CN115160500A - Multi-response controllable crosslinking degradation gel particle temporary plugging agent and preparation method and application thereof - Google Patents
Multi-response controllable crosslinking degradation gel particle temporary plugging agent and preparation method and application thereof Download PDFInfo
- Publication number
- CN115160500A CN115160500A CN202210891218.5A CN202210891218A CN115160500A CN 115160500 A CN115160500 A CN 115160500A CN 202210891218 A CN202210891218 A CN 202210891218A CN 115160500 A CN115160500 A CN 115160500A
- Authority
- CN
- China
- Prior art keywords
- gel
- acid
- initiator
- temporary plugging
- parts
- 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.)
- Pending
Links
- 239000007863 gel particle Substances 0.000 title claims abstract description 51
- 230000015556 catabolic process Effects 0.000 title claims abstract description 27
- 238000004132 cross linking Methods 0.000 title claims abstract description 27
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 27
- 230000004044 response Effects 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 229920000642 polymer Polymers 0.000 claims abstract description 16
- 239000003999 initiator Substances 0.000 claims abstract description 15
- 230000002378 acidificating effect Effects 0.000 claims abstract description 12
- 239000000178 monomer Substances 0.000 claims abstract description 11
- 229920001661 Chitosan Polymers 0.000 claims abstract description 10
- 238000011065 in-situ storage Methods 0.000 claims abstract description 10
- 230000035699 permeability Effects 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims abstract description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 4
- MAGFQRLKWCCTQJ-UHFFFAOYSA-N 4-ethenylbenzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=C(C=C)C=C1 MAGFQRLKWCCTQJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 3
- BNKAXGCRDYRABM-UHFFFAOYSA-N ethenyl dihydrogen phosphate Chemical compound OP(O)(=O)OC=C BNKAXGCRDYRABM-UHFFFAOYSA-N 0.000 claims abstract description 3
- YVURAEQQLUQPFO-UHFFFAOYSA-N phosphoric acid;styrene Chemical compound OP(O)(O)=O.C=CC1=CC=CC=C1 YVURAEQQLUQPFO-UHFFFAOYSA-N 0.000 claims abstract description 3
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000006116 polymerization reaction Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000008398 formation water Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulphite Substances [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 238000011161 development Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000012966 redox initiator Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 4
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 230000000593 degrading effect Effects 0.000 claims 2
- 235000019395 ammonium persulphate Nutrition 0.000 claims 1
- 239000002981 blocking agent Substances 0.000 claims 1
- 235000019394 potassium persulphate Nutrition 0.000 claims 1
- 230000001052 transient effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 230000004913 activation Effects 0.000 abstract description 2
- 230000006698 induction Effects 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 239000000499 gel Substances 0.000 description 46
- 239000003921 oil Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000005904 alkaline hydrolysis reaction Methods 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 150000003254 radicals Chemical group 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 1
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 1
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000012935 ammoniumperoxodisulfate Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000008601 oleoresin Substances 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000002265 prevention Effects 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
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- 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
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
-
- 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
-
- 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
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
-
- 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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/887—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a multiple-response controllable crosslinking degradation gel particle temporary plugging agent, and a preparation method and application thereof. The temporary plugging agent comprises the following raw materials in parts by weight in a solvent-free manner: 40-55.0 parts of chitosan; 40-55.0 parts of an acidic monomer; 0.01-2.0 parts of initiator; wherein the acidic monomer is at least one of methacrylic acid, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, vinylsulfonic acid, vinylphosphoric acid, styrene phosphoric acid, p-styrene sulfonic acid or similar derivatives thereof. The temporary plugging agent is subjected to salinity induction to form ion cross-linked integral gel in situ, so that effective plugging of large pore canals, cracks, crevices or wellbores can be realized, and the pressure bearing capacity of the gel body is integrally improved; meanwhile, the activation is excited by the formation temperature and the alkaline gel breaker, the body gel is hydrated and degraded into a polymer solution in situ to lose the plugging effect, the permeability of an oil layer is recovered, and the effect of protecting a reservoir is achieved.
Description
Technical Field
The invention belongs to the field of underground energy exploration and development, and particularly relates to a multiple-response controllable crosslinked degraded gel particle temporary plugging agent, and a preparation method and application thereof.
Background
The plugging material controls the fracture-cave malignant leakage, reduces the drilling cost and improves the oil gas recovery ratio; the temporary plugging agent is diverted to fracture to form a new fracture hole, so that heat exchange between fluid and dry hot rock is increased, and the utilization efficiency of geothermal resources is improved; the chemical water shutoff agent regulates and controls the profile of an oil reservoir, improves the water drive effect and increases the oil gas yield. Therefore, aiming at different application scenes, underground energy resources such as cracks, holes, assisted geothermal energy, shale gas, petroleum and the like are efficiently processed for exploitation and utilization, however, how to efficiently process the cracks and the holes by using the temporary plugging agent is a technical problem which needs to be solved urgently in underground energy exploration and development.
At present, in the field of underground energy exploration and development, an acidic temporary plugging agent represented by calcium carbonate has high plugging strength and high acidolysis speed, but the acidic plugging removal process is complex and causes great damage to an oil well. The oleoresin can adapt to different stratums, is changed from a solid particle into a molten state, and can rapidly plug cracks, after construction is finished, crude oil can be dissolved and discharged, the permeability of an oil layer is recovered, and the oil layer is protected. The cellulose is taken as a representative alkaline temporary plugging agent, has strong acid resistance, is easy to dissolve in alkaline solution, but has low slot selectivity, higher hydration residue rate, poor plugging effect on large-size slots and high production cost, and limits the field application of the temporary plugging agent. The water-soluble polyacrylamide gel system has poor gel stability and low mechanical strength due to the structural characteristics of the system, and the gel forming time is difficult to control. The ammonium persulfate gel breaker is difficult to deeply break, so that the gel breaking efficiency is low, the reverse drainage difficulty in the later construction period is easily caused, and the formation damage is high. The compatibility of the pre-crosslinked gel particles and the fracture and cave is poor, the inert accumulation pressure bearing is low, and the large-size fracture and cave and well repairing operation are difficult to regulate and control. The chemical action among particles, gel particles, a fracture matrix and the inner wall of a shaft is lacked, and secondary leakage channels appear due to stratum water scouring and shaft pressure fluctuation, so that secondary leakage is caused.
In order to solve the technical problem of underground energy seam hole treatment, the gel body is constructed by utilizing the chemical and physical actions among gel particles, so that the residence capacity of the gel is improved, and the pressure bearing capacity is increased. The particles are consolidated and solidified through the loose gel particles to form the high-strength bridge plug, so that the mechanical property of the bridge plug is improved. However, the complex system has complex and various formulas, so that the feasibility of engineering operation is seriously weakened by factors such as weak plugging effect, poor high temperature resistance effect, strong formation water dilution effect, complex multi-component operation and the like. The pre-crosslinked coated particles release a secondary crosslinking agent by depending on the coating of metal ions, and due to the dilution effect of a large amount of water, the secondary crosslinking between the particles is weaker, and the temperature resistance of the metal ion coordination crosslinking is poor. The self-healing gel particles form body gel based on reversible physical and chemical actions, so that the defects of the traditional gel particles are overcome, the pressure bearing capacity is improved, and the leakage stoppage operation time is saved. However, although the hydrogen bond and coordination bond crosslinked gel particles have good self-healing performance, the temperature sensitivity is strong, the hydrogen bond is broken in a high-temperature environment, the gel network structure is damaged, the body gel is converted into fluid, the plugging effect is further lost, the applicable temperature range is limited, and the inherent contradiction between the plugging strength and the difficulty in plugging removal exists. The existing gel material relies on limited water environment for re-crosslinking and self-healing functions, and the realization of the functions is limited by the infinite water environment of the stratum.
