CN106554766B - Anti-channeling lotion, well cementation leakage-proof mud and preparation method thereof - Google Patents
Anti-channeling lotion, well cementation leakage-proof mud and preparation method thereof Download PDFInfo
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- CN106554766B CN106554766B CN201510627996.3A CN201510627996A CN106554766B CN 106554766 B CN106554766 B CN 106554766B CN 201510627996 A CN201510627996 A CN 201510627996A CN 106554766 B CN106554766 B CN 106554766B
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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
- C09K8/493—Additives for reducing or preventing gas migration
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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
- 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
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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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- 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
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of nano silica anti-channeling lotions for cementing slurry, it is characterized in that, for the particle diameter distribution of nanometer silicon dioxide particle in the range of 9nm to 310nm, average grain diameter is in the range of 80nm to 120nm in the nano silica anti-channeling lotion.The invention further relates to a kind of cement slurries and preparation method thereof.
Description
Technical field
The present invention relates to a kind of lotion more particularly to a kind of lotions for Oil-Gas Well Engineering.The invention further relates to one kind
Cement slurry and preparation method thereof.
Background technique
Currently, natural gas well well cementation faces anti-channeling difficulty and also gets over as the fields such as ultra deep, unconventional are moved towards in oil-gas exploration
Come bigger, all there is a problem of that annular space is with pressure after the well cementation of many natural gas wells.Gas channeling prevention well cementing cement slurry is in cement slurry mostly
It is middle that latex is added to improve the anti-channeling performance of cement slurry.But latex anti fluid channeling cement pulp noodle face that cement slurry sensibility is strong, leads to glue
Newborn dosage is inadequate, and density is not easy to control when easy to foaming, extemporaneous preparation cement slurry, cannot effectively inhibit has channeling.Therefore, originally
Field needs a kind of new anti-channeling substance for cementing slurry.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the present inventor passes through many experiments unexpectedly
It was found that a kind of completely new nano silica anti-channeling lotion for cementing slurry being capable of effective anti-channeling.
It is an advantage of the invention to provide a kind of nano silica anti-channeling lotion for cementing slurry,
It is characterized in that, model of the particle diameter distribution of nanometer silicon dioxide particle in 9nm to 310nm in the nano silica anti-channeling lotion
In enclosing, average grain diameter is in the range of 80nm to 120nm.Nanometer with particle diameter distribution defined by the present invention and average grain diameter
Silica anti-channeling lotion can be closely filled between cement granules, to play the purpose of anti-channeling.
In a preferred embodiment of the invention, the nano silica anti-channeling lotion is by different-grain diameter
The nano silica of (10nm, 100nm, 200nm, 300nm), water powder, complexing agent, water-soluble alcohol, emulsifier, defoaming
Agent, surface treating agent, pH adjusting agent composition, adjust the content of the nano silica of different-grain diameter so that nano silica
The particle diameter distribution of nanometer silicon dioxide particle is in the range of 9nm to 310nm in anti-channeling lotion, average grain diameter 80nm extremely
In the range of 120nm；Preferably, the content of the nano silica of different-grain diameter is adjusted so that nano silica anti-channeling cream
The particle diameter distribution of nanometer silicon dioxide particle is in the range of 9nm to 210nm in liquid, model of the average grain diameter in 95nm to 105nm
In enclosing.In a preferred embodiment of the invention, in the nano silica anti-channeling lotion:
(1) effective content of nano silica is 40-50 weight %, preferably 44-46 weight %；
(2) dispersing agent, complexing agent, water-soluble alcohol, emulsifier, defoaming agent, table in nano silica anti-channeling lotion
The quality proportioning of surface treatment agent and nano silica is as follows:
Dispersing agent: nano silica=0.1-1%
Complexing agent: nano silica=0.1-1%
It is dissolved in the alcohol of water: nano silica=0.1-5%
Emulsifier: nano silica=0.1-2%
Defoaming agent: nano silica=0.1-1%
Surface treating agent: nano silica=0.1-8%
(3) pH adjusting agent additional amount can make the pH value of initial pure water reach 4-6；
(4) viscosity < 0.15Pas. of product
In a preferred embodiment of the invention, the dispersing agent is a kind of macromolecule dispersing agent, is commonly
Polyethers ammonium sulfate (Guangzhou warm and International Trading Company Ltd).
In a preferred embodiment of the invention, the complexing agent is ethylenediamine tetra-acetic acid (EDTA), ethylenediamine
Tetraacetate (EDETATE SODIUM or trisodium), ethylenediamine tetraacetic methene phosphate (EDTMPS), diethylene triamine pentamethylene phosphonic salt
(DETPMPS), one of three methene phosphate of amine or more than one.
In a preferred embodiment of the invention, water-soluble alcohol is commonly methanol, ethylene glycol,
Propyl alcohol, ethyl alcohol, diethylene glycol, glycerine, propylene glycol.
In a preferred embodiment of the invention, the emulsifier is oil-in-water type surfactant, commonly
For polyoxyethylene 20 sorbitan monolaurate, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol
Single hard acid esters, polyoxyethylene sorbitan monooleate, dodecyl sodium sulfate, aliphatic acid polyethenoxy ether, dodecane
Base sodium sulphate, neopelex, polyoxyl 40 stearate, enuatrol, polyoxyethylene cetyl base alcohol, polyoxy second
Alkene monolaurate, polyoxyethylene laurel ether, polyoxyethylene oleyl ether, alkyl phenol and ethylene oxide condensation product (OP series) its
One of or more than one.
In a preferred embodiment of the invention, the defoaming agent is dimethicone, tributyl phosphate, polyoxy
Ethylene oxypropylene glycerol, can single use can also be used in compounding.
In a preferred embodiment of the invention, the surface treating agent is commonly three ethoxy of 3- aminopropyl
Base silane, glycidyl ether oxygen propyl trimethoxy silicane, methacryloxypropyl trimethoxy silane, 3,4- epoxide ring
The sixth of the twelve Earthly Branches base ethyl trimethoxy silane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyl methyl dimethyl-silicon
Alkane, methyltrimethoxysilane, methyltriethoxysilane, octyltri-ethoxysilane, isocyanates propyl-triethoxysilicane
Alkane, ureido-propyl trimethoxy silane, ureidopropyltriethoxysilane, vinyl three (2- methoxy ethoxy) silane, ammonia
Propyl trimethoxy silicane, 2- aminoethyl amino propyl trimethoxy silane, divinyl triammonium base propyl trimethoxy silicane, ammonia second
One of base aminopropyl triethoxysilane, aminoethylaminopropyl methyl dimethoxysilane.
In a preferred embodiment of the invention, it is commonly salt that the pH adjusting agent, which is a kind of acidic materials,
One of acid, sulfuric acid, citric acid, nitric acid or more than one.
In a preferred embodiment of the invention, the nano silica anti-channeling lotion is prepared:
PH adjusting agent is added in a in distilled water, adjusts the pH value of water between 4-6.
Dispersing agent is added in aqueous solution a in b；
C makes aqueous solution b and nano silica be sufficiently mixed dispersion in dispersator；
Complexing agent is added in d in mixture c, and stirs evenly；
E enters water-soluble alcohol in mixture c；
Emulsifier is added in f in Mischung, is first dissolved in emulsifier in water；
Defoaming agent is added in g in mixture f, inhibits emulsifier blistering, and stir evenly；
Surface treating agent is added in h in mixture f, and is sufficiently stirred.
In a preferred embodiment of the invention, the application method of aforementioned nano silica anti-channeling lotion: logical
Other additives by the nano silica anti-channeling lotion and oil-well cement are crossed, such as: fluid loss agent, dispersing agent, retarder
Deng, be added directly into oil-well cement in pulp-water.The additional amount of nano silica anti-channeling lotion is 10%.
The feature of nano silica anti-channeling lotion is that average grain diameter is adjustable, and storage maximum temperature is up to 70 DEG C, validity period
Up to 1 year or more.
In a preferred embodiment of the invention, nano silica in the nano silica anti-channeling lotion
The particle diameter distribution of particle may be, for example, in the range of 9nm to 310nm, in the range of 9nm to 300nm, the model of 9nm to 250nm
In enclosing, in the range of 9nm to 200nm, in the range of 9nm to 150nm, in the range of 9nm to 100nm, the model of 9nm to 500nm
In enclosing, in the range of 10nm to 300nm, in the range of 10nm to 250nm, in the range of 10nm to 200nm, 10nm to 150nm
In the range of, in the range of 10nm to 100nm, in the range of 10nm to 500nm, in the range of 20nm to 300nm, 20nm extremely
In the range of 200nm, in the range of 20nm to 100nm, in the range of 50nm to 300nm, in the range of 50nm to 200nm,
In the range of 50nm to 100nm, in the range of 100nm to 300nm, in the range of 100nm to 200nm, 100nm is to 150nm's
In range, in the range of 150nm to 300nm, in the range of 150nm to 300nm, in the range of 150nm to 300nm, 150nm extremely
In the range of 300nm, in the range of 150nm to 200nm, in the range of 200nm to 300nm or the range of 200nm to 250nm
It is interior.
In a preferred embodiment of the invention, nano silica in the nano silica anti-channeling lotion
The average grain diameter of particle may be, for example, in the range of 80nm to 120nm, in the range of 80nm to 110nm, 80nm is to 100nm's
In range, in the range of 80nm to 90nm, in the range of 80nm to 85nm, in the range of 90nm to 120nm, 90nm to 110nm
In the range of, in the range of 90nm to 100nm, in the range of 90nm to 95nm, in the range of 100nm to 120nm, 100nm extremely
In the range of 110nm, in the range of 100nm to 105nm, in the range of 110nm to 120nm, in the range of 115nm to 120nm
Or in the range of 98nm to 102nm.
In a preferred embodiment of the invention, nano silica in the nano silica anti-channeling lotion
For the particle diameter distribution of particle in the range of 9nm to 210nm, average grain diameter is in the range of 95nm to 105nm.
In a preferred embodiment of the invention, the effective solid content of the nano silica anti-channeling lotion is
40-50 weight %, preferably 44-46 weight %.
Nanometer titanium dioxide in a preferred embodiment of the invention, in the nano silica anti-channeling lotion
Silicon particle is spheric granules.The nano silica anti-channeling lotion surface has very high activity, can participate in the water of cement
Change reaction.
It is a further object of the invention to provide a kind of well cementation leakage-proof mud, which is characterized in that the cement slurry
Including above-mentioned nano silica anti-channeling lotion.
In a preferred embodiment of the invention, the cement slurry includes the following:
Oil-well cement, preferably G grades of oil-well cement,
Above-mentioned nano silica anti-channeling lotion,
Fluid loss agent,
Retarder,
Dispersing agent,
Defoaming agent, and
Water.
In a preferred embodiment of the invention, the cement slurry is made of the following:
Oil-well cement, preferably G grades of oil-well cement,
Above-mentioned nano silica anti-channeling lotion,
Fluid loss agent,
Retarder,
Dispersing agent,
Defoaming agent, and
Water.
In a more preferred embodiment of the invention, the cement slurry includes the following:
The oil-well cement of 65-71 mass parts, preferably G grades of oil-well cement,
The above-mentioned nano silica anti-channeling lotion of 5-14.5 mass parts,
The fluid loss agent of 1.3-4 mass parts,
The retarder of 0.07-0.6 mass parts,
The dispersing agent of 0.2-1 mass parts,
The defoaming agent of 0.07-0.3 mass parts, and
The water of 8-28 mass parts.
In an especially preferred embodiment of the invention, the cement slurry is made of the following:
The oil-well cement of 65-71 mass parts, preferably G grades of oil-well cement,
The above-mentioned nano silica anti-channeling lotion of 5-14.5 mass parts,
The fluid loss agent of 1.3-4 mass parts,
The retarder of 0.07-0.6 mass parts,
The dispersing agent of 0.2-1 mass parts,
The defoaming agent of 0.07-0.3 mass parts, and
The water of 8-28 mass parts.
In a preferred embodiment of the invention, the fluid loss agent is the copolymer of AMPS class.
In a preferred embodiment of the invention, the dispersing agent is keto-aldehyde condensation product.
In a preferred embodiment of the invention, the retarder is organic acid.
In a preferred embodiment of the invention, the defoaming agent is organosilicon oils.
In a preferred embodiment of the invention, the density of the cement slurry is in 1.80-1.95g/cm3Range
Interior, the cement slurry has an API dehydration less than 50mL, and static gel strength transit time of cement slurry is less than 20min, anti-channeling because
Sub- SPN value is less than 2.
It is still another object of the present invention to provide a kind of methods for preparing above-mentioned cement slurry, include the following steps:
1) by the water of 8-28 mass parts, the nanometer described in any one of -4 according to claim 1 of 5-14.5 mass parts
Silica anti-channeling lotion, the fluid loss agent of 1.3-4 mass parts, the retarder of 0.07-0.6 mass parts, 0.2-1 mass parts point
Powder, 0.07-0.3 mass parts defoaming agent put into pump circulation at least two hours in storage tank respectively, it is spare that feed liquid is made；
2) oil-well cement of 65-71 mass parts, preferably G grades of oil-well cement are deposited in spare in ash can；
3) above-mentioned feed liquid and oil-well cement are configured to density with cementing equipment according to the mass ratio of 0.5-0.6:1 is
1.80-1.95g/cm3Well cementation leakage-proof mud.
In a preferred embodiment of the invention, the step 1) -3) it can be with any feasible suitable in logic
Sequence carries out, such as step 1) can perhaps step 1) can be later than step 2) progress or step 1) and step prior to step 2) progress
2) it can carry out simultaneously.
In a preferred embodiment of the invention, the fluid loss agent is the copolymer of AMPS class.
In a preferred embodiment of the invention, the dispersing agent is keto-aldehyde condensation product.
In a preferred embodiment of the invention, the retarder is organic acid.
In a preferred embodiment of the invention, the defoaming agent is organosilicon oils.
In a preferred embodiment of the invention, the water is tap water.
In the present invention, unless expressly stated otherwise, ratio herein is mass ratio, and percentage is weight percent
Number.
The beneficial effects of the present invention are:
The cement slurry density range that the present invention prepares is 1.80-1.95g/cm3, there is API dehydration to be less than 50mL, thickening can
Tonality is good, and cement slurry is easily prepared, and static gel strength transit time is less than 20min, and anti-channeling factor S PN value can be effectively played less than 2
Anti-channeling effect, improves the cementing quality of the complex conditions such as superhigh temperature, narrow ' Safe Density Windows.
Specific embodiment
Below with reference to non-limiting specific embodiment, the invention will be further described, but protection scope of the present invention is simultaneously
It is not limited to following embodiments.
Fluid loss agent used in embodiment, retarder, dispersing agent, defoaming agent are the commercial product of this field routine.
Embodiment 1
Hydrochloric acid is added in the distilled water of 270Kg, makes the pH value 4.0 of solution, the polyethers ammonium sulfate of 1kg is added, is added
Silica that 145kg average grain diameter is 10 nanometers, the silica that 40Kg average grain diameter is 100 nanometers, 40Kg average grain diameter
For 200 nanometers of silica, the silica that 25Kg average grain diameter is 300 nanometers, with 1400r/min in stirring dispersion machine
Revolving speed be dispersed with stirring 2 hours, four sodium of 2.5kg edetate is added, stirring dispersion machine stirs with the revolving speed of 1400r/min
After mixing 5min, 7kg ethyl alcohol is added, polyoxyethylene laurel ether 5kg is added in 5.5kg glycerine, and polyoxyethylene oxypropylene glycerol is added
After stirring dispersion machine stirs 5min with the revolving speed of 1400r/min, isocyanate propyl triethoxysilane 20kg is added in 2.5kg,
After stirring dispersion machine is stirred 2 hours with the revolving speed of 1400r/min, obtaining effective solid content is 45% (wt%) nanometer titanium dioxide
Silicon anti-channeling lotion, particle diameter distribution 9-310nm, average grain diameter 80nm.The density of nano silica anti-channeling lotion is
1.38g/cm3, viscosity 0.095Pas, average grain diameter 80nm.At room temperature through in gravitational settling 1 year, nano silica is anti-
Lotion is altered not precipitate and still have mobility.70 DEG C do not precipitated through 6 months nano silica anti-channeling lotions of gravitational settling and
Still there is mobility.
Density is 1.80g/cm3Well cementation leakage-proof mud preparation method (in terms of 10 cubes of cement slurries): 1. incite somebody to action oneself
5.47 tons of water, 0.94 ton of nano silica anti-channeling lotion, 0.24 ton of fluid loss agent, 0.01 ton of retarder, dispersing agent 0.04
Ton, 0.01 ton of defoaming agent put into storage tank respectively pump circulation at least two hours it is spare at feed liquid；2. by G grades 12 tons of oil-well cement
Cement is deposited in spare in cement ash can；3. above-mentioned feed liquid and oil-well cement are matched according to the mass ratio cementing equipment of 0.56:1
Density 1.80g/cm is made3Nanometer titanium dioxide silicon emulsion anti fluid channeling cement slurry obtain well cementation leakage-proof mud.
The cement slurry of preparation is under the conditions of 80 DEG C of * 50Mpa*40min, thickening time 156min, API dehydration 19mL, quiet glue
Solidifying transit time 17min, 48 hours intensity are 25Mpa, and cement slurry anti-channeling factor S PN value is 1.6, the gas permeability of Behavior of Hardened Cement Paste
It is 0.013 × 10-3μm2.
Embodiment 2
Hydrochloric acid is added in the distilled water of 270Kg, makes the pH value 4.0 of solution, the polyethers ammonium sulfate of 1kg is added, is added
Nano silica that 80Kg average grain diameter is 10nm, the silica that 100kg average grain diameter is 100 nanometers, 70Kg are averaged grain
The nano silica that diameter is 200 nanometers, the revolving speed in stirring dispersion machine with 1400r/min are dispersed with stirring 2 hours, are added
After stirring dispersion machine stirs 5min with the revolving speed of 1400r/min, 7kg ethyl alcohol is added in four sodium of 2.5kg edetate,
5.5kg glycerine, be added polyoxyethylene laurel ether 5kg, be added polyoxyethylene oxypropylene glycerol 2.5kg, stirring dispersion machine with
After the revolving speed stirring 5min of 1400r/min, isocyanate propyl triethoxysilane 20kg is added, stirring dispersion machine is with 1400r/
After the revolving speed of min stirs 2 hours, obtaining effective solid content is 45% (wt%) nano silica anti-channeling lotion, average grain
Diameter 100nm.The density of nano silica anti-channeling lotion is 1.38g/cm3, particle diameter distribution 9-210nm, average grain diameter
100nm.At room temperature through in gravitational settling 1 year, nano silica anti-channeling lotion does not precipitate and still has mobility.70 DEG C of warps
6 months nano silica anti-channeling lotions of gravitational settling do not precipitate and still have mobility.
Density is 1.88g/cm3Well cementation leakage-proof mud preparation method (in terms of 10 cubes of cement slurries): 1. incite somebody to action oneself
3.75 tons of water, 2 tons of nano silica anti-channeling lotion, 0.73 ton of filtrate reducer for oil well cement slurry, oil well cement retarder
0.07 ton, 0.13 ton of oil well cement dispersant, 0.04 ton of defoaming agent put into storage tank pump circulation at least two hours respectively into material
Liquid is spare；2. 13.2 tons of cement of G grades of oil-well cements are deposited in spare in cement ash can；3. above-mentioned feed liquid is pressed with oil-well cement
Density 1.90g/cm is configured to cementing equipment according to the mass ratio of 0.51:13Nanometer titanium dioxide silicon emulsion anti fluid channeling cement starch to obtain the final product
To well cementation leakage-proof mud.
The cement slurry of preparation is under the conditions of 80 DEG C of * 50Mpa*40min, thickening time 151min, API dehydration 25mL, quiet glue
Solidifying transit time 16min, 48 hours intensity are 24Mpa, and cement slurry anti-channeling factor S PN value is 1.9, the gas permeability of Behavior of Hardened Cement Paste
It is 0.032 × 10-3μm2.
Embodiment 3
Hydrochloric acid is added in the distilled water of 270Kg, makes the pH value 4.0 of solution, the polyethers ammonium sulfate of 1kg is added, is added
Nano silica that 25Kg average grain diameter is 10nm, the silica that 100kg average grain diameter is 100 nanometers, 100Kg are averaged grain
The nano silica that nano silica that diameter is 200 nanometers, 25Kg average grain diameter are 300nm, in stirring dispersion machine with
The revolving speed of 1400r/min is dispersed with stirring 2 hours, four sodium of 2.5kg edetate is added, stirring dispersion machine is with 1400r/
After the revolving speed stirring 5min of min, 7kg ethyl alcohol is added, polyoxyethylene laurel ether 5kg is added in 5.5kg glycerine, and polyoxy second is added
After stirring dispersion machine stirs 5min with the revolving speed of 1400r/min, three second of isocyanates propyl is added in alkene oxypropylene glycerol 2.5kg
Oxysilane 20kg, after stirring dispersion machine stirs 2hour with the revolving speed of 1400r/min, obtaining effective solid content is 45%
(wt%) nano silica anti-channeling lotion, particle diameter distribution 9-310nm, average grain diameter 150nm.Nano silica anti-channeling cream
The density of liquid is 1.38g/cm3, average grain diameter 150nm.At room temperature through in gravitational settling 1 year, nano silica anti-channeling lotion
It does not precipitate and still has mobility.70 DEG C do not precipitate through 6 months nano silica anti-channeling lotions of gravitational settling and still have stream
Dynamic property.
Density is 1.95g/cm3Well cementation leakage-proof mud preparation method (in terms of 10 cubes of cement slurries): 1. incite somebody to action oneself
3.1 tons of water, 2.78 tons of nano silica anti-channeling lotion, 1.17 tons of filtrate reducer for oil well cement slurry, oil well cement retarder
0.11 ton, 0.21 ton of oil well cement dispersant, 0.07 ton of defoaming agent put into storage tank pump circulation at least two hours respectively into material
Liquid is spare；2. 14 tons of cement of G grades of oil-well cements are deposited in spare in cement ash can；3. by above-mentioned feed liquid and oil-well cement according to
The mass ratio of 0.53:1 is configured to density 1.95g/cm with cementing equipment3Nanometer titanium dioxide silicon emulsion anti fluid channeling cement slurry i.e. obtain
Well cementation leakage-proof mud.
The cement slurry of preparation is under the conditions of 80 DEG C of * 50Mpa*40min, thickening time 148min, API dehydration 31mL, quiet glue
Solidifying transit time 16min, 48 hours intensity are 27Mpa, and cement slurry anti-channeling factor S PN value is 2.4, the gas permeability of Behavior of Hardened Cement Paste
It is 0.071 × 10-3μm2.
Through detecting, it is 1.80-1.95g/ that well cementation made from embodiment 1-3, which can satisfy density range with leakage-proof mud,
cm3Cementing operation design requirement, permeability is low, fluid loss is small, intensity is high, and static gel strength transit time is short, have it is excellent
Anti-gas channeling performance, the cementing quality of oil/gas well can be significantly improved.
Comparative example 1
Nano silica anti-channeling lotion is prepared in method same as Example 2, the difference is that only, it is obtained to receive
The average grain diameter of nanometer silicon dioxide particle is 60nm in rice silica anti-channeling lotion.
Density is 1.88g/cm3Well cementation leakage-proof mud preparation method (in terms of 10 cubes of cement slurries): 1. incite somebody to action oneself
3.75 tons of water, 2 tons of nano silica anti-channeling lotion, 0.73 ton of filtrate reducer for oil well cement slurry, oil well cement retarder
0.07 ton, 0.13 ton of oil well cement dispersant, 0.04 ton of defoaming agent put into storage tank pump circulation at least two hours respectively into material
Liquid is spare；2. 13.2 tons of cement of G grades of oil-well cements are deposited in spare in cement ash can；3. above-mentioned feed liquid is pressed with oil-well cement
Density 1.90g/cm is configured to cementing equipment according to the mass ratio of 0.51:13Nanometer titanium dioxide silicon emulsion anti fluid channeling cement starch to obtain the final product
To well cementation leakage-proof mud.
Through detecting, the cement slurry of preparation is under the conditions of 80 DEG C of * 50Mpa*40min, thickening time 156min, API dehydration
30mL, quiet gelling transit time 17min, 48 hours intensity are 25Mpa, and cement slurry anti-channeling factor S PN value is 2.5, Behavior of Hardened Cement Paste
Gas permeability is 0.25 × 10-3μm2.Since partial size is too small, cause cement slurry thickening serious, introduces excessive blistering, mobility
The gas permeability of difference, Behavior of Hardened Cement Paste increases.
Comparative example 2
Nano silica anti-channeling lotion is prepared in method same as Example 2, the difference is that only, it is obtained to receive
The average grain diameter of nanometer silicon dioxide particle is 150nm in rice silica anti-channeling lotion.
Density is 1.88g/cm3Well cementation leakage-proof mud preparation method (in terms of 10 cubes of cement slurries): 1. incite somebody to action oneself
3.75 tons of water, 2 tons of nano silica anti-channeling lotion, 0.73 ton of filtrate reducer for oil well cement slurry, oil well cement retarder
0.07 ton, 0.13 ton of oil well cement dispersant, 0.04 ton of defoaming agent put into storage tank pump circulation at least two hours respectively into material
Liquid is spare；2. 13.2 tons of cement of G grades of oil-well cements are deposited in spare in cement ash can；3. above-mentioned feed liquid is pressed with oil-well cement
Density 1.90g/cm is configured to cementing equipment according to the mass ratio of 0.51:13Nanometer titanium dioxide silicon emulsion anti fluid channeling cement starch to obtain the final product
To well cementation leakage-proof mud.
Through detecting, the cement slurry of preparation is under the conditions of 80 DEG C of * 50Mpa*40min, thickening time 149min, API dehydration
40mL, quiet gelling transit time 16min, 48 hours intensity are 24Mpa, and the gas permeability of Behavior of Hardened Cement Paste is 0.32 × 10-3μm2.
It should be noted that embodiment described above for explaining only the invention, is not constituted to of the invention any
Limitation.By referring to exemplary embodiments, invention has been described, it should be appreciated that word used in it is descriptive
With explanatory vocabulary, rather than limited vocabulary.The present invention can be made within the scope of the claims by regulation
Modification, and the present invention is revised in without departing substantially from scope and spirit of the present invention.Although the present invention described in it relates to
And specific method, material and embodiment, it is not intended that the present invention is limited to particular case disclosed in it, on the contrary, this hair
It is bright to can be extended to other all methods and applications with the same function.
Claims (14)
1. a kind of nano silica anti-channeling lotion for cementing slurry, which is characterized in that the nano silica is anti-
The particle diameter distribution of nanometer silicon dioxide particle in lotion is altered in the range of 9nm to 310nm, average grain diameter is in 80nm to 120nm
In the range of.
2. nano silica anti-channeling lotion according to claim 1, which is characterized in that the nano silica anti-channeling
For the particle diameter distribution of nanometer silicon dioxide particle in the range of 9nm to 210nm, average grain diameter is in 95nm to 105nm's in lotion
In range.
3. nano silica anti-channeling lotion according to claim 1 or 2, which is characterized in that the nano silica
The effective solid content of anti-channeling lotion is 40-50 weight %.
4. nano silica anti-channeling lotion according to claim 3, which is characterized in that the nano silica anti-channeling
The effective solid content of lotion is 44-46 weight %.
5. nano silica anti-channeling lotion according to claim 1 or 2, which is characterized in that the nano silica
Nanometer silicon dioxide particle in anti-channeling lotion is spheric granules.
6. a kind of well cementation leakage-proof mud, which is characterized in that the cement slurry includes according to claim 1 any one of -5
The nano silica anti-channeling lotion.
7. cement slurry according to claim 6, which is characterized in that the cement slurry includes the following:
Oil-well cement,
Nano silica anti-channeling lotion described in any one of -5 according to claim 1,
Fluid loss agent,
Retarder,
Dispersing agent,
Defoaming agent, and
Water.
8. cement slurry according to claim 7, which is characterized in that the oil well cement paste is G grades of oil-well cements.
9. cement slurry according to claim 7, which is characterized in that the cement slurry includes the following:
The oil-well cement of 65-71 mass parts,
The nano silica anti-channeling lotion described in any one of -5 according to claim 1 of 5-14.5 mass parts,
The fluid loss agent of 1.3-4 mass parts,
The retarder of 0.07-0.6 mass parts,
The dispersing agent of 0.2-1 mass parts,
The defoaming agent of 0.07-0.3 mass parts, and
The water of 8-28 mass parts.
10. cement slurry according to claim 9, which is characterized in that the oil-well cement is G grades of oil-well cements.
11. according to cement slurry described in claim 7-10 any one, which is characterized in that
The fluid loss agent is the copolymer of AMPS class,
The dispersing agent is keto-aldehyde condensation product,
The retarder is organic acid,
The defoaming agent is organosilicon oils.
12. cement slurry according to any one of claims of claim 7-10, which is characterized in that the density of the cement slurry exists
In the range of 1.80-1.95g/cm3, the cement slurry has the API dehydration less than 50mL, the static gel strength transition of cement slurry
Time is less than 20min, and anti-channeling factor S PN value is less than 2.
13. a kind of method for preparing the cement slurry according to any one of claim 6-12, includes the following steps:
1) by the water of 8-28 mass parts, the nano-silica described in any one of -5 according to claim 1 of 5-14.5 mass parts
The dispersion of SiClx anti-channeling lotion, the fluid loss agent of 1.3-4 mass parts, the retarder of 0.07-0.6 mass parts, 0.2-1 mass parts
Agent, 0.07-0.3 mass parts defoaming agent put into pump circulation at least two hours in storage tank respectively, it is spare that feed liquid is made；
2) oil-well cement of 65-71 mass parts is deposited in spare in ash can；
3) above-mentioned feed liquid and oil-well cement are configured to density with cementing equipment according to the mass ratio of 0.5-0.6:1 is 1.80-
1.95g/cm3Well cementation leakage-proof mud.
14. the method for cement slurry according to claim 13, which is characterized in that the oil-well cement is G grades of oil-well cements.
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| CN107418535A (en) * | 2017-06-30 | 2017-12-01 | 四川宏升石油技术开发有限责任公司 | Prepare the preparation method of rust-proof oil well cement anti-migration agent |
| CN108034416B (en) * | 2017-11-07 | 2021-04-27 | 天津中油渤星工程科技有限公司 | Inorganic-organic interpenetrating network oil well cement channeling-preventing agent, preparation method and cement slurry |
| CN111117580B (en) * | 2018-11-01 | 2022-03-08 | 中国石油化工股份有限公司 | Strong-adsorption amino inhibitor for drilling fluid 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 |
| CN112390564B (en) * | 2019-08-15 | 2022-07-22 | 中国石油化工股份有限公司 | Water-based composite emulsion and preparation method and application thereof |
| CN111704389A (en) * | 2020-07-02 | 2020-09-25 | 中国海洋石油集团有限公司 | Nano channeling-preventing agent, preparation method thereof and channeling-preventing cement slurry |
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