CN108794697A - A kind of drag reducer, preparation method and applications - Google Patents
A kind of drag reducer, preparation method and applications Download PDFInfo
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- CN108794697A CN108794697A CN201710289734.XA CN201710289734A CN108794697A CN 108794697 A CN108794697 A CN 108794697A CN 201710289734 A CN201710289734 A CN 201710289734A CN 108794697 A CN108794697 A CN 108794697A
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- monomer
- drag reducer
- polyalkylene glycol
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/163—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/165—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds containing polyether side chains
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
Abstract
The invention discloses a kind of drag reducer, preparation method and applications, belong to cementing technology field.The drag reducer is obtained by the polymerization of unsaturated sulfonic acid monomer, beta-unsaturated esters monomer, methacrylic acid monomer, the polyalkylene glycol monomer containing saturated group and the polyalkylene glycol monomer containing unsaturated group, and the weight average molecular weight of the drag reducer is 20000~120000.The molecular structure for the drag reducer that the present invention is obtained by monomer polymerization is in combed, and carboxylic acid group (- COOH), sulfonic group (- SO are carried on main chain3H) isoreactivity group, cement particle surface can be effectively anchored in, side chain is constituted solvated layer with polyethylene glycols macromonomer in cement surface simultaneously, and reticular structure can be formed, combed flexibility is adsorbed in cement particle surface, and space steric effect is apparent, and controls the weight average molecular weight of drag reducer between 20000~120000, saliferous, weighted cement slurry system can effectively be disperseed, be conducive to improve rheological property.
Description
Technical field
The present invention relates to cementing technology field, more particularly to a kind of drag reducer, preparation method and applications.
Background technology
At present in oil fields such as the Tarim Basin in China, Xinjiang, Yumen, the oil fields such as Irak Haffa Asia, rice mulberry, Kazak this
Smooth Kenkyak oilfield, the oil fields such as Amu Darya right bank gas field of Turkmenistan, which are all bored, has met high pressured slatwater layer or big section salt
Layer of paste, due to the particularity in oil field under salt, strata pressure is larger, and creep, the movement of salt will produce certain shadow in well cementation
It rings, and since sodium chloride (salt) is a kind of strong electrolyte, cement mortar can be made to generate and promote that solidifying, to dodge solidifying and extra retarded set etc. bad existing
As, thus cement the well when must use saliferous, high-density slurry system, it will usually in the system be added drag reducer come improve saliferous,
The rheological property of high-density cement mortar.
Existing drag reducer has aldehyde ketone condensation polymer, poly naphthalene sulfonate or polycarboxylic acids drag reducer etc., wherein aldehyde ketone condensation polymer
Dispersibility it is poor；The dispersibility of poly naphthalene sulfonate is stronger, but its dispersion retentivity is poor；Polycarboxylic acids drag reducer has one
Fixed dispersibility and dispersion retentivity, but the carboxylic acid content in polycarboxylic acids drag reducer is higher, latent relatively strong.
Therefore, how to improve the dispersibility of drag reducer, improve its rheological property, and how effectively to be disappeared by drag reducer
Desalination is to the problem of adverse effect of cement mortar is this field researcher concern.
Invention content
In order to solve the problems, such as that prior art dispersibility, rheological property are low, an embodiment of the present invention provides a kind of drag reductions
Agent, preparation method and applications.The technical solution is as follows：
In a first aspect, providing a kind of drag reducer, the drag reducer is by unsaturated sulfonic acid monomer, beta-unsaturated esters monomer, first
Base acrylic monomers, the polyalkylene glycol monomer containing saturated group and the polymerization of the polyalkylene glycol monomer containing unsaturated group
And obtain, the weight average molecular weight of the drag reducer is 20000~120000.
Specifically, the unsaturated sulfonic acid monomer is 2- acrylamide-2-methylpro panesulfonic acid monomers.
Specifically, the quality of the unsaturated sulfonic acid monomer accounts for the 10~60% of monomer gross mass, preferably 15~30%.
Specifically, the beta-unsaturated esters monomer is butylmethacrylate monomer.
Specifically, the quality of the beta-unsaturated esters monomer accounts for the 1~20% of monomer gross mass, preferably 5~10%.
Specifically, the quality of the methacrylic acid monomer accounts for the 1~15% of monomer gross mass, preferably 5~10%.
Specifically, the polyalkylene glycol monomer containing saturated group is methoxy poly (ethylene glycol) monomer.
Specifically, the quality of the polyalkylene glycol monomer containing saturated group accounts for the 10~30% of monomer gross mass, excellent
It is selected as 15~25%.
Preferably, the weight average molecular weight of the methoxy poly (ethylene glycol) monomer is 600~2000.
Specifically, the polyalkylene glycol monomer containing unsaturated group is allyl polyglycol monomer.
Specifically, the quality of the polyalkylene glycol monomer containing unsaturated group accounts for the 20~70% of monomer gross mass,
Preferably 30~60%.
Preferably, the weight average molecular weight of the allyl polyglycol monomer is 1500~2500.
Second aspect provides a kind of preparation method of drag reducer, the method includes：
Sequentially add the unsaturation that unsaturated sulfonic acid monomer, mass fraction that mass fraction is 10~60% are 1~20%
Methacrylic acid monomer that ester monomer, mass fraction are 1~15%, mass fraction be 10~30% it is poly- containing saturated group
Ethylene glycol monomers, the polyalkylene glycol monomer containing unsaturated group that mass fraction is 20~70% are in water (with the total matter of monomer
Amount calculates for 100%), to dissolving, it is 1~9 to adjust pH for stirring, is heated up after system is placed in 25 DEG C of water bath with thermostatic control stirring half an hour
To 55~95 DEG C, initiator for reaction is added 2~12 hours.
Specifically, the method includes：Sequentially add the 2- acrylamido -2- methyl-props that mass fraction is 10~60%
The methacrylic acid that butylmethacrylate monomer that sulfonic acid monomer, mass fraction are 1~20%, mass fraction are 1~15%
The poly- second of allyl that methoxy poly (ethylene glycol) monomer that monomer, mass fraction are 10~30%, mass fraction are 20~70% two
Alcohol monomer (being 100% calculating with monomer gross mass) in water, to dissolving, it is 1~9 to adjust pH, and system is placed in 25 DEG C for stirring
Water bath with thermostatic control is warming up to 55~95 DEG C after stirring half an hour, initiator for reaction is added 2~12 hours.
Preferably, the adjusting pH be 1~9 for by be added sodium hydroxide adjust pH be 1~9, hydrogen-oxygen is preferably added
It is 2~7 to change sodium to adjust pH.
Preferably, the initiator is ammonium persulfate,
Preferably, the addition of the initiator is the 0.1~1% of monomer gross mass, preferably 0.25%.
The third aspect provides a kind of application of drag reducer in cement paste for well cementation.
Fourth aspect provides a kind of application of drag reducer in saliferous, high-density cement mortar.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
The molecular structure of the drag reducer obtained by above-mentioned monomer polymerization is in combed, on main chain with carboxylic acid group (-
COOH), sulfonic group (- SO3H) isoreactivity group can effectively be anchored in cement particle surface, while side chain is big with polyethylene glycols
Molecule monomer constitutes solvated layer in cement surface, and can form reticular structure, and combed flexibility is adsorbed in cement particle surface, empty
Between steric effect it is apparent, in conjunction with the electrostatic repulsion generated between main chain anion while playing a role, formed three-dimensional repulsion effect compared with
Greatly, the dispersibility and rheological property of drag reducer are improved；Then salt resistance monomer is added, unsaturated sulfonic acid monomer utilizes its sulphur
Acid groups improve salt-resistance；Finally the weight average molecular weight of control drag reducer can effectively disperse to contain between 20000~120000
Salt, weighted cement slurry system are conducive to improve rheological property.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the thickening curve graph that embodiment 10 obtains.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, embodiment of the present invention will be made into one below
Step ground detailed description.
In a first aspect, providing a kind of drag reducer, the drag reducer is by unsaturated sulfonic acid monomer, beta-unsaturated esters monomer, first
Base acrylic monomers, the polyalkylene glycol monomer containing saturated group and the polymerization of the polyalkylene glycol monomer containing unsaturated group
And obtain, the weight average molecular weight of the drag reducer is 20000~120000.
The molecular structure of the drag reducer obtained by above-mentioned monomer polymerization is in combed, on main chain with carboxylic acid group (-
COOH), sulfonic group (- SO3H) isoreactivity group can effectively be anchored in cement particle surface, while side chain is big with polyethylene glycols
Molecule monomer constitutes solvated layer in cement surface, and can form reticular structure, and combed flexibility is adsorbed in cement particle surface, empty
Between steric effect it is apparent, in conjunction with the electrostatic repulsion generated between main chain anion while playing a role, formed three-dimensional repulsion effect compared with
Greatly, the dispersibility and rheological property of drag reducer are improved；Then salt resistance monomer is added, unsaturated sulfonic acid monomer utilizes its sulphur
Acid groups improve salt-resistance；Finally the weight average molecular weight of control drag reducer can effectively disperse to contain between 20000~120000
Salt, weighted cement slurry system are conducive to improve rheological property.
Specifically, the unsaturated sulfonic acid monomer is 2- acrylamide-2-methylpro panesulfonic acid monomers.
Specifically, the quality of the unsaturated sulfonic acid monomer accounts for the 10~60% of monomer gross mass, preferably 15~30%.
Specifically, the beta-unsaturated esters monomer is butylmethacrylate monomer.
Specifically, the quality of the beta-unsaturated esters monomer accounts for the 1~20% of monomer gross mass, preferably 5~10%.
Specifically, in methacrylic acid monomer due to carboxylic acid group (- COOH) have it is stronger latent, latent refers to prolonging
Slow cement setting reduces its polymerization efficiency using methacrylic acid, main chain carboxylic acid group (- COOH) content is reduced, to reduce
Its is latent；Simultaneously in view of drag reducer provided by the invention can be applied to high-density cement mortar, high-density cement mortar uses more
In high temperature and high pressure environment, the longer thickening time is needed, and cement slurry thickening time itself substantially shortens under high temperature, is the extended period
Methacrylic acid is added in thickening time, and hydrolysis at high temperature generates carboxylic acid group and is conducive to extend the thickening time.
Specifically, the quality of the methacrylic acid monomer accounts for the 1~15% of monomer gross mass, preferably 5~10%.
Specifically, the polyalkylene glycol monomer containing saturated group is methoxy poly (ethylene glycol) monomer.The poly- second of methoxyl group
Glycol itself has dispersibility, occurs that Semi-IPN type polymer network can be obtained when polymerisation in the presence, can effective anchor
Gu high-density weighting material improves rheological characteristic to promote the homogeneity and stability of mortar architecture.
Specifically, the quality of the polyalkylene glycol monomer containing saturated group accounts for the 10~30% of monomer gross mass, excellent
It is selected as 15~25%.
Preferably, the weight average molecular weight of the methoxy poly (ethylene glycol) monomer is 600~2000.
Specifically, the polyalkylene glycol monomer containing unsaturated group is allyl polyglycol monomer.
Specifically, the quality of the polyalkylene glycol monomer containing unsaturated group accounts for the 20~70% of monomer gross mass,
Preferably 30~60%.
Preferably, the weight average molecular weight of the allyl polyglycol monomer is 1500~2500.
Second aspect provides a kind of preparation method of drag reducer, the method includes：
Sequentially add the unsaturation that unsaturated sulfonic acid monomer, mass fraction that mass fraction is 10~60% are 1~20%
Methacrylic acid monomer that ester monomer, mass fraction are 1~15%, mass fraction be 10~30% it is poly- containing saturated group
Ethylene glycol monomers, the polyalkylene glycol monomer containing unsaturated group that mass fraction is 20~70% are in water (with the total matter of monomer
Amount calculates for 100%), to dissolving, it is 1~9 to adjust pH for stirring, is heated up after system is placed in 25 DEG C of water bath with thermostatic control stirring half an hour
To 55~95 DEG C, initiator for reaction is added 2~12 hours.
It should be noted that in order to enable each monomer to be preferably dissolved in the water, above-mentioned unsaturated sulfonic acid monomer, unsaturation
Ester monomer, methacrylic acid monomer, the polyalkylene glycol monomer containing saturated group and the polyethylene glycol containing unsaturated group
Monomer is added in their order, and is stirred after the addition of former monomer, waits for system after mixing, adds another monomer again
Stirring, makes it dissolve.
Specifically, the method includes：Sequentially add the 2- acrylamido -2- methyl-props that mass fraction is 10~60%
The methacrylic acid that butylmethacrylate monomer that sulfonic acid monomer, mass fraction are 1~20%, mass fraction are 1~15%
The poly- second of allyl that methoxy poly (ethylene glycol) monomer that monomer, mass fraction are 10~30%, mass fraction are 20~70% two
Alcohol monomer (being 100% calculating with monomer gross mass) in water, to dissolving, it is 1~9 to adjust pH, and system is placed in 25 DEG C for stirring
Water bath with thermostatic control is warming up to 55~95 DEG C after stirring half an hour, initiator for reaction is added 2~12 hours.
Preferably, the adjusting pH be 1~9 for by be added sodium hydroxide adjust pH be 1~9, hydrogen-oxygen is preferably added
It is 2~7 to change sodium to adjust pH.
Preferably, the initiator is ammonium persulfate.
Preferably, the addition of the initiator is the 0.1~1% of monomer gross mass, preferably 0.25%.
The third aspect provides a kind of application of drag reducer in cement paste for well cementation.
Fourth aspect provides a kind of application of drag reducer in saliferous, high-density cement mortar.
Chemical reagent used in the embodiment of the present invention：
Butyl methacrylate analyzes pure, Chinese medicines group chemical reagents corporation；
Methacrylic acid analyzes pure, Chinese medicines group chemical reagents corporation；
Ammonium persulfate analyzes pure, Chinese medicines group chemical reagents corporation；
Sodium chloride analyzes pure, Chinese medicines group chemical reagents corporation；
Sodium hydroxide analyzes pure, Chinese medicines group chemical reagents corporation；
2- acrylamide-2-methylpro panesulfonic acids, chemical pure, Shouguang Run De Chemical Co., Ltd.s；
Methoxy poly (ethylene glycol) (MPEG), Jiangsu Hai'an Petrochemical Plant；
Allyl polyglycol (APEG), Jiangsu Hai'an Petrochemical Plant；
Aksu G class g cements, Aksu of Xinjiang Tianshan Mountains Duo Lang cement Co., Ltd；
Silica flour, model well cementation silica flour, Kuqa County Hu Li mud materials factory；
Iron powder (title：High-density weighting material, specification：GM-1), Chongqing Xin Yi Machinery Manufacturing Co., Ltd.s；
Agent for anti gassing-out, model BCG-200L, technical grade, Tianjin Cnpc Boxing Engineering Technology Co., Ltd.；
High temperature retarder, model BCR-300L, technical grade, Tianjin Cnpc Boxing Engineering Technology Co., Ltd.；
Latex, model BCT-880L, technical grade, Tianjin Cnpc Boxing Engineering Technology Co., Ltd..
The scheme further illustrated the present invention below by way of specific embodiment：
Firstly the need of explanation, methoxy poly (ethylene glycol) (MPEG's) that is used in the following embodiment of the present invention divides equally again
Son amount be 600~2000, unless otherwise specified other than, indicated in the form of " MPEG- weight average molecular weight " its title and
Molecular weight, such as MPEG-2000 indicate that weight average molecular weight is 2000 methoxy poly (ethylene glycol), are used in the embodiment of the present invention
The weight average molecular weight of allyl polyglycol (APEG) be 1500~2500, unless otherwise specified other than, with " APEG- weight it is equal
The form of molecular weight " indicates its title and molecular weight, such as APEG-2100 indicates that weight average molecular weight is 2100 allyl
Polyethylene glycol.
Embodiment 1
The present embodiment provides a kind of drag reducers and preparation method thereof.
400ml water is measured, is added in the four-hole bottle equipped with blender and thermometer, is added 20g's into four-hole bottle successively
The poly- second of methoxyl group of 2- acrylamide-2-methylpro panesulfonic acids, the butyl methacrylate of 10g, the methacrylic acid of 10g, 20g
The allyl polyglycol (APEG-2400) of glycol (MPEG-600) and 40g are stirred at room temperature to dissolving, and sodium hydroxide tune is added
PH to 4 is saved, four-hole bottle, which is then placed in 25 DEG C of waters bath with thermostatic control, stirs half an hour, and bath temperature is then risen to 85 DEG C, then will
0.25g ammonium persulfate solutions are added and are added in said mixture and react 3h, obtain the drag reducer that weight average molecular weight is 96000.
Embodiment 2
The present embodiment provides a kind of drag reducers and preparation method thereof.
Difference lies in 2- acrylamido -2- methyl-props with embodiment 1 for drag reducer preparation method provided in this embodiment
The addition of sulfonic acid is 25g, and the addition of butyl methacrylate is 8g, and allyl polyglycol (APEG-2000) is 37g,
Obtain the drag reducer that weight average molecular weight is 85000.
Embodiment 3
The present embodiment provides a kind of drag reducers and preparation method thereof.
Difference lies in allyl polyglycol APEG- with embodiment 1 for drag reducer preparation method provided in this embodiment
1500, obtain the drag reducer that weight average molecular weight is 116000.
Embodiment 4
The present embodiment provides a kind of application of drag reducer in saliferous, high-density cement mortar.
Drag reducer prepared by embodiment 1 is added in saliferous, high-density cement mortar, and the saliferous after drag reducer, highly dense is added
Spending cement-slurry method is：The Aksu 400g G class g cements, 140g well cementation silica flours, 300g iron powders, 12g agent for anti gassing-out (BCG-
200L), 12g high temperature retarders (BCR-300L), 40g latex (BCT-880L), 15% brine of 184g (use mass fraction for
15% sodium chloride is added to the water to obtain), 10g drag reducers.
Embodiment 5
The present embodiment provides a kind of application of drag reducer in saliferous, high-density cement mortar.
Drag reducer prepared by embodiment 2 is added in saliferous, high-density cement mortar, and the saliferous after drag reducer, highly dense is added
It is identical as the formula of embodiment 4 to spend cement-slurry method.
Embodiment 6
The present embodiment provides a kind of application of drag reducer in saliferous, high-density cement mortar.
Drag reducer prepared by embodiment 3 is added in saliferous, high-density cement mortar, and the saliferous after drag reducer, highly dense is added
It is identical as the formula of embodiment 4 to spend cement-slurry method.
Embodiment 7
The mortar architecture obtained by embodiment 4 is carried out performance measurement, wherein density, 90 DEG C of dehydrations by the present embodiment
Amount, the strength test after 24 hours are according to national standards《GBT 19139-2012 oil-well cement test methods》In measurement side
Method carries out.The viscosimetric analysis of mortar architecture is according to professional standard《SYT5504.3-2008 oil well cement additive evaluation methods
Third portion：Drag reducer》In method execute.Measurement result is shown in table 1.
