CN104293333B - Neutral blocking remover composition for oilfield oil extraction and preparation method thereof - Google Patents
Neutral blocking remover composition for oilfield oil extraction and preparation method thereof Download PDFInfo
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- CN104293333B CN104293333B CN201410489268.6A CN201410489268A CN104293333B CN 104293333 B CN104293333 B CN 104293333B CN 201410489268 A CN201410489268 A CN 201410489268A CN 104293333 B CN104293333 B CN 104293333B
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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
Abstract
The invention relates to a neutral blocking remover composition for oilfield oil extraction, which is prepared from the following components in parts by weight: 30-35 parts of acrylic acid-methyl acrylate copolymer, 44-50 parts of diethylene triamine pentaacetic acid, 30-35 parts of sodium polyepoxysuccinate, 30-35 parts of amine malate, 10-14 parts of sodium alkyl sulfonate, 5-8 parts of amine hydroxy ethylidene diphosphate, 10-14 parts of hydrolyzed polyacrylamide, 12-17 parts of atlapulgite, 20-25 parts of sodium persulfate, 7-10 parts of sodium lignosulfonate, 5-8 parts of tannin, 12-16 parts of sodium malate, 5-8 parts of sodium sulfosuccinate, 5-8 parts of starch, 9-12 parts of methyl lactate, 0.2-0.3 part of vanadium pentoxide and 0.1-0.3 part of diisobutyl carbinol. The neutral blocking remover composition for oilfield oil extraction has the advantages of high blocking removal speed, no corrosivity due to neutrality and no dead area, can quickly dissolve the material scales, clean the oilfield stratum and remove blocking, and does not generate the phenomenon of precipitation or secondary blocking; and the cleaning waste liquid does not need to be subjected to sewage treatment after returning to the ground.
Description
Technical field
The present invention relates to the auxiliary agent that a kind of oil oil field uses, particularly a kind of oil field being applied to oil extraction in oil field use is adopted
Oily neutral de-plugging agent compositionss, the invention still further relates to the preparation method of oil extraction in oil field neutral de-plugging agent compositionss.
Background technology
The effective means that water flooding is to maintain strata pressure and improves recovery ratio, for widely used both at home and abroad.
But in the injecting process, causing the original balance of oil reservoir to be destroyed, the various reservoir injury problems thereby resulting in also come one after another.Oil
Layer fouling is the common type of reservoir injury during waterflooding extraction.The main reason of oilfield scaling is to note during oil extraction in oil field
Enter water to be incompatible with stratum water, lead to the scaling cations injecting in contained one-tenth dirt anion, with stratum water in water to meet and
Produce precipitation, and be deposited in oil reservoir and producing well and gathering line in, define foulant.Especially at water filling inlet by
Larger in hole, stratum hydropexis is many, and injection water is many through excess, and fouling is also more, and foulant is from entrance to outlet abundance
Descending.The precipitation of foulant is so that original macrovoid becomes little venturi, and the original little venturi overwhelming majority is complete
Full blocking.The druse growing in big passage originally is so that fluid is subject to larger resistance in advance, and makes rock permeability big
Width declines and has a strong impact on the harvesting of crude oil.
The use of ternary composite displacement system also results in formation scaling and blocking.In the original stratum water in oil field, containing calcium
Ion, magnesium ion and iron ion, these polyvalent metal ions are the dominant cation of composition dirt, and inject the mineralizer of oil-reservoir water
It is below the concentration of original reservoir water, in the presence of cation exchange, these polyvalent metals with the concentration of calcium ion, magnesium ion
It is little that the content of ion reduces amplitude.And in alkaline surfactant polymer flooding oil-field technology, add highly basic NaOH, the pH making oil reservoir is by neutrality
Sharply rise to 12～14, in the higher pH environment of here, occur in oil-reservoir water Calcium Carbonate, magnesium carbonate, calcium silicates, magnesium silicate and
The inorganic salts dirt of Sulfateses.In addition the oil carbonate surface activity also containing higher concentration in ternary composite displacement system
Polyvalent cation in agent and polyacrylamide flocculant, with stratum water reacts, and generates water-fast bivalence oil sulphur
Sour calcium（Magnesium）Salt dirt, polyacrylamide flocculant is also easily polymerized to the polymerization jelly dirt of organic materials dirt.Therefore, these nothings
Machine salt dirt, the petroleum-sulfonate dirt of surfactant and polymer material dirt necessarily damage to reservoir rock mineral, very
To being grievous injury, the fouling products of generation can cause to formation oil discharge orifice gap and venturi blocking, the extraction of impact crude oil.
In order to mitigate above-mentioned harmful effect, at present, main using acidifying de-plugging, acidifying de-plugging easily produces dirty slag and secondary
Precipitate, generation is secondary to block producing well and stuck oil well pump；Also can be because of the corrosion inhibiter inefficacy in acidization, corrosion inhibiter breast
The factors such as inequality or misoperation of changing cause corrosion etc. to oil production equipment.
Content of the invention
It is an object of the invention to provide a kind of oil extraction in oil field neutral de-plugging agent compositionss, the present invention also provides oil extraction in oil field
The preparation method of neutral de-plugging agent compositionss.De-plugging agent of the present invention is fast to oil field stratum De-plugging speed, neutrality is corrosion-free, energy is quick
Dissolving various materials are dirty, realize corrosion-free safe de-plugging.
