CN104312558A - Metakaolin waterborne suspension liquid, preparation method and application of suspension liquid and cement paste for well cementing in oil field - Google Patents
Metakaolin waterborne suspension liquid, preparation method and application of suspension liquid and cement paste for well cementing in oil field Download PDFInfo
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- CN104312558A CN104312558A CN201410641932.4A CN201410641932A CN104312558A CN 104312558 A CN104312558 A CN 104312558A CN 201410641932 A CN201410641932 A CN 201410641932A CN 104312558 A CN104312558 A CN 104312558A
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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
- 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
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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
- C09K8/473—Density reducing additives, e.g. for obtaining foamed cement compositions
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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- Ceramic Engineering (AREA)
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
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Abstract
The invention provides metakaolin waterborne suspension liquid which comprises the following raw materials: metakaolin, a dispersant, a suspension stabilizer, a microbicide and de-ionized water, wherein based on the weight of the metakaolin, the weight percentages of the dispersant, the suspension stabilizer, the microbicide and the de-ionized water are 0.1%-1%, 0.1%-0.5%, 0.1%-0.3% and 100%-112% respectively. The invention further provides a method for preparing the metakaolin waterborne suspension liquid and cement paste for well cementing in an oil field. The metakaolin waterborne suspension liquid provided by the invention is high in solid content, low in viscosity and stable to store.
Description
Technical field
The present invention relates to a kind of metakaolin waterborne suspension and its preparation method and application and a kind of reinforcing oil well grout.
Background technology
Well cementation is the important operation in drilling process.Well cementation also claims cementing, namely usually prepares grout by silicate cement, cement additive and water, and injects the annular space that stratum and sleeve pipe form, and plays the effects such as stratum Inter-zonal packing and fixed sleeving.Cement slurry property affects one of cementing quality important factor.For ocean deepwater surface casing cementing, strength development is slow, parting pressure is low for grout low temperature (about 25 DEG C), sometimes go back adjoint Shallow fluid etc., constitutes to the technological challenge in deepwater oil-gas development.With complementary gelling material Some substitute cement such as micro mist, flyash, slag, rice-straw ash, metakaolins, following effect can be obtained: (1) complementary gelling material is due to its pozzolanic reaction, there is the effect of refinforced cement stone intensity, and particularly evident at low temperatures, be specially adapted to low temperature, containing the stratum well cementing operation of shallow-layer stream; (2) complementary gelling material water requirement is compared cement and is wanted large, to have mud yield height and low-density feature after complementary gelling material Some substitute cement, is applicable to the stratum well cementing operation of low parting pressure.Therefore, complementary gelling material is important extra material of cementing the well, and wherein metakaolin is one of of paramount importance extra material.
Metakaolin (Metakaolin is called for short MK) is with kaolin (Al
2o
32SiO
22H
2o, AS
2h
2) be raw material, (600-900 DEG C) is through the anhydrous aluminium silicate (Al of dehydration formation at moderate temperatures
2o
32SiO
2, AS
2).Metakaolin molecular arrangement is irregular, presents thermodynamics and to be situated between steady state, under suitably exciting, have gelling; Manufacturing the energy consumption of metakaolin and carbon emission, to compare cement little; The Behavior of Hardened Cement Paste mixing metakaolin outward in raising intensity, improve toughness, anti-carbonization, nonshrink and suppress, in alkali pasc reaction etc., there is outstanding advantage.Therefore, the active extra material of metakaolin Chang Zuowei or Some substitute cement, in cement-based material.
For reinforcing oil well operation, metakaolin and cement are dry mixed by a certain percentage, in mixing, easily produce airborne dust, and this is large to operator's damage to person, and there is the inhomogenous problem of mixing.For marine well cementing operation, on the one hand, due to platform cement storage tank limited amount, frequent existence bulk cement storage tank not more than needed deposits the situation of mixture cement, on the one hand, for unspent mixture cement, owing to being not suitable with the well cementation of other well section, there is the phenomenon of discarded mixture cement.The additive of liquid form has and is easy to transport and lifting, depositing and use all convenient than the additive of powder.Additive in liquid form is more favored for offshore oilfield operation.Therefore, the metakaolin waterborne suspension preparing high solids content is significant to Yu Haiyang well cementation.