At present, the re-crosslinked hydrogel plugging material is in a technology research and development stage, and the plugging material has single function, complex preparation process and limited application temperature. Therefore, based on the requirement of underground energy seam hole treatment, various response controllable crosslinking degradation gel particles are developed to meet different application scenes, harmony and unity of plugging strength and controllable plugging removal are realized, and the underground energy efficient exploitation and utilization are of great engineering significance.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a plurality of response controllable crosslinking degradation gel particle temporary plugging agents, and a preparation method and application thereof. The gel particles can form high-strength body gel in situ in cracks, pipelines and karst caves through induction of formation water, the plugging effect is good, the mechanical strength is high, the temperature resistance is good, various cracks and caves can be plugged efficiently, the formed body gel has the characteristics of salt hydrolysis, alkaline hydrolysis and pyrolysis, the degradation speed is high, the plugging effect is lost, the permeability of an oil layer is recovered, and the purpose of protecting the reservoir is achieved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the multiple response controllable crosslinking degradation gel particle temporary plugging agent comprises the following raw materials in parts by weight in a solvent-free manner:
40-55.0 parts of chitosan;
40-55.0 parts of acidic monomer;
0.01-2.0 parts of initiator; wherein:
the acidic monomer is at least one of methacrylic acid, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, vinylsulfonic acid, vinylphosphoric acid, styrene phosphoric acid, p-styrene sulfonic acid or similar derivatives thereof.
According to the scheme, the initiator is a free radical initiator, a redox initiator or a photoinitiator. Preferably, the free radical initiator is a water soluble ammonium or potassium peroxodisulfate; or oil-soluble azodiisobutyronitrile, ammonium peroxodisulfate-sodium sulfite, potassium peroxodisulfate-sodium sulfite; the photoinitiator is 2-hydroxy-2-methyl-1-phenyl acetone (2959) or 2,4,6-trimethylbenzoyl-diphenylphosphine oxide.
The preparation method of the multiple response controllable homogeneous crosslinking degradation gel particle temporary plugging agent comprises the following steps:
1) Taking chitosan and an acidic monomer as raw materials, and carrying out polymerization reaction in an inert gas atmosphere under the action of an initiator to obtain polymerized body gel;
2) Cutting the polymer body gel obtained in the step 2) into blocks, drying in vacuum, naturally cooling to room temperature, crushing and screening to obtain various influence-controllable homogeneous crosslinking degradation gel particle temporary plugging agents.
According to the scheme, in the step 1), chitosan and acidic monomers are mixed and dissolved in water to obtain a uniformly dispersed mixture, nitrogen is introduced to remove oxygen in the system, and an initiator is added before or after oxygen removal according to actual needs to polymerize to obtain the polymer body gel.
Preferably, when the initiator is a redox initiator, the polymerization condition is that the temperature is between room temperature and 80 ℃, the polymerization time is 1 to 12 hours, and after the polymerization is finished, natural cooling is carried out to obtain polymer body gel; and when the initiator is a photoinitiator, polymerizing for 1-12 hours under the irradiation of ultraviolet light to obtain the polymer bulk gel.
According to the scheme, in the step 2), the drying temperature is from room temperature to 100 ℃, and the drying time is 1-24 hours.
According to the scheme, in the step 2), the particle size of the obtained re-crosslinked gel particles is in the size of nanometer, millimeter or centimeter level through crushing and screening.
Provides an application of the controllable crosslinked degraded gel particle temporary plugging agent in the fields of leakage prevention and plugging, water plugging and profile control, hydraulic fracturing, fluid loss control and the like in underground energy exploration and development.
