CN1314602C - Antiscaling block and its production method - Google Patents
Antiscaling block and its production method Download PDFInfo
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- CN1314602C CN1314602C CNB2004100827449A CN200410082744A CN1314602C CN 1314602 C CN1314602 C CN 1314602C CN B2004100827449 A CNB2004100827449 A CN B2004100827449A CN 200410082744 A CN200410082744 A CN 200410082744A CN 1314602 C CN1314602 C CN 1314602C
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Abstract
The present invention relates to a slow-release antiscaling block medicine which is suitable for the production, the collection and the delivery of oily sewage media in oil wells on oil-gas fields and is used in water injection systems for preventing facility from forming scale. The slow-release antiscaling block medicine mainly comprises organic phosphate and a framework. In addition, a certain amount of copolymer, bactericidal agent and inorganic phosphonate can be added as requirement. A block-shaped slow release dissolving type antiscaling block product can be formed by the method that the materials are uniformly mixed at normal temperature, and then, molten materials are extruded by an extruder and filled into a mould for high pressure forming. Organic compounds (antiscaling components) slowly released from the antiscaling block in a medium can react with hardness ions in the medium to generate complex compounds and chelating substances, and the complex compounds and the chelating substances stably exist in water and flow along with the medium without depositing on facility surfaces to form scale. Thus, the slow-release antiscaling block medicine shows perfect antiscaling effect and protective effect.
Description
Technical field
The present invention relates to the petrochemical technology field, in specifically a kind of inhibited oil gas-field exploitation, the defeated process of collection because of fouling in the variation of working condition and the waterflood system to adopt, collect, the antiscaling block of the high-efficiency sustained-release type medicament of notes equipment influence.
Background technology
In recent years, the fast development of petroleum industry, at least will beat several thousand mouthfuls of oil wells every year, the promotion and implementation of water flood recovery technology simultaneously, add the rising of well recovery middle and later periods water ratio in advance, major issue be exactly on pump, pipe and the bar in the oil well usually knot a large amount of dirty things (its composition mainly is lime carbonate, calcium sulfate and Calucium Silicate powder dirt) are arranged, their existence makes oil well holddown, disconnected bar accident frequently take place, on repair frequency and increase, bring to safety in production to seriously influence, also cause serious economy loss simultaneously.Filling mostly was the liquid Scale inhibitors in the past, it has, and dissolution rate is fast, the dosing cycle short (being generally continuous dosing or filling in 5～7 days once), the spot effect instability, need the more man power and material side of support to be moved simultaneously, thereby increased the produce oil cost relatively.
Summary of the invention
The purpose of this invention is to provide in a kind of inhibited oil gas-field exploitation, collection, the defeated process antiscaling block and production method thereof because of the slow release type medicament of fouling in the variation of working condition and the waterflood system.
The object of the present invention is achieved like this: it is made up of following solid constituent and ratio of weight and number: 50～97 parts of organophosphates, 3～50 parts on skeleton;
Above-mentioned organophosphate is meant amino trimethylene phosphonic salt, hydroxy ethylene diphosphonic acid salt, sodium ethylenediamine tetramethylenephosphonate salt, two-1,2-ethylidene triamine pentamethylene phosphonate, the mixing of one or more in three-ethylene tetramine hexa-methylene phosphonate; Skeleton is a high-pressure polyethylene, low pressure polyethylene, EVA resin, the mixing of one or more in the acrylic resin.
When output water and when injecting water and containing sulphate reducing bacteria, heterotrophic bacteria and iron bacteria, also need add the sterilant of 1～20 weight part; This sterilant is meant dodecyl benzyl dimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, tetradecyl dimethyl benzyl ammonium chloride, the mixing of one or more in the dioxide peroxide.
When output water and inject water because the corrodibility that chlorion, dissolved oxygen and salinity cause when very strong, can also add the inorganic phosphate of 1～35 weight part; This inorganic phosphate is meant Sodium hexametaphosphate 99 or/and tripoly phosphate sodium STPP.
