CN103382237A - Preparation method for dispersed oil well cement fluid loss additives - Google Patents
Preparation method for dispersed oil well cement fluid loss additives Download PDFInfo
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- CN103382237A CN103382237A CN2013103459077A CN201310345907A CN103382237A CN 103382237 A CN103382237 A CN 103382237A CN 2013103459077 A CN2013103459077 A CN 2013103459077A CN 201310345907 A CN201310345907 A CN 201310345907A CN 103382237 A CN103382237 A CN 103382237A
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Abstract
A preparation method for dispersed oil well cement fluid loss additives comprises (1), preparing initiator solution with 0.21-0.25 part by weight of ammonium persulfate and 1.03-1.25 parts by weight of deionized water; (2), putting 61.57-75.25 parts by weight of deionized water into a reaction kettle and putting 0.51-0.63 part by weight of super-fine calcium carbonate into the kettle in a stirring state; (3), putting 4.82-5.90 parts by weight of sodium carbonate into the kettle and enabling the sodium carbonate to dissolve; (4), sequentially putting 17.44-21.32 parts by weight of 2-acrylamide-2-methylpro panesulfonic acid, 1.54-1.88 parts by weight of acrylamide, 1.54-1.88 parts by weight of N, N-dimethyl-acrylamid, 0.41-0.51 part by weight of fumaric acid, 0.21-0.25 part by weight of N-Vinyl-2-pyrrolidone, 0.61-0.75 part by weight of acrylic acid, 0.08-0.10 part by weight of isopropanol and 0.02-0.03 part by weight of sodium benzoate into the kettle; (5), enabling the temperature of the material liquid to rise to 58-60 DEG C and utilizing sodium carbonate to adjust PH value to 4.0-5.0; (6), adding the initiator solution into the kettle, rapidly stirring the initiator solution and the material liquid for 2 minutes and waiting for polymerization, and stirring the initiator solution and the material liquid when the temperature is observed to rise to 77-80 DEG C; (7), continuing reaction at a temperature of 81+/-2 DEG C; (8), simply discharging the material liquid for microwave drying and crushing. The products prepared by the preparation method for the dispersed oil well cement fluid loss additives are wide in temperature adaptation range and good in salt-resistant performance.
Description
Technical field:
The present invention is that a kind of being applicable to can either significantly be improved cement paste rheological in drilling operation, does not affect again the preparation method of the oil-well cement filtrate reducer of product filtrate-loss control energy.
Background technology:
At present, adopt 2-acrylamide-2-methylpro panesulfonic acid (AMPS) multiple copolymer as the oil well cement paste dehydration agent, stable performance, strong adaptability, obtain the market approval, but some defectives of this series products are as poor in unsteady flow in some oil well cement pastes, the density that grout is partially thick, be difficult to reach design requirements has a strong impact on cementing quality and construction safety.
Summary of the invention:
The purpose of this invention is to provide and a kind ofly not only have high temperature resistance, anti-salt, and rheological is preferably arranged, the preparation method who is conducive to improve cementing quality and ensures the oil-well cement filtrate reducer of construction safety.
Technical scheme of the present invention is completed as follows, and a kind of preparation method of decentralized oil-well cement filtrate reducer is characterized in that: 1. at first make initiator solution with 0.21-0.25 weight part ammonium persulphate and 1.03-1.25 part deionized water standby; 2. the 61.57-75.25 parts by weight of deionized water is put in reactor and under whipped state, 0.51-0.63 weight part calcium carbonate superfine powder is dropped in still; 3. dropping into 4.82-5.90 weight part soda ash in the still makes it to dissolve fully; 4. drop into 2-acrylamide-2-methylpro panesulfonic acid 17.44-21.32 weight part, acrylamide 1.54-1.88 weight part, N,N-DMAA 1.54-1.88 weight part, fumaric acid 0.41-0.51 weight part, NVP 0.21-0.25 weight part, vinylformic acid 0.61-0.75 weight part, Virahol 0.08-0.10 weight part, Sodium Benzoate 0.02-0.03 weight part successively in still again; 5. feed temperature in still is raised to 58-60 ℃, regulates pH value to 4.0～5.0 with sodium carbonate; 6. slowly add initiator solution in still, rapid stirring 2 minutes stops stirring and waits for polymerization, observes when feed temperature rises to 77-80 ℃ and stirs; 7. temperature of reaction is constant in 81 ± 2 ℃ of continuation reactions, count reaction 120 minutes from adding initiator solution; 8. reacted feed liquid is emitted and carry out microwave drying, pulverize and to get final product.