To achieve these goals, the technical scheme that the present invention takes is as follows：A kind of oil extraction in oil field neutral de-plugging agent combination
Thing is it is characterised in that it is made up of following components and parts by weight：30～35 parts of copolymer of acrylic acid and methyl acrylate, second two
44～50 parts of alkene pentaacetic acid amine, 30～35 parts of polyepoxy sodium succinate, 30～35 parts of hydroxyl succinic acid amine, allyl sulphonic acid
10～14 parts of sodium, 5～8 parts of hydroxy ethylidene-diphosphate amine, 10～14 parts of hydrolyzed polyacrylamide, 12～17 parts of active hargil,
20～25 parts of sodium peroxydisulfate, 7～10 parts of sodium lignin sulfonate, 5～8 parts of tannin, 12～16 parts of hydroxyl succinic acid sodium, amber acid ester
5～8 parts of sodium sulfonate, 5～8 parts of starch, 9～12 parts of methyl lactate, 0.2～0.3 part of vanadic anhydride and diisobutyl carbinol (DIBC) 0.1
～0.3 part.
The method that the component of above-mentioned parts by weight is prepared into oil extraction in oil field neutral de-plugging agent compositionss comprises the steps：
1st, by 30～35 parts of copolymer of acrylic acid and methyl acrylate, 44～50 parts of second diene pentaacetic acid amine, polycyclic oxygen
30～35 parts of sodium succinate, 30～35 parts of hydroxyl succinic acid amine, 10～14 parts of sodium allylsulfonate, hydroxy ethylidene-diphosphate amine
5～8 parts, 10～14 parts of hydrolyzed polyacrylamide and 10～14 parts of active hargil, are crushed with grinder, stir after crossing 20 mesh sieves
Mix 40 minutes to uniform, first powder is obtained；First powder is as the main component of de-plugging agent in oil extraction in oil field；
2nd, by 20～25 parts of sodium peroxydisulfate, 7～10 parts of sodium lignin sulfonate, 5～8 parts of tannin, hydroxyl succinic acid sodium 12～
16 parts with 5～8 parts of amber acid ester sodium sulfonate, with cone blender mix and blend 40 minutes to uniform, cross 20 mesh sieves and be obtained
Second powder；Second powder is as the solvay-type supporting surfactant of de-plugging agent in oil extraction in oil field；
3rd, by 0.2～0.3 part of vanadic anhydride and 2～3 parts of active hargil, 40 minutes are stirred extremely with cone blender
Uniformly, so that vanadic anhydride is fully adsorbed with active hargil carrier, cross 40 mesh sieves and threeth powder is obtained, the 3rd powder is as oil field
The catalyst of de-plugging agent in oil recovery；
4th, by 5～8 parts of starch, 9～12 parts of methyl lactate and 0.1～0.3 part of diisobutyl carbinol (DIBC), use tapered mix and blend
Machine stirs 40 minutes, crosses 20 mesh sieves and fourth powder is obtained；4th powder is as the solid cleaning infiltration made for carrier with starch
Agent；
5th, by the first powder being obtained, the second powder, the 3rd powder and the mixing of the 4th powder, stir and make oil field
Oil recovery neutral de-plugging agent.
The oil extraction in oil field neutral de-plugging agent compositionss that the present invention provides, its outward appearance is colourless or slight yellowish powder, grain
Degree is a diameter of to be less than 20 mesh, and water content is less than 6%, and bulk specific weight is 1.03～1.12g/cm3, pH is 6～7, and rate of corrosion is less than
0.1g/(m2.h)；During oil field stratum de-plugging, it is configured to the water of mass percent concentration 2～5% according to dirt chocking-up degree water
Solution carries out de-plugging, and the present invention has carried out application test in middle oil Karamay oilfield, with 10Mpa high-pressure pump by mass percent
The aqueous solution of concentration 2～5% present invention is injected in oil extraction in oil field stratum, under the conditions of 55 DEG C of oil field stratum temperature, with carbonic acid
There is chemical reaction in calcium, carbonic acid magne-scale and ternary composite driving polymer material dirt etc., complete oil field stratum cleaning within 24 hours
De-plugging, after de-plugging, oil extraction in oil field rate has reached the designed capacity of producing well.
The present invention provide oil extraction in oil field neutral de-plugging agent compositionss, can effectively solving oil field stratum cleaning de-plugging and
The etching problem of oil production equipment, and de-plugging agent and sandstone response speed can be controlled, and generate pastel, improve the infiltration on stratum
Rate, prevents the pollution to stratum, improves the recovery ratio of crude oil.Fast to oil field stratum De-plugging speed, neutral corrosion-free, can be instant soon
Solution various materials dirt, Pitch deposits dirt, carbonate scale, silicate scale and sulfate scale, the waste liquid of cleaning de-plugging has from fall
Xie Xing, need not carry out sewage disposal in the row of returning ground.Cleaning oil field stratum de-plugging, corrosion-free, no dead angle, do not produce precipitation and secondary
Stifled well phenomenon, de-plugging process time is less than 24 hours, reaches corrosion-free safe de-plugging, than traditional pickling de-plugging, biological solution
Block up and solvent de-plugging safety and reliability.
The Main Function of each component of the present invention and application mechanism are as described below：
1st, copolymer of acrylic acid and methyl acrylate：It is the copolymerization being participated in polyreaction by two or more monomers.
