CN107523282A - A kind of acidifying turns to acid with high temperature resistant - Google Patents
A kind of acidifying turns to acid with high temperature resistant Download PDFInfo
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- CN107523282A CN107523282A CN201710862302.3A CN201710862302A CN107523282A CN 107523282 A CN107523282 A CN 107523282A CN 201710862302 A CN201710862302 A CN 201710862302A CN 107523282 A CN107523282 A CN 107523282A
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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
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
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Abstract
Acid is turned to high temperature resistant the invention discloses a kind of acidifying, includes the raw material of following percentage by weight：Technical hydrochloric acid 32.2~75.5%, beet alkali surface activator 3.0~8.0%, corrosion inhibiter 1.0~4.0%, ferrous stability 1.0~3.0%, high-temperature stabilizer 0.01~0.2%, organic acid 4.0~6.0%, surplus are water.High-temperature stabilizer of the present invention associates with beet alkali surface activator, form supermolecule, organic acid is then by delaying the acid-rock reaction speed under high temperature, avoid beet alkali surface activator is too fast because acid concentration declines from causing the reconstruction scope small, it can also increase acid solution penetration range simultaneously, organic acid can also act synergistically with corrosion inhibiter reduces corrosion rate, so as to ensure that turn to acid still has higher viscosity and relatively low corrosion rate at high temperature, therefore, the present invention can under high temperature (150 180 DEG C) normal work, use range it is wide.
Description
Technical field
The invention belongs to oil gas development technology field, it is related to acidification, and in particular to a kind of acidifying is turned to high temperature resistant
Acid.
Background technology
Acidification is one of important measures of well production increment augmented injection, and it is by stifled in acid solution corrosion blowhole
The some mineral compositions of plug thing or basement rock in itself, so as to improve the connectedness in rock interior duct, the pollution on stratum is released, improved
Profit capacity of well.It is that acidizing treatment is successfully crucial that acid solution, which is put,.Matrix acidifying is mainly the pollution for removing nearly well band,
Expand the oil flow channel of less permeable layer, in order that acidification reaches the yield or injection rate of expected purpose-increase oil gas,
The problem of first having to resolve is when injecting acid solution, and acid solution can be made to be uniformly distributed along processing well section.However, along reservoir thickness
Pollution and injury are typically in uneven distribution.Further, since the anisotropism between reservoir, the permeability difference of each layer is outstanding
Very, especially the Oil/gas Well in waterflooding extraction later stage, water flood recovery make each layer permeability further increase.So in full well acidizing,
If do not taken shunting measure, most of acid solution will tend to high permeability zone and miss, so as to reduce acidizing effect.
At present, acid solution shunting mainly uses two class methods：Machinery shunting and chemistry shunting.Mechanical means (including lower packing
Device and blocking ball) it is that acid solution puts most efficient method, but the shortcomings that this method complex operation, it is impossible to generally use, and change
Credit Flow Technique is easy to use, success rate is high, at the scene using more.Wherein, chemical particle dividing technology is added in acid solution
Enter a kind of chemical particle, during injection, these particulates form the very small filter cake of permeability in processing aspect, are adjusted by filter cake
Save the injectability of each layer.Injectability is strong when high permeability zone starts, and filter cake is formed soon, and resistance increase is fast, make interlayer difference by
It is decrescence small, it is finally reached and uniformly enters acid.Chemical particle shunting, which can be realized, is once acidified while unties the effect that each layer injury blocks
Fruit, its technological difficulties is in the type of diversion agent, particle diameter distribution determines, the dissolubility chemically with formation fluid, should realize
Inertia is kept in acid solution, can all be dissolved in formation fluid again, and physically can effectively block reservoir, it is uniform to form each layer
Enter the effect of acid.
