CN106520103B - A kind of scale remover and preparation method thereof for the long-acting increasing injection of water injection well - Google Patents
A kind of scale remover and preparation method thereof for the long-acting increasing injection of water injection well Download PDFInfo
- Publication number
- CN106520103B CN106520103B CN201610856173.2A CN201610856173A CN106520103B CN 106520103 B CN106520103 B CN 106520103B CN 201610856173 A CN201610856173 A CN 201610856173A CN 106520103 B CN106520103 B CN 106520103B
- Authority
- CN
- China
- Prior art keywords
- parts
- water injection
- scale remover
- acid
- long
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Detergent Compositions (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention provides a kind of scale removers for the long-acting increasing injection of water injection well, which includes following components: 10-12 parts of polyoxyethylene sorbitan monooleates；25-30 parts of 2- phosphates -1,2,4- butane tricarboxylate；5-8 parts of dodecyl benzene sulfonic acid；3-6 parts of organic silicon surfactants；2-5 parts of butyl glycol ethers；15-18 parts of n-butanols；13-15 parts of polyamino polyether base methene phosphoric acid；12-14 parts of water.The scale remover, which has, preferably prevents swollen, the swollen ability of contracting, and lower surface, interfacial tension, the scale remover reduces deformation work of the drop by narrow pore-throat when, reduce capillary resistance, the deformation work for pulling open the drop in pore media from rock surface greatly reduces, and increases its movement speed in formation pore.After injecting stratum, while reducing interfacial tension, is precipitated by the calcium carbonate of corrosion near wellbore zone, calcium sulfate etc., restore original annotation aquaporin, reduce water injection pressure, improved water injection rate, guarantee being normally carried out for original flood pattern.
Description
Technical field
The invention belongs to water flooding fields, and in particular to a kind of scale remover for the long-acting increasing injection of water injection well
And preparation method thereof.
Background technique
Changqing oilfields Reservoir Permeability is low, and reservoir properties are poor, and exploitation difficulty is big, and waterflooding extraction is as oil field long term stable production
Extensive use has been obtained in main means.But since machine is miscellaneous, mineral degree is exceeded and injects water and water flooding in injection water
The factors such as be incompatible, and is being also easy to produce bacterium and structure into well area, is blocking into well area, cause well infuse inadequate water, note not into
Water influences oil reservoir long term stable production.
For under-injected well, the tamper into well area is released frequently with chemical method at present, restores water injection capacity, guarantees water
Well normally fills the water.The foulings such as Changqing oilfields part oil recovery block calcium carbonate, calcium sulfate, barium sulfate are serious, generally use acidification and arrange
It applies, but there are acid solutions and the unmatched problem of dirty sample, not acid solution is to all dirty sample good descaling effects, and measure validity period is short,
Cause scale removal effect bad.
Summary of the invention
Present invention aim to address Partial Block calcium carbonate, calcium sulfate scaling serious problems, reduce water injection pressure, guarantee
The long-term injecting enough water of water injection well.
For this purpose, the scale remover is by following the present invention provides a kind of scale remover for the long-acting increasing injection of water injection well
The group of mass fraction is grouped as:
10-12 parts of polyoxyethylene sorbitan monooleate；
25-30 parts of organic phospho acid carboxylic acid antisludging agent；
5-8 parts of anionic surfactant；
3-6 parts of organic silicon surfactant；
2-5 parts of dispersing agent；
15-18 parts of diluent；
3-15 parts of methene phosphatase 11 of polyamino polyether base；
12-14 parts of water.
The organic phospho acid carboxylic acid antisludging agent is 2- phosphate -1,2,4- butane tricarboxylate, butane tricarboxylate's phosphonic acids, to carboxylic
One of base phenyl-phosphonic acid.
The anionic surfactant is dodecyl benzene sulfonic acid, α-sulfo group monocarboxylic acid, in fatty acid sulfoalkyl ester
It is a kind of.