Therefore, change molecular chain structure, improve the distribution situation of polymers function group, also have impact on its relative molecular weight and divide
Cloth situation, copolymerization have also been introduced the functional group of different performance, and this just compensate for the single functional group deficiency of itself, Liang Zhong functional group
It is on same macromolecular chain, in function characteristic, can maximize favourable factors and minimize unfavourable ones, jointly play synergism, reach collaborative increasing
The purpose of effect.
2nd, second diene pentaacetic acid amine：It is a kind of important amino chelating agent, calcium, magnesium, ferrum incrustation ion are had very strong
Complexing, especially especially strong to the complexing power of high volence metal ion, molten dirt effect is good, during with complexometry descaling and blockage relieving,
Effect is better than EDETATE SODIUM salt and EDTA ammonium salt, can be miscible with all components in this de-plugging agent, has the component of complexing with other
Synergy can be played, improve De-plugging speed and effect.
3rd, polyepoxy sodium succinate：Polyepoxy sodium succinate used in this de-plugging agent, it is by the chemical combination of five to six rings
Thing forms, and does not result in environmental accumulation, polluted-water, biological degradability is good after de-plugging, is that we pass through molten dirt test choosing in a large number
The complexing of metal ion agent selected.We prove through de-plugging research evaluation result：Polyepoxy sodium succinate is generated with metal ion
During complex, it is usually formed multiple complexing rings.The more, the stability of complex is higher, joins for number in one complex molecules
The more, the complex that ligand is formed with complexing of metal ion is just more steady for the complexing ring being formed when position body is with complexing of metal ion
Fixed.Polyepoxy sodium succinate has multiple complexing rings, and can simultaneously with many metal ions such as Ca2+、Mg2+、Fe3+、Fe2+、
Ba2+And Sr2+Plasma produces Complex effect, generates the stable complex with higher solubility, stops these particles and phase
The acid group answered combines, and prevents to precipitate, thus effectively preventing the secondary precipitate blocking oil field ground after the molten dirt of de-plugging agent
The capillary tube of layer and trunnion.Meanwhile, polyepoxy sodium succinate also has good corrosion inhibition, the oxygen in its molecular polarity group
Atom, has unshared electron pair, can become adsorption site adsorbing metal and form five-membered cyclic compound with metal, and adsorb
On metal surface, form one layer of fine and close protecting film along metal surface, thus playing the effect of inhibition protection oil production equipment.
4th, hydroxyl succinic acid amine：A kind of chelating agent containing multiple hydroxyls and amido, can with calcium metal, magnesium, ferrum etc. from
Son forms complex soluble in water, can be used for removing the various ferric oxide product of metal erosion, can with this de-plugging agent other
All components compatibility, and there is preferable inhibition and permeability, safety non-toxic.
5th, sodium allylsulfonate：It is intended for the main constitutive material of the de-plugging agent of oil extraction in oil field pump, have good
Anti-corrosive properties, dispersibility, antistatic behaviour and intermiscibility, and the precipitate of cleaning process generation can be removed, safe and reliable, can have
Molten dirt during de-plugging that eliminates of effect remains the dirty phenomenon of bulk, it is to avoid because of deposition and the de-plugging of secondary stuck oil well pump of block greatly dirt
Accident.
6th, hydroxy ethylidene-diphosphate amine：It is a kind of chelating agent, have good corrosion-and-scale-inhibiting property, can be with bivalent metal ion
Act on metal surface and form deposition protecting film；Corrosion inhibition rate reaches more than 95%, can react generation with the many kinds of metal ions in incrustation scale
Hexatomic ring complex, especially can form complex soluble in water with calcium, magnesium ion.And can coordinate with this de-plugging agent all components
Use, there is cooperative effect, improve plugging removal effect.
7th, hydrolyzed polyacrylamide：PH value shows neutral, soluble dispersion in water, facile hydrolysiss, because hydrolysis degree is different, greatly
In strand, the content of hydroxyl and amide groups is also different, and the larger carboxyl-content of hydrolysis degree is high, as oil pump de-plugging
During agent, effect is good.
8th, active hargil：It is mainly used in refinery products（Lubricating oil, paraffin, vaseline）.For various mineral oil, food
Decolorizing and refining and gas, liquid dried dehydration with vegetable oil, animal oil, hard paraffin, fatty acid, ethanol and benzene etc..It is used as
The catalyst of chemical industry and powder pesticide filler.Active hargil is in this de-plugging agent as abluent, chelating agent, penetrating agent system
Make the carrier of pressed powder.
9th, sodium peroxydisulfate：Sodium peroxydisulfate is largely used to abluent, etching and the oil drilling of metal, and underground work is in room temperature
Just it is decomposed into free radical down, there is strong oxidizing property, to calcium carbonate scale, carbonic acid magne-scale, there is Scavenging activity.For ternary oil displacement
The polymer material dirt that system produces, has good oxidative cleavage and dissolution.
10th, sodium lignin sulfonate：A kind of complicated aromatic compound of composition, have polydispersity uneven cloudy from
Sublayer, the electrolyte of degradable, non-secondary pollution, is a kind of promising green de-plugging agent component, it contains hydroxyl, methoxy
Base, aldehyde radical and carboxyl, have the group of many because it is rich in, so it also can be able to lead to the complexing of metal ion of indissoluble material
The inductive effect crossing phenolic hydroxyl group makes the alpha -carbon atom of para-position side chain activate, and strengthens its respond.Therefore, by chemical reaction energy
More phenolic hydroxyl groups are separated out on lignin molecule, protects already present free phenolic hydroxyl group to avoid condensation as far as possible, will improve
Lignin reaction's activity；Phenolic or non-phenolic lignin structure unit all have compared with extensive chemical respond.
