CN104861953A - Oil field fracture temporary plugging agent and preparation method thereof - Google Patents
Oil field fracture temporary plugging agent and preparation method thereof Download PDFInfo
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- CN104861953A CN104861953A CN201510179833.3A CN201510179833A CN104861953A CN 104861953 A CN104861953 A CN 104861953A CN 201510179833 A CN201510179833 A CN 201510179833A CN 104861953 A CN104861953 A CN 104861953A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—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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- 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
Abstract
The invention discloses an oil field fracture temporary plugging agent and a preparation method, and relates to the technical field of oil field chemistry. The temporary plugging agent comprises an acrylic monomer (A), an acrylamide monomer (B) and a water-soluble crosslinking agent (C). The invention also provides the preparation method of the fracture temporary plugging agent. According to the method, an acrylic monomer (A) solution is regulated to alkaline; the acrylamide monomer (B) and a the water-soluble crosslinking agent (C) are respectively added; after stirring, nitrogen gas is delivered in until a first preset time is reached; the solution is heated to a first preset temperature; an initiator is added, and nitrogen gas is delivered in until a second preset time is reached; the solution is allowed to stand and a polymerization reaction is carried out, such that a polymer is obtained; the polymer is subjected to a drying treatment and shearing granulation, such that the fracture temporary plugging agent is obtained. The fracture temporary plugging agent provided by the invention has the advantages of good bonding temporary plugging ability, good solubility and the like, such that on-site acidification de-plugging is facilitated. The preparation method provided by the invention has the advantages of simple production process and high safety.
Description
Technical field
The present invention relates to technical field of oilfield chemistry, particularly a kind of oil field compression fracture temporary plugging agent and preparation method thereof.
Background technology
Low permeability oil field adopts volume fracturing and multiple fracturing technique to excavate stratum potentiality, improve oil well per-well production usually, this technology mainly rejoins a certain amount of propping agent to stratum, the again laid of propping agent is realized in primary fissure seam, improve fracture flow capacity, reach the object realizing volume increase.
That implements volume fracturing at present both at home and abroad has two kinds: adopt huge discharge to improve net pressure in crack, the natural fracture originally can not opened is forced to be opened, and force the weak structure of crack wall to produce new transverse branch seam, thus gull is extending transversely, increases fracturing reform volume; Or close segmentation section, utilize interference between seam to form more complicated crack.
The refracturing implemented both at home and abroad at present has two kinds of modes: 1) extrude new crack in layer.Due to thick oil pay nonuniformity in the vertical, the degree that takes effect in oil reservoir difference, makes particularly thorny in layer and affects development effectiveness.Oil entry profile can be improved by dead chick Non-primary Trunk Die Cavity or to heterogeneous body thick oil pay refracturing or pressure break with measures such as the new layers of well, thus obtain good effect.2) primary fracture is extended.In oilfield development process, due to the change of the envrionment conditions such as pressure, temperature, original fracturing fracture is caused to lose efficacy.This kind of well needs to add sand and again struts primary fracture, penetrates blocking strips and just can obtain effect in various degree.In addition, fracturing reform scale is inadequate, or supporting crack is short, or fracture flow capacity is low, and this kind of well must strengthen pressure break scale to be continued to extend primary fracture, or improves sand amount to increase fracture flow capacity.
Turnaround fracture Crack Control Technology is that applied chemistry temporary plugging agent makes fluid turn in the earth formation, old seam can be blocked up temporarily or added sand seam in pressure break, thus produce and newly stitch or make fracturing sand to be uniformly distributed in crack, its Main Function has: the new layer of longitudinal profile starts; Crack in the plane of refracturing turns to; The control of the unidirectional extension in crack.This technology can be applicable to refracturing, separate minilayer fracturing, casing deformation well and junk well pressure break, obtains in recent years and promote widely in crack steering technique, multiple cracking pressure break, the effectively long control field of seam.The key that turnaround fracture Crack Control Technology is implemented in stratum, adds diversion agent in real time in construction process, this diversion agent can follow fluid enters borehole from pit shaft to the principle flowed in the minimum direction of resistance, partly enter the crack in stratum or most permeable zone, filter cake bridge blinding is produced at borehole place and high permeability zone, form the pressure difference higher than gash fracture pressure, follow-up work liquid can not be entered to crack and high permeability zone, thus make fracturing liquid enter area of high stress or new fracture layers, impel the new generation of seam and the laid change of propping agent.The diversion agent producing bridge blinding is dissolved in local water or fracturing liquid after construction completes, and formation can not produce pollution.
Chinese patent CN201310311159.0 discloses a kind of water-soluble pressure break and turns to temporary plugging agent and preparation method thereof, this temporary plugging agent is mixed by plant amylum, superpolymer, swelling agent and solidifying agent and forms, naturally dry, then cause diameter to be the particle of 3-6mm, obtain water-soluble pressure break and turn to temporary plugging agent.This water-soluble pressure break turns to temporary plugging agent to have, and solvability is good, adhesivity is strong, the row of returning performance is good, do not pollute the advantages such as stratum, has high breakthrough pressure, can well temporary transient shutoff borehole and most permeable zone, presses off new crack.Chinese patent CN200910092094.9 discloses turnaround fracture temporary plugging agent and its preparation method and application in a kind of low permeability oil field seam, this temporary plugging agent is by gelatine powder, phenylformic acid, treated starch, Natvosol, mixes by quality proportioning containing F tensio-active agent, linking agent, add polyoxyethylene diacrylate and initiator reacts plastic under temperature 80 DEG C, pressure 1.2MPa condition, then through granulation, oil, dry and form, temperature resistance good stability, adhesivity is stablized, and is carried to return to eject at 60 DEG C after dissolving completely by fracturing liquid.Temporary plugging agent disclosed in patent CN201310311159.0 is mix products, and what mainly play stifled effect temporarily is plant amylum, and temperature resistance scarce capacity, can not effectively shutoff smaller aperture crack.Temporary plugging agent disclosed in patent CN200910092094.9 is bone rubber powder modified, and complex manufacturing needs certain temperature and pressure, risk is there is in production process, the temporary plugging agent synthesized is heterogeneous body synthesis, and product exists very great fluctuation process, can not produce by guide field well.
Summary of the invention
In order to solve temperature resistance scarce capacity that existing pressure break temporary plugging agent exists, complex manufacturing and dangerous and cannot the problem such as effectively shutoff smaller aperture crack, the invention provides a kind of oil field compression fracture temporary plugging agent, comprise acrylic monomer (A), acrylamide monomers (B) and water-soluble cross-linker (C), the mol ratio of each component is A: B: C=(0 ~ 0.2): (0 ~ 0.1): (0.001 ~ 0.006).
Described acrylic monomer (A) is 2-acrylamide-2-methylpro panesulfonic acid or vinylformic acid.
Described acrylamide monomers (B) is acrylamide, at least one in N,N-DMAA and N, N-acrylamide.
Described water-soluble cross-linker (C) is N,N methylene bis acrylamide.
Present invention also offers a kind of preparation method of above-mentioned oil field compression fracture temporary plugging agent, comprise: acrylic monomer (A) solution is adjusted to alkalescence, add acrylamide monomers (B) and water-soluble cross-linker (C) successively, the mol ratio of each component is A: B: C=(0 ~ 0.2): (0 ~ 0.1): (0.001 ~ 0.006); After abundant stirring, pass into nitrogen to the first Preset Time; By solution warms to the first preset temp, add initiator, again pass into nitrogen to the second Preset Time; Standing polyreaction obtains polymkeric substance; Described polymkeric substance is carried out drying treatment, shear granulation, obtains turnaround fracture temporary plugging agent.
The chemical structure of general formula of described polymkeric substance is:
Wherein, R
1for-C (O) NHC (2CH
3) CH
2sO
3na or-COONa; R
2for-CONH
2,-CON (CH
3)
2with-CON (CH
3)
2cH
2cH
3in at least one; R
3for (NH)
2(CO)
2cH
2; Each monomer mole ratio m: n: o: p: q=(0.001 ~ 0.006): (0 ~ 0.2): (0 ~ 0.1): (0 ~ 0.1): (0 ~ 0.1).
Described first Preset Time is 30 ~ 50min; Described first preset temp is 35 ~ 65 DEG C; Described second Preset Time is 20 ~ 30min; The temperature of described drying treatment is 100 ~ 110 DEG C.
Described initiator comprises Oxidizing and Reducing Agents, and the mol ratio of described oxygenant and reductive agent is 1: 1.
Described oxygenant is Potassium Persulphate or ammonium persulphate, and described reductive agent is sodium bisulfite or S-WAT.
Described pH value acrylic monomer (A) solution being adjusted to alkalescence is 9 ~ 11.
Pressure break temporary plugging agent provided by the invention, having preferably bonding stifled ability temporarily, and in clear water, the pressure break temporary plugging agent of 5%-10% can the closely knit temporarily blocking layer of mutual bonding formation, piles up certain thickness and can bear very large pressure, meet turnaround fracture construction requirement.Pressure break temporary plugging agent provided by the invention has good solvability, and the dissolution time in clear water can reach more than 180min, automatic de-plugging after being conducive to pressure break; Under weak acid, weak basic condition, dissolution rate can significantly improve, and is conducive to on-the-spot acidification to dispel block, can be used for reservoir and blocks up temporarily.The preparation method of pressure break temporary plugging agent provided by the invention, has that production process is simple, security advantages of higher.
Embodiment
Below in conjunction with embodiment, technical solution of the present invention is further described.
Embodiments provide a kind of oil field compression fracture temporary plugging agent, comprise acrylic monomer (A), acrylamide monomers (B) and water-soluble cross-linker (C), the mol ratio of each component is A: B: C=(0 ~ 0.2): (0 ~ 0.1): (0.001 ~ 0.006).In actual applications, acrylic monomer (A) is 2-acrylamide-2-methylpro panesulfonic acid or vinylformic acid; Acrylamide monomers (B) is acrylamide, one or more in N,N-DMAA and N, N-acrylamide; Water-soluble cross-linker (C) is N,N methylene bis acrylamide.
Present invention also offers a kind of preparation method of above-mentioned oil field compression fracture temporary plugging agent, comprise: the pH value of acrylic monomer (A) solution is adjusted to 9 ~ 11, add acrylamide monomers (B) and water-soluble cross-linker (C) successively, the mol ratio of each component is A: B: C=(0 ~ 0.2): (0 ~ 0.1): (0.001 ~ 0.006); After abundant stirring, pass into nitrogen protection 30 ~ 50min; By solution warms to 35 ~ 65 DEG C, add initiator, again pass into nitrogen 20 ~ 30min; Leave standstill polyreaction and obtain polymkeric substance in 2 ~ 4 hours; Polymkeric substance is carried out drying treatment (drying temperature 100 ~ 110 DEG C), shear granulation, obtain pressure break temporary plugging agent.Wherein, the chemical structure of general formula of polymkeric substance is:
Wherein, R
1for-C (O) NHC (2CH
3) CH
2sO
3na or-COONa; R
2for-CONH
2,-CON (CH
3)
2with-CON (CH
3)
2cH
2cH
3in at least one; R
3for (NH)
2(CO)
2cH
2; Each monomer mole ratio m: n: o: p: q=(0.001 ~ 0.006): (0 ~ 0.2): (0 ~ 0.1): (0 ~ 0.1): (0 ~ 0.1).
Wherein, initiator comprises Oxidizing and Reducing Agents, and the mol ratio of oxygenant and reductive agent is 1: 1; Oxygenant is Potassium Persulphate or ammonium persulphate, and reductive agent is sodium bisulfite or S-WAT.
Below by several specific embodiment, further illustrate the preparation method of embodiment of the present invention pressure break temporary plugging agent:
Embodiment 1: by 10.35gAMPS (2-acrylamide-2-methylpro panesulfonic acid), 35.54gAM (acrylamide), 0.15gN, N-methylene-bisacrylamide adds in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 9 after stirring, under agitation condition, logical nitrogen protection 30min, raised temperature to 35 DEG C, adds 0.027g Potassium Persulphate, 0.01g S-WAT, again passes into nitrogen 20min; Standing and reacting 2 hours, takes out product, and dry at 100 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 2: 14.212gAA (vinylformic acid), 7.108gAM (acrylamide), 0.15gN, N-methylene-bisacrylamide are joined in 100g clear water and fully dissolved, by aqueous sodium hydroxide solution adjust ph to 11 after stirring; Under agitation condition, logical nitrogen protection 35min, raised temperature to 45 DEG C, adds 0.046g ammonium persulphate, 0.021g sodium bisulfite, again passes into nitrogen 23min; Standing and reacting 2.5 hours, takes out product, and dry at 102 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 3: by 10.35gAMPS (2-acrylamide-2-methylpro panesulfonic acid), 2.13gAM (acrylamide), 3.97gN, N-DMAA, 3.03gN, N-acrylamide, 0.15gN, N-methylene-bisacrylamide joins in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 40min, during raised temperature to 60 DEG C, adds 0.041g Potassium Persulphate, 0.02g S-WAT, again passes into nitrogen 26min; Standing and reacting 3 hours, takes out product, and dry at 104 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 4: by 7.206gAA (vinylformic acid), 2.84gAM (acrylamide), 3.97gN, N-DMAA, 2.58gN, N-acrylamide, 0.15gN, N-methylene-bisacrylamide joins in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.041g Potassium Persulphate, and 0.02g S-WAT passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 5: 21.62gAA (vinylformic acid), 14.87gN, N-DMAA, 0.15gN, N-methylene-bisacrylamide are joined in 100g clear water and fully dissolved, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.041g Potassium Persulphate, and 0.02g S-WAT passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is shown in embodiment 2.
Embodiment 6: by 41.42gAMPS (2-acrylamide-2-methylpro panesulfonic acid), 9.91gN, N-DMAA, 0.15gN, N-methylene-bisacrylamide joins in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.027g ammonium persulphate, and 0.01g sodium bisulfite passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 7: 10.81gAA (vinylformic acid), 9.69gN, N-acrylamide, 0.15gN, N-methylene-bisacrylamide are joined in 100g clear water and fully dissolved, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.082g Potassium Persulphate, and 0.04g S-WAT passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 8: by 24.84gAMPS (2-acrylamide-2-methylpro panesulfonic acid), 7.75g N, N-acrylamide, 0.15gN, N-methylene-bisacrylamide joins in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.041g Potassium Persulphate, and 0.02g S-WAT passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 9: by 14.41gAA (vinylformic acid), 3.35g acrylamide, 4.96gN, N-DMAA, 0.15gN, N-methylene-bisacrylamide joins in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.046g ammonium persulphate, and 0.021g sodium bisulfite passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 10: by 37.26gAMPS (2-acrylamide-2-methylpro panesulfonic acid), 2.13g acrylamide, 5.95g N, N-DMAA, 0.15gN, N-methylene-bisacrylamide joins in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.046g ammonium persulphate, and 0.021g sodium bisulfite passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 11: by 14.41gAA (vinylformic acid), 2.84g acrylamide, 7.75gN, N-acrylamide, 0.15gN, N-methylene-bisacrylamide joins in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.027g Potassium Persulphate, and 0.01g sodium bisulfite passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Embodiment 12: by 41.42gAMPS (2-acrylamide-2-methylpro panesulfonic acid), 4.32g acrylamide, 12gN, N-DMAA, 0.15gN, N-methylene-bisacrylamide joins in 100g clear water and fully dissolves, by aqueous sodium hydroxide solution adjust ph to 10 after stirring; Under agitation condition, logical nitrogen protection 50min, raised temperature to 65 DEG C, adds 0.027g ammonium persulphate, and 0.01g sodium bisulfite passes into nitrogen 30min again; Standing and reacting 3 hours, takes out product, and dry at 110 DEG C, shear granulation, obtains pressure break temporary plugging agent, and its chemical structure of general formula is:
Carry out correlated performance evaluation to the pressure break temporary plugging agent of the present embodiment, result is as follows:
1) solvability
Under 80 DEG C of water bath condition, the dissolution time of mini-frac temporary plugging agent in different media (unit, minute), the results are shown in following table 1.
Table 1
From table 1, the present embodiment product can dissolve completely in 5% hydrochloric acid soln, and meeting reservoir protection can the stifled technical requirements of acid dissolve to temporary plugging agent.
2) intensity is blocked up temporarily
Under room temperature condition, the pressure break temporary plugging agent of 1cm thickness is contained in die, when being warming up to 80 DEG C/100 DEG C, measures pressure changing with normal saline solution constant flow 10ml/min.Piezometry the results are shown in following table 2.
Table 2
From table 2, the stifled temporarily intensity of the present embodiment product is higher, can meet pressing crack construction demand.
The pressure break temporary plugging agent of the embodiment of the present invention, having preferably bonding stifled ability temporarily, and in clear water, the pressure break temporary plugging agent of 5%-10% can the closely knit temporarily blocking layer of mutual bonding formation, piles up certain thickness and can bear very large pressure, meet turnaround fracture construction requirement.Pressure break temporary plugging agent of the present invention has good solvability, and the dissolution time in clear water can reach more than 180min, automatic de-plugging after being conducive to pressure break; Under weak acid, weak basic condition, dissolution rate can significantly improve, and is conducive to on-the-spot acidification to dispel block.When reservoir stifled application temporarily, add the pressure break temporary plugging agent of appropriate the present embodiment to stratum, filter cake bridge blinding can be produced at borehole and high permeability zone, drive fracturing liquid to enter area of high stress, link up and do not employed draining district, reach the object of volume increase.The preparation method of the pressure break temporary plugging agent that the embodiment of the present invention provides, has that production process is simple, security advantages of higher.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an oil field compression fracture temporary plugging agent, it is characterized in that, comprise acrylic monomer (A), acrylamide monomers (B) and water-soluble cross-linker (C), the mol ratio of each component is A: B: C=(0 ~ 0.2): (0 ~ 0.1): (0.001 ~ 0.006).
2. oil field compression fracture temporary plugging agent as claimed in claim 1, it is characterized in that, described acrylic monomer (A) is 2-acrylamide-2-methylpro panesulfonic acid or vinylformic acid.
3. oil field compression fracture temporary plugging agent as claimed in claim 1, is characterized in that, described acrylamide monomers (B) is acrylamide, at least one in N,N-DMAA and N, N-acrylamide.
4. oil field compression fracture temporary plugging agent as claimed in claim 1, it is characterized in that, described water-soluble cross-linker (C) is N,N methylene bis acrylamide.
5. the preparation method of an oil field compression fracture temporary plugging agent as claimed in claim 1, it is characterized in that, comprise: acrylic monomer (A) solution is adjusted to alkalescence, add acrylamide monomers (B) and water-soluble cross-linker (C) successively, the mol ratio of each component is A: B: C=(0 ~ 0.2): (0 ~ 0.1): (0.001 ~ 0.006); After abundant stirring, pass into nitrogen to the first Preset Time; By solution warms to the first preset temp, add initiator, again pass into nitrogen to the second Preset Time; Standing polyreaction obtains polymkeric substance; Described polymkeric substance is carried out drying treatment, shear granulation, obtains pressure break temporary plugging agent.
6. the preparation method of oil field compression fracture temporary plugging agent as claimed in claim 5, it is characterized in that, the chemical structure of general formula of described polymkeric substance is:
Wherein, R
1for-C (O) NHC (2CH
3) CH
2sO
3na or-COONa; R
2for-CONH
2,-CON (CH
3)
2with-CON (CH
3)
2cH
2cH
3in at least one; R
3for (NH)
2(CO)
2cH
2; Each monomer mole ratio m: n: o: p: q=(0.001 ~ 0.006): (0 ~ 0.2): (0 ~ 0.1): (0 ~ 0.1): (0 ~ 0.1).
7. the preparation method of oil field compression fracture temporary plugging agent as claimed in claim 5, it is characterized in that, described first Preset Time is 30 ~ 50min; Described first preset temp is 35 ~ 65 DEG C; Described second Preset Time is 20 ~ 30min; The temperature of described drying treatment is 100 ~ 110 DEG C.
8. the preparation method of oil field compression fracture temporary plugging agent as claimed in claim 5, it is characterized in that, described initiator comprises Oxidizing and Reducing Agents, and the mol ratio of described oxygenant and reductive agent is 1: 1.
9. the preparation method of oil field compression fracture temporary plugging agent as claimed in claim 8, it is characterized in that, described oxygenant is Potassium Persulphate or ammonium persulphate, and described reductive agent is sodium bisulfite or S-WAT.
10. the preparation method of oil field compression fracture temporary plugging agent as claimed in claim 5, is characterized in that, described pH value acrylic monomer (A) solution being adjusted to alkalescence is 9 ~ 11.
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| CN107828010A (en) * | 2017-11-03 | 2018-03-23 | 四川晨瑞石油化工有限责任公司 | Polymer, diverting agent and preparation method thereof |
| CN108119122A (en) * | 2017-12-05 | 2018-06-05 | 北京捷贝通石油技术股份有限公司 | It is a kind of to cover the well staged fracturing method that complicates |
| CN108825196A (en) * | 2018-05-29 | 2018-11-16 | 北京捷贝通石油技术股份有限公司 | A kind of temporary stifled volume fracturing process of screen casing high angle hole |
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| CN110819325A (en) * | 2019-10-24 | 2020-02-21 | 北京大德广源石油技术服务有限公司 | Repeated fracturing temporary plugging agent and preparation method thereof |
| CN113322053A (en) * | 2021-04-14 | 2021-08-31 | 中国石油天然气股份有限公司 | Temporary blocking steering system and preparation method thereof |
| CN114656593A (en) * | 2022-04-23 | 2022-06-24 | 中海油田服务股份有限公司 | High-temperature deformable water-absorbent resin temporary plugging agent and preparation method thereof |
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| CN116004204A (en) * | 2021-10-22 | 2023-04-25 | 大庆油田有限责任公司 | Water-soluble temporary plugging agent for fracturing and preparation method and use method thereof |
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| CN106496410A (en) * | 2016-10-28 | 2017-03-15 | 中国科学院青海盐湖研究所 | A kind of permeability-reducing admixture and its preparation method and application |
| CN109554172A (en) * | 2017-09-26 | 2019-04-02 | 中国石油化工股份有限公司 | A kind of acid fracturing diverting agent and its application |
| CN107828010A (en) * | 2017-11-03 | 2018-03-23 | 四川晨瑞石油化工有限责任公司 | Polymer, diverting agent and preparation method thereof |
| CN108119122A (en) * | 2017-12-05 | 2018-06-05 | 北京捷贝通石油技术股份有限公司 | It is a kind of to cover the well staged fracturing method that complicates |
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| CN109054788A (en) * | 2018-08-09 | 2018-12-21 | 高阳 | A kind of pressure break diverting agent and preparation method thereof |
| CN110003870A (en) * | 2019-05-13 | 2019-07-12 | 中科宝辰(北京)科技有限公司 | A kind of pressure break degradable water dissolubility diverting agent and preparation method thereof |
| CN110819325A (en) * | 2019-10-24 | 2020-02-21 | 北京大德广源石油技术服务有限公司 | Repeated fracturing temporary plugging agent and preparation method thereof |
| CN113322053A (en) * | 2021-04-14 | 2021-08-31 | 中国石油天然气股份有限公司 | Temporary blocking steering system and preparation method thereof |
| CN113322053B (en) * | 2021-04-14 | 2022-08-05 | 中国石油天然气股份有限公司 | Temporary blocking steering system and preparation method thereof |
| CN115850573A (en) * | 2021-09-24 | 2023-03-28 | 中国石油化工股份有限公司 | Temporary plugging agent and preparation method and application thereof |
| CN115850573B (en) * | 2021-09-24 | 2023-11-07 | 中国石油化工股份有限公司 | Temporary plugging agent and preparation method and application thereof |
| CN116004204A (en) * | 2021-10-22 | 2023-04-25 | 大庆油田有限责任公司 | Water-soluble temporary plugging agent for fracturing and preparation method and use method thereof |
| CN114656593A (en) * | 2022-04-23 | 2022-06-24 | 中海油田服务股份有限公司 | High-temperature deformable water-absorbent resin temporary plugging agent and preparation method thereof |
| CN114920876A (en) * | 2022-05-25 | 2022-08-19 | 东营施普瑞石油工程技术有限公司 | Temporary plugging agent and preparation method thereof |
| CN114920876B (en) * | 2022-05-25 | 2023-10-03 | 东营施普瑞石油工程技术有限公司 | Temporary plugging agent and preparation method thereof |
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