CN104194758B - Oil well neutral de-plugging agent composition and preparation method thereof - Google Patents
Oil well neutral de-plugging agent composition and preparation method thereof Download PDFInfo
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- CN104194758B CN104194758B CN201410489269.0A CN201410489269A CN104194758B CN 104194758 B CN104194758 B CN 104194758B CN 201410489269 A CN201410489269 A CN 201410489269A CN 104194758 B CN104194758 B CN 104194758B
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/52—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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- 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
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Abstract
A kind of oil well neutral de-plugging agent composition, is made up of the raw material of following portions by weight：10~14 parts of poly-epoxy succinic acid amine, 35~40 parts of second diene pentaacetic acid amine, 33~37 parts of hydroxysuccinic acid amine, 20~25 parts of poly amic acid, 7~10 parts of poly (sodium aspartate), 10~14 parts of sodium gluconate, 10~15 parts of atlapulgite, 20~25 parts of potassium peroxydisulfate, 9~11 parts of hydroxysuccinic acid amine, 4~7 parts of sodium salicylate, 5~9 parts of hexamethylenetetramine, 0.2~0.3 part of vanadic anhydride, 2~5 parts of starch, α sulfonic acid monocarboxylic acid and its derivative（MES) 5~8 parts and 0.1~0.3 part of diethylaluminum ethoxide.The present invention is used for oil extraction in oil field rod-pumped well and screw bolt well de-plugging, cleaning de-plugging and the etching problem of oil production equipment of oilfield pumping well and screw bolt well can effectively be solved, De-plugging speed is fast, neutral corrosion-free, cleaning de-plugging waste liquid has can self-degradation, need not the row of returning ground carry out sewage disposal, it is corrosion-free, without dead angle, precipitation and secondary stifled well phenomenon are not produced, than traditional pickling de-plugging, biological plugging releasing and solvent de-plugging safety and reliability.
Description
Technical field
The present invention relates to the auxiliary agent that a kind of oil extraction in oil field is used, particularly a kind of oil well neutral de-plugging agent combination
Thing, the invention further relates to the preparation method of oil well neutral de-plugging agent composition.
Background technology
Oil field stratum water forms fouling because of the change of the conditions such as temperature, pressure, makes waterflooding extraction oil extraction system and collection defeated
The corrosion and fouling of system equipment are on the rise with age is adopted, and fouling and clogging and corruption occur in some oil wells and oil well pump
Eating thrown hole and cause producing well and pipeline abandonment.Therefore, the corrosion and scaling problem of producing well and oil well pump is also increasingly subject to people
Attention.
Producing well and oil well pump and gathering line system equipment are corroded by X-ray diffraction, pattern photograph, calcination method etc.
Fouling shows that dissolved oxygen, hydrogen sulfide in injection water etc. can be to oil field flood pattern and oil extraction in oil field pump after being analyzed research
Corrosion and scaling is formed, dirt deposition makes water injection well and producing well bore diminish on producing well inner-walls of duct and oil well pump, influenceed
Water-injection efficiency and oil recovery efficiency.Water injection well and producing well fouling can cause the phase mutual coupling of serious underdeposit corrosion, fouling and corrosion
Facilitation is closed, the service life of water injection equipment and oil production equipment can be shortened, corrosion product is with water injection well and in underground through adopting
It is oil well produced, can all pollute and block reservoir, reservoir injury is caused, serious scale is caused to producing well and oil well pump, influence is former
The harvesting of oil.
Oil field stratum fouling and erosion fouling are inevitable problems during water flooding is produced, and it is with oil field
Produce water to increase and more protrude.Common fouling is CaCO3、MgCO3、CaSiO3And CaSO4Dirt, corrosion product deposition
Also FeCO3Dirt, FeS dirts, Fe (OH)2Dirty Fe2O3Dirt and the solubility precipitate such as content sodium chloride high greatly.Oil field is most
The fouling of common calcium carbonate, calcium sulfate, strontium sulfate etc. is the one of the main reasons to form underdeposit corrosion.In water flooding
Knot scale and corrosion product dirt, it has also become one of key factor of influence oil field development benefit.Can be by water flooding
The origin cause of formation of the fouling of generation and erosion dirt is summarized as follows：
（1）Gas such as the oxygen, hydrogen sulfide and carbon dioxide etc. dissolved in the water of oil field, the property for making water changes, sour
Property enhancing, so as to cause the generation of the knot scale and corrosion product dirt of pipeline and producing well and equipment.