In carbonate reservoir, when acid enters the reservoir of high injectability, it can produce the flowing of high flow conductivity
Passage-acidizing wormhole, injectability is will further improve, and other layers are not arrived then by acid treatment.Therefore carbonate rock matrix acid
Change wants effectively, it is necessary to which reaction acid is effectively shunted.Shunting in carbonate rock is typically more much more difficult than sandstone, because
Reaction can be greatly enhanced permeability in hole and runner of the acid in carbonate rock matrix.Such as most of oil-soluble resins
Carbonate rock is not suitable for, because resin particle can not block the big flowing space that sour corrosion comes out.The particulate of appropriate size
It as silica flour, calcium carbonate or organic resin can be effectively by gravel band and preforation tunnels, but can adsorb in rock surface, use
Solid particle, which shunts the particulate that most important problem is incorrect size, to cause depth to invade, this row of returning will be caused it is difficult and
Stratum is caused further to injure.Foam and Gelation diversion agent are then limited by temperature and permeability contrast,
And foam and polymer gel can in large quantities miss in high-permeability reservoir and cause remaining injury in the earth formation.These problems pair
Carbonate acidizing is very unfavorable, particularly in low-pressure gas well, big well section and net horizontal section.
In order to solve the shunting problems of carbonate rock bottom, successful foreign is developed change glactaric acid, worked well, but equally
Expose many problems.Taylor and Nasr-EI-Din notices carbonate rock rock core of the polymer Gelling down hole acid in densification
Caused by the middle decline that can cause permeability, mainly delay of the polymer in rock core and rock core injection face.ChangLynn and
When Nasr-EI-Din observes that polymer Gelling down hole acid improves the permeability of high temperature dense carbonate, crosslinking agent Fe (III)
It can precipitate.Nasr-EI-Din etc. shows that crosslinking agent Fe (III) can produce precipitation within sulfur.Mohamed etc. pays attention to
To when being had little effect with the polymer Gelling down hole acid of a large amount of volumes to improve during the injectability of dense carbonate oil reservoir.
It is external that viscoelastic surfactant is introduced into fracture storage in order to overcome the potential problems based on polymer acid solution
Among the well stimulation of layer, the autonomous shunting acid for being used in matrix acidifying is successfully developed, and is applied in acid fracturing, referred to as viscoelastic body
Self-diverting acid, the acid fluid system are that special viscoelastic surfactant is added in acid solution, are stored up using acid solution in carbonate rock
The high viscosity that viscoelastic surfactant gels are formed in layer carries out effective shunting of acid solution.
With going deep into for exploration and development, well is more and more deeper, and reservoir change is increasing, has high temperature (current domestic deep-well
150-180 DEG C of temperature), multilayer (＞ 2), ultra-deep (＞ 6000m), interlayer span big (10~138m), the strong (porosity of anisotropism
1.0~15%, contain I, II, III, IV class reservoir), and the features such as strata pressure high (generally reaching more than 60MPa).Well from
Straight well is increasing to big inclined shaft to horizontal well, reservoir span.It is right in acidifying is transformed due to the change of these reservoirs and well type
The performance such as acid solution heatproof, steering, slow, low leak-off, low frictional resistance proposes requirements at the higher level.But current steering acid is due at high temperature
Viscosity declines and is only capable of the construction of the reservoir below 150 DEG C, also, the existing acid that turns to works at a temperature of 150 DEG C and the above
When, its viscosity is less than 10mPas, can not play a part of the steering that becomes sticky, in addition, the commercially available corrosion speed for turning to acid at 180 DEG C
Rate is more than 100g/m2·h。
The content of the invention
It is an object of the invention to：Existing turn to acid for above-mentioned viscosity is low under high temperature (150-180 DEG C), corrosion rate
The problem of big, the present invention provide a kind of acidifying and turn to acid with high temperature resistant, and become sticky viscosity of the steering acid at 180 DEG C is more than
50mPas, the requirement for the steering that can meet normally to become sticky.
The technical solution adopted by the present invention is as follows：
A kind of acidifying turns to acid with high temperature resistant, includes the raw material of following percentage by weight：Technical hydrochloric acid 32.2~75.5%,
Beet alkali surface activator 3.0~8.0%, corrosion inhibiter 1.0~4.0%, ferrous stability 1.0~3.0%, high-temperature stabilizer
0~0.1%, organic acid 0~6.0%, surplus is water.
A kind of acidifying turns to acid with high temperature resistant, includes the raw material of following percentage by weight：Technical hydrochloric acid 45~75.5%, sweet tea
Dish alkali surfactant 3.5~8.0%, corrosion inhibiter 1.0~4.0%, ferrous stability 1.0~3.0%, high-temperature stabilizer
0.02~0.1%, organic acid 2.0~6.0%, surplus is water.
After acid solution injects stratum, acid solution is preferentially reacted with the carbonatite of high permeability formation, as the progress of acid-rock reaction, acid are dense
Degree constantly declines, and the transformation of beet alkali surface activator molecule micella form generation, micella, which grows and formed, mutually entwines together
Vermiculate glues, acid liquid viscosity is raised rapidly, increase the flow resistance of acid solution in the earth formation, high permeability formation is realized temporary
Stifled, eo-acid steps into less permeable layer, so as to realize the purpose for turning to acidifying.But under the high temperature conditions, the molecule in acid solution shakes
Dynamic to strengthen, the cohesive force between molecule declines, therefore micella can not form vermiform, and viscosity is too low, leads to not play becoming sticky
The effect of steering.Counter ion of the high-temperature stabilizer that the present invention adds as beet alkali surface activator, in acid-rock reaction process
In, high-temperature stabilizer and beet alkali surface activator associate, and form supermolecule, enhance between beet alkali surface activator molecule
Cohesive force, ensure micelle forma-tion vermiform, so as to reach the purpose for the steering that becomes sticky.
When acid solution and carbonate rock react, because technical hydrochloric acid is inorganic acid, hydrionic rate of release is fast, and sour rock is anti-
Speed is answered, high temperature can accelerate the speed of acid-rock reaction, cause acid concentration rapid decrease, the reconstruction scope after the steering of high temperature acid solution
It is small.The organic acid that the present invention adds can delay acid-rock reaction speed, and after technical hydrochloric acid reaction is residual acid, organic acid just participates in instead
Should, organic acid ionization produces hydrionic speed well below the hydrionic rate of release of technical hydrochloric acid, therefore delays acid significantly
Reaction speed, so as to the validity for the steering that ensures to become sticky.
Further, the mass fraction of technical hydrochloric acid is 31~37%.
Further, beet alkali surface activator includes two lauramide oxypropyl trimethyl sulfuric acid formicester ammoniums, docosane
In base dihydroxy ethyl amide betaine, erucyl amide CAB, docosyl dimethyl hydroxypropyl sulfobetaines
It is one or more.Docosyl dihydroxy ethyl amide betaine, erucyl amide CAB or docosyl dimethyl
Hydroxypropyl sulfobetaines is become sticky during acid-rock reaction, and two lauramide oxypropyl trimethyl sulfuric acid formicester ammoniums are new
Acid with technical hydrochloric acid rock salt react to it is residual sour when just start to become sticky.
Further, beet alkali surface activator is two lauramide oxypropyl trimethyl sulfuric acid formicester ammoniums and/or 22
Alkyl dihydroxy ethyl amide betaine.
Further, high-temperature stabilizer includes nitrile-acrylamide-acrylic acid acyloxyethyl trimethyl ammonium chloride, acrylamide-carbon
One in the terpolymer of dimethyl phthalate copolymer and acrylamide-dimethyl carbonate -2- acrylamide-2-methyl propane sulfonics
Kind is a variety of.
Further, high-temperature stabilizer is the three of acrylamide-dimethyl carbonate -2- acrylamide-2-methyl propane sulfonics
Membered copolymer.
Further, organic acid includes the one or more in formic acid, acetic acid and lactic acid.
Further, organic acid is formic acid and/or acetic acid.
Further, corrosion inhibiter includes Mannich base class corrosion inhibiter, quaternized pyridinium salt corrosion inhibiter and imidazoline inhibitor
In one or more.
