CN104386835B - A kind of oil field well scale inhibitor and preparation method thereof - Google Patents
A kind of oil field well scale inhibitor and preparation method thereof Download PDFInfo
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- CN104386835B CN104386835B CN201410683233.6A CN201410683233A CN104386835B CN 104386835 B CN104386835 B CN 104386835B CN 201410683233 A CN201410683233 A CN 201410683233A CN 104386835 B CN104386835 B CN 104386835B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000002455 scale inhibitor Substances 0.000 title claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 38
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims abstract description 19
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 19
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims abstract description 19
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910052939 potassium sulfate Inorganic materials 0.000 claims abstract description 19
- 235000011151 potassium sulphates Nutrition 0.000 claims abstract description 19
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 19
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 19
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 19
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 19
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 9
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical class OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 claims 4
- 229960004418 trolamine Drugs 0.000 claims 4
- 238000013019 agitation Methods 0.000 claims 2
- 238000009413 insulation Methods 0.000 claims 2
- 238000005303 weighing Methods 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 31
- BPSYZMLXRKCSJY-UHFFFAOYSA-N 1,3,2-dioxaphosphepan-2-ium 2-oxide Chemical compound O=[P+]1OCCCCO1 BPSYZMLXRKCSJY-UHFFFAOYSA-N 0.000 abstract 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- WFRXSOIFNFJAFL-UHFFFAOYSA-N P1(OCCCCO1)=O.C(CN)N Chemical compound P1(OCCCCO1)=O.C(CN)N WFRXSOIFNFJAFL-UHFFFAOYSA-N 0.000 description 13
- 238000001816 cooling Methods 0.000 description 7
- 239000003129 oil well Substances 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/14—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus
- C02F5/145—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing phosphorus combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
本发明公开了一种油田井下防垢剂及其制备方法，按以下原料重量份数配比制成：碳酸钠35-60份、硅石25-45份、硫酸钾15-35份、乙二胺四亚甲基膦酸盐12-30份、六偏磷酸钠8-20份、三乙醇胺6-18份、乙二醇单丁醚12-25份、氨基三亚甲基膦酸15-30份、工业石脑油8-25份、水35-65份。本发明所述防垢剂可用于油田井下的清垢和防垢，使用方便、安全、持久，是一种实用、长效的防垢剂。The invention discloses an oilfield downhole antiscaling agent and a preparation method thereof, which is prepared according to the following raw material proportions by weight: 35-60 parts of sodium carbonate, 25-45 parts of silica, 15-35 parts of potassium sulfate, and ethylenediamine 12-30 parts of tetramethylene phosphonate, 8-20 parts of sodium hexametaphosphate, 6-18 parts of triethanolamine, 12-25 parts of ethylene glycol monobutyl ether, 15-30 parts of amino trimethylene phosphonic acid, 8-25 parts of industrial naphtha, 35-65 parts of water. The antiscaling agent of the present invention can be used for cleaning and preventing scales in oilfield wells, is convenient, safe and durable to use, and is a practical and long-acting antiscaling agent.
Description
技术领域 technical field
本发明涉及油田除垢领域，尤其涉及一种油田井下防垢剂及其制备方法。 The invention relates to the field of oilfield scale removal, in particular to an oilfield downhole scale inhibitor and a preparation method thereof.
背景技术 Background technique
当油田开发进入中、高含水期后，采出液中的水矿化度高。油井腐蚀结垢严重。常用的方法是通过油井油管与套管的环形空间加入缓蚀阻垢剂到油井中，能起到防垢的作用，但阻垢效率较低，只有85%左右。不能满足油井缓蚀阻垢的要求。 When the oilfield development enters the medium and high water cut period, the water salinity in the produced fluid is high. Oil wells are severely corroded and scaled. The commonly used method is to add corrosion and scale inhibitors into the oil well through the annular space between oil well tubing and casing, which can prevent scale, but the scale inhibition efficiency is low, only about 85%. It cannot meet the requirements of corrosion and scale inhibition in oil wells.
发明内容 Contents of the invention
解决的技术问题:Technical issues solved:
为了提供一种阻垢效率高，且适用于油田开发领域的防垢剂，本发明提供了一种油田井下防垢剂及其制备方法。 In order to provide an anti-scaling agent with high anti-scaling efficiency and suitable for the field of oil field development, the invention provides an anti-scaling agent for downhole oil field and a preparation method thereof.
技术方案：Technical solutions:
一种油田井下防垢剂，按以下原料重量份数配比制成：碳酸钠35-60份、硅石25-45份、硫酸钾15-35份、乙二胺四亚甲基膦酸盐12-30份、六偏磷酸钠8-20份、三乙醇胺6-18份、乙二醇单丁醚12-25份、氨基三亚甲基膦酸15-30份、工业石脑油8-25份、水35-65份。 An oil field downhole antiscaling agent, which is prepared according to the following ratio of raw materials by weight: 35-60 parts of sodium carbonate, 25-45 parts of silica, 15-35 parts of potassium sulfate, and 12 parts of ethylenediamine tetramethylene phosphonate -30 parts, sodium hexametaphosphate 8-20 parts, triethanolamine 6-18 parts, ethylene glycol monobutyl ether 12-25 parts, amino trimethylene phosphonic acid 15-30 parts, industrial naphtha 8-25 parts , 35-65 parts of water.
作为本发明的一种优选方案，按以下原料重量份数配比制成：碳酸钠40-55份、硅石30-40份、硫酸钾20-30份、乙二胺四亚甲基膦酸盐15-28份、六偏磷酸钠9-18份、三乙醇胺8-16份、乙二醇单丁醚14-22份、氨基三亚甲基膦酸16-28份、工业石脑油10-22份、水40-60份。 As a preferred version of the present invention, it is prepared according to the following ratio of raw materials by weight: 40-55 parts of sodium carbonate, 30-40 parts of silica, 20-30 parts of potassium sulfate, ethylenediamine tetramethylene phosphonate 15-28 parts, 9-18 parts of sodium hexametaphosphate, 8-16 parts of triethanolamine, 14-22 parts of ethylene glycol monobutyl ether, 16-28 parts of amino trimethylene phosphonic acid, 10-22 parts of industrial naphtha 40-60 parts of water.
一种油田井下防垢剂的制备方法，包括以下步骤： A preparation method of an oil field downhole antiscaling agent, comprising the following steps:
（1）称取碳酸钠、硅石、硫酸钾、乙二胺四亚甲基膦酸盐、六偏磷酸钠和水置于反应釜中，在64-94℃密封条件下搅拌32-68分钟； (1) Weigh sodium carbonate, silica, potassium sulfate, ethylenediaminetetramethylene phosphonate, sodium hexametaphosphate and water into a reaction kettle, and stir for 32-68 minutes under sealed conditions at 64-94°C;
（2）将三乙醇胺、乙二醇单丁醚、氨基三亚甲基膦酸和工业石脑油置于容器中，磁力搅拌混合均匀，反应温度为44-68℃； (2) Put triethanolamine, ethylene glycol monobutyl ether, aminotrimethylene phosphonic acid and industrial naphtha in a container, stir and mix evenly with a magnetic force, and the reaction temperature is 44-68°C;
（3）将步骤（2）获得的溶液放入高位槽中，反应釜升温44-76℃，开始滴加高位槽中的溶液，3.2-5.6小时滴完，滴加时温度控制在72-178℃，滴加结束后106-121℃保温1.6-2.7小时，自然降温出料后即可获得防垢剂。 (3) Put the solution obtained in step (2) into the high-level tank, the temperature of the reaction kettle is raised to 44-76°C, and the solution in the high-level tank is started to be added dropwise. After 3.2-5.6 hours, the temperature is controlled at 72-178°C. ℃, after the dropwise addition, keep warm at 106-121℃ for 1.6-2.7 hours, and then the anti-scaling agent can be obtained after natural cooling and discharging.
作为本发明的一种优选技术方案，步骤（1）中称取碳酸钠、硅石、硫酸钾、乙二胺四亚甲基膦酸盐、六偏磷酸钠和水置于反应釜中，在86℃密封条件下搅拌66分钟。 As a preferred technical solution of the present invention, in step (1), sodium carbonate, silica, potassium sulfate, ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate and water are weighed and placed in the reaction kettle. ℃ under sealed conditions and stirred for 66 minutes.
作为本发明的一种优选技术方案，步骤（2）中将三乙醇胺、乙二醇单丁醚、氨基三亚甲基膦酸和工业石脑油置于容器中，磁力搅拌混合均匀，反应温度为64℃。 As a preferred technical solution of the present invention, in step (2), triethanolamine, ethylene glycol monobutyl ether, aminotrimethylene phosphonic acid and industrial naphtha are placed in a container, magnetically stirred and mixed evenly, and the reaction temperature is 64°C.
作为本发明的一种优选技术方案，步骤（3）中将步骤（2）获得的溶液放入高位槽中，反应釜升温72℃，开始滴加高位槽中的溶液，5.4小时滴完，滴加时温度控制在154℃，滴加结束后118℃保温2.3小时，自然降温出料后即可获得防垢剂。 As a preferred technical solution of the present invention, in step (3), put the solution obtained in step (2) into the high-level tank, the temperature of the reaction kettle is raised to 72°C, and the solution in the high-level tank is started to be added dropwise, and the dripping is completed after 5.4 hours. The temperature during the addition is controlled at 154°C. After the dropwise addition, the temperature is kept at 118°C for 2.3 hours, and the anti-scaling agent can be obtained after natural cooling and discharging.
有益效果Beneficial effect
本发明所述的一种油田井下防垢剂及其制备方法采用以上技术方案具有以下技术效果：第一、阻垢率明显提高；第二、本发明所述的防垢剂使用方便、安全、持久。 A kind of downhole antiscaling agent for oil field of the present invention and its preparation method have the following technical effects by adopting the above technical scheme: first, the scale inhibition rate is obviously improved; second, the antiscaling agent of the present invention is easy to use, safe and lasting.
具体实施方式 detailed description
实施例1： Example 1:
一种油田井下防垢剂，按以下原料重量份数配比制成：碳酸钠35份、硅石25份、硫酸钾15份、乙二胺四亚甲基膦酸盐12份、六偏磷酸钠8份、三乙醇胺6份、乙二醇单丁醚12份、氨基三亚甲基膦酸15份、工业石脑油8份、水35份。 An oil field downhole antiscaling agent, which is prepared according to the following raw material ratios by weight: 35 parts of sodium carbonate, 25 parts of silica, 15 parts of potassium sulfate, 12 parts of ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate 8 parts, 6 parts of triethanolamine, 12 parts of ethylene glycol monobutyl ether, 15 parts of amino trimethylene phosphonic acid, 8 parts of industrial naphtha, 35 parts of water.
一种油田井下防垢剂的制备方法，包括以下步骤： A preparation method of an oil field downhole antiscaling agent, comprising the following steps:
（1）称取碳酸钠、硅石、硫酸钾、乙二胺四亚甲基膦酸盐、六偏磷酸钠和水置于反应釜中，在64℃密封条件下搅拌32分钟； (1) Weigh sodium carbonate, silica, potassium sulfate, ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate and water into a reaction kettle, and stir at 64°C for 32 minutes under sealed conditions;
（2）将三乙醇胺、乙二醇单丁醚、氨基三亚甲基膦酸和工业石脑油置于容器中，磁力搅拌混合均匀，反应温度为44℃； (2) Put triethanolamine, ethylene glycol monobutyl ether, aminotrimethylene phosphonic acid and industrial naphtha in a container, stir and mix evenly by magnetic force, and the reaction temperature is 44°C;
（3）将步骤（2）获得的溶液放入高位槽中，反应釜升温44℃，开始滴加高位槽中的溶液，3.2小时滴完，滴加时温度控制在72℃，滴加结束后106℃保温1.6小时，自然降温出料后即可获得防垢剂。 (3) Put the solution obtained in step (2) into the high-level tank, raise the temperature of the reaction kettle to 44°C, start adding the solution in the high-level tank dropwise, and finish dropping in 3.2 hours. The temperature is controlled at 72°C during the dropwise addition. Keep warm at 106°C for 1.6 hours, and the anti-scaling agent can be obtained after natural cooling and discharging.
该方案制得的油田井下防垢剂的阻垢率为95.7%。 The anti-scaling rate of downhole anti-scaling agent for oil field prepared by this scheme is 95.7%.
实施例2： Example 2:
一种油田井下防垢剂，按以下原料重量份数配比制成：碳酸钠40份、硅石30份、硫酸钾20份、乙二胺四亚甲基膦酸盐15份、六偏磷酸钠10份、三乙醇胺8份、乙二醇单丁醚15份、氨基三亚甲基膦酸18份、工业石脑油10份、水40份。 An oil field downhole antiscaling agent, prepared according to the following raw material ratios by weight: 40 parts of sodium carbonate, 30 parts of silica, 20 parts of potassium sulfate, 15 parts of ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate 10 parts, 8 parts of triethanolamine, 15 parts of ethylene glycol monobutyl ether, 18 parts of amino trimethylene phosphonic acid, 10 parts of industrial naphtha, 40 parts of water.
一种油田井下防垢剂的制备方法，包括以下步骤： A preparation method of an oil field downhole antiscaling agent, comprising the following steps:
（1）称取碳酸钠、硅石、硫酸钾、乙二胺四亚甲基膦酸盐、六偏磷酸钠和水置于反应釜中，在68℃密封条件下搅拌36分钟； (1) Weigh sodium carbonate, silica, potassium sulfate, ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate and water into a reaction kettle, and stir at 68°C for 36 minutes under sealed conditions;
（2）将三乙醇胺、乙二醇单丁醚、氨基三亚甲基膦酸和工业石脑油置于容器中，磁力搅拌混合均匀，反应温度为48℃； (2) Put triethanolamine, ethylene glycol monobutyl ether, aminotrimethylene phosphonic acid and industrial naphtha in a container, stir and mix evenly by magnetic force, and the reaction temperature is 48°C;
（3）将步骤（2）获得的溶液放入高位槽中，反应釜升温49℃，开始滴加高位槽中的溶液，3.8小时滴完，滴加时温度控制在91℃，滴加结束后113℃保温1.9小时，自然降温出料后即可获得防垢剂。 (3) Put the solution obtained in step (2) into the high-level tank, the temperature of the reaction kettle was raised to 49°C, and the solution in the high-level tank was started dropwise, and the drop was completed in 3.8 hours. The temperature was controlled at 91°C during the dropwise addition. Keep warm at 113°C for 1.9 hours, and the anti-scaling agent can be obtained after natural cooling and discharging.
该方案制得的油田井下防垢剂的阻垢率为97.3%。 The anti-scaling rate of downhole anti-scaling agent for oil field prepared by this scheme is 97.3%.
实施例3： Example 3:
一种油田井下防垢剂，按以下原料重量份数配比制成：碳酸钠45份、硅石35份、硫酸钾25份、乙二胺四亚甲基膦酸盐20份、六偏磷酸钠13份、三乙醇胺10份、乙二醇单丁醚18份、氨基三亚甲基膦酸21份、工业石脑油13份、水45份。 An oil field downhole antiscaling agent, which is prepared according to the following ratio of raw materials by weight: 45 parts of sodium carbonate, 35 parts of silica, 25 parts of potassium sulfate, 20 parts of ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate 13 parts, 10 parts of triethanolamine, 18 parts of ethylene glycol monobutyl ether, 21 parts of amino trimethylene phosphonic acid, 13 parts of industrial naphtha, 45 parts of water.
一种油田井下防垢剂的制备方法，包括以下步骤： A preparation method of an oil field downhole antiscaling agent, comprising the following steps:
（1）称取碳酸钠、硅石、硫酸钾、乙二胺四亚甲基膦酸盐、六偏磷酸钠和水置于反应釜中，在73℃密封条件下搅拌41分钟； (1) Weigh sodium carbonate, silica, potassium sulfate, ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate and water into a reaction kettle, and stir for 41 minutes under sealed conditions at 73°C;
（2）将三乙醇胺、乙二醇单丁醚、氨基三亚甲基膦酸和工业石脑油置于容器中，磁力搅拌混合均匀，反应温度为52℃； (2) Put triethanolamine, ethylene glycol monobutyl ether, aminotrimethylene phosphonic acid and industrial naphtha in a container, stir and mix evenly with a magnetic force, and the reaction temperature is 52°C;
（3）将步骤（2）获得的溶液放入高位槽中，反应釜升温53℃，开始滴加高位槽中的溶液，4.2小时滴完，滴加时温度控制在97℃，滴加结束后116℃保温2.1小时，自然降温出料后即可获得防垢剂。 (3) Put the solution obtained in step (2) into the high-level tank, the temperature of the reaction kettle is raised to 53°C, and the solution in the high-level tank is started to be added dropwise. After 4.2 hours, the temperature is controlled at 97°C during the dropwise addition. Insulate at 116°C for 2.1 hours, and the anti-scaling agent can be obtained after natural cooling and discharging.
该方案制得的油田井下防垢剂的阻垢率为98.2%。 The anti-scaling rate of downhole anti-scaling agent for oil field prepared by this scheme is 98.2%.
实施例4： Example 4:
一种油田井下防垢剂，按以下原料重量份数配比制成：碳酸钠50份、硅石40份、硫酸钾30份、乙二胺四亚甲基膦酸盐25份、六偏磷酸钠16份、三乙醇胺14份、乙二醇单丁醚21份、氨基三亚甲基膦酸25份、工业石脑油18份、水50份。 An oilfield downhole antiscaling agent, prepared according to the following raw material ratios by weight: 50 parts of sodium carbonate, 40 parts of silica, 30 parts of potassium sulfate, 25 parts of ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate 16 parts, 14 parts of triethanolamine, 21 parts of ethylene glycol monobutyl ether, 25 parts of amino trimethylene phosphonic acid, 18 parts of industrial naphtha, and 50 parts of water.
一种油田井下防垢剂的制备方法，包括以下步骤： A preparation method of an oil field downhole antiscaling agent, comprising the following steps:
（1）称取碳酸钠、硅石、硫酸钾、乙二胺四亚甲基膦酸盐、六偏磷酸钠和水置于反应釜中，在81℃密封条件下搅拌50分钟； (1) Weigh sodium carbonate, silica, potassium sulfate, ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate and water into a reaction kettle, and stir for 50 minutes under sealed conditions at 81°C;
（2）将三乙醇胺、乙二醇单丁醚、氨基三亚甲基膦酸和工业石脑油置于容器中，磁力搅拌混合均匀，反应温度为57℃； (2) Put triethanolamine, ethylene glycol monobutyl ether, aminotrimethylene phosphonic acid and industrial naphtha in a container, stir and mix evenly by magnetic force, and the reaction temperature is 57°C;
（3）将步骤（2）获得的溶液放入高位槽中，反应釜升温64℃，开始滴加高位槽中的溶液，4.8小时滴完，滴加时温度控制在136℃，滴加结束后118℃保温2.3小时，自然降温出料后即可获得防垢剂。 (3) Put the solution obtained in step (2) into the high-level tank, raise the temperature of the reaction kettle to 64°C, start adding the solution in the high-level tank dropwise, and finish dropping in 4.8 hours. Insulate at 118°C for 2.3 hours, and the anti-scaling agent can be obtained after natural cooling and discharging.
该方案制得的油田井下防垢剂的阻垢率为98.6%。 The anti-scaling rate of downhole anti-scaling agent for oil field prepared by this scheme is 98.6%.
实施例5： Example 5:
一种油田井下防垢剂，按以下原料重量份数配比制成：碳酸钠60份、硅石45份、硫酸钾35份、乙二胺四亚甲基膦酸盐30份、六偏磷酸钠20份、三乙醇胺18份、乙二醇单丁醚25份、氨基三亚甲基膦酸30份、工业石脑油25份、水65份。 An oil field downhole antiscaling agent, which is prepared according to the following raw material proportions by weight: 60 parts of sodium carbonate, 45 parts of silica, 35 parts of potassium sulfate, 30 parts of ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate 20 parts, 18 parts of triethanolamine, 25 parts of ethylene glycol monobutyl ether, 30 parts of amino trimethylene phosphonic acid, 25 parts of industrial naphtha, 65 parts of water.
一种油田井下防垢剂的制备方法，包括以下步骤： A preparation method of an oil field downhole antiscaling agent, comprising the following steps:
（1）称取碳酸钠、硅石、硫酸钾、乙二胺四亚甲基膦酸盐、六偏磷酸钠和水置于反应釜中，在94℃密封条件下搅拌68分钟； (1) Weigh sodium carbonate, silica, potassium sulfate, ethylenediamine tetramethylene phosphonate, sodium hexametaphosphate and water into a reaction kettle, and stir for 68 minutes under sealed conditions at 94°C;
（2）将三乙醇胺、乙二醇单丁醚、氨基三亚甲基膦酸和工业石脑油置于容器中，磁力搅拌混合均匀，反应温度为68℃； (2) Put triethanolamine, ethylene glycol monobutyl ether, aminotrimethylene phosphonic acid and industrial naphtha in a container, stir and mix evenly by magnetic force, and the reaction temperature is 68°C;
（3）将步骤（2）获得的溶液放入高位槽中，反应釜升温76℃，开始滴加高位槽中的溶液，5.6小时滴完，滴加时温度控制在178℃，滴加结束后121℃保温2.7小时，自然降温出料后即可获得防垢剂。 (3) Put the solution obtained in step (2) into the high-level tank, the temperature of the reaction kettle was raised to 76°C, and the solution in the high-level tank was started dropwise, and the drop was completed in 5.6 hours. The temperature was controlled at 178°C during the dropwise addition. Insulate at 121°C for 2.7 hours, and the anti-scaling agent can be obtained after natural cooling and discharging.
该方案制得的油田井下防垢剂的阻垢率为99.7%。 The anti-scaling rate of downhole anti-scaling agent for oil field prepared by this scheme is 99.7%.
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| US4144185A (en) * | 1978-02-24 | 1979-03-13 | The United States Of America As Represented By The Secretary Of The Interior | Method and composition for removing calcium sulfate scale deposits from surfaces |
| CN1546401A (en) * | 2003-12-10 | 2004-11-17 | 长春洁意实业有限责任公司 | Oilfield downhole solid anti-scaling agent and its production technology |
| CN101607767A (en) * | 2009-06-09 | 2009-12-23 | 新疆德蓝股份有限公司 | A kind of preparation that is used for the neutral composite scale inhibitor of oil field reinjection water |
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| US4144185A (en) * | 1978-02-24 | 1979-03-13 | The United States Of America As Represented By The Secretary Of The Interior | Method and composition for removing calcium sulfate scale deposits from surfaces |
| CN1546401A (en) * | 2003-12-10 | 2004-11-17 | 长春洁意实业有限责任公司 | Oilfield downhole solid anti-scaling agent and its production technology |
| CN101607767A (en) * | 2009-06-09 | 2009-12-23 | 新疆德蓝股份有限公司 | A kind of preparation that is used for the neutral composite scale inhibitor of oil field reinjection water |
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