Metakaolin waterborne suspension is similar to SILICA FUME waterborne suspension (being called for short: silicon is starched), all belong to the waterborne suspension of high reactivity supplementary cementitious material, but the two has difference in essence, the former is artificial silica-alumina material, and the latter is the flue dust collected in ferro-silicon smelting, its composition is mainly silicon-dioxide.Preparation method for silicon slurry has:
The people such as Charles E.Cronwell (US4321243,1982) disclose and adopt acid or sequestrant sequestrants such as (as:) acetic acid, sulfuric acid, hydrochloric acid and EDTA to process SILICA FUME, thus prepare the method for silicon slurry.
The people (JP60129132,1985) such as Udagawa Hideyuki disclose and adopt naphthalene sulfonic salt formaldehyde condensation products, sulfonation melamino-for maldehyde condenses, vinylformic acid ammonium salt to be dispersion agent, prepare silicon slurry.
The people (US4888058,1989) such as Arnold M.Rosenberg disclose and adopt polyphosphoric acid, citric acid, hydrofluoric acid and salt thereof to be stablizer, prepare silicon slurry.
The people (US5176752,1993) such as Paul Scheiner disclose and adopt alcohol AMP-95 (Dow Chemicals), prepare silicon slurry.
The people (JP8333144,1996) such as Sakai Etsuro disclose and to adopt with the multipolymer of unsaturated carboxylic acid monomer and the unsaturated monomer containing cycloaliphatic ring or phenyl ring as dispersion agent, prepare silicon slurry.
The people (JP2002137947,2002) such as Kotabe Yuichi disclose and adopt poly carboxylic acid ammonium salt to be dispersion agent, prepare silicon slurry.
The people (JP2007161531,2007) such as Koide Takao disclose the carboxylic acid (Oxycarboxylie acid) of ketone or aldehyde as dispersion agent, prepare silicon slurry.
The people (JP2007326727,2007) such as Ono Akira disclose and adopt poly styrene sulfonate to be dispersion agent, prepare silicon slurry.
The people (US7393407B2,2008) such as Eldar O Dingsoyr disclose and adopt biological polyoses xanthan gum to be suspension stabilizer, prepare silicon slurry etc.
Above-mentioned disclosed method can not prepare the metakaolin waterborne suspension of high solids content, stable storing.
In addition, people (CN1260769A, 1998 such as Anthony Hales; WO98/57905,1998) disclose the method preparing metakaolin waterborne suspension, it is thickening material that the method adopts with polysaccharide, be that metakaolin waterborne suspension prepared by sterilant with sodium hydroxide regulation system pH for 7.5-9.5 and with isothiazolinone.Find in an experiment, prepare metakaolin aqueous suspension fluid viscosity in this approach very large, and there is the blob of viscose that cannot recover afterwards more than one week in the shelf lives.
Summary of the invention
The object of this invention is to provide a kind of metakaolin waterborne suspension.Metakaolin aqueous suspension fluid solid content provided by the invention is high, viscosity is low, stable storing.
Another object of the present invention is to provide a kind of method preparing above-mentioned metakaolin waterborne suspension.By method of the present invention, can obtain that solid content is high, viscosity is low, the metakaolin waterborne suspension of stable storing.
Another object of the present invention is to provide the application of above-mentioned metakaolin waterborne suspension in reinforcing oil well grout, the application particularly at sea in surface casing cementing grout.
Another object of the present invention is to provide a kind of reinforcing oil well grout.
Metakaolin waterborne suspension provided by the invention comprises metakaolin, dispersion agent, suspension stabilizer, sterilant and deionized water, wherein, based on the weight of described metakaolin, the content of described dispersion agent is 0.1-1 % by weight, the content of described suspension stabilizer is 0.1-0.5 % by weight, the content of described sterilant is 0.1-0.3 % by weight, and the content of described deionized water is 100-112 % by weight.
According to the present invention, in described metakaolin waterborne suspension, the content of described metakaolin, described dispersion agent, described suspension stabilizer and described sterilant can obtain in above-mentioned scope that solid content is high, viscosity is low, the metakaolin waterborne suspension of stable storing.Under preferable case, based on the weight of described metakaolin, the content of described dispersion agent is 0.2-0.8 % by weight, and the content of described suspension stabilizer is 0.2-0.4 % by weight, and the content of described sterilant is 0.1-0.25 % by weight.