11st, tannin：Tannin belongs to polyhydric phenols, containing substantial amounts of hydroxyl and carboxyl, so that it is had and Ca2+、Mg2 +、Fe2+And Fe3+There is very strong complexing power, particularly with Ca2+And Mg2+Complexation can become the very big complex of dissolubility, stop solution
The precipitation at the microgranule dirt end of blocking agent dissolving.Tannin also has corrosion inhibiting ability, can be formed in oil extraction pump and flow string metal surface and cause
Close protecting film, protecting film is the network structure being made up of tannin molecule and ferric iron, containing α-Fe2O3Structure.
12nd, hydroxyl succinic acid sodium：A kind of chelating agent containing multiple hydroxyls and amido, can with calcium metal, magnesium, ferrum etc. from
Son forms complex soluble in water, can be used for removing the various ferric oxide product of metal erosion, can with this de-plugging agent other
All components compatibility, and there is preferable inhibition and permeability, safety non-toxic.
13rd, amber acid ester sodium sulfonate：It is a kind of double fat sulfonate of succinic acid, be excellent industry cleaning link wetting agent, ooze
Agent thoroughly.It is to be obtained by the monoester hydrocarbon sulfonation that fatty alcohol-polyoxyethylene ether and fatty monoethanol amide are generated with maleic anhydride
Product.Because of raw material sources fully, low production cost, using effect is good, does not produce the three wastes, belongs to environmental protection raw material.
14th, starch：Starch is that natural materials source is wide, cheap, pollution-free.Starch be to be shunk by many glucoses and
Become, it contains many hydroxyls, and these hydroxyls also have complexing.In this de-plugging agent, starch is used to what absorption was added
The carrier of surfactant, so that the product making solid powdery after liquid adsorption.
15th, methyl lactate：It is important aromatic series intermediate and Organic Chemicals, as medical, agriculture intermediate,
And can be used as solvent, abluent, penetrating agent etc..It has preferable temperature expression range, can be compatible with water and organic system, Yi Sheng
Thing is degraded, and can replace most of halogen He poisonous solvents.
16th, vanadic anhydride：Vanadic anhydride in this agent as catalyst, in oil field stratum and oil well petroleum pipeline
The deposition dirt of bivalence sulfonate is reacted with the polybasic carboxylic acid amine salt in this de-plugging agent, in the effect of the catalyst of vanadic anhydride
Under, generate metal carboxylate micromolecular compound soluble in water.
17th, diisobutyl carbinol (DIBC)：It is a kind of defoamer, there is the rapid foam eliminating the generation of oil field stratum de-plugging process and make
With, its surface tension is relatively low, and easy absorption spreads on the liquid film of foam, after defoamer is sprawled and is adsorbed on bubble film,
The local surface tension that liquid film can be made reduces, and takes away neighbouring liquid under liquid film simultaneously and leads to thinning of liquid film to rupture.This defoamer
Liquid film is sprawled quickly, very book, can rapid froth breaking, do not regenerate foam during de-plugging.
The oil extraction in oil field neutral de-plugging agent compositionss mechanism that the present invention provides：In recent years, rapid along with China's economy
Development, problem of environmental pollution becomes increasingly conspicuous, and living environment quality progressively declines, or even has badly influenced the life water of the people
Flat, healthy and production is movable.In the face of this serious realistic problem, the present invention uses Green Chemistry Theory and technology, choosing
With the production process that nontoxic development of raw materials green synthesis process and creation are environmentally friendly.And, product of the present invention exists
During oil field stratum de-plugging, nontoxic to operator and oilfield environment.
1st, neutral de-plugging agent dissolves incrustation scale by ion compatibility
During oil extraction in oil field, water flood recovery causes the factor of producing well and oil extraction pump fouling a lot, but as long as having
HCO3 -、CO3 2-、SiO3 2-、SO4 -Etc. anion, and Ca 2+、Mg 2+、Ba 2+、Sr 2+Etc. cation presence it is possible to formed
CaCO3、MgCO3、CaSiO3、MgSiO3、CaSO4、MgSO4、BaSO4、SrSO4Deng precipitation.Endogenous cause of ill is the basis of change, and exopathogenic factor is to become
The condition changed, exopathogenic factor passes through interior thus work.And the change of the physical chemical factor such as temperature, pressure, pH value is exopathogenic factor, such as
The cation of dirt and anion complexometry can be generated water miscible complex by fruit, or the cation dirt and anion
It is changed into being dissolved in the compound of water by ion compatibility, just solve the problems, such as the de-plugging of oil field stratum and producing well.
The complexing ring being formed when compatibility body and complexing of metal ion is more, and compatibility body is more with complexing of metal ion quantity,
In system, the increase of entropy is more, and Complex effect is more notable, and the stability of complex is also higher.And the higher complexation of stability
Thing, cleaning and descaling de-plugging performance is better.Such as polyepoxy sodium succinate component in this agent has multiple complexing rings, and permissible
Producing Complex effect with many bivalent metal ions simultaneously, generating the stable complex with higher solubility, thus reaching
The purpose of de-plugging.
