CN106753294A - A kind of leak-stopping cement mortar - Google Patents
A kind of leak-stopping cement mortar Download PDFInfo
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- CN106753294A CN106753294A CN201611108050.7A CN201611108050A CN106753294A CN 106753294 A CN106753294 A CN 106753294A CN 201611108050 A CN201611108050 A CN 201611108050A CN 106753294 A CN106753294 A CN 106753294A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/062—Microsilica, e.g. colloïdal silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/146—Silica fume
- C04B18/147—Conditioning
- C04B18/148—Preparing silica fume slurries or suspensions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/10—Nanoparticle-containing well treatment fluids
-
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/28—Friction or drag reducing additives
-
- 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
Abstract
The present invention provides a kind of leak-stopping cement mortar.The leak-stopping cement mortar that the present invention is provided includes following components：The weight portion of G class g cements 100, the weight portion of nano silicon 5~20, the weight portion of liquid silicon 5~20, the weight portion of silica flour 20~30, the weight portion of ultrafine slag 5~15, the weight portion of dispersant 0.5~1.5, the weight portion of retarder 0.5~1.5 and the weight portion of water 20~40, the leak-stopping cement mortar good fluidity that the present invention is provided, fluidity is up to 25cm, and hardening time is short, at 110 DEG C 48 hours it is i.e. curable, solidification bearing capacity is strong, and compression strength can reach 127MPa.The leak-stopping cement mortar preparation method is simple that the present invention is provided, it is practical, it is adaptable to large-scale industrial production.
Description
Technical field
The present invention relates to oil gas field of engineering technology, more particularly to a kind of leak-stopping cement mortar.
Background technology
In petroleum exploration and development process, due to being exploited by rolling for many years, the production string of Oil/gas Well undergoes all the year round
The corrosion of stratum water is also easy to produce breakage, to ensure the recovery ratio of Oil/gas Well, special closure operation need to be carried out to sleeve pipe；Furthermore,
Because long-term injecting water is washed away, macropore is formed in high permeability zone, cause injection water monolayer to advance by leaps and bounds, High water cut is shown as very in oil well
To water logging, accordingly, it would be desirable to Plugging Water Zones borehole, reselecting layer position carries out reperforation operation, and series of strata are adopted to adjust note, excavates
Interlayer potentiality.In above-mentioned work, later stage safely and effectively operation is realized, it is necessary to the drop ply and borehole that are blocked have very well
Integrality and bearing capacity, such as fracturing work, required bearing capacity is higher, the large-scale volume fracturing skill of such as shale gas
Art, maximum pressure is up to 90MPa, and this proposes requirement very high to bobbin seal bearing capacity.
Chinese invention patent CN101318799 discloses a kind of marine oil gas well cement paste for well cementation, with very high low
Warm intensity, Free water is small, and the thickening time can be adjusted, but 60 DEG C/24 hours intensity of the cement mortar is only 25MPa；And middle promulgated by the State Council
Bright patent CN101160268 discloses a kind of versatility ultrahigh-strength fiber-reinforced mortar high, can carry strength of cement grout
180MPa or so is raised to, but invention only illustrates to be applied to bridge structural member, dam structure component, ocean structure component, building
Build etc.；It is high that Chinese invention patent CN104918899 discloses a kind of initial strength, can carry out in advance steam-cured high-strength
The manufacture method of degree cement admixture and concrete, this kind of cement pulp-water has used a large amount of high-performance water reducing agents than low, is passing through
After 20 DEG C of maintenances in 7 days, cement strength can reach 110MPa, but this kind of cement mortar mainly applies to field of civil engineering.
But all there is certain deficiency and defect in above-mentioned ultrahigh-strength cement slurry：1) high intensity used in Oil/gas Well industry
The compression strength of mortar architecture is difficult to reach design requirement (more than bearing capacity 90MPa)；2) general compression strength can reach
Cement mortar to 90MPa is generally all used and, because such cement mortar is thicker, had with building, the industry such as civil engineering
Poor mobility, it is difficult to pump into well, is not appropriate for being applied to oil well industry；3) general high-intensity cement paste will reach
The intensity of 90MPa, typically will be at 7 days or so, it is desirable to reach 90MPa's in 48 hours, it is necessary to wait solidifying or maintenance time long
Intensity, realizes difficult.