When output water and inject water and contain more silicon compound, during as silicon-dioxide etc., can also add the multiple copolymer of 1～20 weight part; This multiple copolymer is meant acrylic acid and acrylic ester copolymers, phosphonate group polymers of carboxylic acid, the mixing of one or more in vinylformic acid-sulfonic acid copolymer.
Antiscaling block of the present invention mainly is by organophosphate, and skeleton is formed, and secondly is to add a certain amount of multiple copolymer as required again, sterilant, and inorganic phosphate.The present invention is after above-mentioned each material is stirred at normal temperatures, extrudes through forcing machine, and the skeleton material is molten state, behind the mould of packing into, is the antiscaling block product of block slow lysotype in the pressure forming of 5～50MPa.
The present invention is cylindric solid, and general requirements is Φ 60 * 80, Φ 80 * 80, has no irritating odor, and slowly is dissolved in oil field output water, seawater, the acid flash-point height (greater than 100 ℃).Density (20 ℃) is 1.70 one 1.90g/cm
3, effective content is＞70%, every stripping concentration is＞0.1mg/ (every premium on currency sky) that temperature tolerance is good, reaches as high as more than 120 ℃.Add the present invention of 10mg/L, its scale inhibition efficient reaches (in different output water, its scale inhibition effect difference is bigger, and the scale inhibition efficient that has is up to more than 95%) more than 70%.This product also has certain anticorrosion and wax control effect simultaneously.
Antiscale mechanism of the present invention is: the negatively charged ion after dissociating in output water adds the macromolecular substance that complexing action produces stable water miscible ring texture with the positively charged ion that becomes dirt by reaction, being present in the output water medium of the cationic stabilized that one-tenth is dirty, and come ground with output water.Be the coefficient result of complexing solublization and lattice distortion.
The complexing solublization is because scale inhibition composition and calcium, magnesium ion in the antiscaling block can generate very stable complex compound, thereby has reduced the concentration that becomes dirty calcium ions and magnesium ions in the water, and sedimentary possibilities such as separating out lime carbonate in the water has been reduced.It can not only form stable complex compound with the calcium ions and magnesium ions in the aqueous solution, simultaneously can also with the calcium ion effect in the calcium carbonate crystal that has formed, this lime carbonate small-crystalline of doing the time spent with other lime carbonate microcrystal collision processes in be difficult to arrange by the lattice arrangement order of strictness, so be difficult for generating the macrocrystal of lime carbonate.Because calcium carbonate crystal can only remain in the small-particle scope, therefore the solubility property of calcium carbonate crystal in water and the effect of crystal grain solubility property have just correspondingly been improved, just to a certain amount of water, more lime carbonate is stabilized in the water and does not separate out.
Why the present invention can play restraining effect to dirt layers such as lime carbonate, mainly is that they play interference effect to the lattice growth that dirt becomes.Because lime carbonate is salt, it has ionic lattice, have only when the carbanion position of the positively charged calcium ion of calcium carbonate crystal part and another calcium carbonate crystal band portion negative charge runs foul of each other, just can be bonded to each other, thus calcium carbonate scale be a kind of by certain direction, have the hard scale that strict order is arranged.When being added with antiscaling block in the aqueous solution, because scale inhibitor can make the crystalline structure of calcium carbonate scale that very big distortion takes place to the interference of the complexing (chelating) of calcium ion effect and no longer continue to increase by normal rule, the crystalline lattice has been distorted in other words, produced some bigger amorphous particles, be soft dirt thereby lime carbonate hard scale or utmost point hard scale are become.This soft dirt is easily by current washout and dispersion, thus this kind dirt just no longer increased after rising to certain thickness, thereby reached the purpose of scale inhibition.
The present invention be last repair operation in, the antiscaling block working barrel is connected the bottom of screen casing under the oil well pump, and both is kept apart with dividing plate.With finishing of workover treatment, antiscaling block is also together down to the down-hole.Antiscaling block is immersed in the output liquid, and begins to slowly release the scale inhibition composition, and with the stable complex compound of hardness ions reaction generation in the water, its dissolving cycle is about 300 days.It has save time, laborsaving, cut down expenses, human factor is very little, effect stability.It is the regeneration product of liquid scale inhibition product.
The present invention can mix use with anticorrosion, anti-wax stone, plays the multiple effect of protection against corrosion, good antiscale property and anti-wax deposition in a bite well simultaneously.
To be described in further detail invention by example below, but following example only is the present invention's example wherein, the rights protection scope of not representing the present invention and being limited, the scope of the present invention is as the criterion with claims.
Embodiment
Embodiment 1
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 72 weight parts respectively, acrylic acid and acrylic ester copolymers 5 weight parts, dodecyl benzyl dimethyl ammonium chloride 5 weight parts, high-pressure polyethylene 10 weight parts, EVA resin 7 weight parts, Sodium hexametaphosphate 99 1 weight part; After above-mentioned each material stirred at normal temperatures, extrude through forcing machine, the skeleton material is molten state, behind the mould of packing into, is the block slowly antiscaling block finished product of lysotype in the pressure forming of 5～50MPa.Use for the ease of down-hole, then generally can be pressed into the cylindric solid that specification is Φ 60 * 80, Φ 80 * 80 at oil well.This product is applicable in 40～70 ℃ of oil wells under the condition and uses that the well workover cycle stretch-out that can make oil well is more than 2 times.
Embodiment 2
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 80 weight parts, phosphonate group polymers of carboxylic acid 1 weight part, dodecyl dimethyl benzyl ammonium bromide 3 weight parts, low pressure polyethylene 15 weight parts, tripoly phosphate sodium STPP 1 weight part; Production method is identical with embodiment 1.This product is applicable in 60～80 ℃ of oil wells under the condition and uses that the well workover cycle stretch-out that can make oil well is more than 2 times.
Embodiment 3
Get hydroxy ethylene diphosphonic acid (HEDP) salt 71 weight parts, vinylformic acid-sulfonic acid copolymer 6 weight parts, tetradecyl dimethyl benzyl ammonium chloride 4 weight parts, EVA resin 19 weight parts; Production method is identical with embodiment 1.
Embodiment 4
Get sodium ethylenediamine tetramethylenephosphonate salt (EDTMP, EDTMPS) 67 weight parts, vinylformic acid-sulfonic acid copolymer 6 weight parts, dioxide peroxide 4 weight parts, high-pressure polyethylene 12 weight parts, EVA resin 1 weight part, acrylic resin 9 weight parts, Sodium hexametaphosphate 99 1 weight part; Production method is identical with embodiment 1.
Embodiment 5
Get two-ethylene triamine pentamethylene phosphonic acids (DETPMP) salt, 76 weight parts, phosphonate group polymers of carboxylic acid 4 weight parts, vinylformic acid-sulfonic acid copolymer 1 weight part, high-pressure polyethylene 14 weight parts, EVA resin 4.5 weight parts, acrylic resin 0.5 weight part; Production method is identical with embodiment 1.
Embodiment 6
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 52 weight parts, hydroxy ethylene diphosphonic acid (HEDP) salt 8 weight parts, acrylic acid and acrylic ester copolymers 18.2 weight parts, dodecyl benzyl dimethyl ammonium chloride 1 weight part, low pressure polyethylene 16 weight parts, EVA resin 1 weight part, acrylic resin 3.8 weight parts; Production method is identical with embodiment 1.This product is applicable in 60～70 ℃ of oil wells under the condition and uses that the well workover cycle stretch-out that can make oil well is more than 2 times.
Embodiment 7
Get three-ethylene tetramine hexa-methylene phosphonic acids (TETHMP) salt, 80 weight parts, phosphonate group polymers of carboxylic acid 0.1 weight part, EVA resin 19.9 weight parts; Production method is identical with embodiment 1.
Embodiment 8
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 73 weight parts, ethylenediamine tetramethylene phosphonic acid and sodium salt (EDTMP, EDTMPS) 6 weight parts, vinylformic acid-sulfonic acid copolymer 0.1 weight part, dodecyl dimethyl benzyl ammonium bromide 4 weight parts, each 10 weight part of high pressure (low pressure) polyethylene, EVA resin 6.9 weight parts; Production method is identical with embodiment 1.This product is applicable in 60～75 ℃ of oil wells under the condition and uses that the well workover cycle stretch-out that can make oil well is more than 2 times.
Embodiment 9
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 55 weight parts, two-1,2-ethylidene triamine pentamethylene phosphonic acids (DETPMP) salt 5 weight parts, three-ethylene tetramine hexa-methylene phosphonic acids (TETHMP) salt, 10 weight parts, acrylic acid and acrylic ester copolymers 13 weight parts, vinylformic acid-sulfonic acid copolymer 1 weight part, dioxide peroxide 2 weight parts, low pressure polyethylene 10 weight parts, EVA resin 1 weight part, acrylic resin 2 weight parts; Production method is identical with embodiment 1.This product is applicable in 70～90 ℃ of oil wells under the condition and uses that the well workover cycle stretch-out that can make oil well is more than 2～3 times.
Embodiment 10
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 61 weight parts, hydroxy ethylene diphosphonic acid (HEDP) salt 16 weight parts, sodium ethylenediamine tetramethylenephosphonate salt (EDTMP, EDTMPS) 3 weight parts, phosphonate group polymers of carboxylic acid 1 weight part, dodecyl benzyl dimethyl ammonium chloride 2 weight parts, high-pressure polyethylene 15 weight parts, EVA resin 5 weight parts; Production method is identical with embodiment 1.
Embodiment 11
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 48 weight parts, hydroxy ethylene diphosphonic acid (HEDP) salt 21 weight parts, sodium ethylenediamine tetramethylenephosphonate salt (EDTMP, EDTMPS) 6 weight parts, phosphonate group polymers of carboxylic acid 3 weight parts, vinylformic acid-sulfonic acid copolymer 2 weight parts, high-pressure polyethylene 9 weight parts, EVA resin 5 weight parts, acrylic resin 1 weight part, Sodium hexametaphosphate 99 5 weight parts; Production method is identical with embodiment 1.
Embodiment 12
Get hydroxy ethylene diphosphonic acid (HEDP) salt 75 weight parts, sodium ethylenediamine tetramethylenephosphonate salt (EDTMP, EDTMPS) 5 weight parts, acrylic acid and acrylic ester copolymers 0.4 weight part, dodecyl dimethyl benzyl ammonium bromide 1 weight part, tetradecyl dimethyl benzyl ammonium chloride 1 weight part, each 8 weight part of high pressure (low pressure) polyethylene, EVA resin 4 weight parts, acrylic resin 1 weight part, tripoly phosphate sodium STPP 4.6 weight parts; Production method is identical with embodiment 1.
Embodiment 13
Get hydroxy ethylene diphosphonic acid (HEDP) salt 56 weight parts, sodium ethylenediamine tetramethylenephosphonate salt (EDTMP, EDTMPS) 10 weight parts, two-1,2-ethylidene triamine pentamethylene phosphonic acids (DETPMP) and salt 8 weight parts, vinylformic acid-sulfonic acid copolymer 2 weight parts, low pressure polyethylene 4 weight parts, EVA resin 16 weight parts, Sodium hexametaphosphate 99 2 weight parts, tripoly phosphate sodium STPP 2 weight parts; Production method is identical with embodiment 1.
Embodiment 14
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 49 weight parts, hydroxy ethylene diphosphonic acid (HEDP) salt 12, sodium ethylenediamine tetramethylenephosphonate salt (EDTMP, EDTMPS) 10 weight parts, two-ethylene triamine pentamethylene phosphonic acids (DETPMP) salt, 4 weight parts, phosphonate group polymers of carboxylic acid 1 weight part, vinylformic acid-sulfonic acid copolymer 3 weight parts, dodecyl dimethyl benzyl ammonium bromide 5 weight parts, high-pressure polyethylene 13 weight parts, EVA resin 2 weight parts, acrylic resin 1 weight part; Production method is identical with embodiment 1.
Embodiment 15
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 39 weight parts, hydroxy ethylene diphosphonic acid (HEDP) salt 35 weight parts, three-1,2-ethylidene tetramine hexa-methylene phosphonic acids (TETHMP) salt 5.5 weight parts, vinylformic acid-sulfonic acid copolymer 0.5 weight part, low pressure polyethylene 11 weight parts, EVA resin 4 weight parts, acrylic resin 5 weight parts; Production method is identical with embodiment 1.
Embodiment 16
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 36 weight parts, hydroxy ethylene diphosphonic acid (HEDP) salt 10 weight parts, two-1,2-ethylidene triamine pentamethylene phosphonic acids (DETPMP) salt 5 weight parts, three-1,2-ethylidene tetramine hexa-methylene phosphonic acids (TETHMP) salt 3 weight parts, acrylic acid and acrylic ester copolymers 0.2 weight part, phosphonate group polymers of carboxylic acid 0.8 weight part, dodecyl benzyl dimethyl ammonium chloride 5 weight parts, dodecyl dimethyl benzyl ammonium bromide 4 weight parts, high-pressure polyethylene 11 weight parts, acrylic resin 5 weight parts, Sodium hexametaphosphate 99 20 weight parts; Production method is identical with embodiment 1.This product is applicable in 75～98 ℃ of oil wells under the condition and uses that the well workover cycle stretch-out that can make oil well is more than 2～3 times.
Embodiment 17
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 60 weight parts, each 30 weight part of high-pressure polyethylene, EVA resin 10 weight parts; After above-mentioned each material stirred at normal temperatures, extrude through forcing machine, the skeleton material is molten state, behind the mould of packing into, is the block slowly antiscaling block finished product of lysotype in the pressure forming of 20～50MPa.Use for the ease of down-hole, then generally can be pressed into the cylindric solid that specification is Φ 60 * 80, Φ 80 * 80 at oil well.
Embodiment 18
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 80 weight parts, high-pressure polyethylene 20 weight parts, production method is identical with embodiment 17.
Embodiment 19
Get the basic trimethylene phosphonic of ammonia (nitrogen) (ATMP) salt 70 weight parts, ethylenediamine tetramethylene phosphonic acid and sodium salt (EDTMP, EDTMPS) 10 weight parts, 30 parts of EVA resins; Production method is identical with embodiment 17.This product is applicable in 20～35 ℃ of oil wells under the condition and uses that the well workover cycle stretch-out that can make oil well is more than 2 times.
Test method: static-state scale inhibition test method
1, the preparation of 0.5% concentration antiscaling block liquid medicine:
Get the antiscaling block MY-5017 (effective content 80%) of (or using paper knife) a slice thickness＜1.5mm with the hacksaw saw, at accurate weighing 1.25 grams (precision reaches more than 0.001 gram) on the analytical balance, put into off-the-shelf clean and exsiccant 500ml port grinding bottle is standby; Accurately measuring distilled water 198.75ml joins in this port grinding bottle, rotor is put into the bottle of a cleaning, (mesopore of a diameter 8mm is made a call at the stopper center to cover rubbery stopper, insert the clean Glass tubing of long 400mm, a diameter 8mm on it, the stopper internal surface leans out 10mm and gets final product, the usefulness of backflow), put it in 85 ± 2 ℃ the water bath with thermostatic control, start magnetic stirrer solution, rotating speed is controlled at 150-350 rev/min, dissolves operation 12 hours.It is standby that taking-up is cooled to room temperature.
2, the mensuration of calcium in the solution:
Accurately measure and filter water sample 50ml in the 250ml Erlenmeyer flask, with distilled water diluting to 100ml; The calconcarboxylic acid that adds 5ml 20% sodium hydroxide solution and about 0.05 gram is constantly shaking down, is titrated to solution with the 0.01mol/L EDTA solution of standard and changes blueness into by burgundy, is terminal point.The volume number of the EDTA mark liquid that record consumes.Utilize following formula to calculate the concentration of calcium ion:
Calcium ion concn=(milliliter number * 20 of the EDTA of EDTA concentration * consumption)/sample volume number * 1000mg/L
3, scale inhibition performance calculates:
The scale inhibitor performance characterizes with antiscaling rate, and its percentage values is big more, and anti-scaling property is good more.Antiscaling rate E is calculated as follows: E=(M
2-M
1)/(M
0-M
1) * 100%
In the formula: M
2---with calcium ion concn in the mixing solutions of scale inhibitor test back;
M
1---with calcium ion concn in the mixing solutions of scale inhibitor test back;
M
0---calcium ion concn in the mixing solutions before the test.
Test conditions:
1, test water: preparation Simulated Water.
2, test conditions: the temperature of simulated formation temperature or standard-required (70 ℃), adding dose is 20--30mg/L, test period is 24 hours.
Test-results:
Shown in test-results sees table.
| Antiscaling block | Scale inhibition efficient (%) | |
| 20mg/L | 30mg/L | |
| Example 1 | 86.94 | 90.39 |
| Example 2 | 88.85 | 94.89 |
| Example 3 | 88.36 | 97.01 |
| Example 4 | 89.08 | 93.83 |
| Example 5 | 88.23 | 96.19 |
| Example 6 | 91.26 | 90.23 |
| Example 7 | 93.42 | 97.78 |
| Example 8 | 87.96 | 94.38 |
| Example 9 | 90.07 | 97.89 |
| Example 10 | 94.50 | 99.20 |
| Example 11 | 87.39 | 93.32 |
| Example 12 | 90.64 | 95.26 |
| Example 13 | 89.09 | 92.68 |
| Example 14 | 87.13 | 91.03 |
| Example 15 | 83.62 | 89.31 |
| Example 16 | 86.10 | 91.37 |
| Example 17 | 83.45 | 89.23 |
| Example 18 | 95.34 | 98.31 |
| Example 19 | 96.20 | 98.68 |
Claims (8)
1, a kind of slow-release anti-scale piece that prevents the facility fouling that is applicable to that oil-gas field oil well product, collection, defeated oily(waste)water medium and waterflood system are used, it is made up of following solid constituent and ratio of weight and number:
50～97 parts of organophosphates
3～50 parts on skeleton
Above-mentioned organophosphate is meant amino trimethylene phosphonic salt, hydroxy ethylene diphosphonic acid salt, sodium ethylenediamine tetramethylenephosphonate salt, two-1,2-ethylidene triamine pentamethylene phosphonate, the mixing of one or more in three-ethylene tetramine hexa-methylene phosphonate; Skeleton is a high-pressure polyethylene, low pressure polyethylene, EVA resin, the mixing of one or more in the acrylic resin.
2, antiscaling block according to claim 1 is characterized in that: the sterilant that can also add 1～20 weight part; This sterilant is meant dodecyl benzyl dimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, tetradecyl dimethyl benzyl ammonium chloride, the mixing of one or more in the dioxide peroxide.
3, antiscaling block according to claim 1 is characterized in that: the inorganic phosphate that can also add 1～35 weight part; This inorganic phosphate is meant Sodium hexametaphosphate 99 or/and tripoly phosphate sodium STPP.
4, antiscaling block according to claim 1 is characterized in that: the multiple copolymer that can also add 1～20 weight part; This multiple copolymer is meant acrylic acid and acrylic ester copolymers, phosphonate group polymers of carboxylic acid, the mixing of one or more in vinylformic acid-sulfonic acid copolymer.
5, a kind of production method that prevents the slow-release anti-scale piece of facility fouling, it is characterized in that the organophosphate of 50～97 weight parts is mixed with the skeleton of 3～50 weight parts, after stirring at normal temperatures, extrude through forcing machine, the skeleton material is molten state, pack into behind the mould, be the block slowly antiscaling block finished product of lysotype in the pressure forming of 5～50MPa;
Organophosphate is meant amino trimethylene phosphonic salt, hydroxy ethylene diphosphonic acid salt, sodium ethylenediamine tetramethylenephosphonate salt, two-1,2-ethylidene triamine pentamethylene phosphonate, the mixing of one or more in three-ethylene tetramine hexa-methylene phosphonate; Skeleton is a high-pressure polyethylene, low pressure polyethylene, EVA resin, the mixing of one or more in the acrylic resin.
6, according to the production method of the described antiscaling block of claim 5, it is characterized in that: the sterilant that can also add 1～20 weight part; This sterilant is meant dodecyl benzyl dimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, tetradecyl dimethyl benzyl ammonium chloride, the mixing of one or more in the dioxide peroxide.
7, according to the production method of the described antiscaling block of claim 5, it is characterized in that: the inorganic phosphate that can also add 1～35 weight part; This inorganic phosphate is meant Sodium hexametaphosphate 99 or/and tripoly phosphate sodium STPP.
8, according to the production method of the described antiscaling block of claim 5, it is characterized in that: the multiple copolymer that can also add 1～20 weight part; This multiple copolymer is meant acrylic acid and acrylic ester copolymers, phosphonate group polymers of carboxylic acid, the mixing of one or more in vinylformic acid-sulfonic acid copolymer.
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| CN101152968B (en) * | 2006-09-30 | 2012-05-23 | 余新军 | Directional slow-release dissolving water treatment agent and production method thereof |
| CN101172721B (en) * | 2006-10-31 | 2010-11-03 | 湖州欧美化学有限公司 | Antisludging agent of reverse osmosis water treatment system |
| CN101935106B (en) * | 2009-07-01 | 2012-07-11 | 新加坡美能材料科技有限公司 | Drinking water softener and softening method and equipment thereof |
| CN102061156A (en) * | 2010-11-22 | 2011-05-18 | 李英范 | Corrosion and scale preventing ball for oilfield production equipment and production method thereof |
| CN102619497B (en) * | 2012-04-11 | 2015-05-06 | 中国石油天然气股份有限公司 | Method for continuously reducing hydrogen sulfide in oil well shaft |
| CN104479658A (en) * | 2014-11-25 | 2015-04-01 | 苏州佑君环境科技有限公司 | Solid scale prevention and removal agent and preparation method thereof |
| CN105038750B (en) * | 2015-07-09 | 2018-04-03 | 陕西森瑞石油技术开发有限公司 | Sustained release scale preventative and preparation method thereof in a kind of wellfracturing seam |
| CN109231508B (en) * | 2018-10-20 | 2021-11-02 | 获嘉县宏达环保材料有限公司 | Sustained-release agent for industrial water |
| CN109336266A (en) * | 2018-11-27 | 2019-02-15 | 朱鹏宇 | A kind of coal mining water treatment agent and its processing method to coal mining water |
| CN116463011A (en) * | 2023-04-21 | 2023-07-21 | 南昌清育研科技产业有限公司 | DETPMP/modified porous carbon slow-release anti-scaling coating |
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| US5840658A (en) * | 1995-12-28 | 1998-11-24 | Petroleo Brasilerio S.A.- Petrobras | Process for the controlled fixing of scale inhibitor in a subterranean formation |
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