Further, corrosion inhibiter is Mannich base class corrosion inhibiter and/or quaternized pyridinium salt corrosion inhibiter.
Further, ferrous stability includes one in citric acid, ethylenediamine tetraacetic acid sodium-salt, acetic acid and arabo-ascorbic acid
Kind is a variety of.
Further, ferrous stability is arabo-ascorbic acid.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：The present invention turns to the formula of acid
In due to the addition of high-temperature stabilizer and organic acid, high-temperature stabilizer associates with beet alkali surface activator, forms supermolecule, increases
Cohesive force under strong high temperature between beet alkali surface activator molecule, guarantee form vermiculate glues, turned so as to reach to become sticky
To purpose, organic acid then by delaying the acid-rock reaction speed under high temperature, avoids beet alkali surface activator due to acid concentration
Decline it is too fast cause the reconstruction scope small, in addition, acid-rock reaction speed, which declines, can also increase acid solution penetration range, organic acid can with it is slow
Losing agent synergy reduces corrosion rate, so as to ensure that turn to acid still has higher viscosity and relatively low corrosion at high temperature
Speed, therefore, the present invention can under high temperature (150-180 DEG C) normal work, expand turn to acid use range.
Brief description of the drawings
Fig. 1 is that embodiment 1 turns to change curve of the viscosity of acid at different temperatures with acid concentration；
Fig. 2 is that embodiment 2 turns to change curve of the viscosity of acid at different temperatures with pH value.
Embodiment
All features disclosed in this specification, can be with any in addition to mutually exclusive feature and/or step
Mode combines.
In the present invention, eo-acid refers to the acid solution proportionally configured, does not participate in acid-rock reaction.Residual acid refers to acid-rock reaction
Afterwards, acid concentration is less than the acid solution of new acid concentration 10%.Technical hydrochloric acid, beet alkali surface activator in the present invention, corrosion inhibiter, iron
Ion stabilizer, high-temperature stabilizer and organic acid are commercially available prod.
Embodiment 1
A kind of acidifying turns to acid with high temperature resistant, includes the raw material of following percentage by weight：Mass fraction is 31% industry
Hydrochloric acid 60.1%, docosyl dihydroxy ethyl amide betaine 6.0%, Mannich base class corrosion inhibiter 2.0%, different Vitamin C
Acid 1.5%, acrylamide-dimethyl carbonate copolymer 0.05%, surplus is water.
Preparation method is：Raw material is weighed according to aforementioned proportion, and Mannich base class corrosion inhibiter is added to Nacl under normal temperature
Fully dissolved in acid, then add acrylamide-dimethyl carbonate copolymer, docosyl dihydroxy ethyl amide betaine and
Arabo-ascorbic acid, supplement water stir, you can obtain being acidified with high temperature resistant steering acid, steering acid the becoming sticky at 150 DEG C
Viscosity is more than 50mPas, the requirement for the steering that can meet normally to become sticky.
Embodiment 2
The present embodiment the difference is that only with embodiment 1：Mass fraction be 31% technical hydrochloric acid 70%, 22
Alkyl dimethyl hydroxypropyl sulfobetaines 8.0%, Mannich base class corrosion inhibiter 4.0%, arabo-ascorbic acid 3.0%, acryloyl
Amine-acrylyl oxy-ethyl-trimethyl salmiac 0.1%, surplus are water.By acidifying manufactured in the present embodiment acid is turned to high temperature resistant
The viscosity that becomes sticky at 150 DEG C is more than 50mPas, the requirement for the steering that can meet normally to become sticky.
Embodiment 3
The present embodiment the difference is that only with embodiment 1：Mass fraction be 35% technical hydrochloric acid 50%, erucic acid acyl
Amine CAB 4.0%, quaternized pyridinium salt corrosion inhibiter 1.0%, ethylenediamine tetraacetic acid sodium-salt 1.0%, acrylamide-carbonic acid two
The terpolymer 0.02% of methyl esters -2- acrylamide-2-methyl propane sulfonics, surplus are water.By acidifying manufactured in the present embodiment
Become sticky viscosity of the acid at 150 DEG C, which is turned to, with high temperature resistant is more than 50mPas, the requirement for the steering that can meet normally to become sticky.
