CN110257037A - A kind of well cementation curable preposition liquid system and preparation method thereof - Google Patents
A kind of well cementation curable preposition liquid system and preparation method thereof Download PDFInfo
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- CN110257037A CN110257037A CN201910576079.5A CN201910576079A CN110257037A CN 110257037 A CN110257037 A CN 110257037A CN 201910576079 A CN201910576079 A CN 201910576079A CN 110257037 A CN110257037 A CN 110257037A
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- parts
- agent
- drilling fluid
- curable
- activator
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- 239000007788 liquid Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 138
- 238000005553 drilling Methods 0.000 claims abstract description 110
- 239000012190 activator Substances 0.000 claims abstract description 68
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 68
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 67
- 239000002270 dispersing agent Substances 0.000 claims abstract description 67
- 239000003381 stabilizer Substances 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000002893 slag Substances 0.000 claims abstract description 57
- -1 retarder Substances 0.000 claims abstract description 35
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 51
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 36
- 239000003818 cinder Substances 0.000 claims description 27
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 238000003756 stirring Methods 0.000 claims description 23
- 150000003839 salts Chemical class 0.000 claims description 21
- 229910021487 silica fume Inorganic materials 0.000 claims description 21
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 18
- 239000000292 calcium oxide Substances 0.000 claims description 18
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 18
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 18
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 16
- 239000011812 mixed powder Substances 0.000 claims description 16
- 239000004115 Sodium Silicate Substances 0.000 claims description 14
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 14
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 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 claims description 10
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 10
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 7
- 239000000194 fatty acid Substances 0.000 claims description 7
- 229930195729 fatty acid Natural products 0.000 claims description 7
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 6
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 6
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 6
- 229940008099 dimethicone Drugs 0.000 claims description 6
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 6
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 239000011975 tartaric acid Substances 0.000 claims description 6
- 235000002906 tartaric acid Nutrition 0.000 claims description 6
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 5
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 5
- MDFFNEOEWAXZRQ-UHFFFAOYSA-N aminyl Chemical compound [NH2] MDFFNEOEWAXZRQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000013530 defoamer Substances 0.000 claims description 5
- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 5
- 150000003751 zinc Chemical class 0.000 claims description 5
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 239000010452 phosphate Substances 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
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 230000004913 activation Effects 0.000 claims 1
- 150000001298 alcohols Chemical class 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims 1
- 239000011863 silicon-based powder Substances 0.000 claims 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims 1
- 229910001948 sodium oxide Inorganic materials 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 20
- 239000002002 slurry Substances 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 239000001488 sodium phosphate Substances 0.000 description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 description 3
- 230000000638 stimulation Effects 0.000 description 3
- 238000005829 trimerization reaction Methods 0.000 description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 3
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 2
- 238000006277 sulfonation reaction Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000374 eutectic mixture Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 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
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
-
- 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
- C09K8/5045—Compositions based on water or polar solvents containing inorganic compounds
-
- 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
-
- 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
-
- 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
- C09K8/5086—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
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)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a kind of well cementation curable preposition liquid systems and preparation method thereof, the preposition liquid system is made of slag, drilling fluid, activator, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water, wherein each component parts by weight are as follows: 100 parts of slag, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent, 0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.Density of the present invention is 1.25~1.65g/cm3Solidification intensity is high, rheological property is good, without Free water and system stability it is good, the curable prepad fluid of the present invention is used to replace the not curable drilling fluid in the part, even if the part prepad fluid cannot be replaced completely in annular space by cement slurry when well cementation, still can be self-curing by certain time, solve the problems, such as the long term seal of full well section in later period production process.
Description
Technical field
The invention belongs to oil gas well cementing operation prepad fluid technical field more particularly to a kind of curable preposition liquid of well cementation
System and preparation method thereof.
Background technique
Changqing oilfields belong to typical " low pressure, hypotonic, low abundance " three low oil gas fields, and it is easy to be drilled during well that there are low pressure
Certain challenge is proposed to well shaft fixing technology and mortar architecture when drop ply, especially well cementing operation.But Oilfield Company is after meeting
The purpose of phase underground well stimulation and pit shaft long-term effectiveness, well cementing operation will carry out full well section sealing.It is returned to solve cement
High inadequate problem, generally meets Oilfield Company using the mode of the density or fraclional well cementing that reduce mortar architecture
It is required that.On the other hand: the technical need of low permeability oil and gas field underground well stimulation (will carry out large-scale to payzone when completion practice
Fracturing reform operation), the pressure integrity of pit shaft is put forward higher requirements, payzone well cementation does not allow using stage well cementing tool
(there are pressure weak spots for itself, destroy the pressure integrity of entire production casing).
To meet the needs of underground well stimulation, it is ensured that the pressure integrity of entire production casing (does not allow using classification
Well shaft fixing technology), well cementing operation is carried out using the density for reducing mortar architecture, since the presence on low-pressure stratum cannot reach complete
The purpose of pit shaft sealing.For this problem, when Oilfield Company engineering design at present, requires to return on cement slurry a certain to stratum
Depth or missing part carry out well head backfill.Therefore, there is the brill that a part cannot be replaced by cement slurry completely in annular space
The problems such as well liquid, which has corrosion casing, pollute stratum is the safety of the Life cycle of later period entire pit shaft
Property buried certain hidden danger, and there are no the open prepad fluids that can solidify well cementation in the prior art.It is therefore desirable to grind
A kind of curable Cementing system is studied carefully to replace the not curable drilling fluid in the part, solves problem above.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, provide a kind of well cementation curable preposition liquid system
And preparation method thereof, it overcomes in the prior art 1: well cementing operation being carried out using the density for reducing mortar architecture, due to low pressure
The presence on power stratum cannot achieve the purpose that full pit shaft sealing；2: well head backfill causes in annular space there are a part cannot quilt completely
The problems such as drilling fluid that cement slurry replaces, which has corrosion casing, pollute stratum is later period entire pit shaft
Certain hidden danger has been buried in the safety of Life cycle；3: in the prior art there are no the prepad fluid that can solidify well cementation etc.
Problem.
In order to solve technical problem, the technical scheme is that a kind of curable preposition liquid system of well cementation, before described
Liquid system is set to be made of slag, drilling fluid, activator, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water, wherein
The parts by weight of each component are as follows: 100 parts of slag, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, stabilizer 5
~10 parts, 0.4~1.2 part of dispersing agent, 0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 5~8 parts of activator, increases 40~50 parts of drilling fluid
Strong 2~4 parts of agent, 5~8 parts of stabilizer, 0.5~1 part of dispersing agent, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, water 35
~50 parts.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water.
Preferably, the slag is blast-furnace cinder, and wherein the specific surface area of blast-furnace cinder is 200~500m2/kg。
Preferably, the drilling fluid is water-base drilling fluid, and wherein water-base drilling fluid can be selected from sulphonated polymer mud or complex salt
Drilling fluid.
Preferably, the activator is made of sodium hydroxide, sodium carbonate and calcium oxide, wherein sodium hydroxide, sodium carbonate and
The weight ratio of calcium oxide is 1~10:1~5:1~10.
Preferably, the reinforcing agent is made of sodium metasilicate and aluminum sulfate, and wherein the weight ratio of sodium metasilicate and aluminum sulfate is 1:5
~5:1.
Preferably, the stabilizer is SILICA FUME, and wherein the average grain diameter of SILICA FUME is 0.15~20 μm, wherein SILICA FUME
Specific surface area be 15000~20000m2/kg。
Preferably, the dispersing agent is selected from sodium lignin sulfonate, calcium lignosulfonate, sodium metnylene bis-naphthalene sulfonate, trimerization
One of sodium phosphate or calgon are a variety of, and the retarder is selected from citric acid, tartaric acid and its salt, zinc salt, phosphoric acid
One of salt is a variety of, and the defoaming agent is selected from dimethicone, organic silicon defoamer, silicone emulsion, high-carbon polyol fatty acid
Ester complexes, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether or polyoxy
One of propylene is a variety of.
Preferably, the preparation method of a kind of as above described in any item curable preposition liquid systems of cementing the well, including it is following
Step:
Step 1) prepares activator and reinforcing agent；
Step 2) weighs 100 parts of slag, 35~60 parts of drilling fluid, 3~10 parts of activator, reinforcing agent according to parts by weight respectively
2~5 parts, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent, 0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, water 30
~60 parts；
Step 3) is by 100 parts of slag, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, dispersing agent 0.4
~1.2 parts are made mixed powder with 0.1~0.5 part of mixing of retarder；
Step 4) by 35~60 parts of drilling fluid, 0.1~0.5 part of defoaming agent and 30~60 parts of water be put into blender with
The speed of 4000r/min is stirred, and mixed liquor is made in stirring；
Step 3) the mixed powder is at the uniform velocity added in the step 4) mixed liquor step 5) in 15s, then covers
Blender top cover continues to stir 35s with the speed of 12000r/min, completes the preparation of the curable preposition liquid system of well cementation.
Compared with the existing technology, the present invention has the advantages that
(1) of the invention by slag, drilling fluid, activator, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water
Curable prepad fluid of cementing the well is made in mixture by a certain percentage, and the curable prepad fluid of present invention well cementation, which is used for replacement, to be solidified
Drilling fluid, the well cementation with curable prepad fluid solidify after play the role of annular space sealing, even if well cementation when the part it is preposition
Liquid cannot be converted completely by cement slurry, still itself can solidify by certain time, reach mesh identical with cement slurry sealing
, solidification intensity is high, and compression strength is big；
(2) present invention well cementation has good rheological property with curable prepad fluid during constructing work, can be with cement
Slurry and drilling fluid have good intermiscibility, with cement slurry and drilling fluid after different proportion mix stable system, cement the well with can consolidate
Changing can be self-curing after prepad fluid replaces, and achievees the purpose that full well sealing, solves in well cementing process due to annular pressure lost
Greatly, Formation bearing pressure is low, cement slurry cannot completely sealing annular space the problem of；
(3) present invention well cementation can be solidified with curable prepad fluid by certain time itself, avoid corrosion casing, dirty
The problems such as contaminating stratum, reduces corrosion, extends the oil well service life, economic benefit is inestimable；
(4) present invention well cementation be available locally with curable prepad fluid material therefor, be finished well drilling fluid carry out prepare can
Solidify preposition liquid system, at low cost, on-site maintenance is easy to operate, the preparation method letter of the curable prepad fluid of present invention well cementation
Just, it is conducive to realize.
Specific embodiment
The specific embodiment of the invention is described below with reference to embodiment:
It should be noted that structure, ratio, size etc. that this specification is illustrated, only to cooperate specification to be taken off
The content shown is not intended to limit the invention enforceable qualifications, appoints so that those skilled in the art understands and reads
What modification of structure, the change of proportionate relationship or adjustment of size, is not influencing the effect of present invention can be generated and can reach
At purpose under, should all still fall in the range of disclosed technology contents can cover.
Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, also
Only being illustrated convenient for narration, rather than to limit the scope of the invention, relativeness is altered or modified, in nothing
Under essence change technology contents, when being also considered as the enforceable scope of the present invention.
Blast-furnace cinder of the present invention, sulphonated polymer mud, Double Salt Drilling Fluid, sodium hydroxide, sodium carbonate, calcium oxide, silicon
Sour sodium, aluminum sulfate, SILICA FUME, quality sodium sulfonate, calcium lignosulfonate, sodium metnylene bis-naphthalene sulfonate, sodium tripolyphosphate, six inclined phosphorus
Sour sodium, citric acid, tartaric acid and its salt, zinc salt, phosphate, dimethicone, organic silicon defoamer, silicone emulsion, higher alcohols
Fatty acid ester compounded object, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether
Or polyoxypropylene is commercial products.
A kind of waste residue that the blast-furnace cinder is discharged from blast furnace when being manUfaCtUre of pig iron is a kind of eutectic mixture, can adopt
The valuable materials to serve many purposes are processed into kinds of processes.
Sulphonated polymer mud is usually that polymer, three semi-annular jade pendant systems, including sulfonation tannin (SMT) are introduced in water-base drilling fluid,
Sulfonation burned (SMK) and sulfonated phenol formaldehyde resin (SMP), to improve drilling fluid high-temperature resisting and salt-resisting performance.
Double Salt Drilling Fluid has high specific gravity, low viscosity, low dehydration, low solid phase, good mud cake quality, strong inhibition
Etc. characteristics.
SILICA FUME is also silicon ash or cohesion silicon ash, is ferroalloy in smelting duriron and industrial silicon (metallic silicon), mine heat
The very strong SiO of a large amount of volatility is produced in electric furnace2With Si gas, gas discharge after with air rapid oxidation condense precipitating and
At, it is the by-product during big industry is smelted, and whole process needs to be recycled with dedusting environment friendly equipment, because density is smaller,
It also needs to be encrypted with encryption equipment.
Every part of parts by weight of following embodiment is 100g.
Embodiment 1
The invention discloses a kind of curable preposition liquid system of well cementation, the preposition liquid system by slag, drilling fluid, swash
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water living form, wherein the parts by weight of each component are as follows: slag 100
Part, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent,
0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Embodiment 2
The invention discloses a kind of curable preposition liquid system of well cementation, the preposition liquid system by slag, drilling fluid, swash
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water living form, wherein the parts by weight of each component are as follows: slag 100
Part, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent,
0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 5~8 parts of activator, increases 40~50 parts of drilling fluid
Strong 2~4 parts of agent, 5~8 parts of stabilizer, 0.5~1 part of dispersing agent, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, water 35
~50 parts.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water.
Embodiment 3
The invention discloses a kind of curable preposition liquid system of well cementation, the preposition liquid system by slag, drilling fluid, swash
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water living form, wherein the parts by weight of each component are as follows: slag 100
Part, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent,
0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 5~8 parts of activator, increases 40~50 parts of drilling fluid
Strong 2~4 parts of agent, 5~8 parts of stabilizer, 0.5~1 part of dispersing agent, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, water 35
~50 parts.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water.
Preferably, the slag is blast-furnace cinder, and wherein the specific surface area of blast-furnace cinder is 200~500m2/kg。
Embodiment 4
The invention discloses a kind of curable preposition liquid system of well cementation, the preposition liquid system by slag, drilling fluid, swash
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water living form, wherein the parts by weight of each component are as follows: slag 100
Part, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent,
0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 5~8 parts of activator, increases 40~50 parts of drilling fluid
Strong 2~4 parts of agent, 5~8 parts of stabilizer, 0.5~1 part of dispersing agent, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, water 35
~50 parts.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water.
Preferably, the slag is blast-furnace cinder, and wherein the specific surface area of blast-furnace cinder is 200~500m2/kg。
Preferably, the drilling fluid is water-base drilling fluid, and wherein water-base drilling fluid can be selected from sulphonated polymer mud or complex salt
Drilling fluid.
Embodiment 5
The invention discloses a kind of curable preposition liquid system of well cementation, the preposition liquid system by slag, drilling fluid, swash
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water living form, wherein the parts by weight of each component are as follows: slag 100
Part, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent,
0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 5~8 parts of activator, increases 40~50 parts of drilling fluid
Strong 2~4 parts of agent, 5~8 parts of stabilizer, 0.5~1 part of dispersing agent, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, water 35
~50 parts.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water.
Preferably, the slag is blast-furnace cinder, and wherein the specific surface area of blast-furnace cinder is 200~500m2/kg。
Preferably, the drilling fluid is water-base drilling fluid, and wherein water-base drilling fluid can be selected from sulphonated polymer mud or complex salt
Drilling fluid.
Preferably, the activator is made of sodium hydroxide, sodium carbonate and calcium oxide, wherein sodium hydroxide, sodium carbonate and
The weight ratio of calcium oxide is 1~10:1~5:1~10.
Embodiment 6
The invention discloses a kind of curable preposition liquid system of well cementation, the preposition liquid system by slag, drilling fluid, swash
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water living form, wherein the parts by weight of each component are as follows: slag 100
Part, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent,
0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 5~8 parts of activator, increases 40~50 parts of drilling fluid
Strong 2~4 parts of agent, 5~8 parts of stabilizer, 0.5~1 part of dispersing agent, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, water 35
~50 parts.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water.
Preferably, the slag is blast-furnace cinder, and wherein the specific surface area of blast-furnace cinder is 200~500m2/kg。
Preferably, the drilling fluid is water-base drilling fluid, and wherein water-base drilling fluid can be selected from sulphonated polymer mud or complex salt
Drilling fluid.
Preferably, the activator is made of sodium hydroxide, sodium carbonate and calcium oxide, wherein sodium hydroxide, sodium carbonate and
The weight ratio of calcium oxide is 1~10:1~5:1~10.
Preferably, the reinforcing agent is made of sodium metasilicate and aluminum sulfate, and wherein the weight ratio of sodium metasilicate and aluminum sulfate is 1:5
~5:1.
Preferably, the stabilizer is SILICA FUME, and wherein the average grain diameter of SILICA FUME is 0.15~20 μm, wherein SILICA FUME
Specific surface area be 15000~20000m2/kg。
Embodiment 7
The invention discloses a kind of curable preposition liquid system of well cementation, the preposition liquid system by slag, drilling fluid, swash
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water living form, wherein the parts by weight of each component are as follows: slag 100
Part, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent,
0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 5~8 parts of activator, increases 40~50 parts of drilling fluid
Strong 2~4 parts of agent, 5~8 parts of stabilizer, 0.5~1 part of dispersing agent, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, water 35
~50 parts.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water.
Preferably, the slag is blast-furnace cinder, and wherein the specific surface area of blast-furnace cinder is 200~500m2/kg。
Preferably, the drilling fluid is water-base drilling fluid, and wherein water-base drilling fluid can be selected from sulphonated polymer mud or complex salt
Drilling fluid.
Preferably, the activator is made of sodium hydroxide, sodium carbonate and calcium oxide, wherein sodium hydroxide, sodium carbonate and
The weight ratio of calcium oxide is 1~10:1~5:1~10.
Preferably, the reinforcing agent is made of sodium metasilicate and aluminum sulfate, and wherein the weight ratio of sodium metasilicate and aluminum sulfate is 1:5
~5:1.
Preferably, the stabilizer is SILICA FUME, and wherein the average grain diameter of SILICA FUME is 0.15~20 μm, wherein SILICA FUME
Specific surface area be 15000~20000m2/kg。
Preferably, the dispersing agent is selected from sodium lignin sulfonate, calcium lignosulfonate, sodium metnylene bis-naphthalene sulfonate, trimerization
One of sodium phosphate or calgon are a variety of, and the retarder is selected from citric acid, tartaric acid and its salt, zinc salt, phosphoric acid
One of salt is a variety of, and the defoaming agent is selected from dimethicone, organic silicon defoamer, silicone emulsion, high-carbon polyol fatty acid
Ester complexes, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether or polyoxy
One of propylene is a variety of.
Embodiment 8
The invention discloses a kind of curable preposition liquid system of well cementation, the preposition liquid system by slag, drilling fluid, swash
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water living form, wherein the parts by weight of each component are as follows: slag 100
Part, 35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent,
0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 5~8 parts of activator, increases 40~50 parts of drilling fluid
Strong 2~4 parts of agent, 5~8 parts of stabilizer, 0.5~1 part of dispersing agent, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, water 35
~50 parts.
Preferably, the parts by weight of each component are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water.
Preferably, the slag is blast-furnace cinder, and wherein the specific surface area of blast-furnace cinder is 200~500m2/kg。
Preferably, the drilling fluid is water-base drilling fluid, and wherein water-base drilling fluid can be selected from sulphonated polymer mud or complex salt
Drilling fluid.
Preferably, the activator is made of sodium hydroxide, sodium carbonate and calcium oxide, wherein sodium hydroxide, sodium carbonate and
The weight ratio of calcium oxide is 1~10:1~5:1~10.
Preferably, the reinforcing agent is made of sodium metasilicate and aluminum sulfate, and wherein the weight ratio of sodium metasilicate and aluminum sulfate is 1:5
~5:1.
Preferably, the stabilizer is SILICA FUME, and wherein the average grain diameter of SILICA FUME is 0.15~20 μm, wherein SILICA FUME
Specific surface area be 15000~20000m2/kg。
Preferably, the dispersing agent is selected from sodium lignin sulfonate, calcium lignosulfonate, sodium metnylene bis-naphthalene sulfonate, trimerization
One of sodium phosphate or calgon are a variety of, and the retarder is selected from citric acid, tartaric acid and its salt, zinc salt, phosphoric acid
One of salt is a variety of, and the defoaming agent is selected from dimethicone, organic silicon defoamer, silicone emulsion, high-carbon polyol fatty acid
Ester complexes, polyoxyethylene polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether or polyoxy
One of propylene is a variety of.
Preferably, the preparation method of a kind of as above described in any item curable preposition liquid systems of cementing the well, including it is following
Step:
Step 1) prepares activator and reinforcing agent；
Step 2) weighs 100 parts of slag, 35~60 parts of drilling fluid, 3~10 parts of activator, reinforcing agent according to parts by weight respectively
2~5 parts, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent, 0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, water 30
~60 parts；
Step 3) is by 100 parts of slag, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, dispersing agent 0.4
~1.2 parts are made mixed powder with 0.1~0.5 part of mixing of retarder；
Step 4) by 35~60 parts of drilling fluid, 0.1~0.5 part of defoaming agent and 30~60 parts of water be put into blender with
The speed of 4000r/min is stirred, and mixed liquor is made in stirring；
Step 3) the mixed powder is at the uniform velocity added in the step 4) mixed liquor step 5) in 15s, then covers
Blender top cover continues to stir 35s with the speed of 12000r/min, completes the preparation of the curable preposition liquid system of well cementation.
Embodiment 9
Step 1) prepares activator and reinforcing agent, wherein in activator sodium hydroxide, sodium carbonate and calcium oxide weight ratio
For 1:1:1, the weight ratio of sodium metasilicate and aluminum sulfate is 1:5 in reinforcing agent, and wherein drilling fluid is selected from sulphonated polymer mud, stabilizer choosing
From SILICA FUME, dispersing agent is selected from sodium lignin sulfonate, and retarder is selected from citric acid, and defoaming agent is selected from dimethicone；
Step 2) weighs 100 parts of blast-furnace cinder, 60 parts of drilling fluid, 10 parts of activator, reinforcing agent 5 according to parts by weight respectively
Part, 5 parts of stabilizer, 0.4 part of dispersing agent, 0.1 part of retarder, 0.5 part of defoaming agent, 60 parts of water；
Step 3) eases up 100 parts of blast-furnace cinder, 10 parts of activator, 5 parts of reinforcing agent, 5 parts of stabilizer, 0.4 part of dispersing agent
Mixed powder is made in solidifying 0.1 part of mixing of agent；
Step 4) by 60 parts of drilling fluid, 0.5 part of defoaming agent and 60 parts of water be put into blender with the speed of 4000r/min into
Mixed liquor is made in row stirring, stirring；
Step 3) the mixed powder is at the uniform velocity added in the step 4) mixed liquor step 5) in 15s, then covers
Blender top cover continues to stir 35s with the speed of 12000r/min, completes the preparation of the curable preposition liquid system of well cementation.
Embodiment 10
Step 1) prepares activator and reinforcing agent, wherein in activator sodium hydroxide, sodium carbonate and calcium oxide weight ratio
For 10:1:10, the weight ratio of sodium metasilicate and aluminum sulfate is 5:1 in reinforcing agent, and wherein drilling fluid is selected from Double Salt Drilling Fluid, is stablized
Agent is selected from SILICA FUME, and dispersing agent is selected from calcium lignosulfonate, and retarder is selected from tartaric acid and its salt, and defoaming agent disappears selected from organosilicon
Infusion；
Step 2) weighed respectively according to parts by weight 100 parts of blast-furnace cinder, 50 parts of drilling fluid, 3 parts of activator, 2 parts of reinforcing agent,
10 parts of stabilizer, 1.2 parts of dispersing agent, 0.5 part of retarder, 0.1 part of defoaming agent, 50 parts of water；
Step 3) eases up 100 parts of blast-furnace cinder, 3 parts of activator, 2 parts of reinforcing agent, 10 parts of stabilizer, 1.2 parts of dispersing agent
Mixed powder is made in solidifying 0.5 part of mixing of agent；
Step 4) by 50 parts of drilling fluid, 0.1 part of defoaming agent and 50 parts of water be put into blender with the speed of 4000r/min into
Mixed liquor is made in row stirring, stirring；
Step 3) the mixed powder is at the uniform velocity added in the step 4) mixed liquor step 5) in 15s, then covers
Blender top cover continues to stir 35s with the speed of 12000r/min, completes the preparation of the curable preposition liquid system of well cementation.
Embodiment 11
Step 1) prepares activator and reinforcing agent, wherein in activator sodium hydroxide, sodium carbonate and calcium oxide weight ratio
For 1:5:1, the weight ratio of sodium metasilicate and aluminum sulfate is 1:1 in reinforcing agent, and wherein drilling fluid is selected from sulphonated polymer mud, stabilizer choosing
From SILICA FUME, dispersing agent is selected from sodium metnylene bis-naphthalene sulfonate, and retarder is selected from zinc salt, and defoaming agent is selected from silicone emulsion；
Step 2) weighed respectively according to parts by weight 100 parts of blast-furnace cinder, 45 parts of drilling fluid, 8 parts of activator, 4 parts of reinforcing agent,
8 parts of stabilizer, 0.5 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 40 parts of water；
Step 3) is by 100 parts of blast-furnace cinder, 8 parts of activator, 4 parts of reinforcing agent, 8 parts of stabilizer, 0.5 part of dispersing agent and slow setting
Mixed powder is made in 0.3 part of mixing of agent；
Step 4) by 45 parts of drilling fluid, 0.4 part of defoaming agent and 40 parts of water be put into blender with the speed of 4000r/min into
Mixed liquor is made in row stirring, stirring；
Step 3) the mixed powder is at the uniform velocity added in the step 4) mixed liquor step 5) in 15s, then covers
Blender top cover continues to stir 35s with the speed of 12000r/min, completes the preparation of the curable preposition liquid system of well cementation.
Embodiment 12
Step 1) prepares activator and reinforcing agent, wherein in activator sodium hydroxide, sodium carbonate and calcium oxide weight ratio
For 10:5:1, the weight ratio of sodium metasilicate and aluminum sulfate is 1:2 in reinforcing agent, and wherein drilling fluid is selected from Double Salt Drilling Fluid, is stablized
Agent is selected from SILICA FUME, and dispersing agent is selected from sodium tripolyphosphate, and retarder is selected from phosphate, and defoaming agent is multiple selected from high-carbon alcohol fatty acid ester
Close object；
Step 2) weighed respectively according to parts by weight 100 parts of blast-furnace cinder, 40 parts of drilling fluid, 5 parts of activator, 5 parts of reinforcing agent,
5 parts of stabilizer, 1 part of dispersing agent, 0.1 part of retarder, 0.3 part of defoaming agent, 35 parts of water；
Step 3) is by 100 parts of blast-furnace cinder, 5 parts of activator, 5 parts of reinforcing agent, 5 parts of stabilizer, 1 part of dispersing agent and retarder
Mixed powder is made in 0.1 part of mixing；
Step 4) by 40 parts of drilling fluid, 0.3 part of defoaming agent and 35 parts of water be put into blender with the speed of 4000r/min into
Mixed liquor is made in row stirring, stirring；
Step 3) the mixed powder is at the uniform velocity added in the step 4) mixed liquor step 5) in 15s, then covers
Blender top cover continues to stir 35s with the speed of 12000r/min, completes the preparation of the curable preposition liquid system of well cementation.
Embodiment 13
Step 1) prepares activator and reinforcing agent, wherein in activator sodium hydroxide, sodium carbonate and calcium oxide weight ratio
For 10:5:1, the weight ratio of sodium metasilicate and aluminum sulfate is 1:2 in reinforcing agent, and wherein drilling fluid is selected from Double Salt Drilling Fluid, is stablized
Agent is selected from SILICA FUME, and dispersing agent is selected from sodium tripolyphosphate, and retarder is selected from phosphate, and defoaming agent is multiple selected from high-carbon alcohol fatty acid ester
Close object；
Step 2) weighed respectively according to parts by weight 100 parts of blast-furnace cinder, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent,
6 parts of stabilizer, 0.8 part of dispersing agent, 0.3 part of retarder, 0.4 part of defoaming agent, 30 parts of water；
Step 3) is by 100 parts of blast-furnace cinder, 6 parts of activator, 3 parts of reinforcing agent, 6 parts of stabilizer, 0.8 part of dispersing agent and slow setting
Mixed powder is made in 0.3 part of mixing of agent；
Step 4) by 45 parts of drilling fluid, 0.4 part of defoaming agent and 30 parts of water be put into blender with the speed of 4000r/min into
Mixed liquor is made in row stirring, stirring；
Step 3) the mixed powder is at the uniform velocity added in the step 4) mixed liquor step 5) in 15s, then covers
Blender top cover continues to stir 35s with the speed of 12000r/min, completes the preparation of the curable preposition liquid system of well cementation.
The well cementation of above-described embodiment 9~13 is specifically shown in Table 1,2 with the performance test results of curable prepad fluid:
The performance test parameter of the curable prepad fluid of 1 embodiment 9~13 of table well cementation
The well cementation of 2 embodiment 9~13 of table tests table with drilling fluid, cement slurry intermiscibility respectively with curable prepad fluid
Sedimentation stability data in table 1 are tested by sedimentation stability, wherein sedimentation stability test be by
The well cementation of embodiment 9~13 with curable prepad fluid normal pressure multiviscosity meter stir 30min after in 500ml graduated cylinder stand 2h after,
Measure top and lower part cement slurry density difference.
Other experimental datas in table 1, table 2 are obtained by common method in the prior art, and the application repeats no more.
As shown in Table 1, present invention well cementation is functional with curable prepad fluid system, and density is in 1.25~1.65g/
cm3Between, there is good mobility, be conducive to site operation, no Free water, fluid loss is few, and sedimentation stability is good, and
Site operation 48h can effectively insulate stratum, and compression strength is all larger than 5.0MPa, reach as high as 8.6MPa, after 168h
Compressive strength of solidified body can achieve the function of cement sealing, and compression strength is all larger than 6.3MPa, reach as high as 10.3MPa.
As can be seen from Table 2, the present invention curable preposition liquid system of well cementation and cement slurry and drilling fluid intermiscibility are good,
Stable system after different proportion mixing, fluid ability are good.
Slag, drilling fluid, activator, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water are pressed one by the present invention
Curable prepad fluid of cementing the well is made in certainty ratio mixture, and present invention well cementation is used to replace not curable brill with curable prepad fluid
Well liquid, the well cementation play the role of annular space sealing after being solidified with curable prepad fluid, even if the part prepad fluid is not in well cementation
It can be converted completely by cement slurry, still itself can solidify by certain time, reach purpose identical with cement slurry sealing, Gu
It is high to change intensity, compression strength is big.
The present invention well cementation during constructing work, has good rheological property with curable prepad fluid, can be with cement slurry
Have good intermiscibility with drilling fluid, with cement slurry and drilling fluid after different proportion mixes stable system, well cementation is with curable
Prepad fluid can be self-curing after replacing, and achievees the purpose that full well sealing, solve in well cementing process due to annular pressure lost is big,
Formation bearing pressure is low, cement slurry cannot completely sealing annular space the problem of；
Present invention well cementation can be solidified with curable prepad fluid by certain time itself, avoid corrosion casing, be polluted
The problems such as stratum, reduces corrosion, extends the oil well service life, and economic benefit is inestimable；
The present invention well cementation be available locally with curable prepad fluid material therefor, be finished well drilling fluid prepare it is curable
Preposition liquid system, at low cost, on-site maintenance is easy to operate, and the preparation method of the curable prepad fluid of present invention well cementation is easy, benefit
In realization.
The preferred embodiment for the present invention is explained in detail above, but the present invention is not limited to the above embodiments,
Those of ordinary skill in the art within the scope of knowledge, can also make various without departing from the purpose of the present invention
Variation.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.Reagent involved in above-mentioned can be from city
It is bought on.
Claims (10)
1. a kind of curable preposition liquid system of well cementation, it is characterised in that: the preposition liquid system is by slag, drilling fluid, activation
Agent, reinforcing agent, stabilizer, dispersing agent, retarder, defoaming agent and water form, wherein the parts by weight of each component are as follows: 100 parts of slag,
35~60 parts of drilling fluid, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent, slow setting
0.1~0.5 part of agent, 0.1~0.5 part of defoaming agent, 30~60 parts of water.
2. a kind of curable preposition liquid system of well cementation according to claim 1, it is characterised in that: the weight of each component
Measure part are as follows: 100 parts of slag, 40~50 parts of drilling fluid, 5~8 parts of activator, 2~4 parts of reinforcing agent, 5~8 parts of stabilizer, dispersing agent
0.5~1 part, 0.1~0.3 part of retarder, 0.1~0.4 part of defoaming agent, 35~50 parts of water.
3. a kind of curable preposition liquid system of well cementation according to claim 2, it is characterised in that: the weight of each component
Measure part are as follows: 100 parts of slag, 45 parts of drilling fluid, 6 parts of activator, 3 parts of reinforcing agent, 6 parts of stabilizer, 0.8 part of dispersing agent, retarder
0.3 part, 0.4 part of defoaming agent, 30 parts of water.
4. a kind of curable preposition liquid system of well cementation according to claim 3, it is characterised in that: the slag is blast furnace
Slag, wherein the specific surface area of blast-furnace cinder is 200~500m2/kg。
5. a kind of curable preposition liquid system of well cementation according to claim 3, it is characterised in that: the drilling fluid is water
Base drilling fluid, wherein water-base drilling fluid can be selected from sulphonated polymer mud or Double Salt Drilling Fluid.
6. a kind of curable preposition liquid system of well cementation according to claim 3, it is characterised in that: the activator is by hydrogen
Sodium oxide molybdena, sodium carbonate and calcium oxide composition, wherein the weight ratio of sodium hydroxide, sodium carbonate and calcium oxide be 1~10:1~5:1~
10。
7. a kind of curable preposition liquid system of well cementation according to claim 3, it is characterised in that: the reinforcing agent is by silicon
Sour sodium and aluminum sulfate composition, wherein the weight ratio of sodium metasilicate and aluminum sulfate is 1:5~5:1.
8. a kind of curable preposition liquid system of well cementation according to claim 3, it is characterised in that: the stabilizer is micro-
Silicon powder, wherein the average grain diameter of SILICA FUME is 0.15~20 μm, and wherein the specific surface area of SILICA FUME is 15000~20000m2/
kg。
9. a kind of curable preposition liquid system of well cementation according to claim 3, it is characterised in that: the dispersing agent is selected from
One of sodium lignin sulfonate, calcium lignosulfonate, sodium metnylene bis-naphthalene sulfonate, sodium tripolyphosphate or calgon are more
Kind, the retarder is selected from one of citric acid, tartaric acid and its salt, zinc salt, phosphate or a variety of, and the defoaming agent is selected from
The fatty acid ester compounded object of dimethicone, organic silicon defoamer, silicone emulsion, higher alcohols, polyoxyethylene polyoxypropylene Ji Wusi
One of alcohol ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether or polyoxypropylene are a variety of.
10. a kind of preparation method of curable preposition liquid system as described in any one of claims 1 to 9 of cementing the well, feature
It is, comprising the following steps:
Step 1) prepares activator and reinforcing agent；
Step 2) weighs 100 parts of slag, 35~60 parts of drilling fluid, 3~10 parts of activator, reinforcing agent 2~5 according to parts by weight respectively
Part, 5~10 parts of stabilizer, 0.4~1.2 part of dispersing agent, 0.1~0.5 part of retarder, 0.1~0.5 part of defoaming agent, water 30~60
Part；
Step 3) is by 100 parts of slag, 3~10 parts of activator, 2~5 parts of reinforcing agent, 5~10 parts of stabilizer, dispersing agent 0.4~1.2
Mixed powder is made in part and 0.1~0.5 part of mixing of retarder；
35~60 parts of drilling fluid, 0.1~0.5 part of defoaming agent and 30~60 parts of water are put into blender with 4000r/ by step 4)
The speed of min is stirred, and mixed liquor is made in stirring；
Step 3) the mixed powder is at the uniform velocity added in the step 4) mixed liquor step 5) in 15s, then covers stirring
Device top cover continues to stir 35s with the speed of 12000r/min, completes the preparation of the curable preposition liquid system of well cementation.
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Effective date of registration: 20201203 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Applicant after: CHINA NATIONAL PETROLEUM Corp. Applicant after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: 710018 Shaanxi city of Xi'an province Weiyang District four road Fengcheng Changqing Technology Building Applicant before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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Application publication date: 20190920 |