The performance for the mortar architecture that table 1. is obtained by embodiment 4
It should be noted that in table 1, θ3~θ600This 6 values be respectively cement mortar ix-speed electronic rheometer rotating speed be respectively 3,
6,100,200,300, shear stress when 600r/min.In addition, n represents liquidity index, k is consistency coefficient, and the value of n and k can
To be calculated by the value of θ, which is the prior art, and the embodiment of the present invention does not elaborate to this, in addition subtracts
Resist volume %BWOC refers to the percentage that drag reducer accounts for cement weight, representated by the relevant parameter in following example table 2, table 3
Meaning it is consistent in table 1.
It will be appreciated by persons skilled in the art that the shear stress of the saliferous of drag reducer, high-density cement mortar is not added
Value is usually larger, can surpass instrument range and can not read, nK can not be calculated.And what embodiment 7-9 was measured is to add to subtract
The shear stress of saliferous, high-density cement mortar after resist, not exceeding instrument range from shear stress values can look first at
Go out after drag reducer is added and improves saliferous, high-density cement mortar rheological property.
As it can be seen from table 1 the density of the mortar architecture obtained by embodiment 4 is 2.72g/cm3, under normal conditions
Think 2.00g/cm3Above cement mortar is saliferous, high-density cement mortar.It is general that dehydration when 90 DEG C of cement mortar is required to be not more than
100ml, for 24 hours intensity be not less than 14MPa, illustrate by addition drag reducer, which meets the requirements, even if in saliferous
In mortar architecture, intensity will not be destroyed.By liquidity index n and consistency coefficient k can be seen that its rheological property compared with
It is good, think that the value of n is bigger (such as the n values of water are 1) under normal conditions, the value of k is smaller, illustrates that rheological property is better.
Embodiment 8
The mortar architecture obtained by embodiment 5 is carried out performance measurement, assay method and embodiment 7 by the present embodiment
In it is consistent, measurement result is shown in table 2.
The performance for the mortar architecture that table 2. is obtained by embodiment 5
From table 2 it can be seen that the density of the saliferous obtained by embodiment 5, weighted cement slurry system is 2.72g/
cm3, to contain salt high-density cement mortar.Fluid loss and intensity meets the requirements for 24 hours when the cement slurry ties up to 90 DEG C, explanation passes through
Drag reducer is added, which meets the requirements, even if in the mortar architecture of saliferous, intensity will not be destroyed.
Embodiment 9
The mortar architecture obtained by embodiment 6 is carried out performance measurement, assay method and embodiment 7 by the present embodiment
In it is consistent, measurement result is shown in table 3.
The performance for the mortar architecture that table 3. is obtained by embodiment 6
From table 2 it can be seen that the density of the mortar architecture obtained by embodiment 6 is 2.72g/cm3, it is that saliferous is highly dense
Spend cement mortar.Fluid loss and intensity meets the requirements for 24 hours when the cement slurry ties up to 90 DEG C illustrates by the way that drag reducer is added, should
Mortar architecture meets the requirements, even if in the mortar architecture of saliferous, intensity will not be destroyed.Pass through liquidity index n
Its good rheological property is can be seen that with consistency coefficient k.Compared to embodiment 7, n value highers, k value smallers illustrate its rheological characteristic
It can be more preferable compared to the mortar architecture obtained by embodiment 4.
Embodiment 10
The mortar architecture obtained by embodiment 4 is carried out consistency testing by the present embodiment, according to professional standard《SYT
5504.3-2008 oil well cement additive evaluation method third portions：Drag reducer》It executes.Wherein, when the heating that consistency testing is
Between for 90min, the thickening experiment of 180 DEG C of temperature, pressure 80MPa, as a result (thickening curve) be shown in FIG. 1.
The consistency of cement mortar refers to the sliminess of cement mortar, for characterizing the flow behavior of cement mortar, unit primary
It steps on (Bc).
Consistency maximum value of the initial consistency between 15min~30min, can reflect the initial flow of cement mortar in Fig. 1
Dynamic property, it can be seen that its consistency illustrates that its initial fluidity is good between 10~15Bc, it is further seen that cement mortar is thick
It is normal to change curve.
The alternative embodiment that any combination forms the disclosure may be used, herein no longer in above-mentioned all optional technical solutions
It repeats one by one.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (19)
1. a kind of drag reducer, which is characterized in that the drag reducer is by unsaturated sulfonic acid monomer, beta-unsaturated esters monomer, metering system
Acid monomers, the polyalkylene glycol monomer containing saturated group and the polymerization of the polyalkylene glycol monomer containing unsaturated group obtain,
The weight average molecular weight of the drag reducer is 20000~120000.
2. drag reducer according to claim 1, which is characterized in that the unsaturated sulfonic acid monomer is 2- acrylamidos-
2- methyl propane sulfonic acid monomers.
3. drag reducer according to claim 2, which is characterized in that the quality of the unsaturated sulfonic acid monomer accounts for the total matter of monomer
The 10~60% of amount.
4. drag reducer according to claim 1, which is characterized in that the beta-unsaturated esters monomer is butyl methacrylate list
Body.
5. drag reducer according to claim 4, which is characterized in that the quality of the beta-unsaturated esters monomer accounts for monomer gross mass
1~20%.
6. drag reducer according to claim 1, which is characterized in that the quality of the methacrylic acid monomer accounts for the total matter of monomer
The 1~15% of amount.
7. drag reducer according to claim 1, which is characterized in that the polyalkylene glycol monomer containing saturated group is first
Oxygroup polyalkylene glycol monomer.
8. drag reducer according to claim 7, which is characterized in that the matter of the polyalkylene glycol monomer containing saturated group
Amount accounts for the 10~30% of monomer gross mass.
9. drag reducer according to claim 7, which is characterized in that the weight average molecular weight of the methoxy poly (ethylene glycol) monomer
It is 600~2000.
10. drag reducer according to claim 1, which is characterized in that the polyalkylene glycol monomer containing unsaturated group
For allyl polyglycol monomer.
11. drag reducer according to claim 10, which is characterized in that the polyalkylene glycol monomer containing unsaturated group
Quality account for the 20~70% of monomer gross mass.
12. drag reducer according to claim 10, which is characterized in that the Weight-average molecular of the allyl polyglycol monomer
Amount is 1500~2500.
13. the preparation method of the drag reducer described in a kind of any one of claim 1-12, which is characterized in that the method packet
It includes：
Sequentially add the beta-unsaturated esters list that unsaturated sulfonic acid monomer, mass fraction that mass fraction is 10~60% are 1~20%
The poly- second two containing saturated group that methacrylic acid monomer that body, mass fraction are 1~15%, mass fraction are 10~30%
Alcohol monomer, the polyalkylene glycol monomer containing unsaturated group that mass fraction is 20~70% (are with monomer gross mass in water
100% calculates), to dissolving, it is 1~9 to adjust pH for stirring, and 55 are warming up to after system is placed in 25 DEG C of water bath with thermostatic control stirring half an hour
~95 DEG C, initiator for reaction is added 2~12 hours.
14. according to the method for claim 13, which is characterized in that the method includes：It is 10 to sequentially add mass fraction
~60% 2- acrylamide-2-methylpro panesulfonic acids monomer, the butylmethacrylate monomer that mass fraction is 1~20%,
Methoxy poly (ethylene glycol) monomer that methacrylic acid monomer that mass fraction is 1~15%, mass fraction are 10~30%, quality
The allyl polyglycol monomer that score is 20~70% (being 100% calculating with monomer gross mass) in water, stirring to dissolving,
It is 1~9 to adjust pH, is warming up to 55~95 DEG C after system is placed in 25 DEG C of water bath with thermostatic control stirring half an hour, initiator for reaction 2 is added
~12 hours.
15. according to the method for claim 14, which is characterized in that the adjusting pH is 1~9 for by the way that sodium hydroxide is added
It is 1~9 to adjust pH.
16. according to the method for claim 14, which is characterized in that the initiator is ammonium persulfate.
17. according to the method for claim 16, which is characterized in that the addition of the initiator is monomer gross mass
0.1~1%.
18. a kind of application of drag reducer according to any one of claim 1-12 in cement paste for well cementation.
19. a kind of application of drag reducer according to any one of claim 1-12 in saliferous, high-density cement mortar.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710289734.XA CN108794697A (en) | 2017-04-27 | 2017-04-27 | A kind of drag reducer, preparation method and applications |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111303846A (en) * | 2020-02-27 | 2020-06-19 | 成都欧美克石油科技股份有限公司 | Oil-gas well cementing brine high-density cement slurry |
| CN112300323A (en) * | 2020-10-15 | 2021-02-02 | 天津中油渤星工程科技有限公司 | Drag-reducing viscosity reducer for oil well cement and preparation method thereof |
| CN114702273A (en) * | 2019-12-24 | 2022-07-05 | 科之杰新材料集团福建有限公司 | Polycarboxylate superplasticizer for reinforcing steel bar sleeve grouting material for prefabricated part and grouting material thereof |
| CN114874404A (en) * | 2022-05-18 | 2022-08-09 | 四川弘晟石油工程技术服务有限公司 | Environment-friendly oil well cement drag reducer with carbon nanotube tree structure and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225988A (en) * | 2011-03-24 | 2011-10-26 | 中国海洋石油总公司 | Dispersant used in polymer cement mortar for oil field cementing, and preparation method thereof |
| CN102382270A (en) * | 2011-08-04 | 2012-03-21 | 陶梅 | Oil well cement slurry drag reducer and preparation method thereof |
| WO2012061147A1 (en) * | 2010-10-25 | 2012-05-10 | Isp Investments Inc. | Salt-tolerant, thermally-stable rheology modifiers |
| CN102585242A (en) * | 2012-01-06 | 2012-07-18 | 北京工业大学 | Method for preparing short-chain fatty acid vinyl ester series cement dispersant |
-
2017
- 2017-04-27 CN CN201710289734.XA patent/CN108794697A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012061147A1 (en) * | 2010-10-25 | 2012-05-10 | Isp Investments Inc. | Salt-tolerant, thermally-stable rheology modifiers |
| CN102225988A (en) * | 2011-03-24 | 2011-10-26 | 中国海洋石油总公司 | Dispersant used in polymer cement mortar for oil field cementing, and preparation method thereof |
| CN102382270A (en) * | 2011-08-04 | 2012-03-21 | 陶梅 | Oil well cement slurry drag reducer and preparation method thereof |
| CN102585242A (en) * | 2012-01-06 | 2012-07-18 | 北京工业大学 | Method for preparing short-chain fatty acid vinyl ester series cement dispersant |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114702273A (en) * | 2019-12-24 | 2022-07-05 | 科之杰新材料集团福建有限公司 | Polycarboxylate superplasticizer for reinforcing steel bar sleeve grouting material for prefabricated part and grouting material thereof |
| CN111303846A (en) * | 2020-02-27 | 2020-06-19 | 成都欧美克石油科技股份有限公司 | Oil-gas well cementing brine high-density cement slurry |
| CN111303846B (en) * | 2020-02-27 | 2022-10-25 | 成都欧美克石油科技股份有限公司 | Oil-gas well cementing brine high-density cement slurry |
| CN112300323A (en) * | 2020-10-15 | 2021-02-02 | 天津中油渤星工程科技有限公司 | Drag-reducing viscosity reducer for oil well cement and preparation method thereof |
| CN112300323B (en) * | 2020-10-15 | 2022-06-03 | 天津中油渤星工程科技有限公司 | Drag-reducing viscosity reducer for oil well cement and preparation method thereof |
| CN114874404A (en) * | 2022-05-18 | 2022-08-09 | 四川弘晟石油工程技术服务有限公司 | Environment-friendly oil well cement drag reducer with carbon nanotube tree structure and preparation method thereof |
| CN114874404B (en) * | 2022-05-18 | 2022-12-30 | 四川弘晟石油工程技术服务有限公司 | Environment-friendly oil well cement drag reducer with carbon nano tube tree structure and preparation method thereof |
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