According to the present invention, described metakaolin can be well known by persons skilled in the art any one can be used in cement-based material strengthen metakaolin product.Under preferable case, described metakaolin is with kaolin (Al
2o
3﹒ 2SiO
2﹒ 2H
2o, AS
2h
2) be raw material, (such as: 600-900 DEG C) is through the anhydrous aluminium silicate (Al of dehydration formation at moderate temperatures
2o
3﹒ 2SiO
2, AS
2), then through metakaolin that grinding obtains.The preparation of metakaolin can with reference to the manufacture method of the disclosed metakaolin of Imerys company (US20080264295A1).
For the metakaolin that cement-based material strengthens, its technical indicator can comprise following three aspects:
(1) chemical composition, comprises SiO
2, Al
2o
3and the content of other oxide impurity;
(2) granularity and specific surface area, granularity is little, specific surface area is large, and metakaolin reactive behavior is high;
(3) pozzolanic activity index, adopts Chapell test method, test metakaolin fixation of C a (OH) usually
2quality represent the pozzolanic activity of metakaolin.
Be suitable for the technical indicator of metakaolin of the present invention in table 1.
The technical indicator of table 1 metakaolin
According to an embodiment of the invention, according to embodiment of the present invention, described dispersion agent plays wetting and dispersion metakaolin particle.Dispersion agent can adopt polyelectrolyte.Polyelectrolyte is mainly anionic charge water-soluble polymer, as the alkali metal salts or ammonium salt of polyacrylic alkali metal salts or ammonium salt and/or vinylbenzene and toxilic acid.Further preferred dispersants is polyacrylic alkali metal salts or ammonium salt.
According to the present invention, described dispersion agent can realize object of the present invention in above-mentioned content range, under preferable case, in described metakaolin waterborne suspension, based on the weight of described metakaolin, when the content of described dispersion agent is 0.6 % by weight, described dispersion agent to the wetting of described metakaolin and dissemination better.
According to an embodiment of the invention, described suspension stabilizer be selected from the high molecular weight water soluble polymers such as ether of cellulose, biological polyoses and synthetic polymer one or more.Under preferable case, described ether of cellulose can be selected from hydroxyethyl ether cellulose (HEC), methyl cellulose ether (MC), ethyl cellulose ether (EC) and TYLOSE 30000 (CMC) one or more.Described biological polyoses can be selected from xanthan gum, warm human relations glue and carrageenin one or more.Described synthetic polymer of the present invention can be well known by persons skilled in the art any one can with the synthetic polymer of used as stabilizers.Under preferable case, described synthetic polymer is as being selected from during suspension stabilizer of the present invention with one or more in 2-acrylamide-2-methyl propane sulfonic (AMPS) be principal monomer synthetic polymer, polyvinyl alcohol (PVA) and polyvinylpyrrolidone (PVP).More preferably, in situation, described suspension stabilizer is selected from polyvinylpyrrolidone and/or xanthan gum.Preferred xanthan gum is as described suspension stabilizer further.
According to the present invention, described suspension stabilizer can realize object of the present invention in above-mentioned content range, under preferable case, in described metakaolin waterborne suspension, based on the weight of described metakaolin, when the content of described suspension stabilizer is 0.3 % by weight, described suspension stabilizer improves the stability of metakaolin at water-based system, prevents layering and precipitation from grabbing the effect of end phenomenon better.
According to the present invention, described sterilant can be that well known by persons skilled in the art any one has the sterilant of sterilization effect.Under preferable case, described sterilant is selected from isothiazolinone.More preferably in situation, described sterilant be selected from CMIT (CMIT), MIT (MIT) and BIT (BIT) one or more.
According to the present invention, described sterilant can realize object of the present invention in above-mentioned content range, under preferable case, in described metakaolin waterborne suspension, based on the weight of described metakaolin, when the content of described sterilant is 0.15 % by weight, the better effects if that the raw bacterium of aqueous suspension system of described Fungicidal control metakaolin is smelly.
According to the present invention, described deionized water can be industrial deionized water well known by persons skilled in the art.Under preferable case, described ion resistivity of water is less than 20us/cm and (strictly controls divalent cation, as Ca
2+, Mg
2+deng).Preferred above-mentioned deionized water, is conducive to preventing metakaolin aqueous suspension system from producing gelling.
The present inventor finds through a large amount of experiments, and described metakaolin waterborne suspension provided by the invention, when without the need to regulating its pH value, namely can obtain that solid content is high, viscosity is low, the effect of stable storing.Facts have proved, when as CN1260769A patent application the employing sodium hydroxide of being instructed regulate pH to be 7.5-9.5 time, be unfavorable for the stable of system on the contrary.This may be because calcium ion remaining in metakaolin waterborne suspension and alkali produce lime, lime react with metakaolin again produce crosslinked caused by.
