CN106753294B - A kind of leak-stopping cement mortar - Google Patents
A kind of leak-stopping cement mortar Download PDFInfo
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- CN106753294B CN106753294B CN201611108050.7A CN201611108050A CN106753294B CN 106753294 B CN106753294 B CN 106753294B CN 201611108050 A CN201611108050 A CN 201611108050A CN 106753294 B CN106753294 B CN 106753294B
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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
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- 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.Leak-stopping cement mortar provided by the invention includes following components: 100 parts by weight of G class g cement, 5~20 parts by weight of nano silica, 5~20 parts by weight of liquid silicon, 20~30 parts by weight of silicon powder, 5~15 parts by weight of ultrafine slag, 0.5~1.5 parts by weight of dispersing agent, 20~40 parts by weight of 0.5~1.5 parts by weight of retarder and water, leak-stopping cement mortar good fluidity provided by the invention, for fluidity up to 25cm, curing time is short, at 110 DEG C 48 hours it is i.e. curable, solidification bearing capacity is strong, and compression strength can achieve 127MPa.Leak-stopping cement mortar preparation method provided by the invention is easy, practical, is suitable for large-scale industrial production.
Description
Technical field
The present invention relates to oil gas field of engineering technology, in particular to a kind of leak-stopping cement mortar.
Background technique
In petroleum exploration and development process, due to exploiting by the rolling of many years, the production string of oil/gas well is subjected to all the year round
The corrosion of water flooding is also easy to produce breakage, for the recovery ratio for ensureing oil/gas well, need to carry out special closure operation to casing；Furthermore
Since long-term injecting water is washed away, macropore is formed in high permeability zone, causes injection water monolayer to advance by leaps and bounds, shows as High water cut very in oil well
To water logging, therefore, it is necessary to Plugging Water Zones boreholes, reselect layer position and carry out reperforation operation, adopt series of strata with adjustment note, excavate
Interlayer potentiality.In above-mentioned work, the safely and effectively operation of Yao Shixian later period needs blocked drop ply and borehole to have fine
Integrality and bearing capacity, such as fracturing work, required bearing capacity is higher, such as shale gas large size volume fracturing skill
Art, maximum pressure are up to 90MPa, this proposes very high requirement to bobbin seal bearing capacity.
Chinese invention patent CN101318799 discloses a kind of marine oil gas well cement paste for well cementation, has very high low
Warm intensity, Free water is small, and the thickening time is adjustable, but 60 DEG C/24 hours intensity of the cement slurry is only 25MPa；And middle promulgated by the State Council
Bright patent CN101160268 discloses a kind of ultrahigh-strength fiber-reinforced mortar that versatility is high, can mention strength of cement grout
It is raised to 180MPa or so, but invents only explanation and is applied to bridge structural member, dam structure component, ocean structure component, building
Building etc.；Chinese invention patent CN104918899 discloses a kind of initial strength height, can carry out in advance steam-cured high-strength
Spend the manufacturing method of cement admixture and concrete, this kind of cement pulp-water has used a large amount of high-performance water reducing agents, passed through than low
After 20 DEG C of maintenances in 7 days, cement strength can reach 110MPa, but this kind of cement slurry 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 (bearing capacity 90MPa or more)；2) general compression strength can reach
To 90MPa cement slurry generally all with building, the industries such as civil engineering have since such cement slurry is thicker
Poor mobility, it is difficult to be pumped into wellbore, be not appropriate for being applied to oil well industry；3) general high-intensity cement paste will reach
The intensity of 90MPa, it is long to need to wait solidifying or maintenance time, generally will be at 7 days or so, it is desirable that reach 90MPa's in 48 hours
Intensity is realized difficult.
Summary of the invention
The purpose of the present invention is to provide a kind of leak-stopping cement mortars.Leak-stopping cement mortar viscosity provided by the invention is low, flows
Property it is good, curing time is short, has very high intensity after solidification, and bearing capacity is strong.
The present invention provides a kind of leak-stopping cement mortars, including following components:
Preferably, the leak-stopping cement mortar includes following components:
Preferably, the diameter of the nano silica is no more than 30nm.
Preferably, the use state of the nano silica 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 silicon powder is 100~300 mesh.
Preferably, the specific surface area of the ultrafine slag is not less than 500m2/kg。
Preferably, the dispersing agent includes one in acetonformaldehyde condensation product, naphthalene sulfonic salt and fatty acid dispersing agent
Kind is a variety of.
Preferably, the retarder includes one of citric acid, boric acid and organic phosphate or a variety of.
The present invention provides a kind of leak-stopping cement mortars, including following components: 100 parts by weight of G class g cement, nano silica
5~20 parts by weight, 5~20 parts by weight of liquid silicon, 20~30 parts by weight of silicon powder, 5~15 parts by weight of ultrafine slag, dispersing agent 0.5~
1.5 parts by weight, 20~40 parts by weight of 0.5~1.5 parts by weight of retarder and water.The present invention passes through addition using G class g cement as matrix
Tiny hole in the small nano silica of partial size and liquid silicon filling hardened cement paste, to reduce the hole of cement slurry
Rate, and then make hardened cement paste and concrete is more closely knit, intensity is higher, while enhancing hardened cement paste and concrete is resisted
The performance of external force deformation；It adds dispersing agent simultaneously to be homogeneously dispersed in water phase by the particle in cement, for pockets of water
Its effective dispersion changes the character of hydrated product, reduces its interior frictional resistance by mud.The experimental results showed that the present invention mentions
The leak-stopping cement mortar good fluidity of confession, for fluidity up to 25cm, curing 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 achieve 127MPa.
Specific embodiment
The present invention provides a kind of leak-stopping cement mortars, including following components: 100 parts by weight of G class g cement, nano silica
5~20 parts by weight, 5~20 parts by weight of liquid silicon, 20~30 parts by weight of silicon powder, 5~15 parts by weight of ultrafine slag, dispersing agent 0.5~
1.5 parts by weight, 20~40 parts by weight of 0.5~1.5 parts by weight of retarder and water.
Leak-stopping cement mortar provided by the invention includes 100 parts by weight of G class g cement.In the present invention, the G class g cement is preferred
For oil well G class g cement.The present invention does not have special restriction to the source of the G class g cement, using known to those skilled in the art
Commercially available G class g cement.In an embodiment of the present invention, the G class g cement 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 parts by weight G class g cements.
Leak-stopping cement mortar provided by the invention includes 5~20 parts by weight of nano silica, preferably 6~10 parts by weight.
In the present invention, the diameter of the nano silica is preferably no more than 30nm, more preferably 10~20nm.In the present invention
In, the nano silica is preferably fumed silica；The specific surface area of the nano silica is preferably 350~
400m2/kg.In the present invention, the use state of the nano silica is preferably nanometer titanium dioxide silicon emulsion；The nanometer
The solid content of silica lotion is preferably 10~20%, and more preferably 14~16%.In the present invention, the nanometer titanium dioxide
Silicon particle is tiny, can fill the tiny hole in hardened cement paste, to reduce the porosity of cement slurry, and then makes hard
Change cement slurry and concrete is more closely knit, intensity is higher, while enhancing hardened cement paste and concrete resists external force deformation
Performance.
Leak-stopping cement mortar provided by the invention includes 5~20 parts by weight of liquid silicon, preferably 10~15 parts by weight.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 that silicon steams
After vapour oxidation, the reactive silica silicon particle that specially designed dust-precipitator is collected is hanged by handling with what water was mixed to form
Turbid.The present invention does not have special restriction to the source of the liquid silicon, is using commercially available liquid silicon well known to those skilled in the art
It 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 particle is tiny, the tiny hole in hardened cement paste can be filled, to reduce the hole of cement slurry
Rate, and then make hardened cement paste and concrete is more closely knit, intensity is higher, while enhancing hardened cement paste and concrete is resisted
The performance of external force deformation.
Leak-stopping cement mortar provided by the invention includes 20~30 parts by weight of silicon powder, preferably 24~28 parts by weight.In this hair
In bright, the granularity of the silicon powder is preferably 100~300 mesh, more preferably 150~250 mesh.Source of the present invention to the silicon powder
There is no special restriction, using commercially available silicon powder well known to those skilled in the art.In an embodiment of the present invention, the silicon
Powder can be specially the SSA-1 silicon powder of Jingzhou Jiahua Technology Co., Ltd..In the present invention, the silicon powder can exist to avoid Behavior of Hardened Cement Paste
The strength retrogression of hot environment.
Leak-stopping cement mortar provided by the invention includes 5~15 parts by weight of ultrafine slag, preferably 8~12 parts by weight.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
Ultrafine slag is stated preferably using granulated blast-furnace slag as the slag powders of primary raw material.The present invention does not have 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, described
Ultrafine slag can be specially the SPF-1 ultrafine slag of Jingzhou Jiahua Technology Co., Ltd..
Leak-stopping cement mortar provided by the invention includes 0.5~1.5 parts by weight of dispersing agent, preferably 0.8~1.2 parts by weight.
In the present invention, the dispersing agent preferably includes one in acetonformaldehyde condensation product, naphthalene sulfonic salt and fatty acid dispersing agent
Kind is a variety of.In the present invention, the fatty acid dispersing agent preferably includes fatty acid polyethylene glycol ester.The present invention is to described point
The source of powder does not have special restriction, using commercial dispersants well known to those skilled in the art.In reality of the invention
It applies in example, the dispersing agent can be specially the CF44L acetonformaldehyde condensation product of China Oilfield Services Co., Ltd..In this hair
In bright, the dispersing agent can be such that the particle in cement is homogeneously dispersed in water phase, for pockets of cement, it is effective
Dispersion, changes the character of hydrated product, reduces its interior frictional resistance.
Leak-stopping cement mortar provided by the invention includes 0.5~1.5 parts by weight of retarder, preferably 0.8~1.2 parts by weight.
In the present invention, the retarder preferably includes one of citric acid, boric acid and organic phosphate or a variety of.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 absorption
With making the surface for itself being adsorbed in hydrolysis product of cement, hinder contact and aquation further occurrence of the water with cement, generate
The effect of slow setting.
Leak-stopping cement mortar provided by the invention includes 20~40 parts by weight of water, preferably 25~35 parts by weight.In the present invention
In, the water is preferably fresh water.In the present invention, the water carries out hydrated reaction of cement sufficiently, makes various cement additives
It is effectively dissolved in cement slurry, and plays a role.
The present invention does not have special limitation to the preparation method of the leak-stopping cement mortar, using known to those skilled in the art
Composition preparation technical solution, by G class g cement described in above-mentioned technical proposal, nano silica, liquid silicon, silicon powder is ultra-fine
Slag, dispersing agent, retarder and water mixing.
In the present invention, the preparation method of the leak-stopping cement mortar preferably includes following steps:
By G class g cement, silicon powder, retarder and ultrafine slag mixing, mixed-powder is obtained；
By nano silica, liquid silicon, dispersing agent and water mixing, mixed slurry is obtained；
The mixed-powder is mixed with mixed slurry, obtains leak-stopping cement mortar.
The present invention preferably by nano silica, liquid silicon, dispersing agent and water mixing, obtains mixed slurry.In the present invention,
The nano silica is preferably added in the form of an emulsion.In the present invention, the solid content of the lotion is preferably 10~20%,
More preferably 14~16%.The present invention does not have special restriction to the preparation method of the lotion, using those skilled in the art
The well known technical solution for preparing dispersion liquid.In the present invention, it is preferred to nano silica be mixed with water, through ultrasound point
It dissipates and obtains lotion.
In order to further illustrate the present invention, leak-stopping cement mortar provided by the invention is carried out in detail below with reference to embodiment
Description, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1:
Formula: 100 parts of G class g cement, 8.3 parts of nano silica, 5 parts of liquid silicon, 25 parts of silicon powder, ultrafine slag
10 parts, 1 part of acetonformaldehyde condensation product, 1 part of retarder, 40 parts of fresh water.
Preparation method: required solid material is pre-mixed uniformly for use, after being uniformly mixed fluent material, is added
The solid material being pre-mixed, and it is uniformly mixing to obtain leak-stopping cement mortar.
It is tested for the property according to well cementation testing standard API10B-2-2005 leak-stopping cement mortar, result such as 1 institute of table
Show.
Embodiment 2:
Formula: 100 parts of G class g cement, 5 parts of nano silica, 20 parts of liquid silicon, 25 parts of silicon powder, ultrafine slag
10 parts, 1 part of acetonformaldehyde condensation product, 1 part of retarder, 30 parts of fresh water.
Preparation method: required solid material is pre-mixed uniformly for use, after being uniformly mixed fluent material, is added
The solid material being pre-mixed, and it is uniformly mixing to obtain leak-stopping cement mortar.
It is tested for the property according to well cementation testing standard API10B-2-2005 leak-stopping cement mortar, result such as 1 institute of table
Show.
Embodiment 3:
Formula: 100 parts of G class g cement, 5 parts of nano-silicon, 20 parts of liquid silicon, 25 parts of silicon powder, 10 parts of ultrafine slag, first
1 part of aldehyde condensation of acetone object, 1 part of retarder, 20 parts of fresh water.
Preparation method: required solid material is pre-mixed uniformly for use, after being uniformly mixed fluent material, is added
The solid material being pre-mixed, and it is uniformly mixing to obtain leak-stopping cement mortar.
It is tested for the property according to well cementation testing standard API10B-2-2005 leak-stopping cement mortar, result such as 1 institute of table
Show.
Embodiment 4:
Formula: 100 parts of G class g cement, 30 parts of silicon powder, 10 parts of ultrafine slag, 1 part of acetonformaldehyde condensation product, lemon
1 part, 25 parts of fresh water of lemon acid.
Preparation method: required solid material is pre-mixed uniformly for use, after being uniformly mixed fluent material, is added
The solid material being pre-mixed, and it is uniformly mixing to obtain leak-stopping cement mortar.
It is tested for the property according to well cementation testing standard API10B-2-2005 leak-stopping cement mortar, result such as 1 institute of table
Show.
The curing performance for the leak-stopping cement mortar that 1 embodiment of the present invention of table obtains
" 110 DEG C of compression strength " in table 1 is that the cement measured after 48h cooling is conserved in 110 DEG C, 22MPa curing autoclave
The intensity of stone.
As can be seen from the above embodiments, leak-stopping cement mortar viscosity provided by the invention is low, good fluidity, curing time
It is short, there is very high intensity, bearing capacity is strong after solidification.
The above is only a preferred embodiment of the present invention, it is not intended to limit the present invention in any form.It should
It points out, for those skilled in the art, without departing from the principle of the present invention, if can also make
Dry improvements and modifications, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (7)
1. a kind of leak-stopping cement mortar, composed of the following components:
The diameter of the nano silica is no more than 30nm；The use state of the nano silica is nano silica
Lotion；The solid content of the nanometer titanium dioxide silicon emulsion is 10~20%.
2. leak-stopping cement mortar according to claim 1, which is characterized in that composed of the following components:
3. leak-stopping cement mortar according to claim 1 or 2, which is characterized in that active silica is flat in the liquid silicon
Equal partial size is 0.3~0.8 μm.
4. leak-stopping cement mortar according to claim 1 or 2, which is characterized in that the granularity of the silicon powder is 100~300 mesh.
5. leak-stopping cement mortar according to claim 1 or 2, which is characterized in that the specific surface area of the ultrafine slag is not
Lower than 500m2/kg。
6. leak-stopping cement mortar according to claim 1 or 2, which is characterized in that the dispersing agent includes acetonformaldehyde condensation
One of object, naphthalene sulfonic salt and fatty acid dispersing agent are a variety of.
7. leak-stopping cement mortar according to claim 1 or 2, which is characterized in that the retarder include citric acid, boric acid and
One of organic phosphate is a variety of.
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| 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 |
| CN108531146B (en) * | 2018-06-15 | 2021-03-09 | 中煤科工集团重庆研究院有限公司 | Drilling leakage-stopping liquid and preparation method thereof |
| CN110228975B (en) * | 2019-07-15 | 2021-01-29 | 浙江吉泰混凝土有限公司 | Preparation process of cement paste |
| CN110218555B (en) * | 2019-07-15 | 2020-11-20 | 大庆天工开物能源科技有限公司 | Cement paste for petroleum engineering |
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| 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 |
| CN105567192A (en) * | 2014-10-13 | 2016-05-11 | 中国石油化工股份有限公司 | Nanometer silica emulsion for well cementation, and preparation method and application thereof |
| 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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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 |