The organic silicon surfactant is one of dimethyl polysiloxane, cyclic polysiloxanes.
The dispersing agent is one of butyl glycol ether, triethyl group hexyl phosphoric acid, polyacrylamide.
The diluent is one of methanol, industrial alcohol, n-butanol.
The molecular weight of the polyoxyethylene sorbitan monooleate is 1310.
The polyoxyethylene sorbitan monooleate is 11 parts, 28 parts of organic phospho acid carboxylic acid antisludging agent, anion table
6 parts of face activating agent, 5 parts of organic silicon surfactant, 3 parts of dispersing agent, 16 parts of diluent, polyamino polyether base methene phosphatase 11 4
Part, 13 parts of water.
A kind of preparation method of the scale remover for the long-acting increasing injection of water injection well, the specific steps are as follows:
(1) into dry enamel reaction still, 12-14 parts of water, 25-30 parts of organic phospho acid carboxylic acid scale inhibition are sequentially added
Agent, 5-8 parts of anionic surfactant, 10-12 parts of polyoxyethylene sorbitan monooleate, 13-15 parts of more ammonia
Quito ether methene phosphoric acid, is stirred；
(2) 3-6 parts of organic silicon surfactants are added while stirring, until various solvents are thoroughly mixed；
(3) it after heating reaction kettle reacts 1~4 hour to 72 DEG C~78 DEG C, is cooled to room temperature；
(4) 15-18 parts of diluent and 2-5 parts of dispersing agent is added, discharging is completed to be used for the long-acting increasing injection of water injection well
Scale remover preparation.
Beneficial effects of the present invention: this scale remover for the long-acting increasing injection of water injection well provided by the invention has
Swollen, the swollen ability of contracting and lower surface, interfacial tension are preferably prevented, when which reduces drop by narrow pore-throat
Deformation work, reduce capillary resistance, the deformation work for pulling open the drop in pore media from rock surface greatly reduces, and increases
Its movement speed in formation pore.After injecting stratum, while reducing interfacial tension, pass through corrosion near wellbore zone
The precipitating such as calcium carbonate, calcium sulfate, restores original annotation aquaporin, reduces water injection pressure, improves water injection rate, guarantees original flood pattern
It is normally carried out.
Specific embodiment
The present invention provides a kind of scale removers for the long-acting increasing injection of water injection well, and the scale remover is by following mass parts
Several groups are grouped as: 10-12 parts of polyoxyethylene sorbitan monooleate；25-30 parts of organic phospho acid carboxylic acid antisludging agent；Yin from
Sub- surfactant 5-8 parts；3-6 parts of organic silicon surfactant；2-5 parts of dispersing agent；15-18 parts of diluent；Polyamino polyether
3-15 parts of base methene phosphatase 11；12-14 parts of water.
The preparation method of above-mentioned scale remover, the specific steps are as follows:
(1) into dry enamel reaction still, 12-14 parts of water, 25-30 parts of organic phospho acid carboxylic acid scale inhibition are sequentially added
Agent, 5-8 parts of anionic surfactant, 10-12 parts of polyoxyethylene sorbitan monooleate, 13-15 parts of more ammonia
Quito ether methene phosphoric acid, is stirred；
(2) 3-6 parts of organic silicon surfactants are added while stirring, until various solvents are thoroughly mixed；
(3) it after heating reaction kettle reacts 1~4 hour to 72 DEG C~78 DEG C, is cooled to room temperature；
(4) 15-18 parts of diluent and 2-5 parts of dispersing agent is added, discharging is completed to be used for the long-acting increasing injection of water injection well
Scale remover preparation.
The above dosage component is commercial chemicals.
The scale remover of the long-acting increasing injection of the water injection well that the present invention synthesizes, adding consistency is at 0.2%, the scale remover room temperature
Lower appearance is colourless transparent liquid, and corrosion rate≤0.043mm/a is low to equipment and the corrosivity of tube bank, anti-dilative >=80%,
Contract swollen rate >=40%；Scale remover is to calcium sulfate scale scale inhibition performance >=95%, to calcium carbonate scale scale inhibition performance >=90%；The surface of scale remover
Tension≤24mN/N, interfacial tension≤10-3mN/N。
Embodiment 1:
A kind of scale remover for the long-acting increasing injection of water injection well is present embodiments provided, the scale remover is by following quality
The group of number is grouped as: 10 parts of polyoxyethylene sorbitan monooleate；25 parts of organic phospho acid carboxylic acid antisludging agent；Anion table
5 parts of face activating agent；3 parts of organic silicon surfactant；2 parts of dispersing agent；15 parts of diluent；Polyamino polyether base methene phosphatase 11 3
Part；12 parts of water.
The preparation method of above-mentioned scale remover sequentially adds 12 parts of water, 25 parts of organic phosphine into dry enamel reaction still
Sour carboxylic acid antisludging agent, 5 parts of anionic surfactant, 10 parts of polyoxyethylene sorbitan monooleate, 13 parts more
Amino polyether base methene phosphoric acid, is stirred；3 parts of organic silicon surfactants are added while stirring, until various solvents are complete
Mixing；After heating reaction kettle reacts 1 hour to 72 DEG C, it is cooled to room temperature；15 parts of diluent and 2 parts of dispersing agent is added, out
Material completes the preparation of the scale remover for the long-acting increasing injection of water injection well.
Organic phospho acid carboxylic acid antisludging agent is 2- phosphate -1,2,4- butane tricarboxylate, anionic surface work in the present embodiment
Property agent be dodecyl benzene sulfonic acid, organic silicon surfactant is dimethyl polysiloxane, and dispersing agent is butyl glycol ether, dilution
Agent is n-butanol；Special instruction is additionally needed, the molecular weight of polyoxyethylene sorbitan monooleate is 1310, readily soluble
Yu Shui has wetting action；2- phosphate -1,2,4- butane tricarboxylate are colourless transparent liquid, and soluble easily in water, molecular weight is
270.13, due to its architectural characteristic with phosphonic acids and carboxylic acid, therefore there are good scale inhibition and corrosion inhibition；Polyamino polyether Ji Jia
Fork phosphoric acid is amber transparency liquid, soluble easily in water, has very strong scale prevention ability to calcium carbonate and calcium sulfate, to silicate
There is certain effect.It is colourless transparent liquid under the scale remover room temperature, PH is acidity, prevents that swollen, the swollen ability of contracting is preferable, surface, interface
Tension is lower, and has lower corrosion rate.
The present embodiment takes 10 parts of polyoxyethylene sorbitan monooleate；2- phosphate -1,2,4- butane tricarboxylate 25
Part；5 parts of dodecyl benzene sulfonic acid；3 parts of dimethyl polysiloxane；2 parts of butyl glycol ether；15 parts of n-butanol；Polyamino polyether base
3 parts of methene phosphatase 11；12 parts of water, and scale remover is made according to above-mentioned preparation method, by scale remover continuous 1 week that concentration is 0.2%
It injects more mouthfuls and shorts well, within the period of injection, detect this scale remover provided in this embodiment to equipment and tubing string
Corrosion rate, the anti-dilative of scale remover, the swollen rate of contracting, to the scale inhibition performance of calcium carbonate and calcium sulfate and the surface of this scale remover
Tension and interfacial tension, the performance and effect specifically detected are shown in Table 1.
Table 1
The above dosage component is commercial chemicals.
From the above data, the scale remover provided in this embodiment for the long-acting increasing injection of water injection well, can effectively solve
The precipitating such as sulfuric acid calcium, calcium carbonate, thus increase in-place permeability, and low to equipment and the corrosivity of tube bank, after injecting stratum,
It while reducing interfacial tension, is precipitated by the calcium carbonate of corrosion near wellbore zone, calcium sulfate etc., restores original annotation aquaporin, drop
Low water injection pressure, improve water injection rate, guarantee being normally carried out for original flood pattern, improve the present situation of water injection of under-injected well, have compared with
Good preventing is swollen, contract swollen ability and lower surface, interfacial tension, when which reduces drop by narrow pore-throat
Deformation work, reduces capillary resistance, and the deformation work for pulling open the drop in pore media from rock surface is greatly reduced, increased
Its movement speed in formation pore.
Embodiment 2:
The present embodiment takes 11 parts of polyoxyethylene sorbitan monooleate；26 parts of butane tricarboxylate's phosphonic acids；α-sulfo group list
6 parts of carboxylic acid；4 parts of cyclic polysiloxanes；3 parts of triethyl group hexyl phosphoric acid；16 parts of industrial alcohol；Polyamino polyether base methene phosphatase 11 4
Part；13 parts of water, and scale remover is made according to above-mentioned preparation method, more mouthfuls of the injection in scale remover continuous 1 week that concentration is 0.2% is owed
Water injection well detects this scale remover provided in this embodiment to the corrosion rate of equipment and tubing string, removes within the period of injection
The anti-dilative of dirty agent, is opened the scale inhibition performance of calcium carbonate and calcium sulfate and the surface tension of this scale remover and interface at the swollen rate of contracting
Power, the performance and effect specifically detected are shown in Table 2.
Table 2
The above dosage component is commercial chemicals.
From the above data, the scale remover provided in this embodiment for the long-acting increasing injection of water injection well, can effectively solve
The precipitating such as sulfuric acid calcium, calcium carbonate, thus increase in-place permeability, and low to equipment and the corrosivity of tube bank, after injecting stratum,
It while reducing interfacial tension, is precipitated by the calcium carbonate of corrosion near wellbore zone, calcium sulfate etc., restores original annotation aquaporin, drop
Low water injection pressure, improve water injection rate, guarantee being normally carried out for original flood pattern, improve the present situation of water injection of under-injected well, have compared with
Good preventing is swollen, contract swollen ability and lower surface, interfacial tension, when which reduces drop by narrow pore-throat
Deformation work, reduces capillary resistance, and the deformation work for pulling open the drop in pore media from rock surface is greatly reduced, increased
Its movement speed in formation pore.
Embodiment 3:
The present embodiment takes 12 parts of polyoxyethylene sorbitan monooleate；To 27 parts of carboxyl phenyl phosphonic acids；Fatty acid sulphur
7 parts of Arrcostab；5 parts of dimethyl polysiloxane；4 parts of polyacrylamide；17 parts of methanol；5 parts of phosphatase 11 of polyamino polyether base methene；
13 parts of water, and scale remover is made according to above-mentioned preparation method, more mouthfuls of the injection in scale remover continuous 1 week that concentration is 0.2% is shorted
Well detects corrosion rate of this scale remover provided in this embodiment to equipment and tubing string, scale removal within the period of injection
The anti-dilative of agent, is opened the scale inhibition performance of calcium carbonate and calcium sulfate and the surface tension of this scale remover and interface at the swollen rate of contracting
Power, the performance and effect specifically detected are shown in Table 3.
Table 3
The above dosage component is commercial chemicals.
From the above data, the scale remover provided in this embodiment for the long-acting increasing injection of water injection well, can effectively solve
The precipitating such as sulfuric acid calcium, calcium carbonate, thus increase in-place permeability, and low to equipment and the corrosivity of tube bank, after injecting stratum,
It while reducing interfacial tension, is precipitated by the calcium carbonate of corrosion near wellbore zone, calcium sulfate etc., restores original annotation aquaporin, drop
Low water injection pressure, improve water injection rate, guarantee being normally carried out for original flood pattern, improve the present situation of water injection of under-injected well, have compared with
Good preventing is swollen, contract swollen ability and lower surface, interfacial tension, when which reduces drop by narrow pore-throat
Deformation work, reduces capillary resistance, and the deformation work for pulling open the drop in pore media from rock surface is greatly reduced, increased
Its movement speed in formation pore.
