CN108913112B - Cleaning antiscale and preparation method thereof - Google Patents
Cleaning antiscale and preparation method thereof Download PDFInfo
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- CN108913112B CN108913112B CN201810912021.9A CN201810912021A CN108913112B CN 108913112 B CN108913112 B CN 108913112B CN 201810912021 A CN201810912021 A CN 201810912021A CN 108913112 B CN108913112 B CN 108913112B
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- C—CHEMISTRY; METALLURGY
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
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- C—CHEMISTRY; METALLURGY
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/528—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning inorganic depositions, e.g. sulfates or carbonates
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- C—CHEMISTRY; METALLURGY
- 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
- C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
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- C—CHEMISTRY; METALLURGY
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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- C—CHEMISTRY; METALLURGY
- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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Abstract
The present invention provides a kind of cleaning antiscales and preparation method thereof, are related to oilfield chemical auxiliary technical field.Cleaning antiscale includes the raw material components of following parts by weight: 22-37 parts of de-plugging agent, 3-5 parts of corrosion inhibiter and 25-35 parts of sustained release agent.The de-plugging agent corrosion inhibiter and sustained release agent that cleaning antiscale provided by the invention is matched with certain content is main raw material components, mutual coordinated between each component, it can be slowly dissolved in injection water, sustained release effective component, different type fouling blockage object can be released, inhibit secondary fouling, slow down tube corrosion, realizes that high pressure shorts the increasing injection of well.
Description
Technical field
The present invention relates to oilfield chemical auxiliary technical fields, more particularly, to a kind of cleaning antiscale and preparation method thereof.
Background technique
In the production of low-permeability oilfield sandstone oil reservoir, stratum natural energy attenuation is fast, and stratum energy supplement is mainly derived from water filling.
Oil field old development and production, as the waterflooding extraction time limit increases, water filling well pressure is risen year by year；Edge exploration and development new district physical property
It is gradually deteriorated, fractional water flooding well initial stage just shows high pressure.The difficult water injection in low permeability sandstone reservoir, water injection pressure height are general
Store-through the problem of.Since note is adopted particularly thorny, the yield of corresponding well group oil well and efficiently opening for whole block are directly affected
Hair.
Water injection well high pressure is shorted mainly by chemical scale, clay swell, bacterial corrosion and metabolite and rock wettability
The effect of the combined factors such as change causes, and high pressure shorts the clear antiscale of well often has acidification, pressure break and clear antiscale de-plugging etc. to arrange with measure
It applies.It is influenced worse and worse etc. since injection water quality incompatibility, fouling blockage object become increasingly complex with reservoir properties, causes to fill the water
Validity period is short after well measure, and measure number is frequent, has seriously affected water flooding.
The cleaning antiscale action period in the prior art is short, and clear antiscaling effect is bad.In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of cleaning antiscale, and to exist in the prior art the action period short to alleviate,
The technical problems such as clear antiscaling effect is bad.
Cleaning antiscale provided by the invention, the raw material components including following parts by weight: 22-37 parts of de-plugging agent, corrosion inhibiter
3-5 parts and sustained release agent 25-35 parts.
Further, the raw material components including following parts by weight: 22-34 parts of de-plugging agent, 3-5 parts of corrosion inhibiter and sustained release agent
25-34 parts.
Further, the de-plugging agent includes N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and water
Poplar acid；
Preferably, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic acid in the de-plugging agent
Weight ratio be (12-20): (7-12): (3-5), further preferably (15-20): (8-12): (3-5).
Further, the corrosion inhibiter includes N, N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate；
Preferably, the weight ratio of N in the corrosion inhibiter, N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate are (1-2):
(1-1.5): (1-1.5), further preferably (1-1.5): (1-1.5): (1-1.5).
Further, the sustained release agent includes polylactic acid and PEG 20000；
Preferably, polylactic acid and the weight ratio of PEG 20000 are (22-30): (3-5) in the sustained release agent, into one
Step is preferably (25-30): (3-5).
It further, further include the raw material components of following parts by weight: 10-15 parts and injection agent 10-15 parts of stabilizer；
Preferably, the stabilizer includes benzyltrimethylammonium chloride and choline chloride, benzyl front three in the stabilizer
The weight ratio of ammonium chloride and choline chloride is (5-8): (5-7), further preferably (6-8): (6-7)；
Preferably, the injection agent includes a- sodium olefin sulfonate and neopelex, a- alkene in the injection agent
The weight ratio of base sodium sulfonate and neopelex is (3-5): (7-10), further preferably (3-5): (7-9).
It further, further include the raw material components of following parts by weight: 1-2 parts and initiator 0.5-1 parts of reinforcing agent；
Preferably, the initiator includes oligomeric diols and isocyanates, oligomeric diols and different in the initiator
The weight ratio of cyanate is (0.3-0.7): (0.2-0.3), further preferably (0.5-0.7): (0.2-0.3)；
Preferably, the reinforcing agent includes olefin(e) acid and acylate, the weight of olefin(e) acid and acylate in the reinforcing agent
Than for (0.8-1.5): (0.2-0.5), further preferably (1-1.5): (0.3-0.5).
Further, the oligomeric diols include in tetraethylene-glycol, diglycol or triethylene-glycol
At least one, preferably tetraethylene-glycol；
And/or the isocyanates is diisocyanate；
And/or the olefin(e) acid includes at least one of hexenoic acid, acrylic acid or butenoic acid；
And/or the acylate includes at least one of sodium citrate, sodium gluconate and sodium phthalate.
