CA2596541A1 - Self-degrading fibers and associated methods of use and manufacture - Google Patents
Self-degrading fibers and associated methods of use and manufacture Download PDFInfo
- Publication number
- CA2596541A1 CA2596541A1 CA002596541A CA2596541A CA2596541A1 CA 2596541 A1 CA2596541 A1 CA 2596541A1 CA 002596541 A CA002596541 A CA 002596541A CA 2596541 A CA2596541 A CA 2596541A CA 2596541 A1 CA2596541 A1 CA 2596541A1
- Authority
- CA
- Canada
- Prior art keywords
- poly
- self
- degrading fibers
- subterranean formation
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/70—Compositions for forming crevices or fractures characterised by their form or by the form of their components, e.g. foams
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
- D01F6/625—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters derived from hydroxy-carboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/08—Fiber-containing well treatment fluids
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Textile Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nonwoven Fabrics (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
This invention relates to the use of degradable fibers, and more particularly, to self- degrading fibers and their associated methods of use and manufacture.
In one embodiment, the present invention provides a method of treating a portion of a subterranean formation comprising the steps of: providing a treatment fluid comprising a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid; placing the treatment fluid into a subterranean formation; and treating a portion of the subterranean formation.
In one embodiment, the present invention provides a method of treating a portion of a subterranean formation comprising the steps of: providing a treatment fluid comprising a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid; placing the treatment fluid into a subterranean formation; and treating a portion of the subterranean formation.
Claims (20)
1. A method of treating a portion of a subterranean formation comprising the steps of:
providing a treatment fluid comprising a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid;
placing the treatment fluid into a subterranean formation; and treating a portion of the subterranean formation.
providing a treatment fluid comprising a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid;
placing the treatment fluid into a subterranean formation; and treating a portion of the subterranean formation.
2. The method of claim 1 wherein at least one of the self-degrading fibers comprises a coating and/or an additive.
3. The method of claim 1 wherein at least one of the self-degrading fibers has at least one of the following: a round cross-sectional shape; an oval cross-sectional shape; a trilobal shape; a star shape; a flat shape; a rectangular shape; a closed fiber end; a diameter of about 2 microns to about 200 microns; a length of at least about 1 millimeter; an aspect ratio of greater than about 100; or a density of about 1 to about 4 g/cm3.
4. The method of claim 1 wherein the concentration of self-degrading fibers in the treatment fluid is about 0.01% to about 75% of the composition of the treatment fluid.
5. The method of claim 1 wherein the outer shell of at least one of the self-degrading fibers comprises at least one of the following: an aliphatic polyester; a poly(lactide); a poly(glycolide); a poly(.epsilon.-caprolactone); a poly(hydroxybutyrate); a polyanhydride; an aliphatic polycarbonate; a poly(orthoester); a poly(amide);
a poly(urethane); a poly(hydroxy ester ether); or a poly(phosphazene).
a poly(urethane); a poly(hydroxy ester ether); or a poly(phosphazene).
6. The method of claim 1 wherein the core liquid of at least one of the self-degrading fibers comprises at least one of the following: an alcohol, an acid, a base or an aqueous-based fluid.
7. The method of claim 1 wherein the treatment fluid is a cement composition, a fracturing fluid, or a gravel pack fluid.
8. The method of claim 1 wherein treating the subterranean formation involves a primary cementing operation, placing a permeable cement pack, placing a permeable proppant pack, or placing a gravel pack.
9. The method of claim 1 wherein at least one of the self-degrading fibers has a plurality of core liquids.
10. A method comprising:
providing a cement composition that comprises a hydraulic cement, water, and a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid;
placing the cement composition in a subterranean formation; and allowing the cement composition to set therein.
providing a cement composition that comprises a hydraulic cement, water, and a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid;
placing the cement composition in a subterranean formation; and allowing the cement composition to set therein.
11. The method of claim 10 wherein the outer shell of at least one of the self-degrading fibers comprises at least one of the following: an aliphatic polyester; a poly(lactide); a poly(glycolide); a poly(.epsilon.-caprolactone); a poly(hydroxybutyrate); a polyanhydride; an aliphatic polycarbonate; a poly(orthoester); a poly(amide);
a poly(urethane); a poly(hydroxy ester ether); or a poly(phosphazene).
a poly(urethane); a poly(hydroxy ester ether); or a poly(phosphazene).