Embodiment 4:
The present embodiment takes 10 parts of polyoxyethylene sorbitan monooleate；2- phosphate -1,2,4- butane tricarboxylate 28
Part；8 parts of dodecyl benzene sulfonic acid；6 parts of cyclic polysiloxanes；5 parts of butyl glycol ether；18 parts of industrial alcohol；Polyamino polyether base
3 parts of methene phosphatase 11；14 parts of water, and scale remover is made according to above-mentioned preparation method, by scale remover continuous 1 week that concentration is 0.2%
It injects more mouthfuls and shorts well, within the period of injection, detect this scale remover provided in this embodiment to equipment and tubing string
Corrosion rate, the anti-dilative of scale remover, the swollen rate of contracting, to the scale inhibition performance of calcium carbonate and calcium sulfate and the surface of this scale remover
Tension and interfacial tension, the performance and effect specifically detected are shown in Table 4.
Table 4
The above dosage component is commercial chemicals.
From the above data, the scale remover provided in this embodiment for the long-acting increasing injection of water injection well, can effectively solve
The precipitating such as sulfuric acid calcium, calcium carbonate, thus increase in-place permeability, and low to equipment and the corrosivity of tube bank, after injecting stratum,
It while reducing interfacial tension, is precipitated by the calcium carbonate of corrosion near wellbore zone, calcium sulfate etc., restores original annotation aquaporin, drop
Low water injection pressure, improve water injection rate, guarantee being normally carried out for original flood pattern, improve the present situation of water injection of under-injected well, have compared with
Good preventing is swollen, contract swollen ability and lower surface, interfacial tension, when which reduces drop by narrow pore-throat
Deformation work, reduces capillary resistance, and the deformation work for pulling open the drop in pore media from rock surface is greatly reduced, increased
Its movement speed in formation pore.
Embodiment 5:
The present embodiment takes 11 parts of polyoxyethylene sorbitan monooleate；29 parts of butane tricarboxylate's phosphonic acids；α-sulfo group list
6 parts of carboxylic acid；3 parts of dimethyl polysiloxane；2 parts of triethyl group hexyl phosphoric acid；15 parts of n-butanol；Polyamino polyether base methene phosphatase 11 4
Part；12 parts of water, and scale remover is made according to above-mentioned preparation method, more mouthfuls of the injection in scale remover continuous 1 week that concentration is 0.2% is owed
Water injection well detects this scale remover provided in this embodiment to the corrosion rate of equipment and tubing string, removes within the period of injection
The anti-dilative of dirty agent, is opened the scale inhibition performance of calcium carbonate and calcium sulfate and the surface tension of this scale remover and interface at the swollen rate of contracting
Power, the performance and effect specifically detected are shown in Table 5.
Table 5
The above dosage component is commercial chemicals.
From the above data, the scale remover provided in this embodiment for the long-acting increasing injection of water injection well, can effectively solve
The precipitating such as sulfuric acid calcium, calcium carbonate, thus increase in-place permeability, and low to equipment and the corrosivity of tube bank, after injecting stratum,
It while reducing interfacial tension, is precipitated by the calcium carbonate of corrosion near wellbore zone, calcium sulfate etc., restores original annotation aquaporin, drop
Low water injection pressure, improve water injection rate, guarantee being normally carried out for original flood pattern, improve the present situation of water injection of under-injected well, have compared with
Good preventing is swollen, contract swollen ability and lower surface, interfacial tension, when which reduces drop by narrow pore-throat
Deformation work, reduces capillary resistance, and the deformation work for pulling open the drop in pore media from rock surface is greatly reduced, increased
Its movement speed in formation pore.
Embodiment 6:
The present embodiment takes 12 parts of polyoxyethylene sorbitan monooleate；To 27 parts of carboxyl phenyl phosphonic acids；Fatty acid sulphur
7 parts of Arrcostab；5 parts of cyclic polysiloxanes；4 parts of polyacrylamide；17 parts of methanol；5 parts of phosphatase 11 of polyamino polyether base methene；Water
14 parts, and scale remover is made according to above-mentioned preparation method, water is shorted into more mouthfuls of the injection in scale remover continuous 1 week that concentration is 0.2%
Well detects corrosion rate of this scale remover provided in this embodiment to equipment and tubing string, scale remover within the period of injection
Anti-dilative, the swollen rate of contracting, to the scale inhibition performance of calcium carbonate and calcium sulfate and the surface tension and interfacial tension of this scale remover,
The performance and effect specifically detected is shown in Table 6.
Table 6
The above dosage component is commercial chemicals.
From the above data, the scale remover provided in this embodiment for the long-acting increasing injection of water injection well, can effectively solve
The precipitating such as sulfuric acid calcium, calcium carbonate, thus increase in-place permeability, and low to equipment and the corrosivity of tube bank, after injecting stratum,
It while reducing interfacial tension, is precipitated by the calcium carbonate of corrosion near wellbore zone, calcium sulfate etc., restores original annotation aquaporin, drop
Low water injection pressure, improve water injection rate, guarantee being normally carried out for original flood pattern, improve the present situation of water injection of under-injected well, have compared with
Good preventing is swollen, contract swollen ability and lower surface, interfacial tension, when which reduces drop by narrow pore-throat
Deformation work, reduces capillary resistance, and the deformation work for pulling open the drop in pore media from rock surface is greatly reduced, increased
Its movement speed in formation pore.
Embodiment 7:
The implementation that the present invention produces 1 ton is as follows: sequentially adding the water of 130kg, 2- phosphate -1,2 of 270kg, 4- tricarboxylic
The polyamino of sour butane, the dodecyl benzene sulfonic acid of 70kg, the polyoxyethylene sorbitan monooleate of 110kg, 140kg is more
Ether methene phosphoric acid opens agitating device, and the organic silicon surfactant of 60kg is added while stirring, is heated to 75 DEG C of reactions 1
It after hour, is cooled to room temperature, the butyl glycol ether discharging of the n-butanol and 50kg of 170kg part is to obtain the long-acting drop of commodity water injection well
Press the scale remover of augmented injection.
Field application situation
For the seven factory's block calcium sulfate, calcium carbonate scaling serious situation of recovering the oil, above-mentioned medicament is applied to 5 mouthfuls and is shorted
Well, specific implementation effect are shown in Table 7.
The oil recovery seven factory's scale removers filling of table 7 front and back tables of data
Well is shorted to 5 mouthfuls and continuously fills the scale remover that 1 week concentration is 0.2%, after filling medicament under average water injection pressure
1.9MPa drops, and the water filling of individual well day rises 13m3/ d, measure validity period up to 180 days or more, illustrate that the scale remover can effectively solve sulphur removal
The precipitating such as sour calcium, calcium carbonate, increases in-place permeability, improves the present situation of water injection for shorting well, plays the effect of increasing injection, and
Validity period is long after effect, has preferable field application value.
The scale remover of the long-acting increasing injection of water injection well provided by the invention be a kind of acid medicine, have preferably prevent it is swollen,
The swollen ability that contracts and lower surface, interfacial tension, the scale remover reduce deformation work of the drop by narrow pore-throat when, subtract
Few capillary resistance, the deformation work for pulling open the drop in pore media from rock surface greatly reduce, and increase it on stratum
Movement speed in hole.After injecting stratum, while reducing interfacial tension, pass through the calcium carbonate of corrosion near wellbore zone, sulphur
The precipitating such as sour calcium, restores original annotation aquaporin, reduces water injection pressure, improves water injection rate, guarantees being normally carried out for original flood pattern.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.The portion that the present embodiment does not describe in detail
The well-known components and common structure or conventional means of part and the structure category industry, do not describe one by one here.