Embodiment 4
A kind of acidifying turns to acid with high temperature resistant, includes the raw material of following percentage by weight：Mass fraction is 31% industry
Hydrochloric acid 60.1%, two lauramide oxypropyl trimethyl sulfuric acid formicester ammoniums 8.0%, Mannich base class corrosion inhibiter 2.0%, pyridine season
Ammonium salt class corrosion inhibiter 1.0%, arabo-ascorbic acid 1.5%, acrylamide-dimethyl carbonate copolymer 0.05%, mass fraction are
85% formic acid 5%, surplus are water.
Preparation method is：Raw material is weighed according to aforementioned proportion, respectively by Mannich base class corrosion inhibiter and pyridine season under normal temperature
Ammonium salt class corrosion inhibiter, which is added in technical hydrochloric acid, fully to be dissolved, and then adds acrylamide-dimethyl carbonate copolymer, 22
Amido propyl trimethyl sulfuric acid formicester ammonium, arabo-ascorbic acid and formic acid, supplement water stir, you can obtain acidifying high temperature resistant
Acid is turned to, become sticky viscosity of the steering acid at 180 DEG C is more than 50mPas, the requirement for the steering that can meet normally to become sticky.
Embodiment 5
The present embodiment the difference is that only with embodiment 4：Mass fraction be 31% technical hydrochloric acid 70.2%, 20
Dialkyl dimethyl hydroxypropyl sulfobetaines 8.0%, Mannich base class corrosion inhibiter 3.0%, quaternized pyridinium salt corrosion inhibiter
1.0%, ethylenediamine tetraacetic acid sodium-salt 3.0%, nitrile-acrylamide-acrylic acid acyloxyethyl trimethyl ammonium chloride 0.1%, mass fraction is
85% formic acid 6.0%, surplus are water.It is viscous by acidifying high temperature resistant manufactured in the present embodiment steering acid becoming sticky at 180 DEG C
Degree is more than 50mPas, the requirement for the steering that can meet normally to become sticky.
Embodiment 6
The present embodiment the difference is that only with embodiment 4：Mass fraction be 35% technical hydrochloric acid 50%, 22
Amido propyl trimethyl sulfuric acid formicester ammonium 4.0%, Mannich base class corrosion inhibiter 1.0%, quaternized pyridinium salt corrosion inhibiter 0.5%,
Citric acid 1.0%, the terpolymer 0.02% of acrylamide-dimethyl carbonate -2- acrylamide-2-methyl propane sulfonics, matter
The formic acid 3.0% that fraction is 85% is measured, surplus is water.Acid is turned at 180 DEG C with high temperature resistant by acidifying manufactured in the present embodiment
The viscosity that becomes sticky be more than 50mPas, the requirement for the steering that can meet normally to become sticky.
Experimental example 1
Each two parts of the acid solution that Example 1 prepares, portion heat in 90 DEG C of water-baths, and portion adds in 150 DEG C of water-baths
Heat, a certain amount of calcium carbonate reaction is slowly added into two parts of acid solutions respectively, is tested with the HTHP rheometers of GRACE 5600
Acid liquid viscosity, then proceed to add calcium carbonate and tested viscosity, after being completed, add calcium carbonate to excess, while use stirring
Device stirs acid solution, to ensure H+Fully reacted with calcium carbonate.Acid solution viscosity with the data that acid concentration changes as shown in table 1 and Fig. 1,
According to SY/T5405 standard testing corrosion rates, corrosion rate of the acid solution at 150 DEG C is shown in Table 2.As can be seen that as sour rock is anti-
It should carry out, the viscosity of acid solution gradually reduces after first increasing, and the present embodiment turns to become sticky viscosity of the acid at 150 DEG C and is more than
50mPas, corrosion rate is low, the requirement for the steering that can meet normally to become sticky.