In addition, under preferable case of the present invention, described metakaolin waterborne suspension also can contain alcamines organic bases.When described alcamines organic bases is as pH adjusting agent, obtain the effect that solid content is high, viscosity is low, storage is more stable.This may be owing to adopting alcamines organic bases can be avoided and the component generation crosslinked action in metakaolin waterborne suspension.Described alcamines organic bases is preferably 2-amino-2-methyl-1-propanol (such as, the AMP-95 product of DOW Chemical).Described alcamines organic bases can be selected according to actual needs as the content of pH adjusting agent.Under preferable case, in described metakaolin waterborne suspension, based on the weight of described metakaolin, the content of described alcamines organic bases is 0.05-0.1 % by weight.When adopting described alcamines organic bases to regulate the pH value of described metakaolin waterborne suspension to be 7-8, be more conducive to obtaining the effect that solid content is high, viscosity is low, storage is more stable.
According to the present invention, the method preparing above-mentioned metakaolin waterborne suspension comprises and being mixed under agitation by the deionized water of the suspension stabilizer of the dispersion agent of the metakaolin of described amount, described amount, described amount, the sterilant of described amount and described amount.
According to the present invention, the method preparing above-mentioned metakaolin waterborne suspension can comprise and being mixed under agitation by the alcamines organic bases of the sterilant of the suspension stabilizer of the dispersion agent of the metakaolin of described amount, described amount, described amount, described amount, the deionized water of described amount and described amount.
According to the present invention, under preferable case, the method preparing above-mentioned metakaolin waterborne suspension can comprise and slowly adds in the deionized water of described amount by the suspension stabilizer of described amount under agitation; Add the metakaolin of the dispersion agent of described amount, the sterilant of described amount and described amount more successively; Namely described metakaolin waterborne suspension is obtained.By controlling the order of addition of each component, the metakaolin waterborne suspension that storage is more stable can be obtained.
According to the present invention, when described metakaolin waterborne suspension is also containing alcamines organic bases, described alcamines organic bases preferably finally adds the final ph of the described metakaolin waterborne suspension regulating preparation.
According to the present invention, under agitation the suspension stabilizer of described amount is slowly added in the deionized water of described amount, prevent suspension stabilizer to be difficult to dissolved gum grain owing to adding too fast causing.
Present invention also offers the application of above-mentioned metakaolin waterborne suspension in reinforcing oil well grout, the application particularly at sea in deep water surface casing cementing grout.
Described metakaolin waterborne suspension provided by the invention, can accelerate the development of intensity under grout low temperature.For the grout of marine deep water surface casing cementing, the major technical challenge faced is that under silicate cement low temperature, aquation is slow and formation-parting pressure is low, and this just requires that grout has low density performance strong early.Add metakaolin in grout, supporting alkali-activator, can obtain the performance that the high and low density of grout mud yield is strong early simultaneously.
Present invention also offers a kind of reinforcing oil well grout, this grout comprises cement, above-mentioned metakaolin waterborne suspension, alkali-activator and water.Wherein, based on the weight of described cement, the content of described metakaolin waterborne suspension is 5-30 % by weight, and the content of described alkali-activator is 1-5 % by weight, and the content of described water is 40-70 % by weight.
According to the present invention, described alkali-activator is preferably: one or more in carbonate, vitriol and silicate, more preferably silicate (as water glass), and being further preferably modulus is the water glass of 1, i.e. Starso.
In the present invention, cement, metakaolin waterborne suspension, alkali-activator and water can be mixed with according to method known to those skilled in the art by described reinforcing oil well grout, and the present invention does not have particular requirement.
According to the present invention, described reinforcing oil well grout can also contain other useful reagent well known by persons skilled in the art, such as defoamer, well cementation water retaining, dispersion agent, hardening accelerator, superfine cement mixing material etc., its addition and addition sequence those skilled in the art also can select according to prior art.The present invention does not repeat them here.
Embodiment
The present invention is described in further detail below, puts into practice the present invention to enable those skilled in the art.Should be appreciated that and can adopt other embodiments, and suitable change can be made and do not depart from the spirit or scope of the present invention.In order to avoid for enabling those skilled in the art put into practice details unnecessary the present invention, specification sheets may eliminate some known to those skilled in the art information.Therefore, below describe in detail and should not understand with restrictive meaning, and scope of the present invention is only defined by claims.
Metakaolin is purchased from Jiaozuo City Yu Kun mining industry company limited.
In following examples, except special instruction, the reagent used is all from being purchased.
The preparation of embodiment 1 metakaolin waterborne suspension
Under whipped state, suspension stabilizer is slowly added in the deionized water in slurry cup, after continuing to stir 15min, until suspension stabilizer fully dissolve with thickening after, add dispersion agent, sterilant and metakaolin successively, obtain metakaolin waterborne suspension B, its composition and stability as shown in table 2.
The preparation of embodiment 2 and 3 metakaolin waterborne suspension
Under whipped state, suspension stabilizer is slowly added in the deionized water in slurry cup, after continuing to stir 15min, until suspension stabilizer fully dissolve with thickening after, add dispersion agent, sterilant and metakaolin successively, finally add alcamines organic bases, obtain metakaolin waterborne suspension C and D.Embodiment 2 and 3 gained metakaolin waterborne suspension is corresponding in turn to metakaolin waterborne suspension C and D, its composition and stability as shown in table 2.
Comparative example 1
The method identical with embodiment 1 is adopted to prepare metakaolin waterborne suspension, unlike, do not add suspension stabilizer.Composition and the stability of gained metakaolin waterborne suspension A are as shown in table 2.
Comparative example 2
Prepare metakaolin waterborne suspension E according to the method disclosed in CN1260769A, its composition and stability as shown in table 2.
Table 2
Note: "-" indicates and to represent without, "/" and do not measure; " * " represents according to on-the-spot mud evaluation (water-base drilling fluid, the second edition) standard test of ISO10414-1:2008;
600 is polyacrylic acid dipersant (German BK Giulini company); KF-20 is isothiazolinone anticorrosion and bactericidal agent (Beijing Orient Ao Han chemical company); AMP-95 is alcohol amine compound (Dow Chemical company).
As can be seen from Table 2, when metakaolin aqueous suspension fluid solid content provided by the invention reaches 50-55g weight, the slurry apparent viscosity of room temperature storage after 1 day is only up to 69mPa.s, and 40 DEG C to store after 3 months slurry without sedimentation.And metakaolin waterborne suspension A is not when having suspension stabilizer, though can slurry be prepared, storing after one day, just sedimentation occurring; And adopt the method for CN1260769A embodiment 1, cannot slurry be prepared.
The preparation of embodiment 4 reinforcing oil well grout
Metakaolin waterborne suspension C embodiment 2 prepared, be mixed with grout according to table 3, cement slurry property is in table 3.
The evaluation of table 3 mortar architecture
*
Note: the preparation of " * " cementing concrete slurry and performance evaluation are according to API R 10B oil well cement measuring method.API G cement comes from Zibo Zhong Chang special cement company limited, PC-X601L is phosphoric acid ester well cementation defoamer, PC-G70L to be effective concentration be 10% PVA class well cementation water retaining, PC-F40L is sulfonation condensation class well cementation dispersion agent, PC-A92S is alcamines liquid hardening accelerator, PC-A93L is chlorination salt solid hardening accelerator, and PC-BT-1 is superfine cement mixing material, and above each reagent all takes chemical company's product from Tianjin CNOOC.SS-1 to be modulus be 1 metasilicate pentahydrate sodium, from Zichuan, Zibo, Shandong Province gold and jade Chemical Co., Ltd., C in the metakaolin waterborne suspension that MK-L (C) is prepared for example 2.In table 3, PC-P62 is artificial glass microballon lightening material.Without lightening material, the cement slurry (as formula I II) that density is 1.80SG can be obtained, use lightening material PC-P63S, the cement slurry (as filled a prescription V) that density is 1.40SG can being obtained.
As can be seen from Table 3, the metakaolin waterborne suspension prepared according to the method disclosed in the present, at low-density cement mortar (1.40g/cm
3) and conventional density grout (1.80g/cm
3) in, all have and improve Behavior of Hardened Cement Paste strong intensity morning and grout is had no adverse effects.In grout, add alkali-activator again, refinforced cement stone early strong intensity has more palpability.
In sum; these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, therefore; all any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a metakaolin waterborne suspension, it comprises metakaolin, dispersion agent, suspension stabilizer, sterilant and deionized water, wherein, based on the weight of described metakaolin, the content of described dispersion agent is 0.1-1 % by weight, the content of described suspension stabilizer is 0.1-0.5 % by weight, and the content of described sterilant is 0.1-0.3 % by weight, and the content of described deionized water is 100-112 % by weight.
2. metakaolin waterborne suspension according to claim 1, wherein, based on the weight of described metakaolin, the content of described dispersion agent is 0.2-0.8 % by weight, the content of described suspension stabilizer is 0.2-0.4 % by weight, and the content of described sterilant is 0.1-0.25 % by weight.
3. metakaolin waterborne suspension according to claim 1 and 2, wherein, described metakaolin fixation of C a (OH)
2total mass number is more than or equal to 1100mg Ca (OH)
2/ g, 325 screen residues are less than or equal to 0.005 % by weight, and the granularity of the particle of at least 80 % by weight is less than or equal to 2 μm.
4. metakaolin waterborne suspension according to claim 1 and 2, wherein, described dispersion agent is polyacrylic alkali metal salts or ammonium salt.
5. metakaolin waterborne suspension according to claim 1 and 2, wherein, described suspension stabilizer be selected from ether of cellulose, biological polyoses and synthetic polymer one or more; Described sterilant be selected from CMIT, MIT and BIT one or more.
6. metakaolin waterborne suspension according to claim 1 and 2, wherein, described metakaolin waterborne suspension is also containing alcamines organic bases; Wherein, based on the weight of described metakaolin, the content of described alcamines organic bases is 0.05-0.1 % by weight.
7. prepare a method for the metakaolin waterborne suspension in claim 1-5 described in any one, the method comprises and being mixed under agitation by the deionized water of the suspension stabilizer of the dispersion agent of the metakaolin of described amount, described amount, described amount, the sterilant of described amount and described amount.
8. prepare a method for metakaolin waterborne suspension according to claim 6, the method comprises and being mixed under agitation by the alcamines organic bases of the sterilant of the suspension stabilizer of the dispersion agent of the metakaolin of described amount, described amount, described amount, described amount, the deionized water of described amount and described amount.
9. the metakaolin waterborne suspension in a claim 1-6 described in any one or the application of metakaolin waterborne suspension in reinforcing oil well grout prepared by the method described in claim 7 or 8.
10. a reinforcing oil well grout, this grout comprises metakaolin waterborne suspension, alkali-activator and water in cement, claim 1-6 described in any one; Wherein, based on the weight of described cement, the content of described metakaolin waterborne suspension is 5-30 % by weight, and the content of described alkali-activator is 1-5 % by weight, and the content of described water is 40-70 % by weight.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295503A (en) * | 2015-11-20 | 2016-02-03 | 中国高岭土有限公司 | Medicament composition for improving suspension degree of kaolin slurry and preparation method thereof |
| CN105385427A (en) * | 2015-10-30 | 2016-03-09 | 卫辉市化工有限公司 | Ocean deep water surface layer cementing cement paste system and preparing method thereof |
| CN106186981A (en) * | 2016-07-26 | 2016-12-07 | 苏州秉创科技有限公司 | A kind of construction material printed for 3D |
| CN111635672A (en) * | 2020-05-26 | 2020-09-08 | 东联北方科技(北京)有限公司 | Waterproof mortar emulsion and preparation method thereof |
| CN116003021A (en) * | 2022-11-29 | 2023-04-25 | 南方海洋科学与工程广东省实验室(湛江) | Cement slurry suspension reinforcing agent and cement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105385427A (en) * | 2015-10-30 | 2016-03-09 | 卫辉市化工有限公司 | Ocean deep water surface layer cementing cement paste system and preparing method thereof |
| CN105295503A (en) * | 2015-11-20 | 2016-02-03 | 中国高岭土有限公司 | Medicament composition for improving suspension degree of kaolin slurry and preparation method thereof |
| CN106186981A (en) * | 2016-07-26 | 2016-12-07 | 苏州秉创科技有限公司 | A kind of construction material printed for 3D |
| CN111635672A (en) * | 2020-05-26 | 2020-09-08 | 东联北方科技(北京)有限公司 | Waterproof mortar emulsion and preparation method thereof |
| CN116003021A (en) * | 2022-11-29 | 2023-04-25 | 南方海洋科学与工程广东省实验室(湛江) | Cement slurry suspension reinforcing agent and cement |
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| Publication number | Publication date |
|---|---|
| CN104312558B (en) | 2017-03-08 |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |