CN110746949A - Oil well cement polymer fluid loss agent and preparation method thereof - Google Patents
Oil well cement polymer fluid loss agent and preparation method thereof Download PDFInfo
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- 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
- C09K8/487—Fluid loss control additives; Additives for reducing or preventing circulation loss
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- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
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Abstract
The invention discloses an oil well cement polymer fluid loss agent and a preparation method thereof, wherein the fluid loss agent comprises the following components: 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, acrylic acid, yellow dextrin, 40 wt% sodium hydroxide aqueous solution, deionized water and ammonium persulfate. The oil well cement polymer fluid loss agent is added into the mixture with the density of 1.90g/cm3The cement paste (prepared by cement and water without adding other additives) can meet the requirements that the reading of a six-speed viscometer is less than 300 at 600rpm/min, the reading at 6rpm/min is more than or equal to 10, and the reading at 3rpm/min is more than or equal to 5.
Description
Technical Field
The invention relates to the technical field of oil and gas exploitation and well cementation. In particular to an oil well cement polymer fluid loss agent and a preparation method thereof.
Background
The existing polymer fluid loss agent for oil well cement slurry is a chain polymer polymerized by using 2-acrylamide-2-methylpropanesulfonic acid, acrylamide and acrylic acid as main monomers. The suspension property and the flow property of the cement paste cannot be well adjusted and controlled (according to practical experience, the density is 1.90g/cm3The cement paste (which is prepared from cement and water and is not added with other additives) is as follows: when the six-speed viscometer has no reading at 600rpm/min, the rheological property of the cement slurry is poor, and the cement is well-fixed
A reading of less than 300 is generally required for pumping; the reading of the six-speed viscometer at 6rpm/min is less than 10, and the reading of the six-speed viscometer at 3rpm/min is less than 5, which indicates that the suspension property of the cement slurry is poor, and other additives need to be added during actual use, so that the preparation difficulty and the cost of the well cementation cement slurry can be increased). Under the condition of poor suspension property of cement slurry, free liquid is easily generated at the upper part of the settled cement slurry to cause oil, gas and water channeling, and the density of the cement stone at the upper part and the lower part in the solidification process is different to cause different strength, thereby seriously influencing the well cementation quality and limiting the application range of the cement stone. The polymer fluid loss additive in the prior art can not meet the requirements that the reading of a six-speed viscometer is less than 300 at 600rpm/min, the reading of the six-speed viscometer is more than or equal to 10 at 6rpm/min, and the reading of the six-speed viscometer is more than or equal to 5 at 3rpm/min (the density is 1.90 g/c)m3The cement paste is prepared from cement and water, and other additives are not added. In order to ensure the stability of well cementation cement slurry and the well cementation quality, an oil well cement polymer fluid loss agent with good rheological property and good suspension property needs to be prepared.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the oil well cement polymer fluid loss agent capable of well adjusting the suspension property and the fluidity of cement paste simultaneously and the preparation method thereof.
In order to solve the technical problems, the invention provides the following technical scheme:
an oil well cement polymer fluid loss agent comprises the following components: 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, acrylic acid, yellow dextrin, 40 wt% sodium hydroxide aqueous solution, deionized water and ammonium persulfate.
The oil well cement polymer fluid loss agent comprises the following components in parts by weight: 139-140 parts of 2-acrylamide-2-methylpropanesulfonic acid, 28-29 parts of acrylamide, 9-10 parts of acrylic acid, 5-6 parts of yellow dextrin, 79-80 parts of 40 wt% sodium hydroxide aqueous solution, 105-107 parts of deionized water and 0.1-0.2 part of ammonium persulfate.
The preparation method of the oil well cement polymer fluid loss agent comprises the following steps:
(1) preparing an initiator solution by using deionized water and ammonium persulfate for later use;
(2) putting deionized water into a reaction kettle, and adding 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, acrylic acid and yellow dextrin in turn while stirring for dissolving and mixing uniformly;
(3) adjusting the pH value of the materials in the reaction kettle to 4-5 by using a sodium hydroxide solution, and controlling the temperature of the materials in the reaction kettle to be below 40 ℃ in the period;
(4) the initiator solution was slowly added to carry out polymerization.
The preparation method of the oil well cement polymer fluid loss agent comprises the following steps of (1): 5-6 parts by weight of deionized water and 0.1-0.2 part by weight of ammonium persulfate are prepared into initiator solution for later use.
The preparation method of the oil well cement polymer fluid loss agent comprises the following steps of (2): putting 100-101 parts by weight of deionized water into a reaction kettle, and sequentially adding 139-140 parts by weight of 2-acrylamido-2-methylpropanesulfonic acid, 28-29 parts by weight of acrylamide, 9-10 parts by weight of acrylic acid and 5-6 parts by weight of yellow dextrin during stirring for dissolving and mixing uniformly.
The preparation method of the oil well cement polymer fluid loss agent comprises the following steps of (3): and (3) adjusting the pH value of the materials in the reaction kettle to 4-5 by using a sodium hydroxide solution with the concentration of 40%.
The preparation method of the oil well cement polymer fluid loss agent comprises the following steps of (4): slowly adding an initiator solution, quickly stirring for 2 minutes, stopping stirring, pumping the materials into a polymerization kettle, heating to 55-56 ℃, waiting for polymerization, keeping the temperature for 40 minutes after a colloid is formed, cooling to room temperature, drying and crushing.
The preparation method of the oil well cement polymer fluid loss agent comprises the following steps:
(1) preparing an initiator solution by using 5 parts by weight of deionized water and 0.1 part by weight of ammonium persulfate for later use;
(2) putting 100 parts by weight of deionized water into a reaction kettle, and sequentially adding 139 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid, 28 parts by weight of acrylamide, 9 parts by weight of acrylic acid and 5 parts by weight of yellow dextrin while stirring for dissolving and uniformly mixing;
(3) adjusting the pH value of the materials in the reaction kettle to 4-5 by using a sodium hydroxide solution with the concentration of 40%, and controlling the temperature of the materials in the reaction kettle to be below 40 ℃ in the period;
(4) slowly adding an initiator solution, quickly stirring for 2 minutes, stopping stirring, pumping the materials into a polymerization kettle, heating to 55-56 ℃, waiting for polymerization, keeping the temperature for 40 minutes after a colloid is formed, cooling to room temperature, drying and crushing.
The technical scheme of the invention achieves the following beneficial technical effects:
the invention achieves the purpose of greatly improving the suspension capacity of the cement paste without influencing the rheological property of the cement paste by adopting monomers such as 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, acrylic acid and the like and yellow dextrin for graft copolymerization.
The oil well cement polymer fluid loss agent is added into the mixture with the density of 1.90g/cm3The cement paste (prepared by cement and water without adding other additives) can meet the requirements that the reading of a six-speed viscometer is less than 300 at 600rpm/min, the reading at 6rpm/min is more than or equal to 10, and the reading at 3rpm/min is more than or equal to 5.
Detailed Description
Example 1
(1) Firstly, 5kg of deionized water and 0.1kg of ammonium persulfate are taken out to prepare an initiator solution for later use;
(2) then 100kg of deionized water is put into the reaction kettle, stirring is started, 139kg of 2-acrylamide-2-methylpropanesulfonic acid, 28k of acrylamide, 9kg of acrylic acid and 2kg of yellow dextrin (2 # modified starch produced by Yongcheng trade corn development Co., Ltd.) are sequentially added for dissolving and mixing uniformly;
(3) using 79kg of 40 wt% sodium hydroxide solution to adjust the pH of the mixed material liquid in the kettle to 4-5, and controlling the temperature of the mixed material liquid in the kettle to be below 40 ℃ in the period;
(4) slowly adding initiator solution, rapidly stirring for 2 min, stopping stirring, adding the materials into a polymerization kettle, heating to 55-56 deg.C, waiting for polymerization, maintaining the temperature for 40 min after colloid is formed, cooling to room temperature, pressurizing to extrude colloid, oven drying, and pulverizing.
Example 2
(1) Firstly, 5kg of deionized water and 0.1kg of ammonium persulfate are taken out to prepare an initiator solution for later use;
(2) then 100kg of deionized water is put into the reaction kettle, stirring is started, 139kg of 2-acrylamide-2-methylpropanesulfonic acid, 28k of acrylamide, 9kg of acrylic acid and 5kg of yellow dextrin (2 # modified starch produced by Yongcheng trade corn development Co., Ltd.) are sequentially added for dissolving and mixing uniformly;
(3) adjusting the pH value of the mixed material liquid in the kettle to 4-5 by using 79kg of 40 wt% sodium hydroxide solution, and controlling the temperature of the mixed material liquid in the kettle to be below 40 ℃ in the period;
(4) slowly adding initiator solution, rapidly stirring for 2 min, stopping stirring, adding the materials into a polymerization kettle, heating to 55-56 deg.C, waiting for polymerization, maintaining the temperature for 40 min after colloid is formed, cooling to room temperature, pressurizing to extrude colloid, oven drying, and pulverizing.
Evaluation data:
the oil well cement polymer fluid loss additives prepared in example 1 and example 2 were added as additives at a density of 1.90g/cm at 80 ℃ in an amount of 0.7 wt% (based on the mass of cement used in preparing the cement slurry)3The rheological sedimentation stability of the cement paste was measured, and the test results are shown in Table 1.
Comparative example 1: the suspension property of the polymer fluid loss additive of the commercially available oil well cement G31S series. The addition method is the same as that of the example 1 and the example 2, the rheological sedimentation stability of the cement paste is measured, and the test result is shown in the table 1.
Comparative example 2: the polymer fluid loss additive of the commercially available oil well cement is in the G310S series. The addition method is the same as that of the example 1 and the example 2, the rheological sedimentation stability of the cement paste is measured, and the test result is shown in the table 1.
TABLE 1
As can be seen from the data in table 1:
1. the suspension property of the commercial oil well cement polymer fluid loss agent in the comparative example 1 is G31S series, the six-speed viscometer has the reading of more than 10 at 6rpm/min and the reading of more than 5 at 3rpm/min, and the suspension property is good. But its rheological properties are poor: when the rotating speed is 600rpm/min, the reading of the six-speed viscometer exceeds 300, so that the instrument cannot display the reading, which indicates that the rheological property of the cement paste is poor; when in actual well cementation, the six-speed viscometer rotates at 600rpm/min, and the reading is generally required to be less than 300 so as to be convenient for pumping.
Introduction of oil well cement fluid loss additive G31S: the applicant started production in 2017, and mainly sold to foreign customers. The performance characteristics are as follows: a. G31S is prepared by polymerization modification of AMPS (2-acrylamide-2-methylpropanesulfonic acid), low molecular weight amide, polyhydroxycarboxylic acid and the like. b. Temperature resistance: 30 to 160 ℃. c. Salt resistance: fresh water until saturated brine. d. Water solubility: is easily dissolved in water. e. General dosage ranges: 0.5-1.2% (BWOC). f. Has good compatibility with other additives. g. Compatibility with cement: it is suitable for various oil well cements. h. The cement paste thickening transition time is short and is close to right-angle thickening. i. The method is suitable for designing low-density, conventional-density and high-density cement slurry systems. j. Has a slight retarding effect on cement paste. The technical indexes are shown in the following table 2:
TABLE 2
The cement slurry formulations in table 2: g-grade oil well cement, fluid loss agent G31S 0.8.8% (BWOC), water cement ratio 0.44, cement paste density 1.90 + -0.01G/cm3Water quality distilled water or drinking water.