The content of the invention
It is an object of the invention to provide a kind of leak-stopping cement mortar.The leak-stopping cement mortar viscosity for providing of the invention is low, flowing
Property it is good, hardening time is short, has intensity very high after solidification, and bearing capacity is strong.
The invention provides a kind of leak-stopping cement mortar, including following components：
Preferably, the leak-stopping cement mortar includes following components：
Preferably, the diameter of the nano silicon is no more than 30nm.
Preferably, the use state of the nano silicon is nanometer titanium dioxide silicon emulsion.
Preferably, the solid content of the nanometer titanium dioxide silicon emulsion is 10~20%.
Preferably, the average grain diameter of active silica is 0.3~0.8 μm in the liquid silicon.
Preferably, the granularity of the silica flour is 100~300 mesh.
Preferably, the specific surface area of the ultrafine slag is not less than 500m2/kg。
Preferably, the dispersant includes in acetonformaldehyde condensation product, naphthalene sulfonic salt and fatty acid dispersant
Plant or various.
Preferably, the retarder includes one or more in citric acid, boric acid and organic phosphate.
The invention provides a kind of leak-stopping cement mortar, including following components：The weight portion of G class g cements 100, nano silicon
5~20 weight portions, the weight portion of liquid silicon 5~20, the weight portion of silica flour 20~30, the weight portion of ultrafine slag 5~15, dispersant 0.5~
1.5 weight portions, the weight portion of retarder 0.5~1.5 and the weight portion of water 20~40.The present invention with G class g cements as matrix, by addition
Tiny hole in the small nano silicon of particle diameter and liquid silicon filling hardened cement paste, so as to reduce the hole of cement slurry
Rate, and then make hardened cement paste and concrete is more closely knit, intensity is higher, while strengthening hardened cement paste and concrete resistance
The performance of outer force deformation；Add dispersant simultaneously to be homogeneously dispersed in water phase by the particle in cement, for pockets of water
Mud, by its effective dispersion, makes the Character change of hydrated product, reduces its interior frictional resistance.Test result indicate that, the present invention is carried
The leak-stopping cement mortar good fluidity of confession, fluidity is up to 25cm, and hardening time is short, at 110 DEG C 48 hours it is i.e. curable, solidification is held
Pressure energy power is strong, and compression strength can reach 127MPa.
Specific embodiment
The invention provides a kind of leak-stopping cement mortar, including following components：The weight portion of G class g cements 100, nano silicon
5~20 weight portions, the weight portion of liquid silicon 5~20, the weight portion of silica flour 20~30, the weight portion of ultrafine slag 5~15, dispersant 0.5~
1.5 weight portions, the weight portion of retarder 0.5~1.5 and the weight portion of water 20~40.
The leak-stopping cement mortar that the present invention is provided includes the weight portion of G class g cements 100.In the present invention, the G class g cements are preferred
It is oil well G class g cements.The present invention, without special restriction, is known to the source of the G class g cements using those skilled in the art
Commercially available G class g cements.In an embodiment of the present invention, the G class g cements can be specially the Three Gorges G grades of water in Three Gorges cement plant
Mud.In the present invention, the parts by weight of other components are all on the basis of 100 weight portion G class g cements.
The leak-stopping cement mortar that the present invention is provided includes the weight portion of nano silicon 5~20, preferably 6~10 weight portions.
In the present invention, the diameter of the nano silicon is preferably no more than 30nm, more preferably 10~20nm.In the present invention
In, the nano silicon is preferably fumed silica；The specific surface area of the nano silicon is preferably 350~
400m2/kg.In the present invention, the use state of the nano silicon is preferably nanometer titanium dioxide silicon emulsion；The nanometer
The solid content of silica emulsion is preferably 10~20%, more preferably 14~16%.In the present invention, the nanometer titanium dioxide
Silicon grain is tiny, can fill the tiny hole in hardened cement paste, so as to reduce the porosity of cement slurry, and then makes hard
Change cement slurry and concrete is more closely knit, intensity is higher, while strengthening hardened cement paste and concrete resists outer force deformation
Performance.
