CN117700186B - Underwater non-dispersed cement paste for drilling and preparation method thereof - Google Patents
Underwater non-dispersed cement paste for drilling and preparation method thereof Download PDFInfo
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- CN117700186B CN117700186B CN202410167672.5A CN202410167672A CN117700186B CN 117700186 B CN117700186 B CN 117700186B CN 202410167672 A CN202410167672 A CN 202410167672A CN 117700186 B CN117700186 B CN 117700186B
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- 239000004568 cement Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 238000005553 drilling Methods 0.000 title claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 106
- 238000002156 mixing Methods 0.000 claims abstract description 75
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 46
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 46
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 43
- 239000003607 modifier Substances 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000002002 slurry Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010881 fly ash Substances 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims abstract description 11
- 239000011398 Portland cement Substances 0.000 claims abstract description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 39
- 238000003756 stirring Methods 0.000 claims description 27
- 238000001035 drying Methods 0.000 claims description 23
- 238000000498 ball milling Methods 0.000 claims description 22
- 239000012286 potassium permanganate Substances 0.000 claims description 19
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- 239000004115 Sodium Silicate Substances 0.000 claims description 13
- 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 13
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 claims description 13
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 13
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 13
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 13
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 230000002844 continuous effect Effects 0.000 claims description 11
- 238000000967 suction filtration Methods 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- 229910052588 hydroxylapatite Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 claims description 10
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims description 9
- 229920001661 Chitosan Polymers 0.000 claims description 9
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 9
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- IRLPACMLTUPBCL-KQYNXXCUSA-N 5'-adenylyl sulfate Chemical group C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OS(O)(=O)=O)[C@@H](O)[C@H]1O IRLPACMLTUPBCL-KQYNXXCUSA-N 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 125000003158 alcohol group Chemical group 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 239000003513 alkali Substances 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 239000003469 silicate cement Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 12
- 229960004275 glycolic acid Drugs 0.000 description 8
- 238000005496 tempering Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000003389 potentiating effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Dental Preparations (AREA)
Abstract
The invention relates to the technical field of cement paste, and in particular discloses underwater undispersed cement paste for drilling and a preparation method thereof, wherein the underwater undispersed cement paste comprises the following raw materials in parts by weight: 50-55 parts of Portland cement, 10-15 parts of blast furnace slag, 8-14 parts of fly ash, 7-11 parts of blending and continuous acting agent, 4-7 parts of compatibilizer, 3-5 parts of fluid loss agent, 45-50 parts of water and 3-6 parts of nano silicon dioxide modifier. The underwater undispersed cement slurry is prepared by mixing silicate cement with blast furnace slag and fly ash, mixing with a compatibilizer and a fluid loss additive, and simultaneously combining with a mixing and linking agent and a nano silicon dioxide modifier to obtain a product with the advantages of improved cement slurry strength and quick setting effect, and obvious saline-alkali resistance and stability.
Description
Technical Field
The invention relates to the technical field of cement paste, in particular to underwater undispersed cement paste for drilling and a preparation method thereof.
Background
Along with the transition of world energy from conventional oil and gas exploration to unconventional oil and gas exploration, shale gas and other unconventional oil and gas are receiving more and more attention; therefore, the application of drilling is developed, the method is commonly used for plugging cement paste in drilling, but the existing cement paste has poor strength performance and difficult rapid hardening efficiency, and the coordinated improvement of the cement paste strength and the rapid hardening and the poor performance stability of products in saline-alkali environments are difficult to realize, so that the method is further improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide underwater undispersed cement paste for drilling and a preparation method thereof, so as to solve the problems in the prior art.
The invention solves the technical problems by adopting the following technical scheme:
the invention provides underwater non-dispersed cement paste for drilling, which comprises the following raw materials in parts by weight: 50-55 parts of Portland cement, 10-15 parts of blast furnace slag, 8-14 parts of fly ash, 7-11 parts of blending and continuous acting agent, 4-7 parts of compatibilizer, 3-5 parts of fluid loss agent, 45-50 parts of water and 3-6 parts of nano silicon dioxide modifier.
Preferably, the underwater undispersed cement slurry comprises the following raw materials in parts by weight: 52.5 parts of Portland cement, 12.5 parts of blast furnace slag, 11 parts of fly ash, 9 parts of blending and continuous acting agent, 5.5 parts of compatibilizer, 4 parts of filtrate reducer, 47.5 parts of water and 4.5 parts of nano silicon dioxide modifier.
Preferably, the fluid loss agent is an AMPS polymer; the compatibilizer is alcohol block polyether.
Preferably, the preparation method of the reconciliation and efficacy agent comprises the following steps:
S01: the silicon carbide whisker is sent into a sufficient amount of potassium permanganate solution to be stirred, washed and dried, then is subjected to heat treatment for 5-10min at 210-230 ℃, is cooled to 105-110 ℃ at a speed of 1-3 ℃/min, is kept for 10min, and is finally subjected to air cooling to room temperature;
s02: 3-6 parts by weight of platy talcum powder, 1-3 parts by weight of lanthanum chloride solution and 2-4 parts by weight of sodium silicate solution are blended, then 1-2 parts by weight of silane coupling agent KH560 is added, and stirring is carried out fully, thus obtaining a blending solution;
s03: and (3) carrying out ultrasonic blending treatment on the silicon carbide whisker and the blending liquid in the S01 according to the weight ratio of 2:5, wherein the ultrasonic power is 350-400W, the ultrasonic time is 1h, and after the treatment is finished, carrying out suction filtration and drying to obtain the blending continuous-effect agent.
Preferably, the stirring treatment in the potassium permanganate solution adopts 10% by mass of potassium permanganate solution to stir for 1h at a rotating speed of 1000-1500 r/min.
Preferably, the mass fraction of the lanthanum chloride solution is 2-5%; the mass fraction of the sodium silicate solution is 8-12%.
Preferably, the preparation method of the platy talcum powder comprises the following steps:
The method comprises the steps of firstly carrying out irradiation treatment on flaky talcum powder in a proton irradiation box, wherein the irradiation power is 400-450W, the irradiation is carried out for 25-30min, the irradiation is finished, 3-5 parts of irradiated flaky talcum powder, 1-2 parts of nano silica sol, 4-7 parts of chitosan solution with mass fraction of 5% and 1-3 parts of yttrium nitrate with mass fraction of 2% are subjected to blending ball milling treatment, the ball milling rotating speed is 1000-1500r/min, the ball milling is carried out for 1-2h, and the flaky talcum powder can be obtained after the ball milling is finished, the suction filtration and the drying are carried out.
Preferably, the preparation method of the nano silicon dioxide modifier comprises the following steps:
S101: stirring and mixing nano silicon dioxide in hydrochloric acid solution with mass fraction of 2% which is 3-5 times of the total amount of nano silicon dioxide, washing with water and drying;
S102: 3-5 parts of dried nano silicon dioxide, 4-7 parts of sodium lignin sulfonate solution, 1-2 parts of glycolic acid and 1-2 parts of hydroxyapatite are stirred and mixed uniformly, and finally the nano silicon dioxide modifier is obtained by washing and drying.
Preferably, the mass fraction of the sodium lignin sulfonate solution is 10-15%.
The invention also provides a preparation method of the underwater undispersed cement paste for drilling, which comprises the following steps:
Step one: weighing the raw materials:
step two: the raw materials are stirred and mixed uniformly in sequence, and the cement paste is obtained.
Compared with the prior art, the invention has the following beneficial effects:
The underwater undispersed cement slurry is prepared by mixing silicate cement with blast furnace slag and fly ash, mixing with a compatibilizer and a fluid loss additive, and simultaneously mixing with a mixing and linking agent and a nano silicon dioxide modifier to obtain a product with good cement slurry strength and quick setting effect, and good saline-alkali resistance and stability.
According to the application, the blending and coupling agent adopted in the underwater undispersed cement paste is stirred and treated by silicon carbide whisker in potassium permanganate solution, is matched with heat treatment for 5-10min at 210-230 ℃, is cooled to 105-110 ℃ at the speed of 1-3 ℃/min, is preserved for 10min, is finally cooled to room temperature, and optimizes the activity efficiency and dispersion efficiency of the whisker, meanwhile, the blending solution obtained by blending silane coupling agent KH560 with flaky talcum powder, lanthanum chloride solution and sodium silicate solution is matched, and the flaky talcum powder is subjected to proton irradiation by flaky talcum powder, and is subjected to blending modification by nanometer silica sol, chitosan solution and yttrium nitrate, and the modified flaky talcum powder is matched with whisker-like structures in a distribution system, so that the interfacial property of the raw materials of the system and the reaction effect between the raw materials are obviously improved, the strength and quick setting effect of the system product are enhanced, and the salt and alkali resistance stability of the product is optimized; and the nano silicon dioxide modifier is treated by hydrochloric acid solution and then is coordinated by sodium lignin sulfonate solution, glycolic acid and hydroxyapatite, so that the obtained nano silicon dioxide and the hydroxyapatite are coordinated together, the coordination effect of the nano silicon dioxide modifier and the blending and linking agent is more obvious, further the cement paste strength and quick setting effect of the product are further coordinated and improved, and the saline-alkali resistance stability effect of the product is obvious.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The underwater non-dispersed cement slurry for drilling in the embodiment comprises the following raw materials in parts by weight:
50-55 parts of Portland cement, 10-15 parts of blast furnace slag, 8-14 parts of fly ash, 7-11 parts of blending and continuous acting agent, 4-7 parts of compatibilizer, 3-5 parts of fluid loss agent, 45-50 parts of water and 3-6 parts of nano silicon dioxide modifier.
In a preferred embodiment, the underwater undispersed cement slurry is selected to include the following raw materials in parts by weight:
52.5 parts of Portland cement, 12.5 parts of blast furnace slag, 11 parts of fly ash, 9 parts of blending and continuous acting agent, 5.5 parts of compatibilizer, 4 parts of filtrate reducer, 47.5 parts of water and 4.5 parts of nano silicon dioxide modifier.
In some embodiments, the fluid loss additive described above may be selected as an AMPS polymer and the compatibilizer may be selected as an alcohol block polyether.
The invention relates to a preparation method of underwater non-dispersed cement paste for drilling, which comprises the following steps:
Step one: weighing the raw materials:
step two: the raw materials are stirred and mixed uniformly in sequence, and the cement paste is obtained.
In other embodiments, the preparation method of the reconciliation and efficacy agent comprises the following steps:
S01: the silicon carbide whisker is sent into a sufficient amount of potassium permanganate solution to be stirred, washed and dried, then is subjected to heat treatment for 5-10min at 210-230 ℃, is cooled to 105-110 ℃ at a speed of 1-3 ℃/min, is kept for 10min, and is finally subjected to air cooling to room temperature;
s02: 3-6 parts by weight of platy talcum powder, 1-3 parts by weight of lanthanum chloride solution and 2-4 parts by weight of sodium silicate solution are blended, then 1-2 parts by weight of silane coupling agent KH560 is added, and stirring is carried out fully, thus obtaining a blending solution;
s03: and (3) carrying out ultrasonic blending treatment on the silicon carbide whisker and the blending liquid in the S01 according to the weight ratio of 2:5, wherein the ultrasonic power is 350-400W, the ultrasonic time is 1h, and after the treatment is finished, carrying out suction filtration and drying to obtain the blending continuous-effect agent.
Further, the stirring treatment in the potassium permanganate solution in the embodiment adopts 10% by mass of potassium permanganate solution to stir for 1h at the rotating speed of 1000-1500 r/min; the mass fraction of the lanthanum chloride solution is 2-5%; the mass fraction of the sodium silicate solution is 8-12%.
In other embodiments, the preparation method of the platy talcum powder comprises the following steps:
The method comprises the steps of firstly carrying out irradiation treatment on flaky talcum powder in a proton irradiation box, wherein the irradiation power is 400-450W, the irradiation is carried out for 25-30min, the irradiation is finished, 3-5 parts of irradiated flaky talcum powder, 1-2 parts of nano silica sol, 4-7 parts of 5% chitosan solution and 1-3 parts of 2% yttrium nitrate solution are subjected to blending ball milling treatment, the ball milling rotating speed is 1000-1500r/min, the ball milling is finished, and the flaky talcum powder is obtained after suction filtration and drying.
In other embodiments, the preparation method of the nano silica modifier comprises the following steps:
S101: stirring and mixing nano silicon dioxide in hydrochloric acid solution with mass fraction of 2% which is 3-5 times of the total amount of nano silicon dioxide, washing with water and drying;
S102: 3-5 parts of dried nano silicon dioxide, 4-7 parts of sodium lignin sulfonate solution, 1-2 parts of glycolic acid and 1-2 parts of hydroxyapatite are stirred and mixed uniformly, and finally the nano silicon dioxide modifier is obtained by washing and drying.
Further, the mass fraction of the sodium lignin sulfonate solution in the above embodiment is 10-15%.
Example 1
The underwater non-dispersed cement slurry for drilling in the embodiment comprises the following raw materials in parts by weight:
50 parts of Portland cement, 10 parts of blast furnace slag, 8 parts of fly ash, 7 parts of blending and continuous acting agent, 4 parts of compatibilizer, 3 parts of fluid loss agent, 45 parts of water and 3 parts of nano silicon dioxide modifier.
Wherein the fluid loss agent is AMPS polymer, and the compatibilizer is alcohol block polyether.
The preparation method of the blending and continuous acting agent of the embodiment comprises the following steps:
S01: the silicon carbide whisker is sent into a sufficient amount of potassium permanganate solution to be stirred, washed and dried, then is subjected to heat treatment for 5min at 210 ℃, is cooled to 105 ℃ at a speed of 1 ℃/min, is kept for 10min, and is finally subjected to air cooling to room temperature;
s02: 3 parts by weight of flaky talcum powder, 1 part of lanthanum chloride solution and 2 parts of sodium silicate solution are mixed, then 1 part of silane coupling agent KH560 is added, and stirring is carried out fully, thus obtaining a blending solution;
s03: and (3) carrying out ultrasonic blending treatment on the silicon carbide whisker and the blending liquid in the S01 according to the weight ratio of 2:5, wherein the ultrasonic power is 350W, the ultrasonic time is 1h, and the blending continuous-effect agent is obtained after the treatment is finished, and the filtration and the drying are carried out.
Wherein, the stirring treatment in the potassium permanganate solution adopts 10 percent of potassium permanganate solution by mass fraction to stir for 1h at the rotating speed of 1000 r/min; the mass fraction of the lanthanum chloride solution is 2%; the mass fraction of the sodium silicate solution is 8%.
The preparation method of the platy talcum powder of the embodiment comprises the following steps:
The method comprises the steps of firstly carrying out irradiation treatment on flaky talcum powder in a proton irradiation box, wherein the irradiation power is 400W, the irradiation is finished for 25min, 3 parts of irradiated flaky talcum powder, 1 part of nano silica sol, 4 parts of chitosan solution with the mass fraction of 5% and 1 part of yttrium nitrate with the mass fraction of 2% are subjected to blending ball milling treatment, the ball milling rotating speed is 1000r/min, the ball milling is finished for 1h, and the flaky talcum powder is obtained through suction filtration and drying.
The preparation method of the nano silicon dioxide modifier in the embodiment comprises the following steps:
S101: stirring and uniformly mixing nano silicon dioxide in hydrochloric acid solution with mass fraction of 2% which is3 times of the total amount of the nano silicon dioxide, and then washing and drying;
s102: and (3) stirring and uniformly mixing 3 parts of dried nano silicon dioxide, 4 parts of sodium lignin sulfonate solution, 1 part of hydroxyacetic acid and 1 part of hydroxyapatite, and finally washing and drying to obtain the nano silicon dioxide modifier. Wherein the mass fraction of the sodium lignin sulfonate solution is 10%.
Example 2
The underwater non-dispersed cement slurry for drilling in the embodiment comprises the following raw materials in parts by weight:
55 parts of silicate cement, 15 parts of blast furnace slag, 14 parts of fly ash, 11 parts of blending continuous effect agent, 7 parts of compatibilizer, 5 parts of fluid loss agent, 50 parts of water and 6 parts of nano silicon dioxide modifier.
Wherein the fluid loss agent is AMPS polymer, and the compatibilizer is alcohol block polyether.
The preparation method of the blending and continuous acting agent of the embodiment comprises the following steps:
S01: the silicon carbide whisker is sent into a sufficient amount of potassium permanganate solution to be stirred, washed and dried, then is subjected to heat treatment for 10min at 230 ℃, is cooled to 110 ℃ at a speed of 3 ℃/min, is kept for 10min, and is finally subjected to air cooling to room temperature;
S02: blending 6 parts by weight of platy talcum powder, 3 parts by weight of lanthanum chloride solution and 4 parts by weight of sodium silicate solution, then adding 2 parts by weight of silane coupling agent KH560, and stirring thoroughly to obtain a blending solution;
S03: and (3) carrying out ultrasonic blending treatment on the silicon carbide whisker and the blending liquid in the S01 according to the weight ratio of 2:5, wherein the ultrasonic power is 400W, the ultrasonic time is 1h, and after the treatment is finished, carrying out suction filtration and drying to obtain the blending continuous-effect agent.
Wherein, the stirring treatment in the potassium permanganate solution adopts 10 percent of potassium permanganate solution by mass fraction to stir for 1h at the rotating speed of 1500 r/min; the mass fraction of the lanthanum chloride solution is 5%; the mass fraction of the sodium silicate solution is 12%.
The preparation method of the platy talcum powder of the embodiment comprises the following steps:
The method comprises the steps of firstly carrying out irradiation treatment on flaky talcum powder in a proton irradiation box, wherein the irradiation power is 450W, the irradiation is finished for 30min, 5 parts of irradiated flaky talcum powder, 2 parts of nano silica sol, 7 parts of 5 mass percent chitosan solution and 3 parts of 2 mass percent yttrium nitrate are subjected to blending ball milling treatment, the ball milling rotating speed is 1500r/min, the ball milling is finished for 2h, and the flaky talcum powder is obtained through suction filtration and drying.
The preparation method of the nano silicon dioxide modifier in the embodiment comprises the following steps:
S101: stirring and mixing nano silicon dioxide in hydrochloric acid solution with mass fraction of 2% which is 3-5 times of the total amount of nano silicon dioxide, washing with water and drying;
S102: and (3) uniformly stirring and mixing 5 parts of dried nano silicon dioxide, 7 parts of sodium lignin sulfonate solution, 2 parts of hydroxyacetic acid and 2 parts of hydroxyapatite, and finally washing and drying to obtain the nano silicon dioxide modifier. Wherein the mass fraction of the sodium lignin sulfonate solution is 15%.
Example 3
The underwater non-dispersed cement slurry for drilling in the embodiment comprises the following raw materials in parts by weight:
52.5 parts of Portland cement, 12.5 parts of blast furnace slag, 11 parts of fly ash, 9 parts of blending and continuous acting agent, 5.5 parts of compatibilizer, 4 parts of filtrate reducer, 47.5 parts of water and 4.5 parts of nano silicon dioxide modifier.
Wherein the fluid loss agent is AMPS polymer, and the compatibilizer is alcohol block polyether.
The preparation method of the blending and continuous acting agent of the embodiment comprises the following steps:
s01: the silicon carbide whisker is sent into a sufficient amount of potassium permanganate solution to be stirred, washed and dried, then is subjected to heat treatment at 220 ℃ for 7.5min, is cooled to 17 ℃ at a speed of 1 ℃/min, is kept for 10min, and is finally subjected to air cooling to room temperature;
S02: 4.5 parts by weight of platy talcum powder, 2 parts of lanthanum chloride solution and 3 parts of sodium silicate solution are mixed, then 1.5 parts of silane coupling agent KH560 is added, and stirring is carried out fully, thus obtaining a blending solution;
s03: and (3) carrying out ultrasonic blending treatment on the silicon carbide whisker and the blending liquid in the S01 according to the weight ratio of 2:5, wherein the ultrasonic power is 370W, the ultrasonic time is 1h, and after the treatment is finished, carrying out suction filtration and drying to obtain the blending continuous-effect agent.
Wherein, the stirring treatment in the potassium permanganate solution adopts 10 percent of potassium permanganate solution by mass fraction to stir for 1h at the rotating speed of 1000-1500 r/min; the mass fraction of the lanthanum chloride solution is 3.5%; the mass fraction of the sodium silicate solution is 10%.
The preparation method of the platy talcum powder of the embodiment comprises the following steps:
The method comprises the steps of carrying out irradiation treatment on flaky talcum powder in a proton irradiation box, wherein the irradiation power is 420W, the irradiation is finished for 27min, 4 parts of irradiated flaky talcum powder, 1.5 parts of nano silica sol, 5.5 parts of 5% chitosan solution by mass fraction and 2 parts of 2% yttrium nitrate by mass fraction are subjected to blending ball milling treatment, the ball milling rotating speed is 1250r/min, the ball milling is carried out for 1.5h, the ball milling is finished, and the flaky talcum powder is obtained after suction filtration and drying.
The preparation method of the nano silicon dioxide modifier in the embodiment comprises the following steps:
S101: stirring and uniformly mixing nano silicon dioxide in hydrochloric acid solution with mass fraction of 2% which is 4 times of the total amount of the nano silicon dioxide, and then washing and drying;
S102: 4 parts of dried nano silicon dioxide, 5.5 parts of sodium lignin sulfonate solution, 1.5 parts of hydroxyacetic acid and 1.5 parts of hydroxyapatite are stirred and mixed uniformly, and finally the nano silicon dioxide modifier is obtained by washing and drying. Wherein the mass fraction of the sodium lignin sulfonate solution is 12.5%.
Comparative example 1
Unlike example 3, no tempering and potentiating agent was added.
Comparative example 2
The difference from example 3 is that the preparation of the tempering and potentiating agent does not employ the S01 step.
Comparative example 3
Unlike example 3, no tempering solution was used in the preparation of the tempering and potentiating agent.
Comparative example 4
The difference from example 3 is that no platy talc powder was added to the tempering liquid.
Comparative example 5
The difference from example 3 is that no nano silica sol and chitosan solution and yttrium nitrate blending ball milling treatment are adopted in the preparation of the platy talcum powder.
Comparative example 6
The difference from example 3 is that no nanosilica modifier is added.
Comparative example 7
The difference from example 3 is that the S102 treatment was not used in the nano silica modifier.
Comparative example 8
Unlike example 3, no glycolic acid and no hydroxyapatite were added in the treatment of S102.
The salt spray resistance was tested by testing the properties of examples 1 to 3 and comparative examples 1 to 8 and placing the product under a salt spray of sodium chloride with a mass fraction of 2% for 24 hours, and the measurement results are shown in table 1.
TABLE 1 measurement results of examples 1-3 and comparative examples 1-8
According to the invention, the initial setting time and the compressive strength can be improved in a coordinated manner, and meanwhile, the product has excellent performance stability under the saline-alkali condition and obvious performance stability;
as shown in comparative examples 1, 6 and 3, one of the blending and linking agent and the nano silicon dioxide modifier is not added, the product performance is obviously deteriorated, and the product performance effect is obvious by adopting the cooperation of the blending and linking agent and the nano silicon dioxide modifier;
As seen from comparative examples 1 to 8 and example 3, the blending continuous-effect agent is not treated in the step S01, the blending liquid is not treated in the preparation of the blending continuous-effect agent, the flaky talcum powder is not added in the blending liquid, the nano silica sol, the chitosan solution and the yttrium nitrate are not subjected to the blending ball milling treatment in the preparation of the flaky talcum powder, and the performances of the product tend to be poor; the flaky talcum powder prepared by adopting the specific method of the invention is matched with the blending liquid of the invention to obtain the blending continuous-effect agent, the performance effect of the product is most obvious, and other methods are adopted to replace the product with less obvious effect than the invention;
the nano silicon dioxide modifier is not treated by S102, and glycolic acid and hydroxyapatite are not added in the S102 treatment, so that the performance of the product is prone to be deteriorated, the S102 step prepared by the specific method is matched with the S101 treatment step of the invention, the performance effect of the product is most remarkable, and the effect of the product is not as obvious as that of the invention when other methods are adopted for substitution.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. An underwater non-dispersed cement slurry for drilling is characterized by comprising the following raw materials in parts by weight:
50-55 parts of Portland cement, 10-15 parts of blast furnace slag, 8-14 parts of fly ash, 7-11 parts of blending and continuous acting agent, 4-7 parts of compatibilizer, 3-5 parts of fluid loss agent, 45-50 parts of water and 3-6 parts of nano silicon dioxide modifier;
the fluid loss agent is an AMPS polymer; the compatibilizer is alcohol block polyether;
The preparation method of the blending continuous-effect agent comprises the following steps:
S01: the silicon carbide whisker is sent into a sufficient amount of potassium permanganate solution to be stirred, washed and dried, then is subjected to heat treatment for 5-10min at 210-230 ℃, is cooled to 105-110 ℃ at a speed of 1-3 ℃/min, is kept for 10min, and is finally subjected to air cooling to room temperature;
s02: 3-6 parts by weight of platy talcum powder, 1-3 parts by weight of lanthanum chloride solution and 2-4 parts by weight of sodium silicate solution are blended, then 1-2 parts by weight of silane coupling agent KH560 is added, and stirring is carried out fully, thus obtaining a blending solution;
S03: carrying out ultrasonic blending treatment on the silicon carbide whisker and the blending liquid of S01 according to the weight ratio of 2:5, wherein the ultrasonic power is 350-400W, the ultrasonic time is 1h, and after the treatment is finished, carrying out suction filtration and drying to obtain a blending continuous effect agent;
the preparation method of the flaky talcum powder comprises the following steps:
carrying out irradiation treatment on flaky talcum powder in a proton irradiation box at the irradiation power of 400-450W for 25-30min, finishing irradiation, carrying out blending ball milling treatment on 3-5 parts by weight of irradiated flaky talcum powder, 1-2 parts by weight of nano silica sol, 4-7 parts by weight of 5% chitosan solution and 1-3 parts by weight of 2% yttrium nitrate, wherein the ball milling speed is 1000-1500r/min, carrying out ball milling for 1-2h, and carrying out suction filtration and drying to obtain flaky talcum powder;
the preparation method of the nano silicon dioxide modifier comprises the following steps:
s101: stirring and mixing nano silicon dioxide in hydrochloric acid solution with mass fraction of 2% which is 3-5 times of the total weight of the nano silicon dioxide, and then washing and drying;
S102: 3-5 parts by weight of dried nano silicon dioxide, 4-7 parts by weight of sodium lignin sulfonate solution, 1-2 parts by weight of glycolic acid and 1-2 parts by weight of hydroxyapatite are stirred and mixed uniformly, and finally the mixture is washed with water and dried to obtain the nano silicon dioxide modifier;
the mass fraction of the sodium lignin sulfonate solution is 10-15%.
2. The underwater non-dispersed cement slurry for well drilling according to claim 1, wherein the stirring treatment in the potassium permanganate solution is stirring at a speed of 1000-1500r/min for 1 hour by using 10% by mass of the potassium permanganate solution.
3. The underwater non-dispersed cement slurry for well drilling according to claim 1, wherein the mass fraction of the lanthanum chloride solution is 2-5%; the mass fraction of the sodium silicate solution is 8-12%.
4. A method of preparing an underwater undispersed cement slurry for use in drilling according to any one of claims 1 to 3, comprising the steps of:
Step one: weighing the raw materials:
Step two: sequentially stirring and uniformly mixing the raw materials to obtain the underwater non-dispersing cement slurry as claimed in any one of claims 1 to 3.
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| CN115849772A (en) * | 2021-09-23 | 2023-03-28 | 中国石油化工股份有限公司 | Geopolymer curing agent for water-based drilling cuttings and treatment method thereof |
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| CN104559981A (en) * | 2015-02-02 | 2015-04-29 | 中国海洋石油总公司 | Low-heat cement slurry capable of preventing gas hydrate from decomposition |
| CN115849772A (en) * | 2021-09-23 | 2023-03-28 | 中国石油化工股份有限公司 | Geopolymer curing agent for water-based drilling cuttings and treatment method thereof |
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