The viscosity of acid solution under 1 different acid concentrations of table
| Acid concentration, % | 20 | 18 | 16 | 14 | 12 | 10 | 8 | 6 | 4 | 2 | 0 |
| 90 DEG C of viscosity, mPa.s | 18 | 40 | 81 | 117 | 124 | 120 | 93 | 51 | 24 | 12 | 5 |
| 150 DEG C of viscosity, mPa.s | 11 | 20 | 33 | 52 | 61 | 57 | 36 | 15 | 6 | 5 | 3 |
The corrosion rate of acid solution at 2 150 DEG C of table
Experimental example 2
Three parts of the acid solution that Example 4 prepares, portion heat in 90 DEG C of water-baths, and portion heats in 150 DEG C of water-baths,
Portion heats in 180 DEG C of water-baths, a certain amount of calcium carbonate reaction is slowly added into three parts of acid solutions respectively, with GRACE 5600
HTHP rheometer tests acid liquid viscosity, then proceedes to add calcium carbonate and tested viscosity, after being completed, adds calcium carbonate extremely
It is excessive, while using agitator stirring acid solution, to ensure H+Fully reacted with calcium carbonate.Acid solution viscosity changes with acid solution pH value
Data are as shown in table 3 and Fig. 2, and according to SY/T5405 standard testing corrosion rates, corrosion rate of the acid solution at 180 DEG C is shown in Table 4.
As can be seen that as acid-rock reaction is carried out, the viscosity of acid solution gradually reduces after first increasing, and the present embodiment turns to acid at 180 DEG C
The viscosity that becomes sticky be more than 50mPas, corrosion rate is low, the requirement for the steering that can meet normally to become sticky.
Viscosity of the acid solution of table 3 in different pH value
| pH | 1 | 2 | 4 | 7 |
| 90 DEG C of viscosity, mPa.s | 12 | 100 | 110 | 37 |
| 150 DEG C of viscosity, mPa.s | 45 | 220 | 230 | 60 |
| 180 DEG C of viscosity, mPa.s | 35 | 78 | 71 | 24 |
The corrosion rate of acid solution at 4 180 DEG C of table
| Product | Testing time, h | Test pressure, MPa | Steel material | Corrosion rate, g/m2·h |
| Eo-acid | 4 | 16 | NT80-SS | 64.71 |
| Residual acid | 4 | 16 | NT80-SS | 3.4 |
It is embodiments of the invention as described above.The present invention is not limited to the above-described embodiments, anyone should learn that
The structure change made under the enlightenment of the present invention, the technical schemes that are same or similar to the present invention, each fall within this
Within the protection domain of invention.
Claims (10)
1. a kind of acidifying turns to acid with high temperature resistant, it is characterised in that includes the raw material of following percentage by weight：Technical hydrochloric acid 32.2
~75.5%, beet alkali surface activator 3.0~8.0%, corrosion inhibiter 1.0~4.0%, ferrous stability 1.0~3.0%,
High-temperature stabilizer 0~0.1%, organic acid 0~6.0%, surplus are water.
2. a kind of acidifying according to claim 1 turns to acid with high temperature resistant, it is characterised in that the quality of the technical hydrochloric acid
Fraction is 31~37%.
3. a kind of acidifying according to claim 1 turns to acid with high temperature resistant, it is characterised in that the glycine betaine surface-active
Agent includes two lauramide oxypropyl trimethyl sulfuric acid formicester ammoniums, docosyl dihydroxy ethyl amide betaine, erucyl amide third
One or more in base glycine betaine, docosyl dimethyl hydroxypropyl sulfobetaines.
4. a kind of acidifying according to claim 3 turns to acid with high temperature resistant, it is characterised in that the glycine betaine surface-active
Agent is two lauramide oxypropyl trimethyl sulfuric acid formicester ammoniums and/or docosyl dihydroxy ethyl amide betaine.
5. a kind of acidifying according to claim 1 turns to acid with high temperature resistant, it is characterised in that the high-temperature stabilizer includes
Nitrile-acrylamide-acrylic acid acyloxyethyl trimethyl ammonium chloride, acrylamide-dimethyl carbonate copolymer and acrylamide-carbonic acid two
One or more in the terpolymer of methyl esters -2- acrylamide-2-methyl propane sulfonics.
6. a kind of acidifying according to claim 5 turns to acid with high temperature resistant, it is characterised in that the high-temperature stabilizer is third
The terpolymer of acrylamide-dimethyl carbonate -2- acrylamide-2-methyl propane sulfonics.
7. a kind of acidifying according to claim 1 turns to acid with high temperature resistant, it is characterised in that the organic acid includes first
One or more in acid, acetic acid, lactic acid.
8. a kind of acidifying according to claim 7 turns to acid with high temperature resistant, it is characterised in that the organic acid is formic acid
And/or acetic acid.
9. a kind of acidifying according to claim 1 turns to acid with high temperature resistant, it is characterised in that the corrosion inhibiter includes
One or more in Mannich base class corrosion inhibiter, quaternized pyridinium salt corrosion inhibiter and imidazoline inhibitor.
10. a kind of acidifying according to claim 1 turns to acid with high temperature resistant, it is characterised in that the ferrous stability
Including the one or more in citric acid, ethylenediamine tetraacetic acid sodium-salt, acetic acid and arabo-ascorbic acid.
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Cited By (7)
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| CN108559481A (en) * | 2018-06-14 | 2018-09-21 | 兰州凯宏中原石油科技有限公司 | A kind of low leak-off acidification oil well blockages relieving fluid and preparation method thereof |
| CN110359035A (en) * | 2019-06-05 | 2019-10-22 | 山东青洁能环保有限公司 | Evaporative condenser heat exchanging pipe supermolecule film covering method |
| CN110483689A (en) * | 2019-08-21 | 2019-11-22 | 西南石油大学 | A kind of acidification steering polymer, preparation method, acidified diverting agent |
| CN111349426A (en) * | 2018-12-21 | 2020-06-30 | 中国石油天然气股份有限公司 | Diverting acid, preparation method and application thereof |
| CN111607381A (en) * | 2019-02-25 | 2020-09-01 | 中国石油天然气股份有限公司 | High-temperature diverting acid composition and preparation method thereof |
| CN115124982A (en) * | 2021-03-29 | 2022-09-30 | 中国石油天然气股份有限公司 | Diverting acid and preparation method and application thereof |
| CN116478677A (en) * | 2023-03-09 | 2023-07-25 | 陕西宏丰石油工程技术有限公司 | Self-steering shunt acidification method for reservoir of oil layer |
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| CN111607381A (en) * | 2019-02-25 | 2020-09-01 | 中国石油天然气股份有限公司 | High-temperature diverting acid composition and preparation method thereof |
| CN110359035A (en) * | 2019-06-05 | 2019-10-22 | 山东青洁能环保有限公司 | Evaporative condenser heat exchanging pipe supermolecule film covering method |
| CN110483689A (en) * | 2019-08-21 | 2019-11-22 | 西南石油大学 | A kind of acidification steering polymer, preparation method, acidified diverting agent |
| CN110483689B (en) * | 2019-08-21 | 2022-02-18 | 西南石油大学 | Polymer for acidification diversion, preparation method and acidification diversion agent |
| CN115124982A (en) * | 2021-03-29 | 2022-09-30 | 中国石油天然气股份有限公司 | Diverting acid and preparation method and application thereof |
| CN115124982B (en) * | 2021-03-29 | 2023-11-28 | 中国石油天然气股份有限公司 | Steering acid and preparation method and application thereof |
| CN116478677A (en) * | 2023-03-09 | 2023-07-25 | 陕西宏丰石油工程技术有限公司 | Self-steering shunt acidification method for reservoir of oil layer |
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Application publication date: 20171229 |