Product of the present invention thermal adaptation wide ranges, anti-salt property in grout is good, can effectively control cement slurry water loss, and grout is had very strong dispersive ability.
Embodiment:
Embodiment 1,1. first to be mixed with initiator solution with 2.3 ㎏ ammonium persulphates and 11.4 ㎏ deionized waters standby; 2. 684.3 ㎏ deionized waters are put in reactor, at room temperature opened and stir, 5.7 ㎏ calcium carbonate superfine powders are dropped in still; 3. again 53.6 ㎏ soda ash are dropped into dissolving fully in still; 4. then drop into successively 2-acrylamide-2-methylpro panesulfonic acid 193.8 ㎏, acrylamide 17.1 ㎏, N,N-DMAA 17.1 ㎏, fumaric acid 4.6 ㎏, NVP 2.1 ㎏, vinylformic acid 6.8 ㎏, Virahol 0.9 ㎏, Sodium Benzoate 0.3 ㎏; 5. feed temperature is raised to 58-60 ℃, then with a small amount of soda ash, material liquid PH value is transferred to 4.0～5.0; 6. slowly add initiator solution, rapid stirring stops after 2 minutes stirring waits for polymerization, stirs when feed temperature rises to 77-80 ℃ again; 7. temperature of reaction is constant in 81 ± 2 ℃ of continuation reactions, count reaction 120 minutes from adding initiator solution; 8. reacted feed liquid is emitted, get final product with microwave drying, pulverizing.This water retaining uses when being applicable to general cementing operation, and anti-salt property is good, can effectively control cement slurry water loss, and grout is had stronger dispersive ability.
Embodiment 2,1. first to make initiator solution with 2.3 ㎏ ammonium persulphates and 11.4 ㎏ deionized waters standby; 2. again 683.9 ㎏ deionized waters are put in reactor, at room temperature opened and stir, 5.7 ㎏ calcium carbonate superfine powders are dropped in still; 3. again 53.6 ㎏ soda ash are dropped into dissolving fully in still; 4. then drop into successively 2-acrylamide-2-methylpro panesulfonic acid 193.8 ㎏, acrylamide 17.1 ㎏, N,N-DMAA 17.1 ㎏, fumaric acid 4.6 ㎏, NVP 2.5 ㎏, vinylformic acid 6.8 ㎏, Virahol 0.9 ㎏, Sodium Benzoate 0.3 ㎏; 5. with soda ash, material liquid PH value is transferred to 4.0～5.0 after feed temperature being raised to 58-60 ℃; 6. slowly add the initiator solution of having prepared in reactor, rapid stirring stops after 2 minutes stirring waits for polymerization, stirs when feed temperature rises to 77-80 ℃ again; 7. temperature of reaction is constant in 81 ± 2 ℃ of continuation reactions, count reaction 120 minutes from adding initiator solution; 8. reacted feed liquid is emitted with microwave drying, pulverizing and get final product.Products obtained therefrom is applicable to the larger oil well cement of denseness.This water retaining is applicable to the cementing operation of grout when thicker.
Claims (1)
1. the preparation method of a decentralized oil-well cement filtrate reducer, is characterized in that: 1. at first make initiator solution with 0.21-0.25 weight part ammonium persulphate and 1.03-1.25 part deionized water standby; 2. the 61.57-75.25 parts by weight of deionized water is put in reactor and under whipped state, 0.51-0.63 weight part calcium carbonate superfine powder is dropped in still; 3. dropping into 4.82-5.90 weight part soda ash in the still makes it to dissolve fully; 4. drop into 2-acrylamide-2-methylpro panesulfonic acid 17.44-21.32 weight part, acrylamide 1.54-1.88 weight part, N,N-DMAA 1.54-1.88 weight part, fumaric acid 0.41-0.51 weight part, NVP 0.21-0.25 weight part, vinylformic acid 0.61-0.75 weight part, Virahol 0.08-0.10 weight part, Sodium Benzoate 0.02-0.03 weight part successively in still again; 5. feed temperature in still is raised to 58-60 ℃, regulates pH value to 4.0～5.0 with sodium carbonate; 6. slowly add initiator solution in still, rapid stirring 2 minutes stops stirring and waits for polymerization, observes when feed temperature rises to 77-80 ℃ and stirs; 7. temperature of reaction is constant in 81 ± 2 ℃ of continuation reactions, count reaction 120 minutes from adding initiator solution; 8. reacted feed liquid is emitted and carry out microwave drying, pulverize and to get final product.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193897A (en) * | 2014-08-28 | 2014-12-10 | 中国石油集团渤海钻探工程有限公司 | High-temperature-resistant salt-resistant oil-well cement water-loss control agent and preparation method thereof |
| CN106146732A (en) * | 2015-04-15 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of cement filter loss-reducing agent for oil well and its preparation method and application |
| CN109651563A (en) * | 2018-12-24 | 2019-04-19 | 成都欧美克石油科技股份有限公司 | A kind of multipolymer fluid loss agent and preparation method thereof |
| CN110305641A (en) * | 2019-07-17 | 2019-10-08 | 嘉华特种水泥股份有限公司 | A kind of modified fluid loss agent |
| CN115926073A (en) * | 2022-12-02 | 2023-04-07 | 西南石油大学 | Nano calcium carbonate modified acrylamide amphoteric copolymer and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101397491A (en) * | 2008-10-27 | 2009-04-01 | 中国科学院长春应用化学研究所 | Multi-element co-polymerization oil well cement fluid loss additive and preparation method thereof |
| CN101397492A (en) * | 2008-10-27 | 2009-04-01 | 中国科学院长春应用化学研究所 | Heatproof oil well cement fluid loss additive and preparation method thereof |
| CN102153698A (en) * | 2011-05-11 | 2011-08-17 | 卫辉市化工有限公司 | Preparation method of solid cement retarder |
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2013
- 2013-08-09 CN CN2013103459077A patent/CN103382237A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101397491A (en) * | 2008-10-27 | 2009-04-01 | 中国科学院长春应用化学研究所 | Multi-element co-polymerization oil well cement fluid loss additive and preparation method thereof |
| CN101397492A (en) * | 2008-10-27 | 2009-04-01 | 中国科学院长春应用化学研究所 | Heatproof oil well cement fluid loss additive and preparation method thereof |
| CN102153698A (en) * | 2011-05-11 | 2011-08-17 | 卫辉市化工有限公司 | Preparation method of solid cement retarder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193897A (en) * | 2014-08-28 | 2014-12-10 | 中国石油集团渤海钻探工程有限公司 | High-temperature-resistant salt-resistant oil-well cement water-loss control agent and preparation method thereof |
| CN106146732A (en) * | 2015-04-15 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of cement filter loss-reducing agent for oil well and its preparation method and application |
| CN106146732B (en) * | 2015-04-15 | 2018-06-19 | 中国石油化工股份有限公司 | A kind of cement filter loss-reducing agent for oil well and its preparation method and application |
| CN109651563A (en) * | 2018-12-24 | 2019-04-19 | 成都欧美克石油科技股份有限公司 | A kind of multipolymer fluid loss agent and preparation method thereof |
| CN109651563B (en) * | 2018-12-24 | 2021-03-16 | 成都欧美克石油科技股份有限公司 | Multi-polymer fluid loss agent and preparation method thereof |
| CN110305641A (en) * | 2019-07-17 | 2019-10-08 | 嘉华特种水泥股份有限公司 | A kind of modified fluid loss agent |
| CN115926073A (en) * | 2022-12-02 | 2023-04-07 | 西南石油大学 | Nano calcium carbonate modified acrylamide amphoteric copolymer and preparation method thereof |
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Application publication date: 20131106 |