（2）Mixing dirt can be formed when flour sand, clay mineral, crude oil colloid and asphalt content high in oil field stratum oil stream,
Cause dirty precipitation.It is the master for causing formation pore and pumpingh well fouling and oil extraction pump equipment corrosion in crude oil studies on asphaltene precipitation
One of reason is wanted, is also one of the reason for causing oil well and oil well pump to be blocked.
（3）Harmful ion in injection oil field stratum, such as anion, scaling cations, can all cause water injection well, producing well
Fouling and corrosion with oil extraction pump, scale and corrosion product easily cause the blocking of formation pore and pumpingh well and oil well pump.
（4）The clear water of injection and the sewage of re-injection, mostly mutual exclusive two kinds of water, mutual exclusive water be used in mixed way into
And more serious fouling is produced, can also generate underdeposit corrosion and produce corrosion fouling.
（5）The harmful bacteria contained in water, such as sulfatereducting bacteria, iron bacteria can cause bacterial corrosion, produce bacterium rotten
Lose the dirt of thing.
（6）Oil extraction in oil field enters the high water-cut development stage, and ternary composite driving is one of important technology of guarantee continuously steady production,
But find in use, oil well and oil extraction pump fouling are serious, cause pit shaft running environment to deteriorate, at the scene of recovering the oil
Often occur that bar is delayed, bar disconnected, holddown and the phenomenon such as stuck, have a strong impact on the normal oil recovery production of producing well.Study carefully its because be by
Caustic soda, surfactant sodium dodecyl base benzene sulfonic acid sodium salt and polyacrylamide for being added in the system of ternary composite driving etc., can produce
The polymer material dirt that the precipitation of raw divalence sulfonic acid salt crust is produced with polyacrylamide, this also exactly causes formation blockage, producing well
Block and oil well pump holddown and stuck main reason.
At present, main using acidifying de-plugging, acidifying de-plugging easily produces dirty slag and secondary precipitate, secondary blocking occurs and adopts
Oil well and stuck oil well pump；Oil production equipment can also be made because of factors such as corrosion inhibiter failure, corrosion inhibiter emulsification inequality or misoperations
Into corrosion etc..
The content of the invention
It is an object of the invention to provide a kind of De-plugging speed it is fast, it is neutral it is corrosion-free, do not produce precipitation and secondary stifled well existing
The oil well neutral de-plugging agent composition of elephant；The second object of the present invention is to provide oil well neutral de-plugging agent
Preparation method.
To achieve these goals, the technical scheme that the present invention takes is as follows：A kind of oil well neutral de-plugging agent group
Compound, is made up of the raw material of following portions by weight：10~14 parts of poly-epoxy succinic acid amine, second diene pentaacetic acid amine 35~40
Part, 33~37 parts of hydroxysuccinic acid amine, 20~25 parts of poly amic acid, 7~10 parts of poly (sodium aspartate), sodium gluconate 10~
14 parts, 10~15 parts of atlapulgite, 20~25 parts of potassium peroxydisulfate, 9~11 parts of hydroxysuccinic acid amine, 4~7 parts of sodium salicylate, six
5~8 parts of 5~9 parts of methine tetramine, 0.2~0.3 part of vanadic anhydride, 2~5 parts of starch, α-sulfonic acid monocarboxylic acid and its derivative
With 0.1~0.3 part of diethylaluminum ethoxide.
The raw material of above-mentioned parts by weight is prepared under the preparation method of oil well neutral de-plugging agent composition includes
State step：
1st, by poly-epoxy succinic acid amine, second diene pentaacetic acid amine, hydroxysuccinic acid amine, poly amic acid, poly- asparagus fern
Propylhomoserin sodium, sodium gluconate and atlapulgite, with 20 mesh sieves are crossed after grinding crusher machine, are stirred until homogeneous, and the first powder is obtained；The
One powder as de-plugging agent main component；
2nd, by potassium peroxydisulfate, hydroxysuccinic acid amine, sodium salicylate and hexamethylenetetramine, stirred with cone blender
40 minutes, to uniform, then cross 20 mesh sieves, and the second powder is obtained；Second powder is used as solvay-type supporting surfactant powder；
3rd, by vanadic anhydride and 1~2 part of starch, with cone blender to uniform, 40 mesh sieves are then crossed, is obtained
3rd powder；3rd powder is used as Catalyst Adsorption powder；
4th, by 1~3 part of starch, α-sulfonic acid monocarboxylic acid and its derivative and diethylaluminum ethoxide, cone blender is used
Stirring then crosses 20 mesh sieves in 40 minutes to uniform, and the 4th powder is obtained, and the 4th powder makes table as the carrier of surfactant
Face activating agent is more uniform；
5th, obtained first powder, the second powder, the 3rd powder are mixed with the 4th powder, is stirred, be made oil field
Producing well neutral de-plugging agent.
Oil well neutral de-plugging agent composition of the present invention, its outward appearance is that colourless or slight yellowish is powdered, and granularity is straight
Footpath is that, less than 20 mesh, water content is less than 6%, and bulk specific weight is 1.03~1.12g/cm3 ；The pH of de-plugging agent is 6~7, and rate of corrosion is small
In 0.1g/ (m2.h)；Made according to the aqueous solution that producing well dirt chocking-up degree water is configured to mass percent concentration 2~5%
With.The present invention has carried out application test in middle oily Daqing oil field, by the water-soluble of the mass percent concentration 2~5% of present invention preparation
Liquid, is injected into oil extraction in oil field stratum with 10Mpa high-pressure pumps, under the conditions of oil field stratum temperature 45 C, with calcium carbonate in stratum,
Carbonic acid magne-scale and ternary composite driving polymer material dirt etc. are chemically reacted, and formation cleanup de-plugging, solution were completed within 24 hours
Oil extraction in oil field rate has reached the designed capacity of producing well after stifled.
The present invention is used for oil extraction in oil field rod-pumped well and screw bolt well de-plugging, can effectively solve oilfield pumping well and screw rod
The cleaning de-plugging of pump sump and the etching problem of oil production equipment, and can control de-plugging agent and sandstone reaction speed, reactant is into pasty state
Thing, prevents bulk secondary blocking producing well and the oil extraction pump of dirt slag that drop.
Its De-plugging speed of de-plugging agent of the present invention is fast, neutral thing that is corrosion-free, can quickly dissolving ternary composite displacement system generation
Material dirt, Pitch deposits dirt, carbonate scale, silicate scale and sulfate scale, the waste liquid of cleaning de-plugging has can self-degradation, nothing
Need to the row of returning ground carry out sewage disposal, clean oil well and oil well pump de-plugging, it is corrosion-free, without dead angle, do not produce precipitation and
Secondary stifled well phenomenon, de-plugging process time is no more than 24 hours, the corrosion-free de-plugging of safety is reached, than traditional pickling de-plugging, life
Thing de-plugging and solvent de-plugging safety and reliability.
The Main Function and application mechanism of each component of the present invention are as follows：
1st, poly-epoxy succinic acid amine：Compound group by five to six rings is not into resulting in environmental accumulation, contaminant water after de-plugging
Body, biological degradability is good, is the complexing of metal ion agent that selection is tested by a large amount of molten dirts.Demonstrate,proved by de-plugging research evaluation result
It is bright：When poly-epoxy succinic acid amine generates complex compound with metal ion, multiple complexing rings are usually formed, in a complex molecules
The more, the stability of complex compound is higher for number, the complexing ring formed when ligand and complexing of metal ion the more, ligand and gold
The complex compound that category ion complexation is formed just more is stablized.Because poly-epoxy succinic acid amine has multiple complexing rings, and can simultaneously with
Many metal ions such as Ca2+、Mg2+、Fe3+、Fe2+、Ba2+And Sr2+Plasma produce Complex effect, generation stabilization with higher
The complex compound of solubility, prevents these particles from being combined with corresponding acid group, precipitation is prevented, so as to effectively prevent de-plugging
Secondary precipitate after the molten dirt of agent blocks the capillary and trunnion of oil field stratum.Meanwhile, poly-epoxy succinic acid amine also has good
Corrosion inhibition, the oxygen atom in its molecular polarity group, with unshared electron pair, can turn into adsorption site adsorbing metal
Five-membered cyclic compound is formed with metal, and is adsorbed on metal surface, one layer of diaphragm of densification is formed along metal surface, from
And play a part of inhibition protection oil production equipment.
2nd, second diene pentaacetic acid amine：It is a kind of important amino complexing agent, has very strong to calcium, magnesium, iron incrustation ion
Complexing, especially the complexing power to high volence metal ion is especially strong, in this de-plugging agent using molten dirty effect it is good, use
During complexometry scale removal unfreezing, effect is better than EDETATE SODIUM salt and EDTA ammonium salts, can be miscible with all components in this de-plugging agent, with other
Component with complexing can play synergy, improve unfreezing speed and effect.
3rd, hydroxysuccinic acid amine：A kind of complexing agent containing various hydroxyls and amido, can with calcium metal, magnesium, iron etc. from
Son forms complex compound soluble in water, can be used to remove the various ferric oxide products of metal erosion, can with this de-plugging agent other
All components compatibility, and with preferable inhibition and permeability, safety non-toxic.
4th, poly amic acid：The aobvious neutrality of pH value, the soluble dispersion in water, facile hydrolysis, because hydrolysis degree is different, macromolecular
The content of hydroxyl and amide groups is also different in chain, and the larger carboxyl-content of hydrolysis degree is high, during as oil pump decoder
Effect is good.
5th, poly (sodium aspartate)：It belongs to the class in polyamino acid, with excellent dispersion, cleaning, molten dirt, de-plugging
Multiple inorganic and organic ion performance；The complex compound of stabilization can be formed with the metal ion such as calcium, magnesium in dirt, to de-plugging scale removal
In calcium carbonate, calcium oxide, magnesium carbonate have excellent peptizaiton；It efficient by microorganism, stabilization can be degraded to nontoxic nothing
Harmful final product；Consider from Environmental compatibility in the present invention, biodegradable becomes especially valuable oil field and adopts
The principle active component of oil pump de-plugging agent.
6th, sodium gluconate：It is a kind of multi-hydroxy carboxy acid's type scale remover, in solvay-type cleaning agent, to iron, magnesium, barium, strontium
Plasma has a fabulous coordination ability, and corresponding carbonate to these ions, silicates and Sulfates have very well
Complexing cleaning ability, while also having good corrosion mitigating effect, and cooperative effect is presented, be complexed de-plugging agent prescription in carboxylate
In, complexing effect can be strengthened.
7th, atlapulgite：It is mainly used in refinery products（Lubricating oil, paraffin, vaseline）, urging as chemical industry
Agent and powder pesticide filler, are used to spray explosion-proof dirt, radioactive pollutant removal and the treatment of radioactive waste in colliery.
Atlapulgite is in this de-plugging agent as its cleaning agent, complexing agent adsorptive support.
8th, potassium peroxydisulfate：Potassium peroxydisulfate is largely used to cleaning agent, etching and the oil drilling of metal, and underground work is in normal temperature
Free radical is just decomposed into down, there is Scavenging activity with strong oxidizing property and to calcium carbonate scale and carbonic acid magne-scale；Driven for ternary
The polymer material dirt that oil systems are produced, there is good oxidative cleavage and dissolution.
9th, hydroxysuccinic acid amine：A kind of complexing agent containing various hydroxyls and amido, can with calcium metal, magnesium, iron etc. from
Son forms complex compound soluble in water, can be used to remove the various ferric oxide products of metal erosion, can with this de-plugging agent other
All components compatibility, and with preferable inhibition and permeability, safety non-toxic.
10th, sodium salicylate：With good reduction, while also being acted on Chemical cleaning scale removal.
11st, hexamethylenetetramine：Metal material is protected not to be corroded, with good corrosion inhibition.
12nd, vanadic anhydride：In the present invention as catalyst, the divalence sulfonic acid in oil field stratum and oil well petroleum pipeline
The deposition dirt of salt reacts with the polybasic carboxylic acid amine salt in this de-plugging agent, in the presence of the catalyst of vanadic anhydride, generates carboxylic
Barbiturates micromolecular compound soluble in water.
13rd, starch：Starch is that natural materials source is wide, cheap, pollution-free, is shunk by many glucose and formed, it
Containing many hydroxyls, these hydroxyls also have complexing.In this de-plugging agent, starch is lived for adsorbing added surface
The carrier of property agent, so as to the product that solid powdery is made after liquid adsorption.
14th, α-sulfonic acid monocarboxylic acid and its derivative：Its structure is long chain hydrocarbon groups or metal ion, is a kind of natural oil
It is the cationic surfactant of raw material, with excellent emulsibility, permeability and dispersiveness, it may have good biodegradation
Property, be conducive to environmental protection, it is safe and reliable and go grease and pitch dirt ability strong, and in high contents of calcium and magnesium Ion Cleaning decoder
In have good detergent power.
15th, diethylaluminum ethoxide：It is a kind of defoamer, the foam work that oil field stratum de-plugging process is produced is eliminated with rapid
With, its surface tension is relatively low, and easily absorption is spread on the liquid film of foam, after defoamer is sprawled to be adsorbed on bubble film,
The local surface tension of liquid film can be made to be reduced, while neighbouring liquid causes thinning of liquid film and ruptures under taking away liquid film；It is in liquid film
On sprawl quickly, very book, can rapid froth breaking, foam can not be regenerated during unfreezing again.
With the high speed development of industry, global environmental pollution and ecological disruption is increasingly serious, protects human survival ring
Border is very urgent.Therewith, China oil field uses the ecology involved by various additives, environment, resource, economy, etc. aspect
Problem be mentioned the height of development strategy, the liquid waste processing as produced by additive has been changed to prevent from origin or not
Produce pollution waste liquid, i.e., the prevention of original pollution and the improvement after uncontamination.The present invention uses Green Chemistry Theory and technology, choosing
With nontoxic development of raw materials green synthesis process and environmentally friendly production process, patented product of the present invention is on oil field ground
It is nontoxic to operator and oilfield environment during layer de-plugging.Develop main technical requirements of the invention and integrated machine of the present invention
Reason is as follows：
1st, the technical requirements of oil well of the present invention and oil well pump neutral de-plugging agent
The oil well and oil well pump neutral de-plugging agent that the present invention is provided are by various complexing agents, bleeding agent, wetting agent
Formed with surfactant compound,, when the formula of the de-plugging agent is studied, selected each component thing is neutral or inclined for we
Alkaline matter, and each component is all without producing corrosion to metal material, and its compatibility of various ingredients used, dissolve each other
Property, anti-corrosive properties, wetability and stability it is all fine, in de-plugging agent be free of H+、Cl-、S2-、SO4 2-Etc. be also easy to produce corrosive medium from
Son.The raw material for being used all is nontoxic, tasteless, corrosion-free or meta-alkalescence material, and is easy to degrade in the earth formation, is not polluted
Environment.This de-plugging agent have to carbonate, silicate, phosphate, the calcium of sulfate, magnesium ion well complexing, dispersion, infiltration and
Dissolution, chemical cleaning speed is fast.The divalence mahogany acid produced in for using alkaline surfactant polymer flooding oil-field in oil recovery process
Salt is precipitated and polyacrylamide polymers material dirt, can be with the component such as various complexing agents, dispersant, oxidant in this de-plugging agent
- OH ,-ONa ,-CONH2There is cooperative effect in isoreactivity group, oxidized, chain rupture, coordination and dispersion generation are soluble in water
Micromolecular compound, the purpose of polymer material dirt is removed to reach.
2nd, it is complexed descaling and blockage relieving mechanism
It is poly-epoxy succinic acid amine, hexadiene pentaacetic acid amine, hydroxysuccinic acid amine selected in patent of the present invention, poly-
NaAsp, sodium gluconate, potassium peroxydisulfate, hydroxysuccinic acid amine, sodium salicylate, hexamethylenetetramine, α-sulfonic acid list carboxylic
The active group containing various complex ions such as acid and its derivative and the complexing of carbonate scale, silicate scale and sulfate scale, become
It is water and complex compound soluble in water, so as to play de-plugging effect.This complex reaction is not carried out stoichiometrically, but by change
Learn what molecular proportion was carried out, generally the complexing agent de-plugging agent per several grams to tens grams, can just dissolve the dirt of a few hectogram calcium and magnesium ion,
If from several complexing agents, when its compatibility, solubilising are good, moreover it is possible to play cooperative effect, i.e., using this de-plugging agent with
In the case that amount is very low, also can be referred to as low dose effect with substantial amounts of fouling complexing of metal ion, this effect.
3rd, the security reliability of neutral de-plugging agent
Product of the present invention is free of inorganic acid, organic acid, highly basic and cleaning corrosion inhibiter, and pH is 6~7, is by various pharmacy
The compoundings such as intermediate, neutral complexing agent, oxidant, surfactant, defoamer are formed, fast in oil field stratum De-plugging speed, right
Asphalitine dirt, sulfosalt surfactant dirt, polyacrylamide material are dirty, various calcium and magnesium salt crust have very strong dissolution,
During producing well and oil well pump cleaning de-plugging, rate of corrosion is less than 0.1g/ (m2.h), it has been really achieved corrosion-free Chemical cleaning solution
It is stifled, than traditional chemical cleaning inorganic acid, organic acid, highly basic safety and reliability, completely eliminate because with pickling pumpingh well and taking out
The corrosion of the burst factor to oil production equipment such as corrosion inhibiter failure, corrosion inhibiter emulsification inequality or misoperation during oil pump.
It is as follows using beneficial effects of the present invention：
1st, neutral de-plugging agent can complete producing well and oil well pump de-plugging by one-step method
The pH of de-plugging agent is 6~7, without inorganic acid and organic acid, therefore is had without hydrogen ion, chlorion and sulfate radical etc.
Evil ion, rate of corrosion is less than 0.1g/ (m2.h), corrosion-free safe de-plugging is reached.In oil well and oil well pump de-plugging process
It is middle to use this neutral de-plugging agent, producing well and oil well pump chemistry solution can be completed by one-step method in normal temperature under the conditions of 100 DEG C
It is stifled, without neutralisation treatment and Passivation Treatment, chemical time is saved, improve de-plugging efficiency.
2nd, polymer material dirt and asphalitine dirt that ternary composite driving is produced are removed
This agent producing well and oil well pump in ternary compound oil drive system oil recovery process are produced by surfactant two
The compound scale of the precipitation generations such as valency petroleum sulfonate precipitation dirt, polyacrylamide polymers material dirt and Ferric oxide scale, at 24 hours
It is interior, the chemically neutral descaling and blockage relieving of oil well and oil well pump is completed under the conditions of free from corrosion cleaning operating mode.This agent can be quick
The tamper of dissolving oil well and oil well pump studies on asphaltene dirt, makes bleeding agent of addition etc. to be rapidly introduced into organic polymer
The inside of material dirt, makes de-plugging agent be contacted rapidly with organic polymer material dirt, makes asphalitine and the expansion of polymer material dirt, conversion,
Eventually form the small molecule solution for being easily soluble in water.
3rd, neutral de-plugging does not fall dirty slag and does not produce sediment
During using this agent de-plugging, all kinds of incrustation scales, rust deposite, asphalitine dirt, the thing deposited to oil recovery pit shaft and oil extraction pump surface
Material dirt has complexing well, infiltration, oxidation, dispersion and dissolution, and chemical reaction generation pastel occurs, and dirty slag is not produced
With secondary new sediment, classical acid can be efficiently solved and washed big slag off and secondary blocked asking for producing well and stuck oil well pump
Topic.
4th, the waste liquid of neutral de-plugging agent de-plugging is degradable, without the row's of returning floor treatment
Because all components of this agent are all by the raw material group such as degradable complexing agent, emulsifying agent, dispersant and oxidant
Into the dirt tied with oil well and oil well pump chemically reacts, and generates degradable small molecule salt, so that it may reach
Oilbearing stratum is to the oil recovery quality of water quality and environmental requirement；Using this de-plugging agent to oil well and oil extraction pump chemical plugging removal
Afterwards, without the treatment of the earthward row of returning, waste liquid returns row floor treatment operation and expense to the waste liquid of de-plugging after saving cleaning de-plugging.
5th, safe and reliable, scaling effect is good
For being complexed during de-plugging at oil well and oil well pump, due to being free of H in this de-plugging agent+And Cl-, to adopting
Oil well rig and oil recovery bar and well do not produce the precipitation in burn into dead angle or producing well and oil well pump, and reactant is pastel, and
And will not produce secondary stifled well and holddown phenomenon that cleaning materials precipitates, and can be in normal temperature under the conditions of 100 DEG C, the treatment de-plugging time is
24 hours or so, it is often more important that be really achieved corrosion-free safe chemistry de-plugging, than traditional pickling de-plugging, biological plugging releasing and molten
Agent de-plugging safety and reliability.This de-plugging agent is completely eliminated with the acidolysis etching problem that corrosion inhibiter failure is caused when stifled, is also evaded
Inflammable, explosive, poisonous and biotechnology is difficult to the risk controlled during solvent de-plugging, and for ensureing to keep the safety in production, long period is adopted
Oily important in inhibiting.
Specific embodiment
Embodiment 1, raw material is weighed by following components and weight：Poly-epoxy succinic acid amine 11Kg, second diene pentaacetic acid
Amine 38Kg, hydroxysuccinic acid amine 36Kg, poly amic acid 21Kg, poly (sodium aspartate) 9Kg, sodium gluconate 10Kg, activity are white
Native 14Kg, potassium peroxydisulfate 23Kg, hydroxysuccinic acid amine 10Kg, sodium salicylate 5Kg, hexamethylenetetramine 7Kg, by vanadic anhydride
0.3Kg, starch 4Kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) 6Kg and diethylaluminum ethoxide 0.3Kg.
The raw material of above-mentioned parts by weight is prepared into oil well neutral de-plugging agent composition according to following preparation methods：
1st, by poly-epoxy succinic acid amine, second diene pentaacetic acid amine, hydroxysuccinic acid amine, poly amic acid, poly- asparagus fern
Propylhomoserin sodium, sodium gluconate and atlapulgite, with 20 mesh sieves are crossed after grinding crusher machine, are stirred until homogeneous, and the first powder is obtained；The
One powder as de-plugging agent main component；
2nd, by potassium peroxydisulfate, hydroxysuccinic acid amine, sodium salicylate and hexamethylenetetramine, stirred with cone blender
40 minutes, to uniform, then cross 20 mesh sieves, and the second powder is obtained；Second powder is used as solvay-type supporting surfactant powder；
3rd, by vanadic anhydride and the starch of 1.5kg, with cone blender to uniform, 40 mesh sieves are then crossed, is obtained
3rd powder；3rd powder is used as Catalyst Adsorption powder；
4th, by the starch of 2.5kg, α-sulfonic acid monocarboxylic acid and its derivative and diethylaluminum ethoxide, stirred with cone blender
40 minutes are mixed to uniform, 20 mesh sieves are then crossed, the 4th powder is obtained；4th powder is as excellent emulsibility, permeability and divides
Dissipate property and good biological degradability；
5th, obtained first powder, the second powder, the 3rd powder are mixed with the 4th powder, is stirred, be made oil field
Producing well neutral de-plugging agent.
Embodiment 2, raw material is weighed by following components and weight：Poly-epoxy succinic acid amine 14Kg, second diene pentaacetic acid
Amine 35Kg, hydroxysuccinic acid amine 33Kg, poly amic acid 23Kg, poly (sodium aspartate) 10Kg, sodium gluconate 13Kg, activity are white
Native 13Kg, potassium peroxydisulfate 25Kg, hydroxysuccinic acid amine 9Kg, sodium salicylate 6Kg, hexamethylenetetramine 9Kg, by vanadic anhydride
0.25Kg, starch 3Kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) 7Kg and diethylaluminum ethoxide 0.2Kg.
The raw material of above-mentioned parts by weight is prepared into oil well neutral de-plugging agent composition according to following preparation methods：
1st, with embodiment 1；
2nd, with embodiment 1；
3rd, by vanadic anhydride and the starch of 1kg, with cone blender to uniform, remaining same embodiment 1；
4th, by the starch of 2kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) and diethylaluminum ethoxide, mixed with taper
Machine is stirred 40 minutes to uniform, remaining same embodiment 1
5th, with embodiment 1.
Embodiment 3, raw material is weighed by following components and weight：Poly-epoxy succinic acid amine 10Kg, second diene pentaacetic acid
Amine 36Kg, hydroxysuccinic acid amine 35Kg, poly amic acid 20Kg, poly (sodium aspartate) 8Kg, sodium gluconate 14Kg, activity are white
Native 15Kg, potassium peroxydisulfate 20Kg, hydroxysuccinic acid amine 11Kg, sodium salicylate 4Kg, hexamethylenetetramine 6Kg, by vanadic anhydride
0.2Kg, starch 2Kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) 5Kg and diethylaluminum ethoxide 0.15Kg.
The raw material of above-mentioned parts by weight is prepared into oil well neutral de-plugging agent composition according to following preparation methods：
1st, with embodiment 1；
2nd, with embodiment 1；
3rd, by vanadic anhydride and the starch of 1kg, with cone blender to uniform, remaining same embodiment 1；
4th, by the starch of 1kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) and diethylaluminum ethoxide, mixed with taper
Machine is stirred 40 minutes to uniform, remaining same embodiment 1
5th, with embodiment 1.
Embodiment 4, raw material is weighed by following components and weight：Poly-epoxy succinic acid amine 12Kg, second diene pentaacetic acid
Amine 40Kg, hydroxysuccinic acid amine 37Kg, poly amic acid 24Kg, poly (sodium aspartate) 7Kg, sodium gluconate 11Kg, activity are white
Native 10Kg, potassium peroxydisulfate 22Kg, hydroxysuccinic acid amine 10Kg, sodium salicylate 7Kg, hexamethylenetetramine 5Kg, by vanadic anhydride
0.2Kg, starch 5Kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) 7Kg and diethylaluminum ethoxide 0.1Kg.
The raw material of above-mentioned parts by weight is prepared into oil well neutral de-plugging agent composition according to following preparation methods：
1st, with embodiment 1；
2nd, with embodiment 1；
3rd, by vanadic anhydride and the starch of 2kg, with cone blender to uniform, remaining same embodiment 1；
4th, by the starch of 3kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) and diethylaluminum ethoxide, mixed with taper
Machine is stirred 40 minutes to uniform, remaining same embodiment 1
5th, with embodiment 1.
Embodiment 5, raw material is weighed by following components and weight：Poly-epoxy succinic acid amine 13Kg, second diene pentaacetic acid
Amine 37Kg, hydroxysuccinic acid amine 36Kg, poly amic acid 25Kg, poly (sodium aspartate) 8Kg, sodium gluconate 12Kg, activity are white
Native 12Kg, potassium peroxydisulfate 23Kg, hydroxysuccinic acid amine 9Kg, sodium salicylate 5Kg, hexamethylenetetramine 8Kg, by vanadic anhydride
0.28Kg, starch 3.5Kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) 8Kg and diethylaluminum ethoxide 0.3Kg.
The raw material of above-mentioned parts by weight is prepared into oil well neutral de-plugging agent composition according to following preparation methods：
1st, with embodiment 1；
2nd, with embodiment 1；
3rd, by vanadic anhydride and the starch of 1.2kg, with cone blender to uniform, remaining same embodiment 1；
4th, by the starch of 2.3kg, α-sulfonic acid monocarboxylic acid and its derivative（MES) and diethylaluminum ethoxide, mixed with taper and stirred
Machine is mixed to stir 40 minutes to uniform, remaining same embodiment 1
5th, with embodiment 1.
Claims (2)
1. a kind of oil well neutral de-plugging agent composition, it is characterised in that be made up of the raw material of following portions by weight：Polycyclic
10~14 parts of oxydisuccinic acid ammonium, 35~40 parts of second diene pentaacetic acid ammonium, 33~37 parts of hydroxysuccinic acid ammonium, poly amic acid
20~25 parts, 7~10 parts of poly (sodium aspartate), 10~14 parts of sodium gluconate, 10~15 parts of atlapulgite, potassium peroxydisulfate 20~
25 parts, 9~11 parts of hydroxysuccinic acid ammonium, 4~7 parts of sodium salicylate, 5~9 parts of hexamethylenetetramine, vanadic anhydride 0.2~0.3
Part, 2~5 parts of starch, α-sulfonic acid monocarboxylic acid and its 0.1~0.3 part of 5~8 parts of derivative and diethylaluminum ethoxide.
2. the method for preparing the oil well neutral de-plugging agent composition described in claim 1, it is characterised in that including following
Step：
A, by poly-epoxy succinic acid ammonium, second diene pentaacetic acid ammonium, hydroxysuccinic acid ammonium, poly amic acid, poly-aspartate
Sodium, sodium gluconate and atlapulgite, with 20 mesh sieves are crossed after grinding crusher machine, are stirred until homogeneous, and the first powder is obtained；
B, by potassium peroxydisulfate, hydroxysuccinic acid ammonium, sodium salicylate and hexamethylenetetramine, stir 40 points with cone blender
Clock then crosses 20 mesh sieves to uniform, and the second powder is obtained；
C, by vanadic anhydride and 1~2 part of starch, with cone blender to uniform, then cross 40 mesh sieves, be obtained the 3rd
Powder；
D, by 1~3 part of starch, α-sulfonic acid monocarboxylic acid and its derivative and diethylaluminum ethoxide, stirred with cone blender
40 minutes, to uniform, then cross 20 mesh sieves, and the 4th powder is obtained；
E, the first powder, the second powder, the 3rd powder by obtained in mix with the 4th powder, stir, and are made oil extraction in oil field
Well neutral de-plugging agent.
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| CN104650847A (en) * | 2015-02-13 | 2015-05-27 | 兰州新星中性清洗技术有限公司 | Oilfield exploitation neutral fracturing fluid and preparation method thereof |
| CN104694112A (en) * | 2015-02-13 | 2015-06-10 | 兰州熙瑞化工科技有限公司 | Oilfield exploitation stratum neutral fracturing fluid and preparation method thereof |
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| CN111040751A (en) * | 2019-11-22 | 2020-04-21 | 大庆石油管理局有限公司 | Non-flowback stratum blocking remover for oil extraction |
| CN111097383B (en) * | 2019-12-09 | 2022-05-31 | 辽宁科技大学 | V-shaped groove2O5Preparation method and application of coal tar pitch-based composite spherical activated carbon |
| CN113025294B (en) * | 2021-03-26 | 2022-02-01 | 大庆井升伟业油田技术服务有限公司 | Plugging-removing injection-increasing agent suitable for chemical flooding sewage reinjection well and process |
| CN113429951B (en) * | 2021-08-02 | 2023-02-28 | 浙江砉润科技有限公司 | Biomass pollution-free oilfield blocking remover |
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| CN102417208A (en) * | 2011-08-08 | 2012-04-18 | 江苏大学 | Mesoporous magnetic ferriferrous oxide, its preparation method and application |
| CN102516967B (en) * | 2011-12-02 | 2013-08-07 | 中国石油天然气集团公司 | Alkali/surfactant/polymer (ASP) flooding calcium-silicon-barium scale inhibitor and preparation method thereof |
| CN102875777B (en) * | 2012-09-28 | 2015-03-04 | 湖南大学 | Novel epoxy hardener and preparation method thereof |
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