CN115197684B - 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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- CN115197684B CN115197684B CN202210859996.6A CN202210859996A CN115197684B CN 115197684 B CN115197684 B CN 115197684B CN 202210859996 A CN202210859996 A CN 202210859996A CN 115197684 B CN115197684 B CN 115197684B
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- 239000007788 liquid Substances 0.000 title claims abstract description 42
- 238000004537 pulping Methods 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 39
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 14
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims description 8
- 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
- 239000000203 mixture Substances 0.000 claims description 6
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 6
- 230000008569 process Effects 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
- 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
- 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
- 150000001875 compounds Chemical class 0.000 claims description 4
- 229940015043 glyoxal Drugs 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
- 239000004328 sodium tetraborate Substances 0.000 claims description 4
- 235000010339 sodium tetraborate Nutrition 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
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-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
- 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
- 229920002310 Welan gum Polymers 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
- 230000015572 biosynthetic process Effects 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
- SWRGUMCEJHQWEE-UHFFFAOYSA-N ethanedihydrazide Chemical compound NNC(=O)C(=O)NN SWRGUMCEJHQWEE-UHFFFAOYSA-N 0.000 claims description 2
- 239000008103 glucose Substances 0.000 claims description 2
- 238000005374 membrane filtration Methods 0.000 claims description 2
- -1 phenolic aldehyde Chemical class 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
- 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
- 239000006228 supernatant Substances 0.000 claims description 2
- 229920001221 xylan Polymers 0.000 claims description 2
- 150000004823 xylans Chemical group 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims 1
- 230000003311 flocculating effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005728 strengthening Methods 0.000 claims 1
- 239000012744 reinforcing agent Substances 0.000 abstract description 6
- 230000008014 freezing Effects 0.000 abstract description 5
- 238000007710 freezing Methods 0.000 abstract description 5
- 239000000499 gel Substances 0.000 description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 13
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 12
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 238000005457 optimization Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 8
- 239000003292 glue Substances 0.000 description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 6
- 230000032683 aging Effects 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000012267 brine Substances 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000002431 foraging effect Effects 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
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 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
- 239000003381 stabilizer Substances 0.000 description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000006185 dispersion Substances 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
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 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
- 229920000875 Dissolving pulp Polymers 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
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-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
- 239000002981 blocking agent Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 150000004676 glycans Chemical class 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
- 230000006872 improvement Effects 0.000 description 1
- 235000014666 liquid concentrate Nutrition 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
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 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
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
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
Landscapes
- 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 the composite plugging agent, wherein the pulping prehydrolysis liquid is used as a reinforcing agent, and under the action of a cross-linking agent, the pulping prehydrolysis liquid and a high polymer form a multi-crosslinked gel body at a certain temperature, and the obtained multi-crosslinked gel body system has better temperature resistance, salt resistance and strength stability. The product prepared by the invention has the characteristics of simple use, environment friendliness, adjustable freezing time and strength of the formed gel, 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 of the oil fields in China adopt a water injection development mode, and as the oil fields enter a middle and later development stage, formation heterogeneity is aggravated, a plurality of oil fields enter a high water-containing period, the water output of the oil fields is serious and even flooded, and the oil field yield is seriously influenced, so that the water control, the oil stabilization and the oil recovery ratio improvement become the main challenges facing the oil fields in China at present. The gel plugging agent has wide application space in the field of profile control and water plugging due to controllable gel forming time and adjustable gel forming strength, and the gel plugging agent is widely applied in oil fields due to the characteristics of high efficiency (compared with cement plugging agents), low cost (compared with resin plugging agents) and the like. For example, chinese patent specification publication No. CN86108877 discloses a zirconium gel plugging agent which consists of gel forming agent Polyacrylamide (PAM) or Methylene Polyacrylamide (MPAM) and cross-linking agent inorganic zirconium compound, and can be used for selectively plugging water in oil wells; but also can be used for water injection wells to adjust the water absorption profile. The water-blocking agent has the advantages of good thermal stability, high water blocking rate, strong adsorptivity, water flushing resistance, long effective period and low cost.
When the environment of the current oil field 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 shutoff effects of the gel plugging agent are poor. The Chinese patent of publication No. CN108300440A provides a bulk gel system reinforced by nano-graphite emulsion, a composition and a preparation method thereof, wherein the composition comprises a polymer matrix, a resin cross-linking agent, a coagulant and nano-graphite emulsion, the specific components in the composition for the gel dispersion have good compatibility, the high-strength bulk gel system can be formed within 3-6 hours at 85-95 ℃, and the obtained gel dispersion has higher temperature resistance and salt resistance. The Chinese patent of publication No. CN103232839A provides a plugging agent suitable for plugging water and controlling profile of high-temperature high-salt oil reservoirs, wherein the main agent of the plugging agent is sulfonated tannin extract or sodium humate; the cross-linking agent is a combination of aldehyde cross-linking agent and phenol cross-linking agent, the stabilizer is water glass and polyacrylamide, the water glass is used for plugging water of an oil layer with the mineralization degree of more than 2.0X105 mg/L at the temperature of 90-150 ℃, the gel forming time is 5-28 hours, the formed gel strength is 0.060-0.085MPa, and the plugging agent has good integrity. The Chinese patent of publication No. CN102925123A provides a preparation method of a compound particle type heat-resistant salt-resistant chemical plugging agent colloid, which consists of thermosetting resin, an inorganic reinforcing agent and a suspending agent, and has the advantages of large plugging rate, high plugging strength, scouring resistance, good long-term stability and excellent salt resistance.
The system improves the gel strength and the temperature resistance and salt resistance, most of the added reinforcing agents are nano particles such as nano graphite, the reinforcing agents are generally expensive, difficult to degrade and not suitable for large-scale use, the gel time is short, the deep oil reservoir is difficult to inject, and the water plugging effect is limited. The other type is low-cost inorganic reinforcing agent such as silicate, which reacts with calcium and magnesium ions in formation water to generate silicic acid gel or sediment, so that the silicate-based inorganic plugging agent has the advantages of high temperature resistance, low strength, short gelation time at high temperature and small plugging radius, and is not suitable for plugging water at high temperature and deep parts. Therefore, research and development of an enhancer which is green, pollution-free, low in price and wide in source and can improve the high temperature resistance and high salt resistance of the plugging agent have important significance.
Disclosure of Invention
The invention aims at solving 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, environment friendliness, adjustable freezing time and strength of formed gel, good temperature resistance and the like.
In order to achieve the above purpose, the invention adopts the following technical scheme: a composite plugging agent based on pulping prehydrolysis liquid is prepared from pulping prehydrolysis liquid serving as a reinforcing agent, and a high-molecular polymer under the action of a crosslinking agent to form a multi-crosslinking gel body at a certain temperature.
As a further optimization of the invention, the pulping prehydrolysis liquid is 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-leaved wood chips and bamboo chip raw materials.
As a further optimization of the invention, the pulping prehydrolysis liquid is obtained by concentrating supernatant liquid obtained by flocculation and membrane filtration, the mass fraction is controlled to be 0.5-15%, and the main component is hemicellulose composed 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 plurality of compounds of polyacrylamide with molecular weight of 500-2000 ten thousand and modified matters thereof, polyvinyl alcohol, guar gum, xanthan gum, welan gum and temperature wheel 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 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 of the colloid is controlled to be 70-130 ℃, the blocking environment is that the mineralization degree of the stratum is 0-100000mg/L, and 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, which ensures that the prepared product has the characteristics of simplicity in use, environment friendliness, adjustable freezing time and strength of formed gel, good temperature resistance and the like.
1. In the preparation method, the sources of the components are wide, the cost is low, the prepared composite plugging agent has stable effect, the preparation is convenient, the use is very simple, and meanwhile, the economic benefit can be manufactured for enterprises.
2. The prehydrolysis liquid and polyacrylamide gel type composite plugging agent is suitable for plugging water of high-temperature high-salt oil reservoirs with the oil reservoir temperature of 80-130 ℃ and the mineralization degree of 0-100000mg/L, the freezing time is controllable for 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 has simple preparation, can be prepared by using clear water, can also be prepared by using high-mineralization oilfield reinjection sewage, and can be used for relieving the problem of lack of fresh water resources in the use process.
4. The prehydrolysis liquid compound plugging agent comprises polyhydroxy saccharide compound, wherein glycan or monosaccharide can be polymerized with polyacrylamide to obtain prehydrolysis liquid/polyacrylamide gel, the gel has saccharide branched chains on molecular structure, the polyhydroxy structure can improve the hydrophilic performance of the gel to enable the gel to have stronger adhesive performance, and hydrogen bonds can be formed between long chain molecules 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 pulping industry, is used for effectively utilizing biomass resources, is nontoxic, and has no byproduct.
Drawings
FIG. 1 is a schematic view showing the effect of aging for 4 hours in example 1 of the present application.
FIG. 2 is a schematic view showing the effect of aging for 6 hours in example 2 of the present application.
Fig. 3 is a schematic view showing the effect of aging for 20 days in example 2 of the present application.
Fig. 4 is a schematic view showing the effect of aging for 14 days in example 3 in the present application.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present invention, the following detailed description of the present invention with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present invention.
In accordance with 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, 1wt% of polyvinyl alcohol, 3wt% of prehydrolysis liquid, 1.0wt% of formaldehyde, 0.3wt% of phenol, 0.2wt% of stabilizer, and the mass control of each component is as follows: 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. 66g of clear water is weighed, 0.3g of polyacrylamide and 1.0g of polyvinyl alcohol powder are added into the water while stirring, and the mixture is stirred to be completely dissolved to obtain a polyacrylamide solution;
2. then 30g of prehydrolysis liquid concentrate with the concentration of 10 percent is taken and stirred uniformly;
3. adding 2.7g of formaldehyde and 0.3g of phenol and 0.1g of thiourea into the mixed solution, stirring and dissolving to prepare a glue solution;
4. the glue solution prepared in the above steps is put into a high temperature resistant 100mL pressure resistant bottle or a high temperature reaction kettle for sealing, and is put into a baking oven at 120 ℃ for aging for 4 hours to obtain the prehydrolysis liquid-based composite plugging agent, and 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: the mass 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 brine.
The specific implementation method comprises the following steps:
1. mixing the brine with the prehydrolysis, 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 and 0.3g of phenol and 0.1g of thiourea into the mixed solution, stirring and dissolving to prepare a glue solution;
3. the glue solution prepared by the steps is put into a high-temperature resistant 100mL pressure-resistant bottle or a high-temperature reaction kettle for sealing, and is put into a baking oven at 130 ℃ for aging for 6 hours to obtain the prehydrolysis liquid-based composite plugging agent, the aging result of the prehydrolysis liquid-based composite plugging agent for 6 hours is shown in figure 2, and the aging result of the prehydrolysis liquid-based composite plugging agent for 20 days is shown in figure 3.
The result shows that the prehydrolysis liquid-based composite plugging agent prepared in the embodiment has better gel forming effect and gel forming 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: guar gum 1.0%, xanthan gum 0.4%, prehydrolysis liquid 4% by weight, borax 0.2%, sodium hexametaphosphate 0.6% and glyoxal 1.0% by weight. The quality control of each component is as follows: guar gum 1.0g, xanthan gum 0.4g, prehydrolysis liquid 50g (8%), glyoxal 2.0g, sodium hexametaphosphate 0.6g, borax 0.2g and 100000mg/L brine 65mL.
The specific implementation method comprises the following steps:
1. mixing the brine with the prehydrolysis, 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 and 0.3g of phenol and 0.1g of thiourea into the mixed solution, and stirring and dissolving to prepare a glue solution;
3. and (3) placing the glue solution obtained in the steps into a high-temperature resistant 100mL pressure-resistant bottle or a high-temperature reaction kettle for sealing, and placing the glue solution into a baking oven at 130 ℃ for aging for 6 hours to obtain the prehydrolysis liquid-based composite plugging agent.
The result shows that the prehydrolysis liquid-based composite plugging agent prepared in the embodiment has better gel forming effect and gel forming 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 have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.
Claims (2)
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 a strengthening agent, under the action of a cross-linking agent, the pulping prehydrolysis liquid and a high polymer form multiple cross-linked gel at a certain temperature, the obtained multiple cross-linked gel has better temperature resistance, salt resistance and strength stability, the pulping prehydrolysis liquid is liquid generated by dilute alkali and hot steam pretreatment of wood chips in the pulping and papermaking industry production and dissolution process, the wood chips are mixture of one or more of needle wood chips, broadleaf wood chips and bamboo chip raw materials, supernatant obtained by flocculating and membrane filtration of the pulping prehydrolysis liquid is concentrated, the mass fraction is 0.5-15%, the main component is xylan or xylose, arabinose or hemicellulose composed of arabinose, polydextrose or glucose, the concentration of the pulping prehydrolysis liquid is controlled to be 0.5-5%, the high molecular polymer is one or a plurality of compounds of polyacrylamide with the molecular weight of 500-2000 ten thousand and modified matters thereof, polyvinyl alcohol, guar gum, xanthan gum, welan gum and temperature wheel gum, the concentration of the high molecular polymer is controlled to be 0.1-5%, the cross-linking agent is one or a plurality of active phenolic aldehyde cross-linking agents, resorcinol, hydroquinone, glyoxal, glutaraldehyde, sodium hexametaphosphate, sodium trimetaphosphate, sodium tripolyphosphate, phosphorus oxychloride, adipic acid, oxalyl dihydrazide, borax and boric acid, and the concentration of the cross-linking agent is controlled to be 0.01-3%.
2. The preparation method of the composite plugging agent based on the pulping prehydrolysis liquid, which is characterized in that the temperature of the colloid is controlled to be 70-130 ℃, the plugging environment is that the formation mineralization degree is 0-100000mg/L, and the content of calcium and magnesium ions is 0-20000mg/L.
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