The leak-stopping cement mortar that the present invention is provided includes the weight portion of liquid silicon 5~20, preferably 10~15 weight portions.In the present invention
In, the average grain diameter of active silica is 0.3~0.8 μm in the liquid silicon.In the present invention, the liquid silicon is preferably silicon steaming
After vapour oxidation, specially designed dust-precipitator collects the reactive silica silicon particle for obtaining by hanging that treatment and water are mixed to form
Turbid liquid.The present invention originates without special restriction to the liquid silicon, is using commercially available liquid silicon well known to those skilled in the art
Can.In an embodiment of the present invention, the liquid silicon can be specially the liquid silicon MX in Jingzhou Jiahua Technology Co., Ltd..In the present invention
In, the liquid silicon grain is tiny, can fill the tiny hole in hardened cement paste, so as to reduce the hole of cement slurry
Rate, and then make hardened cement paste and concrete is more closely knit, intensity is higher, while strengthening hardened cement paste and concrete resistance
The performance of outer force deformation.
The leak-stopping cement mortar that the present invention is provided includes the weight portion of silica flour 20~30, preferably 24~28 weight portions.In this hair
In bright, the granularity of the silica flour is preferably 100~300 mesh, more preferably 150~250 mesh.Source of the present invention to the silica flour
There is no special restriction, using commercially available silica flour well known to those skilled in the art.In an embodiment of the present invention, the silicon
Powder can be specially the SSA-1 silica flours of Jingzhou Jiahua Technology Co., Ltd..In the present invention, the silica flour can avoid Behavior of Hardened Cement Paste from existing
The strength retrogression of hot environment.
The leak-stopping cement mortar that the present invention is provided includes the weight portion of ultrafine slag 5~15, preferably 8~12 weight portions.At this
In invention, the specific surface area of the ultrafine slag is not less than 500m2/ kg, preferably 600~800m2/kg.In the present invention, institute
State ultrafine slag and be preferably slag powders with granulated blast-furnace slag as primary raw material.The present invention does not have to the source of the ultrafine slag
There is special restriction, using commercially available ultrafine slag well known to those skilled in the art.In an embodiment of the present invention, it is described
Ultrafine slag can be specially the SPF-1 ultrafine slags of Jingzhou Jiahua Technology Co., Ltd..
The leak-stopping cement mortar that the present invention is provided includes the weight portion of dispersant 0.5~1.5, preferably 0.8~1.2 weight portion.
In the present invention, the dispersant preferably includes in acetonformaldehyde condensation product, naphthalene sulfonic salt and fatty acid dispersant
Plant or various.In the present invention, the fatty acid dispersant preferably includes fatty acid polyethylene glycol ester.The present invention is to described point
Powder source without special restriction, using commercial dispersants well known to those skilled in the art.In reality of the invention
Apply in example, the dispersant can be specially the CF44L acetonformaldehyde condensation products of COSL.In this hair
In bright, the dispersant can be such that the particle in cement is homogeneously dispersed in water phase, for pockets of cement, its is effective
Dispersion, makes the Character change of hydrated product, reduces its interior frictional resistance.
The leak-stopping cement mortar that the present invention is provided includes the weight portion of retarder 0.5~1.5, preferably 0.8~1.2 weight portion.
In the present invention, the retarder preferably includes one or more in citric acid, boric acid and organic phosphate.In the present invention
In, the organic phosphate preferably includes ethylene diamine tetra methylene phosphonic acid sodium.In the present invention, the retarder is made by adsorbing
With, make itself to be adsorbed in the surface of hydrolysis product of cement, hinder contact of the water with cement and aquation further to occur, produce
The effect of slow setting.
The leak-stopping cement mortar that the present invention is provided includes the weight portion of water 20~40, preferably 25~35 weight portions.In the present invention
In, the water is preferably fresh water.In the present invention, the water makes hydrated reaction of cement fully carry out, and makes various cement additires
Effectively it is dissolved in cement slurry, and play a role.
The present invention does not have special limitation to the preparation method of the leak-stopping cement mortar, is known using those skilled in the art
Composition prepare technical scheme, by G class g cements described in above-mentioned technical proposal, nano silicon, liquid silicon, silica flour is ultra-fine
Slag, dispersant, retarder and water mix.
In the present invention, the preparation method of the leak-stopping cement mortar preferably includes following steps：
G class g cements, silica flour, retarder and ultrafine slag are mixed, mixed-powder is obtained；
Nano silicon, liquid silicon, dispersant and water are mixed, mixed slurry is obtained；
The mixed-powder is mixed with mixed slurry, leak-stopping cement mortar is obtained.
The present invention preferably mixes nano silicon, liquid silicon, dispersant and water, obtains mixed slurry.In the present invention,
The nano silicon is preferably added in the form of an emulsion.In the present invention, the solid content of the emulsion is preferably 10~20%,
More preferably 14~16%.The present invention does not have special restriction to the preparation method of the emulsion, using those skilled in the art
The well known technical scheme for preparing dispersion liquid.In the present invention, it is preferred to nano silicon is mixed with water, through ultrasound point
Dissipate and obtain emulsion.
In order to further illustrate the present invention, the leak-stopping cement mortar that the present invention is provided is carried out in detail with reference to embodiment
Description, but they can not be interpreted as limiting the scope of the present invention.
Embodiment 1:
Formula：100 parts of G class g cements, 8.3 parts of nano silicon, 5 parts of liquid silicon, 25 parts of silica flour, ultrafine slag
10 parts, 1 part of acetonformaldehyde condensation product, 1 part of retarder, 40 parts of fresh water.
Compound method：Required solid material is pre-mixed uniform stand-by, after fluent material is well mixed, added
The solid material being pre-mixed, and it is uniformly mixing to obtain leak-stopping cement mortar.
According to well cementation testing standard API10B-2-2005, the leak-stopping cement mortar carries out performance test, its result such as institute of table 1
Show.
Embodiment 2:
Formula：100 parts of G class g cements, 5 parts of nano silicon, 20 parts of liquid silicon, 25 parts of silica flour, ultrafine slag
10 parts, 1 part of acetonformaldehyde condensation product, 1 part of retarder, 30 parts of fresh water.
Compound method：Required solid material is pre-mixed uniform stand-by, after fluent material is well mixed, added
The solid material being pre-mixed, and it is uniformly mixing to obtain leak-stopping cement mortar.
According to well cementation testing standard API10B-2-2005, the leak-stopping cement mortar carries out performance test, its result such as institute of table 1
Show.
Embodiment 3:
Formula：100 parts of G class g cements, 5 parts of nano-silicon, 20 parts of liquid silicon, 25 parts of silica flour, 10 parts of ultrafine slag, first
1 part of aldehyde condensation of acetone thing, 1 part of retarder, 20 parts of fresh water.
Compound method：Required solid material is pre-mixed uniform stand-by, after fluent material is well mixed, added
The solid material being pre-mixed, and it is uniformly mixing to obtain leak-stopping cement mortar.
According to well cementation testing standard API10B-2-2005, the leak-stopping cement mortar carries out performance test, its result such as institute of table 1
Show.
Embodiment 4:
Formula：100 parts of G class g cements, 30 parts of silica flour, 10 parts of ultrafine slag, 1 part of acetonformaldehyde condensation product, lemon
Lemon acid 1 part, 25 parts of fresh water.
Compound method：Required solid material is pre-mixed uniform stand-by, after fluent material is well mixed, added
The solid material being pre-mixed, and it is uniformly mixing to obtain leak-stopping cement mortar.
According to well cementation testing standard API10B-2-2005, the leak-stopping cement mortar carries out performance test, its result such as institute of table 1
Show.
The curing performance of the leak-stopping cement mortar that the embodiment of the present invention of table 1 is obtained
" 110 DEG C of compression strength " in table 1 is, at 110 DEG C, the cement measured after 48h coolings to be conserved in 22MPa curing autoclaves
The intensity of stone.
As can be seen from the above embodiments, the present invention provide leak-stopping cement mortar viscosity is low, good fluidity, hardening time
It is short, there is intensity very high after solidification, bearing capacity is strong.
The above is only the preferred embodiment of the present invention, and any formal limitation is not made to the present invention.Should
Point out, for those skilled in the art, under the premise without departing from the principles of the invention, if can also make
Dry improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of leak-stopping cement mortar, including following components：
2. leak-stopping cement mortar according to claim 1, it is characterised in that including following components：
3. leak-stopping cement mortar according to claim 1 and 2, it is characterised in that the diameter of the nano silicon does not surpass
Cross 30nm.
4. leak-stopping cement mortar according to claim 3, it is characterised in that the use state of the nano silicon is to receive
Rice silica emulsion.
5. leak-stopping cement mortar according to claim 4, it is characterised in that the solid content of the nanometer titanium dioxide silicon emulsion is
10~20%.
6. leak-stopping cement mortar according to claim 1 and 2, it is characterised in that active silica is flat in the liquid silicon
Equal particle diameter is 0.3~0.8 μm.
7. leak-stopping cement mortar according to claim 1 and 2, it is characterised in that the granularity of the silica flour is 100~300 mesh.
8. leak-stopping cement mortar according to claim 1 and 2, it is characterised in that the specific surface area of the ultrafine slag is not
Less than 500m2/kg。
9. leak-stopping cement mortar according to claim 1 and 2, it is characterised in that the dispersant includes acetonformaldehyde condensation
One or more in thing, naphthalene sulfonic salt and fatty acid dispersant.
10. leak-stopping cement mortar according to claim 1 and 2, it is characterised in that the retarder includes citric acid, boric acid
With one or more in organic phosphate.
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| CN108531146A (en) * | 2018-06-15 | 2018-09-14 | 中煤科工集团重庆研究院有限公司 | A kind of drilling leakage blockage liquid and preparation method thereof |
| CN110080700A (en) * | 2018-01-26 | 2019-08-02 | 中石化石油工程技术服务有限公司 | A kind of method of Environment-protecting Drilling Fluids granularity optimization |
| CN110218555A (en) * | 2019-07-15 | 2019-09-10 | 济南市坤鹏技术开发中心 | A kind of cement slurry for petroleum works |
| CN110228975A (en) * | 2019-07-15 | 2019-09-13 | 济南市坤鹏技术开发中心 | A kind of preparation process of the cement slurry for petroleum works |
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| CN103045214A (en) * | 2013-01-16 | 2013-04-17 | 西南石油大学 | Plugging thixotropic cement paste for oil-gas well and preparation method for same |
| CN103923628A (en) * | 2014-04-17 | 2014-07-16 | 中国海洋石油总公司 | Low-viscidity flexible cement paste for well cementation with slim hole and single channel |
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| CN104371678A (en) * | 2014-11-06 | 2015-02-25 | 中国石油天然气集团公司 | Expanded flexible well cementing grout and preparation method thereof |
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| CN110228975B (en) * | 2019-07-15 | 2021-01-29 | 浙江吉泰混凝土有限公司 | Preparation process of cement paste |
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Effective date of registration: 20200422 Address after: 434000, No. 1, South Ring Road, Shashi District, Hubei, Jingzhou Co-patentee after: JINGZHOU JIAHUA TECHNOLOGY Co.,Ltd. Patentee after: Yangtze University Co-patentee after: COSL CHEMICALS (TIANJIN) Co.,Ltd. Address before: 434000 No.1, South Ring Road, Shashi District, Hubei, Jingzhou Co-patentee before: JINGZHOU JIAHUA TECHNOLOGY Co.,Ltd. Patentee before: Yangtze University |