Water-based drilling fluid with cyclodextrin shale stabilizer
US-9840652-B2 · Dec 12, 2017 · US
US9670386B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9670386-B2 |
| Application number | US-201414520379-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 22, 2014 |
| Priority date | May 23, 2012 |
| Publication date | Jun 6, 2017 |
| Grant date | Jun 6, 2017 |
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Biomimetic adhesive compositions can be used in various aspects of subterranean treatment operations. Methods for treating a subterranean formation can comprise: providing an adhesive composition that comprises a first polymer comprising a plurality of monomers that comprise a phenolic moiety, a biopolymer that is crosslinkable with the first polymer, a crosslinking agent, and an oxidizing agent; introducing the adhesive composition into a subterranean formation; and forming a coacervate-bound surface in the subterranean formation by crosslinking the first polymer.
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The invention claimed is: 1. An adhesive composition consisting of: a first polymer comprising a plurality of monomers that comprise a 1,2-dihydroxybenzene moiety, the first polymer having a polymer backbone comprising 5 or fewer continuous amino acids joined in sequence by peptidic bonds; wherein the polymer backbone contains the 1,2-dihydroxybenzene moiety as a polymer side chain and is selected from the group consisting of a polyamide, a polyalkylene, a polystyrene, a polyurethane, and a copolymer thereof; a second polymer that is crosslinkable with the first polymer; wherein a ratio of the first polymer to the second polymer in the adhesive composition ranges between about 1:1 to about 1:10; a crosslinking agent; and an oxidizing agent comprising an oxidizing anion selected from the group consisting of perborate, percarbonate, chlorate, chlorite, bromate, and any combination thereof. 2. The adhesive composition of claim 1 , wherein the first polymer is internally crosslinked, crosslinked with the second polymer, or both. 3. The adhesive composition of claim 1 , wherein the crosslinking agent comprises a transition metal ion. 4. The adhesive composition of claim 1 , wherein the second polymer comprises a biopolymer selected from the group consisting of chitosan, collagen, keratin, elastin, chitin, cellulose, mucin, any derivative thereof, and any combination thereof. 5. The adhesive composition of claim 1 , wherein the first polymer comprises a copolymer of the monomers comprising the 1,2-dihydroxybenzene moiety and at least one other copolymer unit. 6. The adhesive composition of claim 5 , wherein the at least one other copolymer unit comprises a styrenic polymer unit, a vinylic polymer unit, a fluoropolymer unit, or a polymer unit comprising a monomer selected from the group consisting of hydroxyproline, dihydroxyproline, 4-hydroxyarginine, O-phosphoserine, any derivative thereof, and any combination thereof. 7. An adhesive composition consisting of: a first polymer comprising a plurality of monomers that comprise a 1,2-dihydroxybenzene moiety, the first polymer having a polymer backbone comprising 5 or fewer continuous amino acids joined in sequence by peptidic bonds; wherein the polymer backbone contains the 1,2-dihydroxybenzene moiety as a polymer side chain and is selected from the group consisting of a polyamide, a polyalkylene, a polystyrene, a polyurethane, and a copolymer thereof; a second polymer that is crosslinkable with the first polymer; a crosslinking agent; a non-crosslinkable polymer; and an oxidizing agent comprising an oxidizing anion selected from the group consisting of perborate, percarbonate, chlorate, chlorite, bromate, and any combination thereof. 8. The adhesive composition of claim 7 , wherein the first polymer is internally crosslinked, crosslinked with the second polymer, or both. 9. The adhesive composition of claim 7 , wherein the crosslinking agent comprises a transition metal ion. 10. The adhesive composition of claim 7 , wherein the second polymer comprises a biopolymer selected from the group consisting of chitosan, collagen, keratin, elastin, chitin, cellulose, mucin, any derivative thereof, and any combination thereof. 11. The adhesive composition of claim 7 , wherein the first polymer comprises a copolymer of the monomers comprising the 1,2-dihydroxybenzene moiety and at least one other copolymer unit. 12. The adhesive composition of claim 11 , wherein the at least one other copolymer unit comprises a styrenic polymer unit, a vinylic polymer unit, a fluoropolymer unit, or a polymer unit comprising a monomer selected from the group consisting of hydroxyproline, dihydroxyproline, 4-hydroxyarginine, O-phosphoserine, any derivative thereof, and any combination thereof. 13. An adhesive composition consisting of: a first polymer comprising a plurality of monomers that comprise a 1,2-dihydroxybenzene moiety, the first polymer having a polymer backbone comprising 5 or fewer continuous amino acids joined in sequence by peptidic bonds; wherein the polymer backbone contains the 1,2-dihydroxybenzene moiety as a polymer side chain and is selected from the group consisting of a polyamide, a polyalkylene, a polystyrene, a polyurethane, and a copolymer thereof; a second polymer that is crosslinkable with the first polymer; wherein a ratio of the first polymer to the second polymer in the adhesive composition ranges between about 1:1 to about 1:10; and an oxidizing agent comprising an oxidizing anion selected from the group consisting of perborate, percarbonate, chlorate, chlorite, bromate, and any combination thereof.
of natural origin, e.g. polysaccharides, cellulose (C09K8/5756 takes precedence) · CPC title
derived from leather or skin {, e.g. gelatin} · CPC title
Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof · CPC title
containing oxygen atoms {(C09J201/025 takes precedence)} · CPC title
Adhesives based on proteins; Adhesives based on derivatives thereof · CPC title
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