2nd, complexation descaling and blockage relieving mechanism
Anion in oil extraction in oil field neutral de-plugging agent, amine ion isoreactivity group and carbonate scale, silicate scale, sulphuric acid
Salt crust reaction generates pastel, and complexing of metal ion is changed into aqua complex soluble in water, thus playing de-plugging effect.
This kind of complex reaction is not stoichiometrically carried out, but carries out according to chemical molecular ratio, generally often several grams to tens grams of complexation
De-plugging agent, just can dissolve the salt dirt of the metal ions such as a few hectogram calcium, magnesium.Even if that is, very low in de-plugging agent consumption
In the case of, also can be with substantial amounts of complexing of metal ion, this effect is referred to as low dose effect.
3rd, the impact of complex structure
The structure of complex and property determine the size of complexing ring in formed complex, quantity and sterically hindered
（Refer mainly to some atoms in molecule or group is closer to each other and the steric restriction effect that causes）Deng these factors are to chelating agent
Stability influence is very big.Prove through lot of experiments, have five to the stability highest of the compound of six rings, wherein, have
Pentacyclic Stability of Metal Complexes highest.And when there being double bond in complexing ring, the complex of hexatomic ring is the most stable.Have and necessarily gather
C in right polyepoxy sodium succinate and dirta 2+、Mg 2+、Fe 2+、Fe 3+The complex being formed Deng complexing of metal ion has five yuan
Ring or six-membered ring structure.Complexing ring quantity in one complex molecules is more, and the stability of complex is higher.Polycyclic oxygen amber
When Meticortene Solu-Delta-cortef generates complex with metal ion, it is usually formed multiple complexing rings, therefore, this complex is highly stable, complexation solution
Stifled effect is better.
4th, dissolve peptizaiton
Macromolecular complex thing in this de-plugging agent has dissolving and peptizaiton, and these powered macromole component absorption exist
The surface of dirt forms electric double layer, and dirty profile " parcel " is got up, and changes the original charge condition in dirty surface, increases between granule
Electrostatic repulsion, it is to avoid the secondary deposition of dissolving dirt, enable the dirt being cleaned by dissolving stably to be in the dispersed of pastel
State, with water flowing, thus avoid precipitating hole and the venturi that dirty slag blocks oil field stratum.
5th, the descaling and blockage relieving mechanism to ternary composite driving dirt
In order to improve oil extraction in oil field rate, promote the application of alkaline surfactant polymer flooding oil-field technology, in ternary composite driving, due to joining
Contain alkali, surfactant and polyacrylamide in side, make the injection and extraction system of combination flooding produce fouling, cause the hole of oil field stratum
Gap and the blocking of trunnion.This reacts with the high valence ion in rock and stratum water mainly due to alkali, in suitable pressure, temperature
Under the conditions of degree, ion composition and pH, deposition generates inorganic salt crust.Dirt formed in ternary composite driving mainly has：Calcium Carbonate,
Magnesium carbonate, calcium hydroxide, magnesium hydroxide, calcium silicates, magnesium silicate etc., also have sulfate scale of barium and strontium etc. sometimes.Meanwhile, by
Conventional petroleum sulfonate in ternary composite driving, in high-valence cationic aqueous solution, precipitation generates bivalence sulfonic acid salt crust and gathers
The polymer material dirt that acrylamide produces, these organic materials dirts condense together and define gluey organic deposition, seriously block
Formation pore, causes oil flow resistance big, or even passage is blocked, significantly limit the harvesting of crude oil.This de-plugging agent utilizes " pole
Similar temperament mixes " principle, with polar group-OH ,-CONH2、-ONaLive with multiple complex containing highly polar group and surface
Property agent.As the copolymer of acrylic acid and methyl acrylate in this agent, second diene pentaacetic acid amine, hydroxyl succinic acid amine, pi-allyl
Sodium sulfonate, hydroxy ethylidene-diphosphate amine and sodium peroxydisulfate and various surfactant, occur molten under complexation, scattered effect
Solution, completes the dissolving of the inorganic salt crust of oil field stratum under free from corrosion cleaning and descaling working condition, is changed into network soluble in water
Compound is hydrated salt.For organic materials dirt, then aoxidize, chain rupture, coordination, conversion, ultimately produce soluble in water little point
Sub- solution, to reach the purpose of oil field stratum de-plugging.
6th, the impact to environment for this de-plugging agent and its Study on compatibility
With industrial high development, the environmental pollution of global property and ecological disruption are increasingly serious, and environmental protection has been carved not
Rong Huan.As the de-plugging agent of specialty chemicals, its development strategy requires consistent with the Green Chemistry of environmental requirement.Oilfield chemistry
The general thought of the de-plugging agent research of product is, fundamentally de-plugging, eliminates polluter, and makes no longer to contain pollution in de-plugging waste liquid
Thing.Therefore, the Chemical composition that of this de-plugging agent should ensure that each component is all efficient to greatest extent, and makes other components
Produce synergy as much as possible, consumption is few, scale removal is thorough, efficient de-plugging to reach, and to the liquid after oil field stratum de-plugging
Body need not the row's of returning floor treatment, environmentally safe.
Details are as follows for the beneficial effect of the oil extraction in oil field neutral de-plugging agent compositionss that the present invention provides：
1st, neutral de-plugging agent can complete oil field stratum de-plugging by one-step method
This neutral de-plugging agent is by copolymer of acrylic acid and methyl acrylate, second diene pentaacetic acid amine, poly-epoxy succinic acid
Sodium, hydroxyl succinic acid amine, sodium allylsulfonate, hydroxy ethylidene-diphosphate amine, hydrolyzed polyacrylamide, sodium peroxydisulfate, activity
Hargil, sodium lignin sulfonate, tannin, hydroxyl succinic acid sodium, amber acid ester sodium sulfonate and kinds of surface activating agent composition, de-plugging agent
PH be 6～7, without harmful ions such as mineral acid, organic acid, chloride ion and sulfate radicals, rate of corrosion is less than 0.1g (m2H),
Can reach corrosion-free safe de-plugging.Using this neutral de-plugging agent during oil field stratum de-plugging, can be in room temperature to 100 DEG C of conditions
Under, the chemical cleaning de-plugging to all kinds of incrustation scales is completed by one-step method, without neutralisation treatment and Passivation Treatment, improves de-plugging effect
Rate.
2nd, remove polymer material dirt and the asphalitine dirt that stratum ternary composite driving produces
This agent is sunk to the bivalence petroleum sulfonate being produced by surfactant in ternary compound oil drive system oil recovery process
The compound scale that the precipitations such as dirt, polyacrylamide polymers material dirt and Ferric oxide scale of forming sediment generate, in 24 hours, free from corrosion clear
Wash the chemically neutral descaling and blockage relieving completing oil field stratum under working condition.Oil field stratum studies on asphaltene dirt can be quickly dissolved in this agent
Tamper, makes penetrating agent of interpolation etc. be rapidly introduced into the inside of organic polymer material dirt, makes de-plugging agent and organic polymer material
The rapid contact of dirt, makes asphalitine dirt and polymer material dirt expand, convert, eventually forms the small molecule solution being easily soluble in water.
3rd, protection stratum support and capillary tube can safe de-pluggings
This neutral de-plugging agent by dredge pore constriction, recover reservoir permeability for the purpose of, to carbonate scale, silicate scale,
Sulfate scale and the cleaning de-plugging of surfactant dirt and polymer material dirt, have good complexing, permeability and lyotropy,
Can penetrate the deep of oil field stratum, de-plugging area is big, and reaction residue becomes pasty state, does not produce dirty slag and secondary precipitate etc.,
Make reservoir exempt from acid infringement, capillary tube is had reaming act on, protection stratum support.This de-plugging agent can solve the problem that hydrochloric acid and hydrogen fluorine
Acid reaction excessive velocities, solution cavity is big and short, be difficult to go deep into stratum and cleaning coverage short the problems such as, be the extraction of reservoir fluid
Form good passage, reduce additional capillary pressure, improve relative permeability and the tar productivity of oil.
4th, the waste liquid that de-plugging process produces is degradable, need not the row's of returning floor treatment
Because all components of this de-plugging agent are all former by degradable chelating agent, emulsifying agent, dispersant and oxidant etc.
There is chemical reaction in the dirt being cleaned in material composition, with oil field stratum, generate degradable small molecule salt, can reach underground
Oil reservoir is to the oil recovery quality of water quality and environmental requirement.Using this de-plugging agent to oil field stratum chemical plugging removal after, oil field stratum clean
The waste liquid of de-plugging need not earthward the row of returning be processed, and saves liquid waste processing operation and expense after cleaning de-plugging.
Specific embodiment
Embodiment 1, weighs raw material by following components and weight：Copolymer of acrylic acid and methyl acrylate 30kg, second diene three
Triamine pentaacetic acid amine 48kg, polyepoxy sodium succinate 32kg, hydroxyl succinic acid amine 30kg, sodium allylsulfonate 11kg, hydroxyl Asia second
Base diphosphonic acid amine 7kg, hydrolyzed polyacrylamide 14kg, active hargil 16kg, sodium peroxydisulfate 22kg, sodium lignin sulfonate 8kg, list
Peaceful 7kg, hydroxyl succinic acid sodium 15kg, amber acid ester sodium sulfonate 7kg, starch 7kg, methyl lactate 11kg, vanadic anhydride 0.3kg
With diisobutyl carbinol (DIBC) 0.2kg.
Above-mentioned raw materials are prepared into by the following method oil extraction in oil field neutral de-plugging agent compositionss：
1st, by copolymer of acrylic acid and methyl acrylate, second diene pentaacetic acid amine, polyepoxy sodium succinate, hydroxyl fourth
Two acid amides, sodium allylsulfonate, hydroxy ethylidene-diphosphate amine, hydrolyzed polyacrylamide and active hargil 13kg, use grinder
Crushed, stir 40 minutes after crossing 20 mesh sieves to uniform, first powder is obtained；First powder is as de-plugging agent in oil extraction in oil field
Main component；
2nd, by sodium peroxydisulfate, sodium lignin sulfonate, tannin, hydroxyl succinic acid sodium and amber acid ester sodium sulfonate, mixed with taper
Close blender mix and blend 40 minutes to uniform, cross 20 mesh sieves and second powder is obtained；Second powder is as de-plugging in oil extraction in oil field
The solvay-type supporting surfactant of agent；
3rd, by vanadic anhydride and active hargil 3kg, stir 40 minutes to uniform with cone blender, make five oxidations
Two vanadium are fully adsorbed with active hargil carrier, cross 40 mesh sieves and threeth powder is obtained, the 3rd powder is as de-plugging agent in oil extraction in oil field
Catalyst；
4th, by starch, methyl lactate and diisobutyl carbinol (DIBC), stirred 40 minutes with tapered mixing and blending machine, cross 20 mesh sieve series
Obtain the 4th powder, the 4th powder is as the solid cleaning penetrating agent made for carrier with starch；
5th, by the first powder being obtained, the second powder, the 3rd powder and the mixing of the 4th powder, stir and make oil field
Oil recovery neutral de-plugging agent.
Embodiment 2, weighs raw material by following components and weight：Copolymer of acrylic acid and methyl acrylate 35kg, second diene three
Triamine pentaacetic acid amine 46kg, polyepoxy sodium succinate 30kg, hydroxyl succinic acid amine 35kg, sodium allylsulfonate 14kg, hydroxyl Asia second
Base diphosphonic acid amine 8kg, hydrolyzed polyacrylamide 11kg, active hargil 12kg, sodium peroxydisulfate 22kg, sodium lignin sulfonate 7kg, list
Peaceful 6kg, hydroxyl succinic acid sodium 12kg, amber acid ester sodium sulfonate 5kg, starch 8kg, methyl lactate 10kg, vanadic anhydride 0.2kg
With diisobutyl carbinol (DIBC) 0.1kg.
Above-mentioned raw materials are prepared into by the following method oil extraction in oil field neutral de-plugging agent compositionss：
1st, by copolymer of acrylic acid and methyl acrylate, second diene pentaacetic acid amine, polyepoxy sodium succinate, hydroxyl fourth
Two acid amides, sodium allylsulfonate, hydroxy ethylidene-diphosphate amine, hydrolyzed polyacrylamide and active hargil 10kg, use grinder
Crushed, remaining same embodiment 1；
2nd, with embodiment 1；
3rd, by vanadic anhydride and active hargil 2kg, 40 minutes are stirred to uniform, remaining same enforcement with cone blender
Example 1；
4th, with embodiment 1；
5th, with embodiment 1.
Embodiment 3, weighs raw material by following components and weight：Copolymer of acrylic acid and methyl acrylate 33kg, second diene three
Triamine pentaacetic acid amine 44kg, polyepoxy sodium succinate 35kg, hydroxyl succinic acid amine 32kg, sodium allylsulfonate 10kg, hydroxyl Asia second
Base diphosphonic acid amine 6kg, hydrolyzed polyacrylamide 12kg, active hargil 14kg, sodium peroxydisulfate 25kg, sodium lignin sulfonate 10kg,
Tannin 8kg, hydroxyl succinic acid sodium 14kg, amber acid ester sodium sulfonate 6kg, starch 5kg, methyl lactate 12kg, vanadic anhydride
0.25kg and diisobutyl carbinol (DIBC) 0.3kg.
Above-mentioned raw materials are prepared into by the following method oil extraction in oil field neutral de-plugging agent compositionss：
1st, by copolymer of acrylic acid and methyl acrylate, second diene pentaacetic acid amine, polyepoxy sodium succinate, hydroxyl fourth
Two acid amides, sodium allylsulfonate, hydroxy ethylidene-diphosphate amine, hydrolyzed polyacrylamide and active hargil 12kg, use grinder
Crushed, remaining same embodiment 1；
2nd, with embodiment 1；
3rd, by vanadic anhydride and active hargil 2kg, 40 minutes are stirred to uniform, remaining same enforcement with cone blender
Example 1；
4th, with embodiment 1；
5th, with embodiment 1.
Embodiment 4, weighs raw material by following components and weight：Copolymer of acrylic acid and methyl acrylate 32kg, second diene three
Triamine pentaacetic acid amine 46kg, polyepoxy sodium succinate 31kg, hydroxyl succinic acid amine 30kg, sodium allylsulfonate 12kg, hydroxyl Asia second
Base diphosphonic acid amine 5kg, hydrolyzed polyacrylamide 10kg, active hargil 15kg, sodium peroxydisulfate 20kg, sodium lignin sulfonate 9kg, list
Peaceful 5kg, hydroxyl succinic acid sodium 16kg, amber acid ester sodium sulfonate 6kg, starch 6kg, methyl lactate 9kg, vanadic anhydride 0.25kg
With diisobutyl carbinol (DIBC) 0.25kg.
Above-mentioned raw materials are prepared into by the following method oil extraction in oil field neutral de-plugging agent compositionss：
1st, by copolymer of acrylic acid and methyl acrylate, second diene pentaacetic acid amine, polyepoxy sodium succinate, hydroxyl fourth
Two acid amides, sodium allylsulfonate, hydroxy ethylidene-diphosphate amine, hydrolyzed polyacrylamide and active hargil 13kg, use grinder
Crushed, remaining same embodiment 1；
2nd, with embodiment 1；
3rd, by vanadic anhydride and active hargil 2kg, 40 minutes are stirred to uniform, remaining same enforcement with cone blender
Example 1；
4th, with embodiment 1；
5th, with embodiment 1.
Embodiment 5, weighs raw material by following components and weight：Copolymer of acrylic acid and methyl acrylate 32kg, second diene three
Triamine pentaacetic acid amine 50kg, polyepoxy sodium succinate 34kg, hydroxyl succinic acid amine 31kg, sodium allylsulfonate 11kg, hydroxyl Asia second
Base diphosphonic acid amine 6kg, hydrolyzed polyacrylamide 12kg, active hargil 17kg, sodium peroxydisulfate 22kg, sodium lignin sulfonate 7kg, list
Peaceful 6kg, hydroxyl succinic acid sodium 13kg, amber acid ester sodium sulfonate 8kg, starch 8kg, methyl lactate 9kg, vanadic anhydride 0.2kg
With diisobutyl carbinol (DIBC) 0.3kg.
Above-mentioned raw materials are prepared into by the following method oil extraction in oil field neutral de-plugging agent compositionss：
1st, by copolymer of acrylic acid and methyl acrylate, second diene pentaacetic acid amine, polyepoxy sodium succinate, hydroxyl fourth
Two acid amides, sodium allylsulfonate, hydroxy ethylidene-diphosphate amine, hydrolyzed polyacrylamide and active hargil 14kg, use grinder
Crushed, remaining same embodiment 1；
2nd, with embodiment 1；
3rd, by vanadic anhydride and active hargil 3kg, 40 minutes are stirred to uniform, remaining same enforcement with cone blender
Example 1；
4th, with embodiment 1；
5th, with embodiment 1.
Claims (1)
1. a kind of oil extraction in oil field neutral de-plugging agent compositionss are it is characterised in that it is made up of following components and parts by weight：Propylene
30～35 parts of acid-methyl acrylate copolymer, 44～50 parts of second diene pentaacetic acid amine, polyepoxy sodium succinate 30～35
Part, 30～35 parts of hydroxyl succinic acid amine, 10～14 parts of sodium allylsulfonate, 5～8 parts of hydroxy ethylidene-diphosphate amine, hydrolysis are poly-
10～14 parts of acrylamide, 12～17 parts of active hargil, 20～25 parts of sodium peroxydisulfate, 7～10 parts of sodium lignin sulfonate, tannin 5
～8 parts, 12～16 parts of hydroxyl succinic acid sodium, 5～8 parts of amber acid ester sodium sulfonate, 5～8 parts of starch, 9～12 parts of methyl lactate, five
0.2～0.3 part of V 2 O and 0.1～0.3 part of diisobutyl carbinol (DIBC)；Its preparation method, it comprises the steps：
A, by 30～35 parts of copolymer of acrylic acid and methyl acrylate, 44～50 parts of second diene pentaacetic acid amine, poly- epoxy succinic
30～35 parts of sour sodium, 30～35 parts of hydroxyl succinic acid amine, 10～14 parts of sodium allylsulfonate, hydroxy ethylidene-diphosphate amine 5～8
Part, 10～14 parts of hydrolyzed polyacrylamide and 10～14 parts of active hargil, are crushed with grinder, stir 40 after crossing 20 mesh sieves
Minute, to uniform, is obtained the first powder；
B, by 20～25 parts of sodium peroxydisulfate, 7～10 parts of sodium lignin sulfonate, 5～8 parts of tannin, 12～16 parts of hydroxyl succinic acid sodium
With 5～8 parts of amber acid ester sodium sulfonate, with cone blender mix and blend 40 minutes to uniform, cross 20 mesh sieves and be obtained second
Powder；
C, by 0.2～0.3 part of vanadic anhydride and 2～3 parts of active hargil, stir 40 minutes to equal with cone blender
Even, so that vanadic anhydride is fully adsorbed with active hargil carrier, cross 40 mesh sieves and threeth powder is obtained；
D, by 5～8 parts of starch, 9～12 parts of methyl lactate and 0.1～0.3 part of diisobutyl carbinol (DIBC), stirred with tapered mixing and blending machine
Mix 40 minutes, cross 20 mesh sieves and fourth powder is obtained；
E, the first powder by being obtained, the second powder, the 3rd powder and the mixing of the 4th powder, stir and make oil extraction in oil field
Neutral de-plugging agent.
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| CN109439302A (en) * | 2018-12-06 | 2019-03-08 | 西安胜特油田技术服务有限责任公司 | A kind of preparation and technique of oil field neutral de-plugging agent |
| CN110144204A (en) * | 2019-07-02 | 2019-08-20 | 王豫园 | A kind of preparation method of the dedicated de-plugging agent of oilfield injection well |
| 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 |
| CN110951472A (en) * | 2019-12-09 | 2020-04-03 | 李国斌 | Biochemical combined-effect blocking remover and preparation method thereof |
| CN111410946A (en) * | 2020-04-03 | 2020-07-14 | 中国石油天然气集团有限公司 | Shale drilling auxiliary corrosion inhibitor, preparation and use methods thereof and mixed corrosion inhibitor |
| CN112410006A (en) * | 2020-11-16 | 2021-02-26 | 西安石油大油气科技有限公司 | Neutral blocking remover composition for oil extraction stratum of oil field and preparation method thereof |
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| CN115466610B (en) * | 2022-11-03 | 2023-02-21 | 海域泰和(山东)能源科技有限公司 | Oil displacement agent for improving recovery ratio of sandstone oil reservoir and preparation method and application thereof |
| CN115960594A (en) * | 2022-12-19 | 2023-04-14 | 新疆海辰油气技术有限责任公司 | Preparation method of blocking remover for oil production gas |
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