Claims (1)
1. a kind of preparation method of the scale remover for the long-acting increasing injection of water injection well, which is characterized in that specific step is as follows:
(1) 12-14 parts of water are sequentially added into dry enamel reaction still, 25-30 parts of organic phospho acid carboxylic acid antisludging agent, 5-8
The anionic surfactant of part, 10-12 parts of polyoxyethylene sorbitan monooleate, 13-15 parts of polyamino polyether
Base methene phosphoric acid, is stirred；
(2) 3-6 parts of organic silicon surfactants are added while stirring, until various solvents are thoroughly mixed；
(3) it after heating reaction kettle reacts 1~4 hour to 72 DEG C~78 DEG C, is cooled to room temperature；
(4) 15-18 parts of diluent and 2-5 parts of dispersing agent is added, removing for the long-acting increasing injection of water injection well is completed in discharging
The preparation of dirty agent；
The organic phospho acid carboxylic acid antisludging agent is 2- phosphate -1,2,4- butane tricarboxylate, butane tricarboxylate's phosphonic acids, to carboxyl benzene
One of base phosphonic acids；
The anionic surfactant is dodecyl benzene sulfonic acid, α-sulfo group monocarboxylic acid, one in fatty acid sulfoalkyl ester
Kind；
The organic silicon surfactant is one of dimethyl polysiloxane, cyclic polysiloxanes；
The dispersing agent is one of butyl glycol ether, triethyl group hexyl phosphoric acid, polyacrylamide；
The diluent is one of methanol, industrial alcohol, n-butanol；
The molecular weight of the polyoxyethylene sorbitan monooleate is 1310；
Party's preparation method is used for the scale remover of the long-acting increasing injection of water injection well, after which injects stratum, is reducing interface
It while tension, is precipitated by the calcium carbonate of corrosion near wellbore zone, calcium sulfate etc., restores original annotation aquaporin, reduce water injection pressure,
Water injection rate is improved, guarantees being normally carried out for original flood pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856173.2A CN106520103B (en) | 2016-09-27 | 2016-09-27 | A kind of scale remover and preparation method thereof for the long-acting increasing injection of water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856173.2A CN106520103B (en) | 2016-09-27 | 2016-09-27 | A kind of scale remover and preparation method thereof for the long-acting increasing injection of water injection well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106520103A CN106520103A (en) | 2017-03-22 |
| CN106520103B true CN106520103B (en) | 2019-07-05 |
Family
ID=58344463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610856173.2A Active CN106520103B (en) | 2016-09-27 | 2016-09-27 | A kind of scale remover and preparation method thereof for the long-acting increasing injection of water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106520103B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110066649A (en) * | 2018-01-23 | 2019-07-30 | 陕西一诺油气工程技术服务有限公司 | The preparation of a kind of compound organic deblocking agent and in low permeability oil field application |
| CN109135705A (en) * | 2018-09-05 | 2019-01-04 | 石家庄长宏能源科技有限公司 | A kind of pressure reducing and injection increasing agent used for flooding well and preparation method thereof |
| CN110982503B (en) * | 2019-11-18 | 2021-09-14 | 西安均德石油工程技术有限公司 | Dissolved polymer microsphere composite unblocking acid and preparation method and application thereof |
| CN111961456A (en) * | 2020-08-19 | 2020-11-20 | 中国石油天然气股份有限公司 | Chelating injection-increasing agent for water injection well and preparation method thereof |
| CN113480700B (en) * | 2021-07-01 | 2022-06-14 | 海南恒建沥青路面有限公司 | Solid asphaltene inhibitor and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538457A (en) * | 2009-04-30 | 2009-09-23 | 中国石油天然气股份有限公司 | Input well composite blockage relieving agent and preparation method thereof |
| CN102703047A (en) * | 2012-06-19 | 2012-10-03 | 中国石油天然气股份有限公司 | Oil field scale inhibitor as well as preparation method and application thereof |
| CN103820150A (en) * | 2014-03-14 | 2014-05-28 | 西安石油大学 | Barium sulfate and strontium sulfate descaling agent and preparation method thereof |
-
2016
- 2016-09-27 CN CN201610856173.2A patent/CN106520103B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538457A (en) * | 2009-04-30 | 2009-09-23 | 中国石油天然气股份有限公司 | Input well composite blockage relieving agent and preparation method thereof |
| CN102703047A (en) * | 2012-06-19 | 2012-10-03 | 中国石油天然气股份有限公司 | Oil field scale inhibitor as well as preparation method and application thereof |
| CN103820150A (en) * | 2014-03-14 | 2014-05-28 | 西安石油大学 | Barium sulfate and strontium sulfate descaling agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106520103A (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106520103B (en) | A kind of scale remover and preparation method thereof for the long-acting increasing injection of water injection well | |
| CN106833580A (en) | A kind of hyposmosis water injection well increasing injection scale preventative and preparation method thereof | |
| CN106867490A (en) | A kind of chelating de-plugging agent suitable for complicated fouling reservoir and preparation method thereof | |
| CN104371689B (en) | A kind of ultralow interfacial tension surfactant compound system and preparation method thereof | |
| CN108690588A (en) | Environment-friendly type de-plugging of well system, preparation method and its method for removing blockage | |
| CN104312570B (en) | Low-corrosion chemical themogenic pressurizing gel breaker and preparation method thereof | |
| MX2013011702A (en) | Method and compositions for enhanced oil recovery. | |
| CN108587588B (en) | Injection increasing agent for water injection well and preparation method and application thereof | |
| CN104371684A (en) | Polyhydroxyl hydrolyzed micelle acidolysis blockage removal agent and blockage removal technology | |
| CN109763127B (en) | Quick dissolving solution for soluble bridge plug and preparation method thereof | |
| CN106634917A (en) | Plug removal agent for oil-water well of tight oil reservoir | |
| US20200385631A1 (en) | Preparation Method of Supercritical Carbon Dioxide Thickener for Tight Oil and Gas Reservoir | |
| CN106190073B (en) | The multi-functional cleaning antiscale formula of the hypotonic complexity fouling reservoir of one kind and preparation method | |
| CN110066649A (en) | The preparation of a kind of compound organic deblocking agent and in low permeability oil field application | |
| CN112029489B (en) | Formula and preparation method of low-pressure gas field old well re-production blockage removing working solution | |
| CN106833576A (en) | A kind of cleaning antiscale and preparation method thereof | |
| CN110105942B (en) | Wax remover and preparation method and application thereof | |
| CN103242498B (en) | Amphiphilic block inner quaternary ammonium oil and preparation method thereof and application | |
| CN112745821A (en) | Temperature-resistant and salt-resistant oil displacement agent for offshore thick oil steam accompanying injection and application thereof | |
| CN101921582B (en) | Composite dirt blocking remover for oil-water well | |
| CN112724953B (en) | Nano pressure-reducing, injection-increasing, oil-displacing and viscosity-reducing integrated agent and preparation method and application thereof | |
| CN112877046B (en) | Deep thickened oil blocking remover for oil well and preparation method and application method thereof | |
| CN101139520A (en) | Method for preparing alkanolamide and its application in teritary oil extraction | |
| CN105443104B (en) | Polymer flooding blocks method for removing blockage after well acidizing | |
| CN102382635B (en) | Viscosity reducer for gathering and transferring of single pipes and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |