CN103936914A - High temperature resistant non-fluorescence anti-sloughing nano-filtrate reducer and preparation method thereof - Google Patents

High temperature resistant non-fluorescence anti-sloughing nano-filtrate reducer and preparation method thereof Download PDF

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CN103936914A
CN103936914A CN201410142391.0A CN201410142391A CN103936914A CN 103936914 A CN103936914 A CN 103936914A CN 201410142391 A CN201410142391 A CN 201410142391A CN 103936914 A CN103936914 A CN 103936914A
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water
collapse
high temperature
sloughing
monomer
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CN103936914B (en
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王绪美
解洪祥
赵福祥
李洪俊
左凤江
贾东民
付伟
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China National Petroleum Corp
CNPC Bohai Drilling Engineering Co Ltd
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CNPC Bohai Drilling Engineering Co Ltd
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Abstract

The invention discloses a high temperature resistant non-fluorescence anti-sloughing nano-filtrate reducer and a preparation method of the high temperature resistant non-fluorescence anti-sloughing nano-filtrate reducer. The anti-sloughing nano-filtrate reducer is synthesized of at least one non-water-soluble monomer and at least one water-soluble monomer with amino or sulfonic acid group by using an emulsion polymerization method in a non-oxygen environment under the condition of stirring. The nanoscale of the anti-sloughing nano-filtrate reducer is 10nm-5,000nm, the surface of the anti-sloughing nano-filtrate reducer contains the amino group with an inhibition function or sulfonic acid base or sulfonic acid group with strong temperature resistance, and the anti-sloughing nano-filtrate reducer has a core-shell structure. The reduction rate of shale swelling inhibition can be more than 70%, the reduction rate of medium pressure filtration can be more than 50%, and the rheological properties of drilling fluid are not significantly affected. After the drilling fluid containing the prepared anti-sloughing filtrate reducer is subjected to hot rolling at 220 DEG C, the performance of the drilling fluid is not significantly changed, so that the anti-sloughing filtrate reducer has a good high temperature resistant effect. The anti-sloughing filtrate reducer has very good application prospect in the term of anti-sloughing inhibition.

Description

High temperature resistance is without fluorescence nano anti-collapse and anti-falling filtration agent and preparation method thereof
Technical field
The present invention relates to the nano material for drilling fluid field, especially a kind of high temperature resistance for oil or gas drilled hole liquid field is without fluorescence nano anti-collapse and anti-falling filtration agent and preparation method thereof.
Background technology
In drilling process, borehole well instability problem is to affect the principal element that drilling well is carried out smoothly always.In general, field by using adds anti-sloughing agent and fluid loss agent to solve this problem simultaneously.At present the high-temperature resistance of anti-sloughing agent and fluid loss agent is generally not high, is generally no more than 180 DEG C, and fluid loss agent is mostly linear polymeric polymkeric substance, can under high-temperature condition, increase the viscosity of drilling fluid.And when anti-sloughing agent and fluid loss agent, add and both increase drilling fluid cost, increased again workman's labour intensity, make drilling fluid complicated component simultaneously, safeguard that intractability increases, therefore the anti-collapse and anti-falling filtration treatment agent of the synthetic high temperature resistance of design is imperative.
Nanotechnology and nano material can be brought good solution for the problems referred to above.Because the micron order of growing in hard brittle shale even nano level microfracture is the major reason that causes borehole well instability.Therefore, strengthening is conducive to reduce the incidence of underground falling blocks complexcase to the shutoff of mud shale microfracture.And nano material has small-size effect, can be filled in the crack that shale is little, its surface can be large, and easily film forming has the effect of shutoff, anti-collapse and stabilizing borehole; Nano material, because size is little, can be filled in the nano pore in mud cake, and it is finer and close that the mud cake of formation forms than conventional material, has the effect of falling leak-off; The specific heat of nano material is large, and high-temperature resistance is strong; Meanwhile, nano material can be filled into micro-hole and the damage location of drilling tool, plays the effect of extreme boundary lubrication.In sum, nano material has the multi-functional effect of potion, plays anti-collapse inhibition simultaneously and falls the effect of leak-off.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and has high temperature resistance simultaneously concurrently, drilling fluid anti-collapse and that fall leak-off function is used without fluorescent nano material and preparation method thereof.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of high temperature resistance is without the preparation method of fluorescence nano anti-collapse and anti-falling filtration agent, adopt at least one non-water-soluble monomer and at least one with amido or sulfonic water-soluble monomer under non-oxygen atmosphere the condition that stirs, adopt the method for letex polymerization synthetic, the Nano grade of nanometer anti-collapse and anti-falling filtration agent is 10nm-5000nm, sulfonate radical or sulfonic group that the amido that inhibit feature is contained on its surface or temperature resistance ability are strong, and there is nucleocapsid structure.
The method of described letex polymerization is the method for emulsion copolymerization: at least one band amido or sulfonic water-soluble monomer are added to the water with at least one water-insoluble monomer, under the condition of non-oxygen atmosphere stirring, adopt radical initiator initiation reaction, under 20-99 DEG C of temperature of reaction, react 0.5-8h, obtain nanometer anti-collapse and anti-falling filtration agent.
Total dosage of described water-soluble monomer is the 2%-40% of solvent quality mark, and total dosage of water-insoluble monomer is the 3%-80% of solvent quality mark; In the time that water-soluble monomer is two or more, the ratio between water-soluble monomer is arbitrary proportion; In the time that water-insoluble monomer is two or more, the ratio between water-insoluble monomer is arbitrary proportion.
The method of described letex polymerization is the method for seeded emulsion polymerization: first water-insoluble monomer is placed in to water, non-oxygen atmosphere, under 20-99 DEG C and the condition that stirs, utilizes radical initiator to carry out initiation reaction, and reaction synthesizes nanometer ball after 0.05-2h; Then adopting the nanometer ball synthesizing is seed, adds at least one band amido or sulfonic water-soluble monomer and at least one water-insoluble monomer simultaneously, is allowed to condition at the peripheral continued growth of seed, and reaction 0.1-5h, obtains anti-collapse and anti-falling filtration nanometer additive.
The massfraction that adds for the first time water-insoluble monomer is the 3%-40% of solvent quality mark; The 3%-40% that the massfraction that again adds water-insoluble monomer after synthetic seed is solvent, the 2%-40% that the massfraction of the water-soluble monomer adding is solvent; In the time that water-soluble monomer is two or more, the ratio between water-soluble monomer is arbitrary proportion; In the time that water-insoluble monomer is two or more, the ratio between water-insoluble monomer is arbitrary proportion.
Described band amido or sulfonic water-soluble monomer refer to acrylamide, Methacrylamide, 2-acrylamide-2-methylpro panesulfonic acid, to vinylbenzenesulfonic acid, 2-acrylamide-2-methylpro panesulfonic acid sodium, to vinylbenzenesulfonic acid sodium, 2-acrylamide-2-methylpro panesulfonic acid potassium, to vinylbenzenesulfonic acid potassium, 2-acrylamide-2-methylpro panesulfonic acid ammonium, to vinylbenzenesulfonic acid ammonium.
Described water-insoluble monomer refers to methyl methacrylate, β-dimethyl-aminoethylmethacrylate, propyl methacrylate, butyl methacrylate, methyl acrylate, ethyl propenoate, propyl acrylate, butyl acrylate, maleic acid methyl esters, ethyl maleate, maleic acid propyl ester, maleic acid butyl ester, FUMARIC ACID TECH GRADE methyl esters, FUMARIC ACID TECH GRADE ethyl ester, FUMARIC ACID TECH GRADE propyl ester, FUMARIC ACID TECH GRADE butyl ester, vinylbenzene, p-methylstyrene, to methoxy styrene or to benzene diene.
Described radical initiator is single dose, as Diisopropyl azodicarboxylate, Diisopropyl azodicarboxylate amidine hydrochloride, dibenzoyl peroxide, Na 2s 2o 8, K 2s 2o 8or (NH 4) 2s 2o 8; Also can be redox system, as Na 2s 2o 8/ NaHSO 3, K 2s 2o 8/ NaHSO 3, (NH 4) 2s 2o 8/ NaHSO 3, Na 2s 2o 8/ FeSO 4, K 2s 2o 8/ FeSO 4, (NH 4) 2s 2o 8/ FeSO 4, Na 2s 2o 8/ Na 2s 2o 3, K 2s 2o 8/ Na 2s 2o 3, (NH 4) 2s 2o 8/ Na 2s 2o 3, Na 2s 2o 8/ Na 2sO 3, K 2s 2o 8/ Na 2sO 3, (NH 4) 2s 2o 8/ Na 2sO 3, Na 2s 2o 8/ aliphatic amide, K 2s 2o 8/ aliphatic amide, (NH 4) 2s 2o 8one in/aliphatic amide, described aliphatic amide is RNH 2, R 2nH, R 3n, R is the alkyl of 1-8 carbon, the massfraction of initiator is 0.005%-3%.
High temperature resistance prepared by aforesaid method is without fluorescence nano anti-collapse and anti-falling filtration agent.
The invention has the beneficial effects as follows: have the effect of good inhibition shale expansion, compare with clear water, it suppresses shale expansion reduced rate and can reach more than 70%; Without fluorescence; High temperature resistance can reach 220 DEG C; Compare with base slurry, filter loss reduced rate can reach more than 50%.
Brief description of the drawings
Fig. 1 be high temperature resistance of the present invention without fluorescence nano anti-collapse and anti-falling filtration agent stereoscan photograph (wherein a is the nano material that contains amine root, and b is the nano material that contains sulfonate radical).
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
High temperature resistance of the present invention is without the preparation method of fluorescence nano anti-collapse and anti-falling filtration agent, adopt at least one non-water-soluble monomer and at least one with amido or sulfonic water-soluble monomer under non-oxygen atmosphere the condition that stirs, adopt the method for letex polymerization synthetic, the Nano grade of nanometer anti-collapse and anti-falling filtration agent is 10nm-5000nm, sulfonate radical or sulfonic group that the amido that inhibit feature is contained on its surface or temperature resistance ability are strong, and there is nucleocapsid structure.
The method of described letex polymerization is the method for emulsion copolymerization: at least one band amido or sulfonic water-soluble monomer are added to the water with at least one water-insoluble monomer, under the condition of non-oxygen atmosphere stirring, adopt radical initiator initiation reaction, under 20-99 DEG C of temperature of reaction, react 0.5-8h, obtain nanometer anti-collapse and anti-falling filtration agent.
Total dosage of described water-soluble monomer is the 2%-40% of solvent quality mark, and total dosage of water-insoluble monomer is the 3%-80% of solvent quality mark; In the time that water-soluble monomer is two or more, the ratio between water-soluble monomer is arbitrary proportion; In the time that water-insoluble monomer is two or more, the ratio between water-insoluble monomer is arbitrary proportion.
The method of described letex polymerization is the method for seeded emulsion polymerization: first water-insoluble monomer is placed in to water, non-oxygen atmosphere, under 20-99 DEG C and the condition that stirs, utilizes radical initiator to carry out initiation reaction, and reaction synthesizes nanometer ball after 0.05-2h; Then adopting the nanometer ball synthesizing is seed, adds at least one band amido or sulfonic water-soluble monomer and at least one water-insoluble monomer simultaneously, is allowed to condition at the peripheral continued growth of seed, and reaction 0.1-5h, obtains anti-collapse and anti-falling filtration nanometer additive.
The massfraction that adds for the first time water-insoluble monomer is the 3%-40% of solvent quality mark; The 3%-40% that the massfraction that again adds water-insoluble monomer after synthetic seed is solvent, the 2%-40% that the massfraction of the water-soluble monomer adding is solvent; In the time that water-soluble monomer is two or more, the ratio between water-soluble monomer is arbitrary proportion; In the time that water-insoluble monomer is two or more, the ratio between water-insoluble monomer is arbitrary proportion.
Described band amido or sulfonic water-soluble monomer refer to acrylamide, Methacrylamide, 2-acrylamide-2-methylpro panesulfonic acid, to vinylbenzenesulfonic acid, 2-acrylamide-2-methylpro panesulfonic acid sodium, to vinylbenzenesulfonic acid sodium, 2-acrylamide-2-methylpro panesulfonic acid potassium, to vinylbenzenesulfonic acid potassium, 2-acrylamide-2-methylpro panesulfonic acid ammonium, to vinylbenzenesulfonic acid ammonium.
Described water-insoluble monomer refers to methyl methacrylate, β-dimethyl-aminoethylmethacrylate, propyl methacrylate, butyl methacrylate, methyl acrylate, ethyl propenoate, propyl acrylate, butyl acrylate, maleic acid methyl esters, ethyl maleate, maleic acid propyl ester, maleic acid butyl ester, FUMARIC ACID TECH GRADE methyl esters, FUMARIC ACID TECH GRADE ethyl ester, FUMARIC ACID TECH GRADE propyl ester, FUMARIC ACID TECH GRADE butyl ester, vinylbenzene, p-methylstyrene, to methoxy styrene or to benzene diene.
Described radical initiator can be single dose, as Diisopropyl azodicarboxylate, Diisopropyl azodicarboxylate amidine hydrochloride, dibenzoyl peroxide, Na 2s 2o 8, K 2s 2o 8or (NH 4) 2s 2o 8; Also can be redox system, as Na 2s 2o 8/ NaHSO 3, K 2s 2o 8/ NaHSO 3, (NH 4) 2s 2o 8/ NaHSO 3, Na 2s 2o 8/ FeSO 4, K 2s 2o 8/ FeSO 4, (NH 4) 2s 2o 8/ FeSO 4, Na 2s 2o 8/ Na 2s 2o 3, K 2s 2o 8/ Na 2s 2o 3, (NH 4) 2s 2o 8/ Na 2s 2o 3, Na 2s 2o 8/ Na 2sO 3, K 2s 2o 8/ Na 2sO 3, (NH 4) 2s 2o 8/ Na 2sO 3, Na 2s 2o 8/ aliphatic amide, K 2s 2o 8/ aliphatic amide or (NH 4) 2s 2o 8/ aliphatic amide, described aliphatic amide is RNH 2, R 2nH, R 3n, R is the alkyl of 1-8 carbon.When described initiator is redox system, the mol ratio of oxygenant and reductive agent is 1:0.1-1:10.The massfraction of initiator is 0.005%-3%.
High temperature resistance prepared by employing aforesaid method is without fluorescence nano anti-collapse and anti-falling filtration agent.
Below, taking the nanometer anti-collapse and anti-falling filtration agent that contains amido and sulfonate radical as example explanation.
Explain the present invention according to embodiment below, but the present invention is not limited to embodiment.
Embodiment 1
In 100mL distilled water, add 0.5g K 2s 2o 8after it is dissolved, in nitrogen environment, temperature of reaction is 60-70 DEG C, adds 5mL methyl methacrylate, 3g acrylamide, high-speed stirring, reaction 1.5h, centrifugal, the dry nanometer anti-collapse and anti-falling filtration agent 1 that gets final product to obtain.
Embodiment 2
After adding 0.3g Diisopropyl azodicarboxylate that it is dissolved in 100mL distilled water, in ar gas environment, temperature of reaction is 80-85 DEG C, add 5mL methyl acrylate, 3g2-acrylamide-2-methylpro panesulfonic acid, high-speed stirring, reaction 4h, centrifugal, the dry nanometer anti-collapse and anti-falling filtration agent 2 that gets final product to obtain.Embodiment 3
In 100mL tap water, add 0.5g (NH 4) 2s 2o 8after it is dissolved, in helium environment, temperature of reaction is 60-70 DEG C, add 3mL methyl methacrylate and 3mL methyl acrylate, under agitation condition, make after its reaction 40min, add 2mL methyl methacrylate and 3g acrylamide, under agitation condition, react again 1.0h, centrifugal, the dry nanometer anti-collapse and anti-falling filtration agent 3 that gets final product to obtain.
Embodiment 4
In 100mL distilled water, add 0.3g K 2s 2o 8after it is dissolved, in nitrogen environment, temperature of reaction is 60-70 DEG C, add 5mL methyl acrylate and 1mL maleic acid methyl esters, under agitation condition, make after its reaction 40min, add 2mL methyl acrylate, 1mL maleic acid methyl esters and 3g2-acrylamide-2-methylpro panesulfonic acid sodium, under agitation condition, react again 1.0h, centrifugal, the dry nanometer anti-collapse and anti-falling filtration agent 4 that gets final product to obtain.
Embodiment 5
In 100mL distilled water, add 0.2g K 2s 2o 8with 0.3g NaHSO 3after it is dissolved, in nitrogen environment, temperature of reaction is 35-45 DEG C, adds 20mL methyl methacrylate, 10mL ethyl propenoate and 15g acrylamide, high-speed stirring, reaction 3h, centrifugal, the dry nanometer anti-collapse and anti-falling filtration agent 5 that gets final product to obtain.
Embodiment 6
In 100mL tap water, add 0.2g K 2s 2o 8after it being dissolved with 0.9g aqueous methylamine solution, in ar gas environment, temperature of reaction is 55-65 DEG C, add 35mL methyl methacrylate, 3mL vinylbenzene, 7.5g acrylamide and 7.5g2-acrylamide-2-methylpro panesulfonic acid, high-speed stirring, reaction 5h, centrifugal, the dry nanometer anti-collapse and anti-falling filtration agent 6 that gets final product to obtain.
Embodiment 7
In 100mL distilled water, add 0.2g K 2s 2o 8with 0.3g NaHSO 3after it is dissolved, in nitrogen environment, temperature of reaction is 60-70 DEG C, add 30mL methyl methacrylate, stir after lower reaction 40min, then add 30mL methyl methacrylate, 9g acrylamide, 1g to vinyl benzenesulfonic acid and 3g2-acrylamide-2-methylpro panesulfonic acid ammonium, high-speed stirring, react again 2.0h, centrifugal, the dry nanometer anti-collapse and anti-falling filtration agent 7 that gets final product to obtain.
This class nanometer anti-collapse and anti-falling filtration agent is from the appearance white pulverulent solids.Be spherical (see figure 1) from the synthetic product of scanning electron microscope, and comparatively homogeneous of particle diameter; The nanometer additive of amino-contained is of a size of 230nm left and right, and the size of the nanometer additive that contains sulfonate radical is in 535nm left and right; Zeta electric potential characterizes its surface with negative charge.
Product that above-described embodiment obtains is carried out to the test of linear shale rate of expansion, testing method: first the product of test is scattered in to contain massfraction be 0.25% Na 2cO 3clear water in, be configured to the emulsion that the massfraction containing product is 1%; Then take 10g shale repression of swelling rate test special soil and be placed in mould, on tabletting machine, maintaining 5min with the pressure of 4MPa and make simulation core; Finally utilize shale repression of swelling instrument to carry out the test of shale repression of swelling rate to the said products, the test duration is 8h, reads last reading, then contrasts with the rate of expansion reading of clear water to calculate to suppress shale expansion reduced rate.Test result is as follows:
The inhibition of table 1 nanometer anti-collapse and anti-falling filtration agent
come compared with clear water, the inhibition shale expansion reduced rate of this type of nanometer anti-collapse and anti-falling filtration can reach more than 70%, has good inhibition.
Nanometer anti-collapse and anti-falling filtration agent is joined in the base slurry (In Xiazijie Region, xinjiang soil) that the massfraction of aquation 24h is 4%, make its massfraction 1%, on high speed agitator, stir after 20min, survey wherein pressure drop leak-off.Result is as follows:
Table 2 nanometer anti-collapse and anti-falling filtration agent leak-off and high temperature resistance effect fall
Note: AV--apparent viscosity; PV--plastic viscosity; Y--yield value; FL aPI--middle press filtration vector.
This nanometer anti-collapse and anti-falling filtration does not have a significant impact the rheological of drilling fluid, has good filtration capacity and the high-temperature resistance of falling.
In sum, content of the present invention is not limited in the above-described embodiment, and the knowledgeable people in same area can propose easily other embodiment within technical director's thought of the present invention, but this embodiment comprises within the scope of the present invention.

Claims (9)

1. a high temperature resistance is without the preparation method of fluorescence nano anti-collapse and anti-falling filtration agent, it is characterized in that, adopt at least one non-water-soluble monomer and at least one with amido or sulfonic water-soluble monomer under non-oxygen atmosphere the condition that stirs, adopt the method for letex polymerization synthetic, the Nano grade of nanometer anti-collapse and anti-falling filtration agent is 10nm-5000nm, sulfonate radical or sulfonic group that the amido that inhibit feature is contained on its surface or temperature resistance ability are strong, and there is nucleocapsid structure.
2. high temperature resistance according to claim 1 is without the preparation method of fluorescence nano anti-collapse and anti-falling filtration agent, it is characterized in that, the method of described letex polymerization is the method for emulsion copolymerization: at least one band amido or sulfonic water-soluble monomer are added to the water with at least one water-insoluble monomer, under the condition of non-oxygen atmosphere stirring, adopt radical initiator initiation reaction, under 20-99 DEG C of temperature of reaction, react 0.5-8h, obtain nanometer anti-collapse and anti-falling filtration agent.
3. high temperature resistance according to claim 1 is without the preparation method of fluorescence nano anti-collapse and anti-falling filtration agent, it is characterized in that, the method of described letex polymerization is the method for seeded emulsion polymerization: first water-insoluble monomer is placed in to water, non-oxygen atmosphere, 20-99 DEG C and stir condition under, utilize radical initiator to carry out initiation reaction, after reaction 0.05-2h, synthesize nanometer ball; Then adopting the nanometer ball synthesizing is seed, adds at least one band amido or sulfonic water-soluble monomer and at least one water-insoluble monomer simultaneously, is allowed to condition at the peripheral continued growth of seed, and reaction 0.1-5h, obtains anti-collapse and anti-falling filtration nanometer additive.
4. the preparation method without fluorescence nano anti-collapse and anti-falling filtration agent according to the high temperature resistance described in claim 1,2 or 3, it is characterized in that, described band amido or sulfonic water-soluble monomer refer to acrylamide, Methacrylamide, 2-acrylamide-2-methylpro panesulfonic acid, to vinylbenzenesulfonic acid, 2-acrylamide-2-methylpro panesulfonic acid sodium, to vinylbenzenesulfonic acid sodium, 2-acrylamide-2-methylpro panesulfonic acid potassium, to vinylbenzenesulfonic acid potassium, 2-acrylamide-2-methylpro panesulfonic acid ammonium, to vinylbenzenesulfonic acid ammonium.
5. according to claim 1, high temperature resistance described in 2 or 3 is without the preparation method of fluorescence nano anti-collapse and anti-falling filtration agent, it is characterized in that, described water-insoluble monomer refers to methyl methacrylate, β-dimethyl-aminoethylmethacrylate, propyl methacrylate, butyl methacrylate, methyl acrylate, ethyl propenoate, propyl acrylate, butyl acrylate, maleic acid methyl esters, ethyl maleate, maleic acid propyl ester, maleic acid butyl ester, FUMARIC ACID TECH GRADE methyl esters, FUMARIC ACID TECH GRADE ethyl ester, FUMARIC ACID TECH GRADE propyl ester, FUMARIC ACID TECH GRADE butyl ester, vinylbenzene, p-methylstyrene, to methoxy styrene, to benzene diene.
6. the preparation method without fluorescence nano anti-collapse and anti-falling filtration agent according to the high temperature resistance described in claim 2 or 3, is characterized in that, described radical initiator is Diisopropyl azodicarboxylate, Diisopropyl azodicarboxylate amidine hydrochloride, dibenzoyl peroxide, Na 2s 2o 8, K 2s 2o 8or (NH 4) 2s 2o 8, Na 2s 2o 8/ NaHSO 3, K 2s 2o 8/ NaHSO 3, (NH 4) 2s 2o 8/ NaHSO 3, Na 2s 2o 8/ FeSO 4, K 2s 2o 8/ FeSO 4, (NH 4) 2s 2o 8/ FeSO 4, Na 2s 2o 8/ Na 2s 2o 3, K 2s 2o 8/ Na 2s 2o 3, (NH 4) 2s 2o 8/ Na 2s 2o 3, Na 2s 2o 8/ Na 2sO 3, K 2s 2o 8/ Na 2sO 3, (NH 4) 2s 2o 8/ Na 2sO 3, Na 2s 2o 8/ aliphatic amide, K 2s 2o 8/ aliphatic amide, (NH 4) 2s 2o 8one in/aliphatic amide, described aliphatic amide is RNH 2, R 2nH, R 3n, R is the alkyl of 1-8 carbon, the massfraction of initiator is 0.005%-3%.
7. high temperature resistance according to claim 2 is without the preparation method of fluorescence nano anti-collapse and anti-falling filtration agent, it is characterized in that, total dosage of described water-soluble monomer is the 2%-40% of solvent quality mark, and total dosage of water-insoluble monomer is the 3%-80% of solvent quality mark; In the time that water-soluble monomer is two or more, the ratio between water-soluble monomer is arbitrary proportion; In the time that water-insoluble monomer is two or more, the ratio between water-insoluble monomer is arbitrary proportion.
8. high temperature resistance according to claim 3, without the preparation method of fluorescence nano anti-collapse and anti-falling filtration agent, is characterized in that, the massfraction that adds for the first time water-insoluble monomer is the 3%-40% of solvent quality mark; The 3%-40% that the massfraction that again adds water-insoluble monomer after synthetic seed is solvent, the 2%-40% that the massfraction of the water-soluble monomer adding is solvent; In the time that water-soluble monomer is two or more, the ratio between water-soluble monomer is arbitrary proportion; In the time that water-insoluble monomer is two or more, the ratio between water-insoluble monomer is arbitrary proportion.
9. the high temperature resistance that as claimed in claim 1 prepared by method is without fluorescence nano anti-collapse and anti-falling filtration agent.
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CN105330785A (en) * 2015-11-25 2016-02-17 中国石油集团渤海钻探工程有限公司 Temperature-resistant salt-resistant nano anti-collapse filtrate reducer for drilling fluid and preparation method thereof
CN105367710A (en) * 2015-12-26 2016-03-02 宋介珍 Preparation method for modified polyacrylamide filtrate reducer for drilling fluid
CN107418529A (en) * 2017-06-28 2017-12-01 常州明华运输有限公司 A kind of anti-caving agent for drilling fluid
CN108559463A (en) * 2018-01-17 2018-09-21 天津科技大学 A kind of Cellulose nanocrystal and preparation method thereof as water-base drilling fluid anti-sloughing agent
CN109810679A (en) * 2019-02-28 2019-05-28 西安石油大学 A kind of oligomeric clay hydrate inhibiter of deepwater drilling liquid polyhydroxy and its synthetic method
CN109810679B (en) * 2019-02-28 2021-02-09 西安石油大学 Polyhydroxy oligomeric clay hydration inhibitor for deepwater drilling fluid and synthetic method thereof

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