According to the scheme, the application is as follows:
preparing the controllable crosslinking degradation gel particle temporary plugging agent into suspension by using water, enabling the mass percentage content of the gel particles to be 0.01-15.0%, and pumping the suspension into a stratum; under the conditions of formation water, fracturing fluid, drilling fluid and the like, the gel particles are subjected to spontaneous crosslinking to form high-strength body gel in situ, so that effective profile control and/or plugging of formation cracks are realized, and under the action of the gel breaker, the body gel is rapidly subjected to hydration degradation and directional plugging removal to recover the permeability.
Preferably, the water may be brine, wherein the brine concentration is up to 20%.
Preferably, the water used to prepare the suspension may be injection water or reinjection water.
Preferably, the gel breaker is an inorganic organic base such as sodium hydroxide aqueous solution, sodium carbonate solution, triethanolamine and the like.
The controllable crosslinking degradation gel particle temporary plugging agent is characterized in that gel particles are crosslinked again in formation water, fracturing fluid or drilling fluid, and high-strength body gel is formed in situ in a fracture hole; the in-situ formed body gel is hydrolyzed and degraded into a water-like low-viscosity solution under the alkaline and high-temperature conditions of a salt solution, and the mechanism is as follows: under the action of formation water, ionic bonds between yin-yang compounds between gel particle interfaces are destroyed by micromolecular salt, so that molecular chain interfaces flow again, after the gel particle interfaces are in physical contact, the molecular chain interfaces flow and entangle again to form new entangled ionic bonds, further the limitation of the interfaces is broken through, the new entangled ionic bonds are fused together, and finally, the gel is crosslinked again to form complete body gel; the suspension bond (such as unpaired anion or cation bond) of the body gel has strong ionic interaction with the interfaces of rock, metal and the like, so that the body gel is bonded with the surfaces of the rock, the metal and the like, and the pressure bearing capacity of the gel is improved; salt solution and alkali conditions destroy anion and cation bonds of the body gel, high-temperature thermal degradation is performed to obtain the effect, and natural high molecules are decomposed into small molecular compounds to be hydrated, so that the formed body gel has multiple response properties and is degraded into low-viscosity solution.
The invention has the following beneficial effects:
1. the invention provides a multiple response controllable crosslinking degradation gel particle temporary plugging agent, which is induced by salinity to form ion crosslinking integral gel in situ, thereby realizing effective plugging of large pore canals, cracks, crevices or mineshafts and improving the pressure bearing capacity of the gel body on the whole; meanwhile, the stratum temperature and the activation of the alkaline gel breaker are utilized to effectively regulate and control the degradation kinetics of the body gel after re-crosslinking, the body gel is hydrated and degraded into polymer solution in situ to lose the plugging effect, the permeability of an oil layer is recovered, and the effect of protecting a reservoir is achieved; the body gel formed by the gel particles has high mechanical strength and good temperature resistance, can efficiently block various types of cracks, has the characteristics of salt hydrolysis, alkaline hydrolysis and pyrolysis, is high in degradation speed, loses the blocking effect, recovers the oil layer permeability, and achieves the purpose of protecting a reservoir.
2. The temporary plugging agent of the re-crosslinkable gel particles forms chemical crosslinking gel particles in the preparation process, ensures the integrity in the construction process, ensures the re-crosslinking property under the condition of infinite water limit of a stratum, has simple preparation process and is easy for industrial production.
Drawings
FIG. 1 is a diagram showing in-situ construction of bulk gel and hydration degradation of gel particles in example 2.
FIG. 2 shows the regrowth characteristic (A) and self-healing performance (B) of the gel particles of example 2.
FIG. 3 shows the degradation kinetics of the gel particles of example 2 at different temperatures.
FIG. 4 is the viscosity of the gel particles of example 2 after hydration degradation of the formed bulk gel.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
Example 1
The preparation method of the multiple response controllable crosslinking degradation gel particle temporary plugging agent comprises the following steps:
taking 10.0 g of chitosan, 10.0 g of acrylic acid, 50 mg of ammonium persulfate and 100 ml of water, placing the mixture into a flask, and introducing nitrogen for 30 minutes to remove oxygen in the system; placing the mixture in a magnetic heating stirrer, wherein the reaction temperature is 80 ℃, and the polymerization time is 12 hours; naturally cooling, crushing the obtained polymer body gel, and drying in a vacuum drying oven at 60 ℃ for 12 hours; naturally cooling to room temperature, further crushing and screening to obtain gel particles with the environmental response size of 1 mm to 1 cm according to requirements.