It further, further include the raw material components of following parts by weight: 3-5 parts of coating agent；
Preferably, the coating agent is stearic acid.
The second object of the present invention is to provide a kind of preparation method of cleaning antiscale, the preparation method is easy to operate, at
This is low, energy consumption is small and pollution-free.
The preparation method of cleaning antiscale provided by the invention, includes the following steps:
(a) de-plugging agent, corrosion inhibiter, optional stabilizer and optional injection agent are mixed, adds optional coating agent
Coating；
(b) product that the step (a) obtains is mixed with sustained release agent and optional reinforcing agent, is added after heating optionally
Initiator mix to get cleaning antiscale；
Preferably, in the step (a), the incorporation time is 20-30min, and/or, after the coating agent is added, rise
Temperature is to 70-72 DEG C；
Preferably, in the step (b), the incorporation time is 10-15min, and/or, it is described to be warming up to 160-165
℃。
Compared with prior art, the invention has the following advantages:
De-plugging agent, corrosion inhibiter and the sustained release agent that cleaning antiscale provided by the invention is matched using certain content is primary raw material groups
Point, mutual coordinated between each component can be slowly dissolved in injection water, and sustained release effective component can release inhomogeneity
Type fouling blockage object, inhibits secondary fouling, slows down tube corrosion, realizes that high pressure shorts the increasing injection of well.
The preparation method of cleaning antiscale provided by the invention is easy to operate, at low cost, energy consumption is small and pollution-free.It is prepared
The effective component of cleaning antiscale be uniformly dispersed, easy to dissolve, had good sustained release effect has snaking, antiscale, inhibition, anti-clayswelling
Swollen and low interfacial tension characteristic, to realize that high pressure shorts the increasing injection of well, efficiently delay and inhibit stake initial stage well
Unlifting pressure trend.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is sustained release performance test of the cleaning antiscale provided by the embodiment of the present invention seven in injection water；
Fig. 2 is scale removal performance test of the cleaning antiscale to different tampers provided by the embodiment of the present invention seven；
Fig. 3 is that cleaning antiscale provided by the embodiment of the present invention seven tests the scale-inhibiting properties of different divalent metal dirts；
Fig. 4 is interfacial tension performance test of the cleaning antiscale provided by the embodiment of the present invention seven in injection water.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The person that is not specified actual conditions in embodiment, carries out according to conventional conditions or manufacturer's recommended conditions.Agents useful for same or instrument are not
Production firm person is indicated, is the conventional products that can be obtained by commercially available purchase.
According to the first aspect of the invention, the present invention provides a kind of cleaning antiscale, the original including following parts by weight
Expect component: 22-37 parts of de-plugging agent, 3-5 parts of corrosion inhibiter and 25-35 parts of sustained release agent.
De-plugging agent has faintly acid, can reduce solution ph, improves rock surface Zate current potential, the synchronous water that increases is in rock
Surface contact angle has certain removal ability to carbonate scale and sulfate scale.
Corrosion inhibiter can slow down cleaning antiscale to tube corrosion, reduce the corrosion rate of injection water, reduce iron dirt and generate.
Sustained release agent has itself slow degradation characteristic, reservoir is not injured after degradation, water solubility rate is slow, and cleaning antiscale is delayed to have
Imitate the deenergized period of ingredient.
Wherein, de-plugging agent for example can be, but be not limited to 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, 34 parts, 36 parts
Or 37 parts；Corrosion inhibiter for example can be, but be not limited to 3 parts, 4 parts or 5 parts；Sustained release agent for example can be, but be not limited to 25 parts, 26
Part, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts or 35 parts.
De-plugging agent, corrosion inhibiter and the sustained release agent that cleaning antiscale provided by the invention is matched using certain content is primary raw material groups
Point, mutual coordinated between each component can be slowly dissolved in injection water, and sustained release effective component can release inhomogeneity
Type fouling blockage object, inhibits secondary fouling, slows down tube corrosion, realizes that high pressure shorts the increasing injection of well.
In one preferred embodiment, the raw material components including following parts by weight: 22-34 parts of de-plugging agent, inhibition
3-5 parts and sustained release agent 25-34 parts of agent.
Cleaning antiscale provided by the invention matches by adjusting the content of each raw material component, and the length of water injection well is acted on conducive to it
Characteristic is imitated, measure frequency, operating cost and later maintenance are reduced, gradually improves water injection well high pressure and shorts problem.
In one preferred embodiment, the de-plugging agent includes N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, divinyl
Pentaacetic acid and salicylic acid.
In a preferred embodiment of present embodiment, three second of N- beta-hydroxy ethylethylenediamine in the de-plugging agent
Acid, diethylene triamine pentacetic acid (DTPA) and salicylic weight ratio are (12-20): (7-12): (3-5), further preferably (15-
20): (8-12): (3-5).
De-plugging agent uses N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and the bigcatkin willow of special ratios
Acid has faintly acid, can reduce solution ph, improves rock surface Zate current potential, the synchronous water that increases in rock surface contact angle,
There is certain solvability to carbonate scale and sulfate scale.N- beta-hydroxy ethyl-3-acetic acid ethylenediamine and diethylenetriamine five
Acetic acid chelates to be formed to bivalent metal ion progress heterocycle in tamper dissolves in water chelating molecule, further releases tamper carbonic acid
Salt crust and sulfate scale, salicylic acid can be pi-conjugated with bivalent metal ion formation P-, slowly remove tamper.N- beta-hydroxy ethyl
Ethylenediamine triacetic acid and diethylene triamine pentacetic acid (DTPA) while removing tamper, by above-mentioned mechanism to water flooding divalent metal from
Son is chelated, and the secondary fouling of tamper is inhibited.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Ratio such as can be, but be not limited to 20:12:3,12:7:5,20:7:3,20:12:5 or 15:10:4.