12. The method of claim 10 wherein at least one of the self-degrading fibers has at least one of the following: a round cross-sectional shape; an oval cross-sectional shape; a trilobal shape; a star shape; a flat shape; a rectangular shape; a closed fiber end; a diameter of about 2 microns to about 200 microns; a length of at least about 1 millimeter; an aspect ratio of greater than about 100; or a density of about 1 to about 4 g/cm3.
13. The method of claim 10 wherein the core liquid of at least one of the self-degrading fibers comprises at least one of the following: an alcohol, an acid, a base or an aqueous-based fluid.
14. A method of fracturing a portion of a subterranean formation comprising:
providing a fracturing fluid composition that comprises proppant particulates and a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid;
injecting the fracturing fluid into the subterranean formation at a pressure sufficient to create or enhance a fracture in a portion therein;
allowing the proppant particulates and self-degrading fibers to conglomerate within the fracture so as to form a permeable proppant matrix therein.
providing a fracturing fluid composition that comprises proppant particulates and a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid;
injecting the fracturing fluid into the subterranean formation at a pressure sufficient to create or enhance a fracture in a portion therein;
allowing the proppant particulates and self-degrading fibers to conglomerate within the fracture so as to form a permeable proppant matrix therein.
15. The method of claim 14 wherein the fracturing fluid comprises a hydraulic cement.
16. The method of claim 14 wherein the fracturing fluid comprises a base fluid and a viscosifying agent.
17. The method of claim 14 wherein the outer shell of at least one of the self-degrading fibers comprises at least one of the following: an aliphatic polyester; a poly(lactide); a poly(glycolide); a poly(.epsilon.-caprolactone); a poly(hydroxybutyrate); a polyanhydride; an aliphatic polycarbonate; a poly(orthoester); a poly(amide);
a poly(urethane); a poly(hydroxy ester ether); or a poly(phosphazene).
a poly(urethane); a poly(hydroxy ester ether); or a poly(phosphazene).
18. A method of providing some degree of sand control to a portion of a subterranean formation penetrated by a well bore comprising:
providing a gravel pack fluid comprising gravel particulates and a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid; and placing the gravel pack fluid into the subterranean formation so that a permeable gravel pack forms adjacent to a portion of the subterranean formation.
providing a gravel pack fluid comprising gravel particulates and a plurality of self-degrading fibers, the self-degrading fibers comprising an outer shell and a core liquid; and placing the gravel pack fluid into the subterranean formation so that a permeable gravel pack forms adjacent to a portion of the subterranean formation.
19. The method of claim 18 wherein the self-degrading fibers produce an acid upon degradation that is capable of interacting with an acid soluble portion of a filter cake.
20. The method of claim 18 wherein before placing the gravel pack fluid into the subterranean formation, a perforated shroud having perforations is placed into the subterranean formation, the perforations being sealed by a temporary sealant, and the gravel pack fluid is placed between the perforated shroud and the portion of the subterranean formation.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US11/048,417 | 2005-01-31 | ||
US11/048,417 US7267170B2 (en) | 2005-01-31 | 2005-01-31 | Self-degrading fibers and associated methods of use and manufacture |
PCT/GB2006/000054 WO2006079776A1 (en) | 2005-01-31 | 2006-01-09 | Self-degrading fibers and associated methods of use and manufacture |
Publications (2)
Publication Number | Publication Date |
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CA2596541A1 true CA2596541A1 (en) | 2006-08-03 |
CA2596541C CA2596541C (en) | 2010-03-16 |
Family
ID=36370981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2596541A Expired - Fee Related CA2596541C (en) | 2005-01-31 | 2006-01-09 | Self-degrading fibers and associated methods of use and manufacture |
Country Status (3)
Country | Link |
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US (1) | US7267170B2 (en) |
CA (1) | CA2596541C (en) |
WO (1) | WO2006079776A1 (en) |
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-
2005
- 2005-01-31 US US11/048,417 patent/US7267170B2/en not_active Expired - Fee Related
-
2006
- 2006-01-09 WO PCT/GB2006/000054 patent/WO2006079776A1/en not_active Application Discontinuation
- 2006-01-09 CA CA2596541A patent/CA2596541C/en not_active Expired - Fee Related
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US7267170B2 (en) | 2007-09-11 |
US20060169449A1 (en) | 2006-08-03 |
CA2596541C (en) | 2010-03-16 |
WO2006079776A1 (en) | 2006-08-03 |
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