The gel particles were crosslinked with 1% sodium chloride.
Example 2
The preparation method of the multiple response controllable crosslinking degradation gel particle temporary plugging agent comprises the following steps:
taking 10.0 g of chitosan, 10.0 g of 2-acrylamide-2-methylpropanesulfonic acid and 100 ml of water, placing the mixture into a flask, introducing nitrogen for 30 minutes to remove oxygen in the system, adding 20 mg of ammonium peroxodisulfate and 20 mg of sodium sulfite, polymerizing to obtain large gel blocks, crushing and screening the obtained polymer body gel, placing the crushed and screened polymer body gel in a vacuum drying oven for drying at the drying temperature of 60 ℃ for 12 hours; naturally cooling to room temperature to obtain gel particles with environmental response size of 1 mm to 1 cm.
The gel particles containing 2-acrylamido-2-methylpropanesulfonic acid monomer had a re-crosslinking salinity of 2%. The mechanical strength of the gel was 3000Pa.
Example 3
The preparation method of the multiple response controllable crosslinking degradation gel particle temporary plugging agent comprises the following steps:
taking 10.0 g of chitosan, 10.0 g of styrene sulfonic acid and 100 ml of water, placing the mixture into a flask, and introducing nitrogen for 30 minutes to remove oxygen in the system; adding 2959 mg of photoinitiator, and irradiating for 6 hours by ultraviolet light to obtain high-viscosity polymer solution; crushing and screening the obtained polymer body gel, and drying in a vacuum drying oven at 60 ℃ for 12 hours; naturally cooling to room temperature to obtain gel particles with environmental response size of 0.5 mm to 1 cm.
The indoor degradation laboratory proves that the body gel can be automatically degraded into polymer solution at 110 ℃, and the degradation time is 1 week.
Claims (10)
1. The multiple response controllable crosslinking degradation gel particle temporary plugging agent is characterized by comprising the following raw materials in parts by weight in a solvent-free manner:
40-55.0 parts of chitosan;
40-55.0 parts of acidic monomer;
0.01-2.0 parts of initiator; wherein:
the acidic monomer is at least one of methacrylic acid, acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid, vinylsulfonic acid, vinylphosphoric acid, styrene phosphoric acid, p-styrene sulfonic acid or similar derivatives thereof.
2. The plurality of responsive controlled cross-linking degrading gel particle transient blocking agents of claim 1, wherein said initiator is a redox initiator or a photoinitiator.
3. The plurality of fugitive agents for particles of gel degrading responsive to controlled crosslinking of claim 2, wherein said redox initiator is a water soluble ammonium or potassium peroxydisulfate; or oil-soluble azodiisobutyronitrile, ammonium peroxodisulfate-sodium sulfite, potassium peroxodisulfate-sodium sulfite; the photoinitiator is 2-hydroxy-2-methyl-1-phenyl acetone (2959) or 2,4,6-trimethylbenzoyl-diphenylphosphine oxide.
4. A method of preparing a plurality of temporary plugging agents responsive to controllably cross-linked degradable gel particles as claimed in any one of claims 1 to 3, comprising the steps of:
1) Taking chitosan and an acidic monomer as raw materials, and carrying out polymerization reaction in an inert gas atmosphere under the action of an initiator to obtain polymerized body gel;
2) Cutting the polymer body gel obtained in the step 2) into blocks, drying in vacuum, naturally cooling to room temperature, crushing and screening to obtain various temporary plugging agents with response, controllable crosslinking and degradation gel particles.
5. The preparation method according to claim 4, wherein in the step 1), the chitosan and the acidic monomer are mixed and dissolved in water to obtain a uniformly dispersed mixture, nitrogen is introduced to remove oxygen in the system, and an initiator is added before or after oxygen removal according to actual needs to perform polymerization to obtain the polymer bulk gel.
6. The preparation method according to claim 5, wherein when the initiator is a redox initiator, the polymerization conditions are from room temperature to 80 ℃ and the polymerization time is from 1 to 12 hours, and after the polymerization is finished, natural cooling is performed to obtain a polymer bulk gel; and when the initiator is a photoinitiator, polymerizing for 1-12 hours under the irradiation of ultraviolet light to obtain the polymer bulk gel.
7. The method according to claim 4, wherein in the step 2), the drying temperature is from room temperature to 100 ℃ and the drying time is from 1 to 24 hours; the particle size of the obtained re-crosslinked gel particles is nano, millimeter or centimeter.
8. Use of a plurality of responsive controllably cross-linked degradable gel particle temporary plugging agents of any one of claims 1-3 in the field of leak-proof plugging, water plugging and profile control, hydraulic fracturing or fluid loss control in underground energy exploration and development.
9. The application according to claim 8, characterized in that it is specifically:
preparing the multiple response controllable crosslinking degradation gel particle temporary plugging agents into suspension by using water, enabling the mass percentage content of the gel particles to be 0.01-15.0%, and pumping the suspension into a stratum; under the conditions of formation water, fracturing fluid, drilling fluid and the like, the gel particles are spontaneously crosslinked to form high-strength body gel in situ, so that effective profile control and/or plugging of formation cracks are realized, and under the action of the gel breaker, the body gel is rapidly hydrated and degraded and directionally unplugged to restore the permeability.
10. Use according to claim 9, wherein the breaker is an aqueous sodium hydroxide solution, a sodium carbonate solution or triethanolamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210891218.5A CN115160500A (en) | 2022-07-27 | 2022-07-27 | Multi-response controllable crosslinking degradation gel particle temporary plugging agent and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210891218.5A CN115160500A (en) | 2022-07-27 | 2022-07-27 | Multi-response controllable crosslinking degradation gel particle temporary plugging agent and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115160500A true CN115160500A (en) | 2022-10-11 |
Family
ID=83497938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210891218.5A Pending CN115160500A (en) | 2022-07-27 | 2022-07-27 | Multi-response controllable crosslinking degradation gel particle temporary plugging agent and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115160500A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116120642A (en) * | 2023-02-13 | 2023-05-16 | 长江大学 | Gel material and preparation method and application thereof |
| CN116333705A (en) * | 2023-03-03 | 2023-06-27 | 长江大学 | Responsive gel temporary plugging agent applicable to high-temperature oil reservoir as well as preparation method and application thereof |
| CN117264612A (en) * | 2023-11-23 | 2023-12-22 | 西南石油大学 | Controllable self-degrading temporary plugging reservoir protective agent for fractured hydrocarbon reservoir and preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5304620A (en) * | 1992-12-21 | 1994-04-19 | Halliburton Company | Method of crosslinking cellulose and guar derivatives for treating subterranean formations |
| WO2018031655A1 (en) * | 2016-08-09 | 2018-02-15 | Board Of Regents, The University Of Texas System | Stimuli-responsive polymer particles and methods of using thereof |
| CN109776728A (en) * | 2019-01-14 | 2019-05-21 | 中国石油大学(华东) | Temporary plugging agent for drilling fluid and preparation method thereof and water-base drilling fluid and application |
-
2022
- 2022-07-27 CN CN202210891218.5A patent/CN115160500A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5304620A (en) * | 1992-12-21 | 1994-04-19 | Halliburton Company | Method of crosslinking cellulose and guar derivatives for treating subterranean formations |