In one preferred embodiment, the corrosion inhibiter includes N, N'- di-o-tolyl thiocarbamide, potassium iodide and molybdic acid
Potassium.
In a preferred embodiment of present embodiment, N in the corrosion inhibiter, N'- di-o-tolyl thiocarbamide, iodate
The weight ratio of potassium and potassium molybdate is (1-2): (1-1.5): (1-1.5), further preferably (1-1.5): (1-1.5): (1-
1.5)。
Corrosion inhibiter uses the N of special ratios, N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate, and is solid, with
Other raw material components have favorable compatibility and compatibility, conducive to tube corrosion is slowed down, reduce the corrosion rate of injection water, reduce
Iron dirt generates.
Wherein, the weight ratio of N in corrosion inhibiter, N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate such as can be, but
It is not limited to 1:1:1,2:1.5:1.5,1:1.5:1.5 or 2:1:1.
In one preferred embodiment, the sustained release agent includes polylactic acid and PEG 20000.
In a preferred embodiment of present embodiment, polylactic acid and PEG 20000 in the sustained release agent
Weight ratio is (22-30): (3-5), further preferably (25-30): (3-5).
Sustained release agent uses the polylactic acid and PEG 20000 of special ratios, and is all water soluble polymer material
Material has itself slow degradation characteristic, reservoir is not injured after degradation, delays cleaning antiscale effective component deenergized period.
Wherein, the weight ratio of polylactic acid and PEG 20000 such as can be in sustained release agent, but be not limited to 0.3:0.2,
0.3:0.3,0.7:0.2,0.7:0.3 or 0.5:0.3.
It in one preferred embodiment, further include the raw material components of following parts by weight: 10-15 parts of stabilizer and increasing
10-15 parts of injecting.
Stabilizer can reduce small bits of clay expansion and migration, make in the long process that small bits of clay expands and migrates
Clay mineral contract by force it is swollen, increase reservoir water stream channel aperture.
Injection agent can reduce solution interface tension performance, reduce injection water hollow billet resistance in rock duct.
Wherein, stabilizer for example can be, but be not limited to 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts；Injection agent example
It such as can be, but be not limited to 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or 15 parts.
It further include the stabilizer and injection agent that certain content matches, stabilizer and augmented injection in cleaning antiscale provided by the invention
Agent and the mutual coordinated of other components can be reduced small bits of clay expansion and migration, reduce injection water interfacial tension and hollow billet resistance
Power realizes that high pressure shorts the increasing injection of well.
In a preferred embodiment of present embodiment, the stabilizer includes benzyltrimethylammonium chloride and chlorination
Choline, the weight ratio of benzyltrimethylammonium chloride and choline chloride is (5-8): (5-7) in the stabilizer, further preferably
(6-8): (6-7).
Stabilizer use special ratios benzyltrimethylammonium chloride and choline chloride, small bits of clay expand and migrate
In long process, slow release benzyltrimethylammonium chloride and choline chloride ingredient, to illite in clay mineral and montmorillonite
Ingredient reduces small bits of clay expansion and migration, so that clay mineral is contracted by force swollen by strong adsorptivity and the lattice filling of ionic effect,
Increase the aperture of reservoir water stream channel.
Wherein, the weight ratio of benzyltrimethylammonium chloride and choline chloride such as can be in stabilizer, but be not limited to 5:
7,8:5,5:5,8:7 or 7:6.
In a preferred embodiment of present embodiment, the injection agent includes a- sodium olefin sulfonate and dodecyl
Benzene sulfonic acid sodium salt, the weight ratio of a- sodium olefin sulfonate and neopelex is (3-5): (7-10) in the injection agent, into
One step is preferably (3-5): (7-9).
Injection agent uses the a- sodium olefin sulfonate and neopelex of special ratios, the reduction with high performance-price ratio
Solution interface tension performance reduces injection water hollow billet resistance in rock duct.
Wherein, the weight ratio of a- sodium olefin sulfonate and neopelex such as can be in injection agent, but unlimited
In 3:7,3:10,5:7,5:10 or 4:9.
It in one preferred embodiment, further include the raw material components of following parts by weight: 1-2 parts of reinforcing agent and initiation
0.5-1 parts of agent.
Initiator and reinforcing agent are modified after reacting with sustained release agent, slow down the water solubility rate of sustained release agent, delay significantly anti-clearly
Dirty agent effective component deenergized period.
Wherein, reinforcing agent for example can be, but be not limited to 1 part or 2 parts；Initiator for example can be, but be not limited to 0.5
Part, 0.6 part, 0.7 part, 0.8 part, 0.9 part or 1 part.
Cleaning antiscale provided by the invention uses the reinforcing agent and initiator of certain content proportion, changes to sustained release agent
Property delays cleaning antiscale effective component deenergized period significantly, and cleaning antiscale enters inside fracturing fracture, and in oil well production process
Middle slow release effective component slows down pressure to extend after low permeability oil field sandstone oil reservoir fracturing reform the fouling period in crack
Fouling blockage degree in crack, conducive to the validity period for increasing oil well measures to reform.
In a preferred embodiment of present embodiment, the initiator includes oligomeric diols and isocyanates,
The weight ratio of oligomeric diols and isocyanates is (0.3-0.7): (0.2-0.3) in the initiator, further preferably
(0.5-0.7): (0.2-0.3).
Wherein, the weight ratio of oligomeric diols and isocyanates such as can be in initiator, but be not limited to 0.3:0.2,
0.3:0.3,0.7:0.3,0.7:0.2 or 0.5:0.3.
In a preferred embodiment of present embodiment, the reinforcing agent includes olefin(e) acid and acylate, the increasing
The weight ratio of olefin(e) acid and acylate is (0.8-1.5): (0.2-0.5), further preferably (1-1.5): (0.3- in strong agent
0.5)。
Wherein, the weight ratio of olefin(e) acid and acylate such as can be in reinforcing agent, but be not limited to 0.8:0.5,1.5:
0.2,0.8:0.2,1.5:0.5 or 1:0.3.
In one preferred embodiment, the oligomeric diols include tetraethylene-glycol, diglycol or
At least one of triethylene-glycol, preferably tetraethylene-glycol；
And/or the isocyanates is diisocyanate；
And/or the olefin(e) acid includes at least one of hexenoic acid, acrylic acid or butenoic acid；
And/or the acylate includes at least one of sodium citrate, sodium gluconate and sodium phthalate.
It in one preferred embodiment, further include the raw material components of following parts by weight: 3-5 parts of coating agent.
Coating agent has stronger coating ability to the effective component of cleaning antiscale, maintains the stability of effective component.
Wherein, coating agent for example can be, but be not limited to 3 parts, 4 parts or 5 parts.
In a preferred embodiment of present embodiment, the coating agent is stearic acid.
According to the second aspect of the invention, the present invention provides a kind of preparation methods of cleaning antiscale, including walk as follows
It is rapid:
(a) de-plugging agent, corrosion inhibiter, optional stabilizer and optional injection agent are mixed, adds optional coating agent
Coating；
(b) product that the step (a) obtains is mixed with sustained release agent and optional reinforcing agent, is added after heating optionally
Initiator mix to get cleaning antiscale.
The preparation method of cleaning antiscale provided by the invention is easy to operate, at low cost, energy consumption is small and pollution-free.It is prepared
The effective component of cleaning antiscale be uniformly dispersed, easy to dissolve, had good sustained release effect has snaking, antiscale, corrosion inhibition, clay
Anti- expansion and low interfacial tension characteristic efficiently delay so that high pressure shorts the increasing injection of well and inhibit stake initial stage well
Unlifting pressure trend.
In one preferred embodiment, in the step (a), the incorporation time is 20-30min, and/or, add
After entering the coating agent, it is warming up to 70-72 DEG C.
Wherein, incorporation time for example can be, but be not limited to 20min, 21min, 22min, 23min, 24min, 25min,
26min, 27min, 28min, 29min or 30min；Warming temperature for example can be, but be not limited to 70 DEG C, 71 DEG C or 72 DEG C.
In one preferred embodiment, in the step (b), the incorporation time is 10-15min, and/or, institute
It states and is warming up to 160-165 DEG C.
Wherein, incorporation time for example can be, but be not limited to 10min, 11min, 12min, 13min, 14min or 15min；
Warming temperature for example can be, but be not limited to 160 DEG C, 161 DEG C, 162 DEG C, 163 DEG C, 164 DEG C or 165 DEG C.
In order to facilitate the clearer understanding present invention, below in conjunction with embodiment and comparative example to technical side of the invention
Case is described further.
Embodiment one
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
18 parts of ethylenediamine triacetic acid, 11 parts of diethylene triamine pentacetic acid (DTPA), 5 parts of salicylic acid, N, 2 parts of N'- di-o-tolyl thiocarbamide, potassium iodide 1
Part, 1 part of potassium molybdate, 25 parts of polylactic acid, 5 parts of PEG 20000 and 5 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 18:11:5, N in corrosion inhibiter, the weight ratio of N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate is 2:1:1, sustained release agent
Middle polylactic acid and the weight ratio of PEG 20000 are 25:5.
Embodiment two
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
12 parts of ethylenediamine triacetic acid, 7 parts of diethylene triamine pentacetic acid (DTPA), 3 parts of salicylic acid, N, 2 parts of N'- di-o-tolyl thiocarbamide, potassium iodide 1.5
Part, 1.5 parts of potassium molybdate, 22 parts of polylactic acid, 3 parts of PEG 20000 and 3 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 12:7:3, N in corrosion inhibiter, the weight ratio of N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate is 2:1.5:1.5, sustained release
Polylactic acid and the weight ratio of PEG 20000 are 22:3 in agent.
Embodiment three
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
20 parts of ethylenediamine triacetic acid, 12 parts of diethylene triamine pentacetic acid (DTPA), 5 parts of salicylic acid, N, 1 part of N'- di-o-tolyl thiocarbamide, potassium iodide 1
Part, 1 part of potassium molybdate, 30 parts of polylactic acid, 5 parts of PEG 20000 and 4 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 20:12:5, N in corrosion inhibiter, the weight ratio of N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate is 1:1:1, sustained release agent
Middle polylactic acid and the weight ratio of PEG 20000 are 30:5.
The preparation method of cleaning antiscale provided by embodiment one to three, includes the following steps:
(1) by N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA), salicylic acid, N, N'- di-o-tolyl
Thiocarbamide, potassium iodide and potassium molybdate are added in mixing machine, and 25min is mixed in mixing machine；
(2) stearic acid is added in the spraying system of vulcanization bed seed-coating machine, slow heating is warming up to 71 DEG C, by step (1)
Obtained mixture is slowly added in vulcanization bed seed-coating machine, forms 2-3mm single-size；
(3) after particle is cooling, mixing machine is added in the product and polylactic acid and PEG 20000 that step (2) is obtained
It is interior, 15min is mixed in mixing machine；
(4) double screw extruder temperature is increased to 163 DEG C, the mixture that step (3) obtains is added to twin-screw and is squeezed
The feeding port of machine out opens extruder vacuum switch, through double screw extruder melting, squeezes out and cuts granulation, form 3-4mm
Cleaning antiscale.
Example IV
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
18 parts of ethylenediamine triacetic acid, 11 parts of diethylene triamine pentacetic acid (DTPA), 5 parts of salicylic acid, 8 parts of benzyltrimethylammonium chloride, choline chloride 7
Part, 3 parts of a- sodium olefin sulfonate, 7 parts of neopelex, N, 2 parts of N'- di-o-tolyl thiocarbamide, 1 part of potassium iodide, molybdic acid
1 part of potassium, 25 parts of polylactic acid, 5 parts of PEG 20000 and 5 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 18:11:5, the weight ratio of benzyltrimethylammonium chloride and choline chloride is 8:7, a- alkenyl sulphur in injection agent in stabilizer
The weight ratio of sour sodium and neopelex is 3:7, N in corrosion inhibiter, N'- di-o-tolyl thiocarbamide, potassium iodide and molybdic acid
The weight ratio of potassium is 2:1:1, and polylactic acid and the weight ratio of PEG 20000 are 25:5 in sustained release agent.
Embodiment five
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
15 parts of ethylenediamine triacetic acid, 12 parts of diethylene triamine pentacetic acid (DTPA), 5 parts of salicylic acid, 5 parts of benzyltrimethylammonium chloride, choline chloride 7
Part, 5 parts of a- sodium olefin sulfonate, 10 parts of neopelex, N, 1 part of N'- di-o-tolyl thiocarbamide, 1 part of potassium iodide, molybdic acid
1 part of potassium, 22 parts of polylactic acid, 5 parts of PEG 20000 and 4 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 15:12:5, the weight ratio of benzyltrimethylammonium chloride and choline chloride is 5:7, a- alkenyl sulphur in injection agent in stabilizer
The weight ratio of sour sodium and neopelex is 5:10, N in corrosion inhibiter, N'- di-o-tolyl thiocarbamide, potassium iodide and molybdic acid
The weight ratio of potassium is 1:1:1, and polylactic acid and the weight ratio of PEG 20000 are 22:5 in sustained release agent.
Embodiment six
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
20 parts of ethylenediamine triacetic acid, 8 parts of diethylene triamine pentacetic acid (DTPA), 3 parts of salicylic acid, 8 parts of benzyltrimethylammonium chloride, 5 parts of choline chloride,
5 parts of a- sodium olefin sulfonate, 7 parts of neopelex, N, 1 part of N'- di-o-tolyl thiocarbamide, 1.5 parts of potassium iodide, potassium molybdate
1.5 parts, 30 parts of polylactic acid, 3 parts of PEG 20000 and 3 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 20:8:3, the weight ratio of benzyltrimethylammonium chloride and choline chloride is 8:5, a- olefin sulfonic acid in injection agent in stabilizer
The weight ratio of sodium and neopelex is 5:7, N in corrosion inhibiter, N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate
Weight ratio be 1:1.5:1.5, polylactic acid and the weight ratio of PEG 20000 are 30:3 in sustained release agent.
Example IV includes the following steps: to the preparation method of cleaning antiscale provided by six
(1) by N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA), salicylic acid, benzyl trimethyl chlorination
Ammonium, choline chloride, a- sodium olefin sulfonate, neopelex and N, N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate
It is added in mixing machine, 25min is mixed in mixing machine；
(2) stearic acid is added in the spraying system of vulcanization bed seed-coating machine, slow heating is warming up to 71 DEG C, by step (1)
Obtained mixture is slowly added in vulcanization bed seed-coating machine, forms 2-3mm single-size；
(3) after particle is cooling, mixing machine is added in the product and polylactic acid and PEG 20000 that step (2) is obtained
It is interior, 15min is mixed in mixing machine；
(4) double screw extruder temperature is increased to 163 DEG C, the mixture that step (3) obtains is added to twin-screw and is squeezed
The feeding port of machine out opens extruder vacuum switch, through double screw extruder melting, squeezes out and cuts granulation, form 3-4mm
Cleaning antiscale.
Embodiment seven
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
18 parts of ethylenediamine triacetic acid, 11 parts of diethylene triamine pentacetic acid (DTPA), 5 parts of salicylic acid, 8 parts of benzyltrimethylammonium chloride, choline chloride 7
Part, 3 parts of a- sodium olefin sulfonate, 7 parts of neopelex, N, 2 parts of N'- di-o-tolyl thiocarbamide, 1 part of potassium iodide, molybdic acid
1 part of potassium, 25 parts of polylactic acid, 5 parts of PEG 20000,1 part of acrylic acid, 0.5 part of sodium phthalate, tetraethylene-glycol
0.3 part, 0.2 part of diisocyanate and 5 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 18:11:5, the weight ratio of benzyltrimethylammonium chloride and choline chloride is 8:7, a- alkenyl sulphur in injection agent in stabilizer
The weight ratio of sour sodium and neopelex is 3:7, N in corrosion inhibiter, N'- di-o-tolyl thiocarbamide, potassium iodide and molybdic acid
The weight ratio of potassium is 2:1:1, and polylactic acid and the weight ratio of PEG 20000 are 25:5, acrylic acid in reinforcing agent in sustained release agent
Weight ratio with sodium phthalate is 1:0.5, and the weight ratio of tetraethylene-glycol and diisocyanate is 0.3 in initiator:
0.2。
Embodiment eight
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
14 parts of ethylenediamine triacetic acid, 9 parts of diethylene triamine pentacetic acid (DTPA), 3 parts of salicylic acid, 6 parts of benzyltrimethylammonium chloride, 7 parts of choline chloride,
4 parts of a- sodium olefin sulfonate, 8 parts of neopelex, N, 2 parts of N'- di-o-tolyl thiocarbamide, 1.5 parts of potassium iodide, potassium molybdate
1.5 parts, 23 parts of polylactic acid, 4 parts of PEG 20000,0.8 part of acrylic acid, 0.5 part of sodium phthalate, tetraethylene-glycol
0.7 part, 0.3 part of diisocyanate and 4 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 14:9:3, the weight ratio of benzyltrimethylammonium chloride and choline chloride is 6:7, a- olefin sulfonic acid in injection agent in stabilizer
The weight ratio of sodium and neopelex is 4:8, N in corrosion inhibiter, N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate
Weight ratio be 2:1.5:1.5, polylactic acid and the weight ratio of PEG 20000 are 23:4, propylene in reinforcing agent in sustained release agent
The weight ratio of acid and sodium phthalate is 0.8:0.5, and the weight ratio of tetraethylene-glycol and diisocyanate is in initiator
0.7:0.3.
Embodiment nine
A kind of cleaning antiscale is present embodiments provided, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
16 parts of ethylenediamine triacetic acid, 10 parts of diethylene triamine pentacetic acid (DTPA), 4 parts of salicylic acid, 7 parts of benzyltrimethylammonium chloride, choline chloride 6
Part, 5 parts of a- sodium olefin sulfonate, 9 parts of neopelex, N, 1 part of N'- di-o-tolyl thiocarbamide, 1 part of potassium iodide, molybdic acid
1 part of potassium, 28 parts of polylactic acid, 4 parts of PEG 20000,1.5 parts of acrylic acid, 0.2 part of sodium phthalate, tetraethylene-glycol
0.5 part, 0.3 part of diisocyanate and 3 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 16:10:4, the weight ratio of benzyltrimethylammonium chloride and choline chloride is 7:6, a- alkenyl sulphur in injection agent in stabilizer
The weight ratio of sour sodium and neopelex is 5:9, N in corrosion inhibiter, N'- di-o-tolyl thiocarbamide, potassium iodide and molybdic acid
The weight ratio of potassium is 1:1:1, and polylactic acid and the weight ratio of PEG 20000 are 28:4, acrylic acid in reinforcing agent in sustained release agent
Weight ratio with sodium phthalate is 1.5:0.2, and the weight ratio of tetraethylene-glycol and diisocyanate is in initiator
0.5:0.3.
The preparation method of cleaning antiscale provided by embodiment seven to nine, includes the following steps:
(1) by N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA), salicylic acid, benzyl trimethyl chlorination
Ammonium, choline chloride, a- sodium olefin sulfonate, neopelex and N, N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate
It is added in mixing machine, 25min is mixed in mixing machine；
(2) stearic acid is added in the spraying system of vulcanization bed seed-coating machine, slow heating is warming up to 71 DEG C, by step (1)
Obtained mixture is slowly added in vulcanization bed seed-coating machine, forms 2-3mm single-size；
(3) product for obtaining step (2) after particle is cooling and polylactic acid, PEG 20000, acrylic acid and neighbour
Phthalic acid sodium is added in mixing machine, and 15min is mixed in mixing machine；
(4) double screw extruder temperature is increased to 163 DEG C, the mixture that step (3) obtains is added to twin-screw and is squeezed
The feeding port of machine out, and whole tetraethylene-glycols and diisocyanate are dropped evenly, extruder vacuum switch is opened, through double
Screw extruder melting squeezes out and cuts granulation, forms the cleaning antiscale of 3-4mm.
Comparative example one
This comparative example provides a kind of cleaning antiscale, what is different from the first embodiment is that the constituent content and proportion of de-plugging agent
Not within protection scope of the present invention.
This comparative example provides a kind of cleaning antiscale, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
30 parts of ethylenediamine triacetic acid, 5 parts of diethylene triamine pentacetic acid (DTPA), 15 parts of salicylic acid, N, 2 parts of N'- di-o-tolyl thiocarbamide, potassium iodide 1
Part, 1 part of potassium molybdate, 25 parts of polylactic acid, 5 parts of PEG 20000 and 5 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 30:5:15, N in corrosion inhibiter, the weight ratio of N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate is 2:1:1, sustained release agent
Middle polylactic acid and the weight ratio of PEG 20000 are 25:5.
Comparative example two
This comparative example provides a kind of cleaning antiscale, what is different from the first embodiment is that the constituent content and proportion of corrosion inhibiter
Not within protection scope of the present invention.
This comparative example provides a kind of cleaning antiscale, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
18 parts of ethylenediamine triacetic acid, 11 parts of diethylene triamine pentacetic acid (DTPA), 5 parts of salicylic acid, N, 4 parts of N'- di-o-tolyl thiocarbamide, potassium iodide 1
Part, 1 part of potassium molybdate, 25 parts of polylactic acid, 5 parts of PEG 20000 and 5 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 18:11:5, N in corrosion inhibiter, the weight ratio of N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate is 4:1:1, sustained release agent
Middle polylactic acid and the weight ratio of PEG 20000 are 25:5.
Comparative example three
This comparative example provides a kind of cleaning antiscale, what is different from the first embodiment is that the constituent content and proportion of sustained release agent
Not within protection scope of the present invention.
This comparative example provides a kind of cleaning antiscale, the raw material components including following parts by weight: N- beta-hydroxy ethyl second
18 parts of ethylenediamine triacetic acid, 11 parts of diethylene triamine pentacetic acid (DTPA), 5 parts of salicylic acid, N, 2 parts of N'- di-o-tolyl thiocarbamide, potassium iodide 1
Part, 1 part of potassium molybdate, 15 parts of polylactic acid, 5 parts of PEG 20000 and 5 parts of stearic acid.
Wherein, N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic weight in de-plugging agent
Than for 18:11:5, N in corrosion inhibiter, the weight ratio of N'- di-o-tolyl thiocarbamide, potassium iodide and potassium molybdate is 2:1:1, sustained release agent
Middle polylactic acid and the weight ratio of PEG 20000 are 15:5.
The preparation method of cleaning antiscale provided by comparative example one to three is identical as the preparation method of embodiment one.
Experimental example
To sustained release performance of the cleaning antiscale provided by each embodiment and comparative example in injection water, to different tampers
Scale removal performance, the scale-inhibiting properties to different divalent metal dirts and the interfacial tension performance in injection water are tested, test knot
Fruit is as shown in table 1.
Sustained release performance test of the cleaning antiscale provided by the embodiment of the present invention seven in injection water, as shown in Figure 1；To not
With the scale removal performance test of tamper, as shown in Figure 2；Scale-inhibiting properties test to different divalent metal dirts, as shown in Figure 3；?
The interfacial tension performance test in water is injected, as shown in Figure 4.
1 test result of table
As data in table 1 it is found that cleaning antiscale provided by the embodiment of the present invention one to seven is to calcium carbonate and calcium sulfate
Dissolution rate reaches 95% or more, reaches 85% or more to the dissolution rate of di-iron trioxide；90% is reached to the scale inhibition performance of calcium sulfate
More than, 85% or more is reached to the scale inhibition performance of calcium carbonate and barium sulfate.
Wherein, example IV to cleaning antiscale provided by six can reduce the interfacial tension of injection water up to 3*10-3MN/m, this
It is that can be reduced small bits of clay expansion and migration due to stabilizer and injection agent and the mutual coordinated of other components, reduce injection
Water interfacial tension and hollow billet resistance.
Wherein, cleaning antiscale provided by embodiment seven to nine reaches 230 days the deenergized period at 60 DEG C.Reinforcing agent and draw
Hair agent is reacted with corrosion inhibiter, is modified to sustained release agent, delays cleaning antiscale effective component deenergized period significantly, cleaning antiscale into
Enter inside fracturing fracture, and the slow release effective component in oil well production process, to extend low permeability oil field sandstone oil reservoir
In the fouling period in crack after fracturing reform, slow down fouling blockage degree in pressure-break.
Comparative example one is compared with embodiment one, and cleaning antiscale is decreased obviously the dissolution rate of calcium carbonate and calcium sulfate, to oxygen
The dissolution rate for changing iron is declined, and is decreased obviously to the scale inhibition performance of calcium carbonate, calcium sulfate and barium sulfate, illustrates to work as de-plugging
The constituent content of agent and proportion not within protection scope of the present invention when, not only the solvability of tamper is declined, especially
It is the solvability decline to carbonate and sulfate, and the chelation of bivalent metal ion is declined, restrains tamper
Secondary fouling declines cause to reduce the scale inhibition performance of carbonate and sulfate.
For comparative example two compared with embodiment one, cleaning antiscale is decreased obviously the dissolution rate of di-iron trioxide, illustrates to work as
The constituent content of corrosion inhibiter and proportion not within protection scope of the present invention when, each component of corrosion inhibiter cannot be with other raw materials
Component forms good compatibility and compatibility, reduces to the dissolution rate of di-iron trioxide, and the corrosion rate for injecting water rises.
For comparative example three compared with embodiment one, cleaning antiscale does not have slow release at 60 DEG C, illustrates when sustained release agent
Constituent content and proportion not within protection scope of the present invention when, the water solubility rate of cleaning antiscale rises, and reduces clear antiscale
The deenergized period of the effective component of agent, since the effective component of cleaning antiscale releases within a short period of time, action time is short,
Dissolution rate and scale inhibition performance to tamper are all declined, and are reduced to the interfacial tension of injection water unobvious.
In summary, the effective component of cleaning antiscale provided by the invention has through long-term slow release in injection water
There are snaking, antiscale, inhibition, clay anti-swelling and reduce Interfacial Tension Behavior, so that high pressure shorts the increasing injection of well, efficiently
Delay and inhibits stake initial stage well unlifting pressure trend.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (23)
1. a kind of cleaning antiscale, which is characterized in that the raw material components including following parts by weight: 22-37 parts of de-plugging agent, corrosion inhibiter
3-5 parts and sustained release agent 25-35 parts；
The de-plugging agent includes N- beta-hydroxy ethyl-3-acetic acid ethylenediamine, diethylene triamine pentacetic acid (DTPA) and salicylic acid.
2. cleaning antiscale according to claim 1, which is characterized in that the raw material components including following parts by weight: de-plugging
22-34 parts of agent, 3-5 parts of corrosion inhibiter and 25-34 parts of sustained release agent.
3. cleaning antiscale according to claim 1, which is characterized in that N- beta-hydroxy ethylethylenediamine three in the de-plugging agent
Acetic acid, diethylene triamine pentacetic acid (DTPA) and salicylic weight ratio are (12-20): (7-12): (3-5).
4. cleaning antiscale according to claim 3, which is characterized in that N- beta-hydroxy ethylethylenediamine three in the de-plugging agent
Acetic acid, diethylene triamine pentacetic acid (DTPA) and salicylic weight ratio are (15-20): (8-12): (3-5).
5. cleaning antiscale according to claim 1, which is characterized in that the corrosion inhibiter includes N, N'- di-o-tolyl sulphur
Urea, potassium iodide and potassium molybdate.
6. cleaning antiscale according to claim 5, which is characterized in that N in the corrosion inhibiter, N'- di-o-tolyl thiocarbamide,
Potassium iodide and the weight ratio of potassium molybdate are (1-2): (1-1.5): (1-1.5).
7. cleaning antiscale according to claim 5, which is characterized in that N in the corrosion inhibiter, N'- di-o-tolyl thiocarbamide,
Potassium iodide and the weight ratio of potassium molybdate are (1-1.5): (1-1.5): (1-1.5).
8. cleaning antiscale according to claim 1, which is characterized in that the sustained release agent includes polylactic acid and polyethylene glycol
20000。
9. cleaning antiscale according to claim 8, which is characterized in that polylactic acid and polyethylene glycol in the sustained release agent
20000 weight ratio is (22-30): (3-5).
10. cleaning antiscale according to claim 8, which is characterized in that polylactic acid and polyethylene glycol in the sustained release agent
20000 weight ratio is (25-30): (3-5).
11. cleaning antiscale according to claim 1, which is characterized in that further include the raw material components of following parts by weight: steady
Determine 10-15 parts and injection agent 10-15 parts of agent.
12. cleaning antiscale according to claim 11, which is characterized in that the stabilizer includes benzyltrimethylammonium chloride
And choline chloride, the weight ratio of benzyltrimethylammonium chloride and choline chloride is (5-8): (5-7) in the stabilizer.
13. cleaning antiscale according to claim 12, which is characterized in that the stabilizer includes benzyltrimethylammonium chloride
And choline chloride, the weight ratio of benzyltrimethylammonium chloride and choline chloride is (6-8): (6-7) in the stabilizer.
14. cleaning antiscale according to claim 11, which is characterized in that the injection agent includes a- sodium olefin sulfonate and ten
Dialkyl benzene sulfonic acids sodium, the weight ratio of a- sodium olefin sulfonate and neopelex is (3-5): (7- in the injection agent
10)。
15. cleaning antiscale according to claim 14, which is characterized in that the injection agent includes a- sodium olefin sulfonate and ten
Dialkyl benzene sulfonic acids sodium, the weight ratio of a- sodium olefin sulfonate and neopelex is (3-5): (7- in the injection agent
9)。
16. cleaning antiscale according to claim 1, which is characterized in that further include the raw material components of following parts by weight: increasing
1-2 parts and initiator 0.5-1 parts of strong agent.
17. cleaning antiscale according to claim 16, which is characterized in that the reinforcing agent includes olefin(e) acid and acylate,
The weight ratio of olefin(e) acid and acylate is (0.8-1.5): (0.2-0.5) in the reinforcing agent.
18. cleaning antiscale according to claim 17, which is characterized in that the reinforcing agent includes olefin(e) acid and acylate,
The weight ratio of olefin(e) acid and acylate is (1-1.5): (0.3-0.5) in the reinforcing agent.
19. cleaning antiscale according to claim 1, which is characterized in that further include the raw material components of following parts by weight: packet
By 3-5 parts of agent.
20. cleaning antiscale according to claim 19, which is characterized in that the coating agent is stearic acid.
21. a kind of method for preparing the described in any item cleaning antiscales of claim 1~20, which is characterized in that including walking as follows
It is rapid:
(a) de-plugging agent, corrosion inhibiter, optional stabilizer and optional injection agent are mixed, adds optional coating agent coating；
(b) product that the step (a) obtains is mixed with sustained release agent and optional reinforcing agent, optional draw is added after heating
Agent mixing is sent out to get cleaning antiscale.
22. the method for cleaning antiscale according to claim 21, which is characterized in that in the step (a), when the mixing
Between be 20-30min, and/or, after the coating agent is added, be warming up to 70-72 DEG C.
23. the method for cleaning antiscale according to claim 22, which is characterized in that in the step (b), when the mixing
Between be 10-15min, and/or, it is described to be warming up to 160-165 DEG C.
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| CN114525120B (en) * | 2022-03-02 | 2023-06-13 | 宁夏朔光石油科技有限公司 | Non-flowback cleaning acidification blocking removal working solution and preparation method and application thereof |
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| CN101161761A (en) * | 2007-11-27 | 2008-04-16 | 李文锋 | Oil field pipe plugging removal reagent |
| CA2711634C (en) * | 2008-01-09 | 2016-09-27 | Akzo Nobel N.V. | Acidic aqueous solution containing a chelating agent and the use thereof |
| MX2013006612A (en) * | 2010-12-17 | 2013-07-29 | Akzo Nobel Chemicals Int Bv | Fluid suitable for treatment of carbonate formations containing a chelating agent. |
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