslinked carboxyalkyl polysaccharide; crosslinked copolymers of acrylamide and acrylate monomers; starch grafted with acrylonitrile and acrylate monomers; crosslinked polymers of two or more of allylsulfonate, 2-acrylamido-2-methyl-1-propanesulfonic acid, 3-allyloxy-2-hydroxy-1-propane-sulfonic acid, acrylamide, and acrylic acid monomers; or combinations thereof, and wherein placing the container comprises lowering the container into the wellbore by a tether and cutting the tether.