2. The commercial oil well cement polymer fluid loss additive dispersion G310S series of comparative example 2, although having better rheological properties: when the rotating speed is 600rpm/min, the reading of the six-speed viscometer is less than 300, and the pumping is convenient when the well is actually cemented. However, the six-speed viscometer reads less than 10 at 6rpm/min, less than 5 at 3rpm/min, and has a top-bottom density difference of greater than 0.03g/cm3The suspension performance is not good. The larger the density difference is, the smaller the suspension ability is, and the smaller the density difference is, the better the suspension ability is; in practice, the cementing slurry generally requires the difference between the upper and lower densities to be less than 0.03g/cm3。
Introduction of oil well cement fluid loss additive G310S: the applicant starts production in 2012, obtains the prize of scientific and technological achievements in Henan province in 2013, and obtains the prize of scientific and technological progress in Xinxiang city. The performance characteristics are as follows: A. G310S is polymerized from AMPS, low molecular weight amides, polyhydroxycarboxylic acids, and the like. B. Temperature resistance: 30 to 160 ℃. C. Salt resistance: fresh water until saturated brine. D. Water solubility: is easily dissolved in water. E. General dosage ranges: 0.7-1.0% (BWOC). F. Has good compatibility with other additives. G. The method is suitable for designing conventional density and high density cement slurry systems. The technical indexes are shown in the following table 3:
TABLE 3
| Detecting items | Technical index |
| Appearance of the product | Hardening-free powder or granule |
| Water content% | ≤8.0 |
| Fineness (0.315mm sieve residue)% | ＜15.0 |
| Initial consistency, Bc/80 ℃ 46.5MPa.45min | ≤30 |
| Thickening linear strain value, Bc | ≤10 |
| Transition time, min | ≤40 |
| Water loss, ml/80 ℃ 6.9MPa.30min | ≤150 |
| Free liquid,% of | ≤1.4 |
| Compressive strength, MPa/102 deg.C, 21MPa.24h | ≥14 |
The cement slurry formulations in table 3: g-grade oil well cement, fluid loss agent G310S 0.8.8% (BWOC), water cement ratio 0.44, cement paste density 1.90 + -0.01G/cm3Water quality distilled water or drinking water.
3. In example 1: the thickening curve has no phenomenon of bulging, and the suspending performance of the cement paste can be improved although the addition amount of the yellow dextrin is small. When the rotating speed of the six-speed viscometer is 600rpm/min, the reading of the six-speed viscometer is less than 300, and the six-speed viscometer has better rheological property and is convenient for pumping during actual well cementation. The six-speed viscometer has the reading of less than 10 at 6rpm/min, the reading of more than 5 at 3rpm/min, the difference between the upper density and the lower density of 0, and better suspension performance than the comparative example 1 and the comparative example 2, but cannot simultaneously adjust the rheological property and the suspension capacity of the cement paste.
4. In example 2: the thickening curve has no rising and bulging phenomena, compared with the yellow dextrin adding amount in the embodiment 1, the addition amount is increased, when the rotating speed of the six-speed viscometer is 600rpm/min, the reading of the six-speed viscometer is less than 300, the six-speed viscometer has better rheological property, and the pumping is convenient during actual well cementation. The six-speed viscometer has the reading of more than 10 at 6rpm/min, the reading of more than 5 at 3rpm/min, the difference between the upper density and the lower density of 0 and good suspension performance. Thus, the product obtained in example 2 possesses better rheology and suspension ability.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.
Claims (8)
1. The oil well cement polymer fluid loss agent is characterized by comprising the following components: 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, acrylic acid, yellow dextrin, 40 wt% sodium hydroxide aqueous solution, deionized water and ammonium persulfate.
2. The oil well cement polymer fluid loss agent according to claim 1, wherein the weight ratio of each component is as follows: 139-140 parts of 2-acrylamide-2-methylpropanesulfonic acid, 28-29 parts of acrylamide, 9-10 parts of acrylic acid, 5-6 parts of yellow dextrin, 79-80 parts of 40 wt% sodium hydroxide aqueous solution, 105-107 parts of deionized water and 0.1-0.2 part of ammonium persulfate.
3. The preparation method of the oil well cement polymer fluid loss agent is characterized by comprising the following steps:
(1) preparing an initiator solution by using deionized water and ammonium persulfate for later use;
(2) putting deionized water into a reaction kettle, and adding 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, acrylic acid and yellow dextrin in turn while stirring for dissolving and mixing uniformly;
(3) adjusting the pH value of the materials in the reaction kettle to 4-5 by using a sodium hydroxide solution, and controlling the temperature of the materials in the reaction kettle to be below 40 ℃ in the period;
(4) the initiator solution was slowly added to carry out polymerization.
4. The method for preparing an oil well cement polymer fluid loss additive according to claim 4, wherein in step (1): 5-6 parts by weight of deionized water and 0.1-0.2 part by weight of ammonium persulfate are prepared into initiator solution for later use.
5. The method for preparing an oil well cement polymer fluid loss additive according to claim 4, wherein in step (2): putting 100-101 parts by weight of deionized water into a reaction kettle, and sequentially adding 139-140 parts by weight of 2-acrylamido-2-methylpropanesulfonic acid, 28-29 parts by weight of acrylamide, 9-10 parts by weight of acrylic acid and 5-6 parts by weight of yellow dextrin during stirring for dissolving and mixing uniformly.
6. The method for preparing an oil well cement polymer fluid loss additive according to claim 4, wherein in step (3): and (3) adjusting the pH value of the materials in the reaction kettle to 4-5 by using a sodium hydroxide solution with the concentration of 40%.
7. The method for preparing an oil well cement polymer fluid loss additive according to claim 4, wherein in step (4): slowly adding an initiator solution, quickly stirring for 2 minutes, stopping stirring, pumping the materials into a polymerization kettle, heating to 55-56 ℃, waiting for polymerization, keeping the temperature for 40 minutes after a colloid is formed, cooling to room temperature, drying and crushing.
8. The method for preparing the fluid loss additive for oil well cement polymers as claimed in claim 4, which comprises the following steps:
(1) preparing an initiator solution by using 5 parts by weight of deionized water and 0.1 part by weight of ammonium persulfate for later use;
(2) putting 100 parts by weight of deionized water into a reaction kettle, and sequentially adding 139 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid, 28 parts by weight of acrylamide, 9 parts by weight of acrylic acid and 5 parts by weight of yellow dextrin while stirring for dissolving and uniformly mixing;
(3) adjusting the pH value of the materials in the reaction kettle to 4-5 by using a sodium hydroxide solution with the concentration of 40%, and controlling the temperature of the materials in the reaction kettle to be below 40 ℃ in the period;
(4) slowly adding an initiator solution, quickly stirring for 2 minutes, stopping stirring, pumping the materials into a polymerization kettle, heating to 55-56 ℃, waiting for polymerization, keeping the temperature for 40 minutes after a colloid is formed, cooling to room temperature, drying and crushing.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114437296A (en) * | 2020-10-31 | 2022-05-06 | 中国石油天然气股份有限公司 | Filtrate reducer and preparation method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0356242A2 (en) * | 1988-08-26 | 1990-02-28 | Ciba Specialty Chemicals Water Treatments Limited | Polymerisation processes and products |
| CN1045587A (en) * | 1989-03-17 | 1990-09-26 | 成都科技大学 | A kind of manufacture method of lower-loss agent of cement pulp |
| US20090264557A1 (en) * | 2007-01-11 | 2009-10-22 | Halliburton Energy Services, Inc. | Cement Compositions Comprising Humic Acid Grafted Fluid Loss Control Additives |
| CN101698794A (en) * | 2009-10-21 | 2010-04-28 | 山东沃尔德油田技术有限公司 | High temperature-resistance salt-resistance oil well cement filtrate reducer |
| CN101818054A (en) * | 2010-04-02 | 2010-09-01 | 卫辉市化工有限公司 | Solid oil-well cement filtrate reducer |
| CN101818051A (en) * | 2010-03-19 | 2010-09-01 | 西南石油大学 | AM (Acrylamide)/DMDAAC (Dimethyl Diallyl Ammonium Chloride)/cyclodextrin polymer filtrate reducer and preparation method thereof |
| CN102212351A (en) * | 2010-04-02 | 2011-10-12 | 卫辉市化工有限公司 | Water retaining agent for liquid well cementing cement |
| CN102241801A (en) * | 2011-05-20 | 2011-11-16 | 西南石油大学 | Acrylic acid(AA)/sodium 2-acrylamide-2-methylpro panesulfonic acid(AMPS-Na)/diisocyanate-modified allyl cyclodextrin (MACD) copolymer |
| CN102618237A (en) * | 2012-03-02 | 2012-08-01 | 西南石油大学 | Polymer clay stabilizer containing Beta-cyclodextrin structure and synthesis method thereof |
| CN104531101A (en) * | 2014-12-31 | 2015-04-22 | 北京培康佳业技术发展有限公司 | Filtrate reducer for well drilling fluid and preparing method and application thereof |
| CN105713142A (en) * | 2015-12-29 | 2016-06-29 | 江苏苏博特新材料股份有限公司 | Set-retarding type water reducing agent and preparation method thereof |
| CN110054430A (en) * | 2019-04-04 | 2019-07-26 | 北京盛大风华科技有限公司 | A kind of pervious concrete thickening mentions strong type polycarboxylate water-reducer |
-
2019
- 2019-10-22 CN CN201911004657.4A patent/CN110746949B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0356242A2 (en) * | 1988-08-26 | 1990-02-28 | Ciba Specialty Chemicals Water Treatments Limited | Polymerisation processes and products |
| CN1045587A (en) * | 1989-03-17 | 1990-09-26 | 成都科技大学 | A kind of manufacture method of lower-loss agent of cement pulp |
| US20090264557A1 (en) * | 2007-01-11 | 2009-10-22 | Halliburton Energy Services, Inc. | Cement Compositions Comprising Humic Acid Grafted Fluid Loss Control Additives |
| CN101698794A (en) * | 2009-10-21 | 2010-04-28 | 山东沃尔德油田技术有限公司 | High temperature-resistance salt-resistance oil well cement filtrate reducer |
| CN101818051A (en) * | 2010-03-19 | 2010-09-01 | 西南石油大学 | AM (Acrylamide)/DMDAAC (Dimethyl Diallyl Ammonium Chloride)/cyclodextrin polymer filtrate reducer and preparation method thereof |
| CN101818054A (en) * | 2010-04-02 | 2010-09-01 | 卫辉市化工有限公司 | Solid oil-well cement filtrate reducer |
| CN102212351A (en) * | 2010-04-02 | 2011-10-12 | 卫辉市化工有限公司 | Water retaining agent for liquid well cementing cement |
| CN102241801A (en) * | 2011-05-20 | 2011-11-16 | 西南石油大学 | Acrylic acid(AA)/sodium 2-acrylamide-2-methylpro panesulfonic acid(AMPS-Na)/diisocyanate-modified allyl cyclodextrin (MACD) copolymer |
| CN102618237A (en) * | 2012-03-02 | 2012-08-01 | 西南石油大学 | Polymer clay stabilizer containing Beta-cyclodextrin structure and synthesis method thereof |
| CN104531101A (en) * | 2014-12-31 | 2015-04-22 | 北京培康佳业技术发展有限公司 | Filtrate reducer for well drilling fluid and preparing method and application thereof |
| CN105713142A (en) * | 2015-12-29 | 2016-06-29 | 江苏苏博特新材料股份有限公司 | Set-retarding type water reducing agent and preparation method thereof |
| CN110054430A (en) * | 2019-04-04 | 2019-07-26 | 北京盛大风华科技有限公司 | A kind of pervious concrete thickening mentions strong type polycarboxylate water-reducer |
Non-Patent Citations (1)
| Title |
|---|
| 赵田红等: "AMPS/AM/AA共聚物的合成及性能研究 ", 《油气田地面工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114437296A (en) * | 2020-10-31 | 2022-05-06 | 中国石油天然气股份有限公司 | Filtrate reducer and preparation method thereof |
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