CN115197684A - Preparation method of composite plugging agent based on pulping prehydrolysis liquid - Google Patents
Preparation method of composite plugging agent based on pulping prehydrolysis liquid Download PDFInfo
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- CN115197684A CN115197684A CN202210859996.6A CN202210859996A CN115197684A CN 115197684 A CN115197684 A CN 115197684A CN 202210859996 A CN202210859996 A CN 202210859996A CN 115197684 A CN115197684 A CN 115197684A
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- pulping
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- prehydrolysis liquid
- plugging agent
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- 239000007788 liquid Substances 0.000 title claims abstract description 49
- 238000004537 pulping Methods 0.000 title claims abstract description 33
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 235000015110 jellies Nutrition 0.000 claims abstract description 13
- 239000008274 jelly Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 39
- 229920002401 polyacrylamide Polymers 0.000 claims description 20
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000003431 cross linking reagent Substances 0.000 claims description 14
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 11
- 229920000642 polymer Polymers 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 claims description 6
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 claims description 6
- 230000033558 biomineral tissue development Effects 0.000 claims description 6
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 claims description 4
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002907 Guar gum Polymers 0.000 claims description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 4
- DLRVVLDZNNYCBX-UHFFFAOYSA-N Polydextrose Polymers OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(O)O1 DLRVVLDZNNYCBX-UHFFFAOYSA-N 0.000 claims description 4
- 229920002310 Welan gum Polymers 0.000 claims description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 4
- PYMYPHUHKUWMLA-WDCZJNDASA-N arabinose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)C=O PYMYPHUHKUWMLA-WDCZJNDASA-N 0.000 claims description 4
- 229910021538 borax Inorganic materials 0.000 claims description 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000665 guar gum Substances 0.000 claims description 4
- 235000010417 guar gum Nutrition 0.000 claims description 4
- 229960002154 guar gum Drugs 0.000 claims description 4
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 4
- 239000004328 sodium tetraborate Substances 0.000 claims description 4
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- 229920001285 xanthan gum Polymers 0.000 claims description 4
- 235000010493 xanthan gum Nutrition 0.000 claims description 4
- 239000000230 xanthan gum Substances 0.000 claims description 4
- 229940082509 xanthan gum Drugs 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 229910001424 calcium ion Inorganic materials 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 229920000875 Dissolving pulp Polymers 0.000 claims description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 2
- 241001397809 Hakea leucoptera Species 0.000 claims description 2
- 229920002488 Hemicellulose Polymers 0.000 claims description 2
- 244000082204 Phyllostachys viridis Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 229920001100 Polydextrose Polymers 0.000 claims description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- 230000009471 action Effects 0.000 claims description 2
- 235000011037 adipic acid Nutrition 0.000 claims description 2
- 239000001361 adipic acid Substances 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000003623 enhancer Substances 0.000 claims description 2
- SWRGUMCEJHQWEE-UHFFFAOYSA-N ethanedihydrazide Chemical compound NNC(=O)C(=O)NN SWRGUMCEJHQWEE-UHFFFAOYSA-N 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 claims description 2
- 230000016615 flocculation Effects 0.000 claims description 2
- 239000008103 glucose Substances 0.000 claims description 2
- 229940015043 glyoxal Drugs 0.000 claims description 2
- 238000005374 membrane filtration Methods 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims description 2
- 235000013856 polydextrose Nutrition 0.000 claims description 2
- 239000001259 polydextrose Substances 0.000 claims description 2
- 229940035035 polydextrose Drugs 0.000 claims description 2
- 229940068984 polyvinyl alcohol Drugs 0.000 claims description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 2
- 235000010265 sodium sulphite Nutrition 0.000 claims description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 2
- UGTZMIPZNRIWHX-UHFFFAOYSA-K sodium trimetaphosphate Chemical compound [Na+].[Na+].[Na+].[O-]P1(=O)OP([O-])(=O)OP([O-])(=O)O1 UGTZMIPZNRIWHX-UHFFFAOYSA-K 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 229920001221 xylan Polymers 0.000 claims description 2
- 150000004823 xylans Chemical class 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000008014 freezing Effects 0.000 abstract description 5
- 238000007710 freezing Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 239000000499 gel Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 10
- 230000032683 aging Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000005457 optimization Methods 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000012744 reinforcing agent Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- UMHJEEQLYBKSAN-UHFFFAOYSA-N Adipaldehyde Chemical compound O=CCCCCC=O UMHJEEQLYBKSAN-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000011246 composite particle Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 150000002772 monosaccharides Chemical class 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 150000004804 polysaccharides Chemical class 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Images
Classifications
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method of a composite plugging agent based on pulping prehydrolysis liquid, which relates to a composite plugging agent. The product prepared by the invention has the characteristics of simple use, environmental protection, adjustable freezing time and strength of the formed jelly, good temperature resistance and the like.
Description
Technical Field
The invention relates to a composite plugging agent, in particular to a preparation method of a composite plugging agent based on pulping prehydrolysis liquid.
Background
At present, most oil fields in China adopt a water injection development mode, stratum heterogeneity is intensified along with the fact that the oil fields enter middle and later development stages, many oil fields enter high water-cut periods, oil wells are seriously watered out, and oil field yield is seriously influenced, so that water control, oil stabilization and recovery ratio improvement become main challenges of the oil fields in China at present. The gel type plugging agent has wide application space in the field of profile control and water shutoff by controllable gel forming time and adjustable gel forming strength, and is widely applied to oil fields due to the characteristics of high efficiency (compared with a cement plugging agent), low cost (compared with a resin plugging agent) and the like. For example, the Chinese patent specification publication No. CN86108877 discloses a zirconium gel plugging agent, which consists of gelling agent Polyacrylamide (PAM) or Methylene Polyacrylamide (MPAM) and a cross-linking agent inorganic zirconium compound, and can be used for selective water plugging of oil wells; but also can be used for a water injection well to adjust the water absorption profile. The composite material has the advantages of good thermal stability, high water plugging rate, strong adsorbability, water scouring resistance, long validity period and low cost.
When the current oil field environment tends to high temperature and high salt, the conventional gel system has poor stability and is easy to degrade, so that the profile control and water plugging effect of the gel type plugging agent is poor. The Chinese patent of publication No. CN108300440A provides a nano-graphite emulsion reinforced body jelly system, a composition and a preparation method thereof, the composition contains a polymer matrix, a resin cross-linking agent, a coagulant and nano-graphite emulsion, specific components in the composition for jelly dispersoid have good compatibility, the high-strength body jelly system can be formed within 3-6 hours at 85-95 ℃, and the obtained jelly dispersoid has higher temperature resistance and salt resistance. The Chinese invention patent with publication number CN103232839A provides a plugging agent for water shutoff and profile control of a high-temperature high-salt oil reservoir, wherein the main agent of the plugging agent is sulfonated tannin extract or sodium humate; the cross-linking agent is the combination of aldehyde cross-linking agent and phenol cross-linking agent, the stabilizing agent is water glass and polyacrylamide, and the cross-linking agent is used for water plugging of oil layer with 90-150 deg.C and mineralization degree greater than 2.0 x 105mg/L, the gel forming time is 5-28 hr, the strength of formed jelly is 0.060-0.085MPa, and the integrity of the plugging agent is good. The Chinese patent publication No. CN102925123A provides a preparation method of a composite particle type temperature-resistant and salt-resistant chemical plugging agent colloid, which consists of thermosetting resin, an inorganic reinforcing agent and a suspending agent, and has the advantages of high plugging rate, high plugging strength, scouring resistance, good long-term stability and excellent salt resistance.
The system improves the strength of the jelly glue and the temperature and salt resistance, the added reinforcing agents are mostly nanoparticles such as nano graphite, the reinforcing agents are generally expensive, are not easy to degrade and are not suitable for large-scale use, the gel forming time is short, the deep part of the deep oil reservoir is difficult to inject, and the water plugging effect is limited. The other is inorganic reinforcing agent with low cost, such as silicate, which reacts with calcium and magnesium ions in formation water to generate silicate gel or precipitate to block high-seepage channels. Therefore, the research and development of the reinforcing agent which is green, pollution-free, low in price, wide in source and capable of improving the high temperature resistance and high salt resistance of the plugging agent are of great significance.
Disclosure of Invention
The invention aims to solve the problems and provides a preparation method of a composite plugging agent based on pulping prehydrolysis liquid, so that the prepared product has the characteristics of simplicity in use, environmental friendliness, adjustable freezing time and strength of formed jelly, good temperature resistance and the like.
In order to realize the purpose, the invention adopts the technical scheme that: a preparation method of a composite plugging agent based on pulping prehydrolysis liquid uses the pulping prehydrolysis liquid as an enhancer, and under the action of a cross-linking agent, the pulping prehydrolysis liquid and a high-molecular polymer form a multi-cross-linked jelly body at a certain temperature, and the obtained multi-cross-linked jelly system has good temperature resistance, salt resistance and strength stability.
As a further optimization of the invention, the pulping prehydrolysis liquid is a liquid generated by pretreating wood chips by dilute alkali and hot steam in the process of producing dissolving pulp in the pulping and papermaking industry, and the wood chips are one or a mixture of more of needle wood chips, broad leaf wood chips and bamboo chip raw materials.
As a further optimization of the invention, the pulping prehydrolysis liquid is obtained by concentrating supernatant obtained by flocculation and membrane filtration, the mass fraction is controlled to be 0.5-15%, and the main component is hemicellulose consisting of xylan or xylose, arabinose or arabinose, polydextrose or glucose.
As a further optimization of the invention, the concentration of the pulping prehydrolysis liquid is controlled to be 0.5-5%.
As a further optimization of the invention, the high molecular polymer is one or a compound of more of polyacrylamide with a molecular weight of 500-2000 ten thousand, a modifier thereof, polyvinyl alcohol, guar gum, xanthan gum, welan gum and welan gum.
As a further optimization of the invention, the concentration of the high molecular polymer is controlled to be 0.1-5%.
As a further optimization of the invention, the cross-linking agent is one or more of an active phenolic cross-linking agent, resorcinol, hydroquinone, glyoxal, glutaraldehyde, sodium hexametaphosphate, sodium trimetaphosphate, sodium tripolyphosphate, phosphorus oxychloride, adipic acid, oxalyl dihydrazide, borax and boric acid.
As a further optimization of the invention, the concentration of the cross-linking agent is controlled to be 0.01-3%.
As a further optimization of the invention, the stabilizer is one or a combination of more of thiourea, sodium thiosulfate, sodium bisulfite or sodium sulfite.
As a further optimization of the invention, the temperature for forming the colloid is controlled to be 70-130 ℃, and the plugging environment is that the mineralization degree of the stratum is 0-100000mg/L, wherein the content of calcium and magnesium ions is 0-20000mg/L.
The invention has the beneficial effects that: the invention provides a preparation method of a composite plugging agent based on pulping prehydrolysis liquid, so that the prepared product has the characteristics of simplicity in use, environmental friendliness, adjustable freezing time and strength of formed jelly, good temperature resistance and the like.
1. In the preparation method, the sources of the components are wide, the cost is low, and the prepared composite plugging agent has the advantages of stable effect, convenient preparation and very simple use, and can also produce economic benefits for enterprises.
2. The prehydrolysis liquid and polyacrylamide gel type composite plugging agent is suitable for plugging water of high-temperature and high-salinity oil reservoirs with the oil reservoir temperature of 80-130 ℃ and the mineralization degree of 0-100000mg/L, the freezing time is controllable within 1-48 hours, the strength after freezing is high, the stability is strong, and the plugging rate is high.
3. The composite plugging agent prepared by the invention is simple to prepare, can be prepared by using clear water and also can be prepared by using high-salinity oilfield reinjection sewage, and the problem of lack of fresh water resources in the using process is solved.
4. The prehydrolysis liquid added into the prehydrolysis liquid composite plugging agent contains polyhydroxy carbohydrate, wherein polysaccharide or monosaccharide can be subjected to polymerization reaction with polyacrylamide to obtain prehydrolysis liquid/polyacrylamide gel, the gel has carbohydrate branched chains on the molecular structure, and the polyhydroxy structure can improve the hydrophilic performance of the gel so that the gel has stronger adhesive performance, and long-chain molecules can also form hydrogen bonds to improve the crosslinking density so as to improve the mechanical strength of the hydrogel.
5. The prehydrolysis liquid is derived from natural wood, is a byproduct in the pulping industry, is a biomass resource, is efficiently utilized, and is non-toxic and free of byproduct.
Drawings
FIG. 1 is a schematic diagram showing the effect of aging for 4 hours in example 1 of the present application.
FIG. 2 is a schematic diagram showing the effect of aging for 6 hours in example 2 of the present application.
FIG. 3 is a schematic diagram showing the effect of 20-day aging on the state of example 2 in this application.
FIG. 4 is a schematic diagram showing the effect of the state of example 3 in the present application after aging for 14 days.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
In a specific embodiment of the present invention,
example 1: a preparation method of a composite plugging agent based on pulping prehydrolysis liquid comprises the following components in percentage by mass: 0.3wt% of polyacrylamide with molecular weight of 1500 ten thousand, 1% of polyvinyl alcohol, 3wt% of prehydrolysis liquid, 1.0wt% of formaldehyde, 0.3wt% of phenol, 0.2wt% of stabilizing agent and the following components by mass: 0.3g of polyacrylamide, 1.0g of polyvinyl alcohol, 30g (10%) of prehydrolysis liquid, 2.7g of formaldehyde, 0.3g of phenol, 0.1g of thiourea and 66g of clear water.
The specific implementation method comprises the following steps:
1. weighing 66g of clear water, adding 0.3g of polyacrylamide and 1.0g of polyvinyl alcohol powder into the water while stirring, and stirring to completely dissolve the polyacrylamide to obtain a polyacrylamide solution;
2. then 30g of 10% pre-hydrolyzed solution concentrated solution is taken and stirred uniformly;
3. adding 2.7g of formaldehyde, 0.3g of phenol and 0.1g of thiourea into the mixed solution, stirring and dissolving to obtain a glue solution;
4. and (3) sealing the gelling solution prepared in the step in a high-temperature resistant 100mL pressure-resistant bottle or high-temperature reaction kettle, and aging the gelling solution in a 120 ℃ oven for 4 hours to obtain the pre-hydrolysis solution-based composite plugging agent, wherein the result is shown in figure 1.
Example 2: a preparation method of a composite plugging agent based on pulping prehydrolysis liquid comprises the following components in percentage by mass: 0.3wt% of polyacrylamide with molecular weight of 1500 ten thousand, 2.0 wt% of polyvinyl alcohol, 3wt% of prehydrolysis liquid, 1.5wt% of glutaraldehyde, 0.6wt% of phenol and 0.1wt% of stabilizing agent, and the quality control of each component is as follows: 0.3g of polyacrylamide, 2.0g of polyvinyl alcohol, 30g (10%) of prehydrolysis liquid, 2.0g of glutaraldehyde, 1.0g of resorcinol, 0.1g of thiourea and 65mL of 80000mg/L saline.
The specific implementation method comprises the following steps:
1. mixing the saline water and the prehydrolysis water, adding 0.3g of polyacrylamide and 2.0g of polyvinyl alcohol powder into the water while stirring, and stirring to completely dissolve the polyacrylamide and the polyvinyl alcohol powder;
2. adding 2.7g of formaldehyde, 0.3g of phenol and 0.1g of thiourea into the mixed solution, stirring and dissolving to obtain a glue solution;
3. and (3) sealing the gel forming liquid prepared in the step in a high-temperature resistant 100mL pressure-resistant bottle or a high-temperature reaction kettle, and aging in an oven at 130 ℃ for 6 hours to obtain the pre-hydrolyzed liquid-based composite plugging agent, wherein the aging result of 6 hours is shown in figure 2, and the aging result of 20 days is shown in figure 3.
The result shows that the prehydrolysis liquid-based composite plugging agent prepared in the embodiment has better gelling effect and gelling stability under the conditions of 130 ℃ and the mineralization degree of 80000 mg/L.
Example 3: a preparation method of a composite plugging agent based on pulping prehydrolysis liquid comprises the following components in percentage by mass: 1.0 percent of guar gum, 0.4 percent of xanthan gum, 4 percent of prehydrolysis liquid, 0.2 percent of borax, 0.6 percent of sodium hexametaphosphate and 1.0 percent of hexanedial. The quality control of each component is as follows: 1.0g of guar gum, 0.4g of xanthan gum, 50g (8%) of prehydrolysis liquid, 2.0g of adipaldehyde, 0.6g of sodium hexametaphosphate, 0.2g of borax and 65mL of 100000mg/L saline.
The specific implementation method comprises the following steps:
1. mixing the saline water and the prehydrolysis water, adding 0.3g of polyacrylamide and 2.0g of polyvinyl alcohol powder into the water while stirring, and stirring to completely dissolve the polyacrylamide and the polyvinyl alcohol powder;
2. adding 2.7g of formaldehyde, 0.3g of phenol and 0.1g of thiourea into the mixed solution, and stirring and dissolving to obtain a glue solution;
3. and (3) sealing the gelling liquid obtained in the step in a high-temperature resistant 100mL pressure-resistant bottle or a high-temperature reaction kettle, and aging in an oven at 130 ℃ for 6 hours to obtain the pre-hydrolyzed liquid-based composite plugging agent.
The result shows that the prehydrolysis liquid-based composite plugging agent prepared by the embodiment has better gelling effect and gelling stability under the conditions of 130 ℃ and the mineralization degree of 80000 mg/L.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (10)
1. A preparation method of a composite plugging agent based on pulping prehydrolysis liquid is characterized in that the pulping prehydrolysis liquid is used as an enhancer, under the action of a cross-linking agent, the pulping prehydrolysis liquid and a high-molecular polymer form multi-cross-linked jelly at a certain temperature, and the obtained multi-cross-linked jelly has good temperature resistance, salt resistance and strength stability.
2. The preparation method of the composite plugging agent based on pulping prehydrolysis liquid as claimed in claim 1, wherein the pulping prehydrolysis liquid is a liquid generated by pretreating wood chips with dilute alkali and hot steam in the process of producing dissolving pulp in the pulping and papermaking industry, and the wood chips are a mixture of one or more of needle wood chips, broad leaf wood chips and bamboo chip raw materials.
3. The preparation method of the composite plugging agent based on the pulping prehydrolysis liquid as claimed in claim 2, characterized in that the pulping prehydrolysis liquid is subjected to flocculation and membrane filtration to obtain supernatant, the supernatant is concentrated, the mass fraction of the supernatant is 0.5-15%, and the main component is hemicellulose consisting of xylan or xylose, arabinose or arabinose, polydextrose or glucose.
4. The preparation method of the composite plugging agent based on the pulping prehydrolysis liquid as claimed in claim 3, wherein the concentration of the pulping prehydrolysis liquid is controlled to be 0.5-5%.
5. The preparation method of the composite plugging agent based on pulping prehydrolysis liquid according to claim 1, characterized in that the high molecular polymer is a compound of one or more of polyacrylamide with a molecular weight of 500-2000 ten thousand, a modifier thereof, polyvinyl alcohol, guar gum, xanthan gum, welan gum and welan gum.
6. The preparation method of the composite plugging agent based on pulping prehydrolysis liquid according to claim 5, characterized in that the concentration of the high-molecular polymer is controlled to be 0.1-5%.
7. The preparation method of the composite plugging agent based on pulping prehydrolysis liquid according to claim 1, characterized in that the crosslinking agent is one or more of an active phenolic crosslinking agent, resorcinol, hydroquinone, glyoxal, glutaraldehyde, sodium hexametaphosphate, sodium trimetaphosphate, sodium tripolyphosphate, phosphorus oxychloride, adipic acid, oxalyl dihydrazide, borax, and boric acid.
8. The preparation method of the composite plugging agent based on pulping prehydrolysis liquid as claimed in claim 7, wherein the concentration of the cross-linking agent is controlled to be 0.01-3%.
9. The preparation method of the composite plugging agent based on pulping prehydrolysis liquid according to claim 1, characterized in that the stabilizer is one or more of thiourea, sodium thiosulfate, sodium bisulfite and sodium sulfite.
10. The preparation method of the composite plugging agent based on the pulping prehydrolysis liquid as claimed in claim 1, wherein the temperature for forming the colloid is controlled to be 70-130 ℃, the plugging environment is that the degree of formation mineralization is 0-100000mg/L, and the content of calcium and magnesium ions is 0-20000mg/L.
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