| WO2018031655A1 (en) * | 2016-08-09 | 2018-02-15 | Board Of Regents, The University Of Texas System | Stimuli-responsive polymer particles and methods of using thereof |
| CN109776728A (en) * | 2019-01-14 | 2019-05-21 | 中国石油大学(华东) | Temporary plugging agent for drilling fluid and preparation method thereof and water-base drilling fluid and application |
Non-Patent Citations (1)
| Title |
|---|
| 刘廷国等: ""微波辅助合成壳聚糖基高吸水性树脂"", 《核农学报》, vol. 26, no. 3, pages 527 - 534 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116120642A (en) * | 2023-02-13 | 2023-05-16 | 长江大学 | Gel material and preparation method and application thereof |
| CN116120642B (en) * | 2023-02-13 | 2024-06-11 | 长江大学 | Gel material and preparation method and application thereof |
| CN116333705A (en) * | 2023-03-03 | 2023-06-27 | 长江大学 | Responsive gel temporary plugging agent applicable to high-temperature oil reservoir as well as preparation method and application thereof |
| CN117264612A (en) * | 2023-11-23 | 2023-12-22 | 西南石油大学 | Controllable self-degrading temporary plugging reservoir protective agent for fractured hydrocarbon reservoir and preparation method |
| CN117264612B (en) * | 2023-11-23 | 2024-01-30 | 西南石油大学 | Controllable self-degrading temporary plugging reservoir protective agent for fractured hydrocarbon reservoir and preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115160500A (en) | Multi-response controllable crosslinking degradation gel particle temporary plugging agent and preparation method and application thereof | |
| JP6848006B2 (en) | Methods for Forming High-Efficiency Geothermal Well Holes | |
| US9771785B2 (en) | Methods for enhancing and maintaining fracture conductivity after fracturing shale formations without proppant placement | |
| CN113736438B (en) | Pressure-bearing degradable temporary plugging agent for well repair and preparation method and application thereof | |
| WO2013036478A2 (en) | Disintegrative particles to release agglomeration agent for water shut-off downhole | |
| WO2012082962A1 (en) | High temperature temporary diverter and lost circulation material | |
| US9677386B2 (en) | Methods of stabilizing weakly consolidated subterranean formation intervals | |
| CN112852396B (en) | Multifunctional blocking remover and preparation method thereof | |
| CN115678521B (en) | Temporary plugging agent for reservoir protection and preparation method thereof | |
| CN111574976A (en) | Enhanced leaking stoppage gel and preparation method thereof | |
| CN105238372A (en) | High-molecular gel plugging agent and preparation method thereof | |
| Chen et al. | Experimental study on fiber balls for bridging in fractured-vuggy reservoir | |
| WO2018080503A1 (en) | Electrically controlled propellant materials for subterranean zonal isolation and diversion | |
| CN116023919B (en) | Capsule blocking remover and composite blocking removing method | |
| US4848464A (en) | Method to improve use of polymers for injectivity profile control in enhanced oil recovery | |
| CA2959595C (en) | Polymeric metal crosslinker for shear tolerant fracturing fluid application | |
| CN102796503B (en) | Intercalation polymer gel diverting agent | |
| CN108300442A (en) | A kind of shale gas pressure break overcome high stress difference temporarily stall to diverting agent and preparation method thereof | |
| CN116410399A (en) | Gel microsphere profile control agent with salt response characteristic and preparation method and application thereof | |
| CN114574174B (en) | Rheological modifier for water-based drilling fluid, preparation method of rheological modifier and water-based drilling fluid | |
| US5103907A (en) | Steam injection profile control agent and process | |
| CN116218493A (en) | Soluble liquid bridge plug, preparation method and horizontal well sectional water shutoff method | |
| Tang et al. | A temperature-sensitive plugging material composed of shape memory polymer and self-made gel | |
| CN116081617B (en) | Ultra-deep oil and gas reservoir wet phase expandable modified graphite water control system and preparation method and application thereof | |
| CN117659968A (en) | Acid-soluble composite plugging agent and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |