CN108531153A - A kind of high temperature resistant Petropols dispersion blocking agent and the preparation method and application thereof - Google Patents
A kind of high temperature resistant Petropols dispersion blocking agent and the preparation method and application thereof Download PDFInfo
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- CN108531153A CN108531153A CN201810413957.7A CN201810413957A CN108531153A CN 108531153 A CN108531153 A CN 108531153A CN 201810413957 A CN201810413957 A CN 201810413957A CN 108531153 A CN108531153 A CN 108531153A
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- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
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- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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Abstract
A kind of high temperature resistant Petropols dispersion blocking agent of present invention offer and the preparation method and application thereof, including the raw material of following percentage are made：Petropols 5%~15%, surfactant 0.1%~0.5%, cationic polyacrylamide 0.05%~0.4%, triethanolamine 0.1%~0.4%, sodium hydrogensulfite 0.1% 0.5%, nano SiO 2 particle 1%~3%, pH adjusting agent 0.1%~0.5%, surplus are water；The sum of mass percent of each raw material is 100%.Behind blocking agent injection of the present invention stratum, cationic polyacrylamide therein can occur modified-reaction at a high temperature of stratum and obtain sulfonic group modified cationic polyacrylamide, the heat-resisting quantity, salt-resistance and stability that Petropols dispersion blocking agent can be effectively improved realize the effective water blockoff of high temperature to enable Petropols smoothly to reach oil reservoir well deep part.
Description
Technical field
The present invention relates to a kind of high temperature resistant Petropols dispersion blocking agents and the preparation method and application thereof, belong to oilfield chemistry
Technical field.
Background technology
Well water is a kind of important phenomenon during oil extraction in oil field, and cause of producing water in oil well is generally：(1) water is injected
And edge water propelling；(2) bottom water promotes；(3) upper water, lower water are scurried into；(4) intermediate water enters, and intermediate water refers to again between oil reservoir
Intermediary water, the i.e. water layer between upper and lower two oil reservoirs.It is endangered very much, such as caused by well water：(1) sand production makes glue
It ties loose sandstone layer to be destroyed, causes to shake out, collapse oil reservoir when serious or oil well is caused to stop production；(2) oil well stop-spraying is shown in
Water content is continuously increased after water, and pit shaft fluid column weight increases therewith, and flowing well is caused to be unable to blowing；(3) region of bypassed oil, oil well are formed
Premature water breakthrough can cause to form some regions of bypassed oil in underground, greatly reduce the recovery ratio of oil reservoir；(4) equipment is corroded, and can be corroded
Oil well rig and destruction casing programme, increase workover treatment task and difficulty, shorten the oil well service life；(5) increase cost for oil production, increase
Big ground water injection rate, accordingly increases surface pond usage amount, the use of water injection facility and power consumption.
Profile control and water plugging controls the conventional measure of water as oil field, can play raising formation pressure, improves involving for injection water
Coefficient, to improve the effect of oil recovery factor.But with the exploitation in oil field, characteristics of reservoirs and environment constantly change, especially
After oil reservoir enters the High water cut productive life, long-period water drive keeps oil reservoir development contradiction more prominent, existing profile control and water plugging technology, especially
Can effectively using technology always lag behind the needs of oil field development.For certain high temperature deep well oil reservoirs in China, reservoir temperature
Up to 130 DEG C, for above-mentioned oil field, the prior art generally uses polyacrylamide type high temp gel plugging agent and solid particle
Type blocking agent.Polyacrylamide type high temp gel plugging agent gelation time is too fast, easily causes near wellbore zone blocking, and frozen glue is stablized under high temperature
Property is poor, and operation process aqueous gel system enters the shortcomings of oil reservoir easily causes injury.Solid particle type blocking agent is mainly by water
The inorganic solid particles such as mud, flyash and other organic granulars composition, stratum is injected into the form of suspended substance, passes through organic
The filling of the bridge formation and inorganic particle of grain, to adjust intake profile and water phase permeability, to block high permeability zone and water-yielding stratum,
Achieve the purpose that adjust intake profile, water blockoff, but this is a kind of non-selective blocking agent, and this grain-type water shutoff agent stability
Difference, easily caking injury reservoir, are only applicable near wellbore zone closure.Also, it is directed to high temperature deep well oil reservoir, Chinese patent literature
CN101423753A also discloses that a kind of profile control agent special for thermal recovery for heavy crude well.The profile control agent is made of following raw materials according：Anion
Type polyacrylamide, alkyl phenol polyoxyethylene ether, Petropols, the unconventional and uninhibited product of crow, dimethylbenzene, caustic soda and water.The profile control of the invention
It is used for a long time under conditions of agent can be 200 DEG C in temperature, salinity is more than 20000mg/L, but can the profile control agent more
Using unknown under the conditions of high salinity, anion-polyacrylamide gelation time is fast, and profile control agent emulsion overall stability is owed
It is good, near wellbore zone blocking is easily caused, and there are the defects of polyacrylamide type high temp gel plugging agent；And raw materials used middle diformazan
Benzene belongs to noxious material, pollutes environment, Long Term Contact is also very big to human injury, and controlled drug is belonged on oil field.
Therefore, a kind of novel temperature-resistant anti-salt blocking agent is developed, stabilizing power is strong under high temperature and high salinity, can be smooth
It reaches oil reservoir well deep part and realizes water blockoff, and there is oil-water selectivity and excellent plugging effect, for solving high-temperature oil reservoir
Well water problem have great importance.
Invention content
In view of the deficienciess of the prior art, the present invention provides a kind of high temperature resistant Petropols dispersion blocking agent.The present invention
After blocking agent injects stratum, modified-reaction can occur at a high temperature of stratum for cationic polyacrylamide therein, introduce former with carbon
The sulfonic group that son is connected obtains sulfonic group modified cationic polyacrylamide, the modified cation hydrolysis of polyacrylamide
Spend low, thermal stability is good, can effectively disperse, stablize Petropols suspension, effectively improves Petropols dispersion blocking agent
Heat-resisting quantity, salt-resistance and stability, to enable Petropols smoothly reach oil reservoir well deep part realize water blockoff.This hair
Bright blocking agent heat resistance and anti-salt property are excellent, and dispersion stabilization is good under high temperature and high salinity, and with grease choosing
Selecting property can play effective plugging action in 130 DEG C of high-temperature oil reservoir environment.
The present invention also provides a kind of preparation method and applications of high temperature resistant Petropols dispersion blocking agent.It is prepared by the present invention
Method is simple, and modified cation polyacrylamide is to react to generate after injecting stratum, avoids a series of complex on ground
Synthesis technology reduces cost and danger (predominantly personal safety).
Technical scheme is as follows：
A kind of high temperature resistant Petropols dispersion blocking agent, including the raw material of following mass percent are made：Petropols 5%
~15%, surfactant 0.1%~0.5%, cationic polyacrylamide 0.05%~0.4%, triethanolamine 0.1%~
0.4%, sodium hydrogensulfite 0.1%-0.5%, nano SiO 2 particle 1%~3%, pH adjusting agent 0.1%~0.5% are remaining
Amount is water；The sum of mass percent of each raw material is 100%.
According to currently preferred, the Petropols dispersion blocking agent, including the raw material of following percentage are made：Oil
Resin 5%~10%, surfactant 0.1%~0.3%, cationic polyacrylamide 0.05%~0.3%, triethanolamine
0.1%~0.2%, sodium hydrogensulfite 0.15%-0.4%, nano SiO 2 particle 1%~2%, pH adjusting agent 0.2%~
0.4%, surplus is water；The sum of mass percent of each raw material is 100%.
According to currently preferred, the Petropols are the Petropols of C5 or C9, relative molecular mass is 1000~
5000, softening point is 100 DEG C~120 DEG C.
According to currently preferred, the surfactant is amphoteric surfactant；Preferably, the surfactant
For octadecyldimethyl amine-oxides.
According to currently preferred, the weight average molecular weight of the cationic polyacrylamide is 700 × 104~800 × 104,
Cationic degree is 20-40%.
According to currently preferred, the grain size of the nano SiO 2 particle is 10-14nm.
According to currently preferred, the pH adjusting agent is sodium hydroxide.
According to currently preferred, the water is that salinity is (20-25) × 104The water flooding of mg/L, wherein Na+Content
For (7-8) × 104mg/L、Ca2+Content is (0.5-1.5) × 104mg/L、Mg2+Content is (0.1-0.2) × 104mg/L、HCO3 -
Content is (0.01-0.02) × 104mg/L、Cl-Content is (13-14) × 104mg/L；Preferably, the water is that salinity is
22.3×104The water flooding of mg/L, wherein Na+Content is 7.3 × 104mg/L、Ca2+Content is 1.1 × 104mg/L、Mg2+Content
It is 0.15 × 104mg/L、HCO3 -Content is 0.018 × 104mg/L、Cl-Content is 13.7 × 104mg/L。
The preparation method of above-mentioned high temperature resistant Petropols dispersion blocking agent, including step：
Surfactant is soluble in water, Petropols powder is added, it is fully dispersed to obtain Petropols dispersion liquid；By sun from
Sub- polyacrylamide, triethanolamine, sodium hydrogensulfite and pH adjusting agent are soluble in water, nano SiO 2 particle are added, fully
Disperse to obtain mixed liquor；Mixed liquor and Petropols dispersion liquid are uniformly mixed to get Petropols dispersion blocking agent.
According to currently preferred, the Petropols powder is to use Freezing smashing method, i.e., will using liquid nitrogen as low-temperature receiver
The powder that it is 0.5 micron~10 microns at grain size that Petropols, which are smashed,.
According to currently preferred, the mass concentration of the Petropols dispersion liquid petrochina resin is 25-30%.
Above-mentioned high temperature resistant Petropols dispersion blocking agent is applied to high-temperature oil reservoir oil well and carries out profile control and water plugging.
According to currently preferred, the application process is：Petropols dispersion blocking agent is injected into high-temperature oil reservoir oil well
In, as the temperature in oil reservoir oil well from top to bottom gradually rises, the cation polypropylene acyl in Petropols dispersion blocking agent
Amine and triethanolamine, sodium hydrogensulfite occur it is sulfonic group modified be obtained by the reaction sulfonic group modified cationic polyacrylamide, it is described
The weight average molecular weight of sulfonic group modified cationic polyacrylamide is 710 × 104~810 × 104, can effectively disperse, stablize
Petropols suspension effectively improves the heat-resisting quantity, salt-resistance and stability of Petropols dispersion blocking agent, to reach by
Petropols dispersion blocking agent injects purpose of the oil reservoir well deep part without blocking near wellbore zone, into after oil reservoir well deep part
Petropols start softening and become sticky to coalesce to block water stream channel and achieve the purpose that water blockoff.
The present invention technical characterstic and have the beneficial effect that：
1, polyacrylamide facile hydrolysis under high temperature and high salt, and under thermal oxidation and high salt conditions polyacrylamide it is molten
Xie Du can be deteriorated and cause its stability that can also be deteriorated；In order to improve drawbacks described above, the present invention utilizes carbon in cationic polymer
The characteristics of cation easily combines with alkaline matter under high temperature action, shifts, isomerization etc. is reacted, in cation polypropylene
Triethanolamine, sodium hydrogensulfite and nano SiO 2 particle are added in amide, after blocking agent enters stratum, temperature is gradual
It increases, under high temperature, basic conditions, cationic polyacrylamide is reacted with triethanolamine first, on methylol substituted amido
A hydrogen, product reacts with sodium hydrogensulfite again so that the hydroxyl on a part of methylol is replaced by sodium group again,
The high-temperature stability that product is improved under the action of nano particle reduces its degree of hydrolysis, the modified sun ultimately generated from
(average molecular weight is 700 × 10 to sub- polyacrylamide4~800 × 104) heat resistance greatly improves, stabilizing power is strong.On surface
Under the wetting action of activating agent, Petropols are dispersed in surfactant solution, when modified cation polyacrylamide generates
Afterwards, Petropols dispersion dispersion stabilization and temperature-resistant anti-salt performance are greatly improved, hence it is evident that improve other granular patterns
Defect existing for blocking agent.Behind Petropols dispersion injection stratum prepared by the present invention, due to modified cation polyacrylamide
Presence, mating surface activity agent aid keeps the resistance to mild anti-salt property of Petropols suspension excellent, and dispersion stabilization is good, energy
It is enough smoothly to reach oil reservoir well deep part, and play effective plugging action in 130 DEG C of high-temperature oil reservoir environment.
2, Petropols dispersion blocking agent of the present invention is good in high temperature and stability inferior with high salt, can inject oil reservoir well deep part
Without blocking near wellbore zone, starts softening into the Petropols after oil reservoir well deep part and become sticky to coalesce that block flow logical
Road reaches the mesh of water blockoff.Petropols have higher viscosity at the formation temperature, the height after being in a liquid state using its softening coalescence
Viscous characteristic, adhesion is adsorbed on porous rocks surface and is blocked to formation pore, and plugging effect is good under high temperature and high salt, envelope
The stifled time is long；Petrochina resin of the present invention does not dissolve in second alcohol and water, can be dissolved in oil, it can be achieved that the not stifled oil of selective water plugging, energy
It is effective to block high permeability zone.And aqueous gel is without oil-water selectivity, polymer plastic in hole under crosslinking agent effect is right
Water layer plugging effect is poor compared with Petropols, is easy to be dehydrated and fail under high temperature and high salt, and easily pollute reservoir,
Oil reservoir can be blocked, but waterflood recovery efficiency factor can be caused to reduce.
3, raw material of the present invention is cheap and easy to get, and preparation method is simple；Behind Petropols dispersion blocking agent injection of the present invention stratum,
Cationic polyacrylamide therein reaction under stratum high-temperature effect generates modified cation polyacrylamide, avoids ground
The synthesis technology of upper a series of complex reduces cost and danger (predominantly personal safety).
4, the Petropols dispersion that prepared by the present invention is with good stability after pyroreaction, in high temperature and Gao Kuang
The dispersion stable time has higher sealing ratiod simultaneously up to 22h, blocking agent of the invention under change degree, high salinity (22 ×
104Mg/L), under high temperature (130 DEG C), sealing ratiod is up to 98.3%.
Specific implementation mode
Below by specific embodiment, the present invention will be further described, but not limited to this.
Raw materials used in embodiment is convenient source, commercially available acquisition；The method is existing unless otherwise specified
Technology.
In embodiment, Petropols used are C9 Petropols, and Guangzhou Li Ben Co., Ltds are on sale, averagemolecular wt matter
Amount is 3500, and softening point is 120 DEG C；Cationic polyacrylamide, weight average molecular weight are 750 × 104, cationic degree 30%,
Anhui Jucheng Fine Chemical Co., Ltd. is on sale；Nano SiO 2 particle average grain diameter used is 12nm, Sigma-Aldrich
Company is on sale.
Water used is that salinity is 22.3 × 104The water flooding of mg/L, wherein Na+Content is 7.3 × 104mg/L、Ca2+Contain
Amount is 1.1 × 104mg/L、Mg2+Content is 0.15 × 104mg/L、HCO3 -Content is 0.018 × 104mg/L、Cl-Content is 13.7
×104mg/L。
Petropols powder used：Using Freezing smashing method, i.e., using liquid nitrogen as low-temperature receiver, Petropols are ground into grain size
For 0.5 micron~2 microns of Petropols powder.
Embodiment 1
A kind of high temperature resistant Petropols dispersion blocking agent, including the raw material of following percentage are made：C9 Petropols 10%,
Octadecyldimethyl amine-oxides 0.2%, cationic polyacrylamide 0.1%, triethanolamine 0.2%, sodium hydrogensulfite
0.2%, nano SiO 2 particle 1.1%, sodium hydroxide 0.3%, surplus is water；The sum of the mass percent of each raw material is
100%.
The preparation method of above-mentioned high temperature resistant Petropols dispersion blocking agent, including step：
It is 22.3 × 10 to 25g salinities40.2g octadecyldimethyl amine-oxides are added in the water flooding of mg/L, fully
Dissolving stirs evenly, and is slowly added to 10g Petropols powder (adition process is controlled in 5~10min), is sufficiently stirred and is uniformly dispersed
Obtain mixed liquor A；It is 22.3 × 10 to 13g salinities40.2g sodium hydrogensulfites, tri- ethyl alcohol of 0.2g are added in the water flooding of mg/L
Amine stirs evenly, it is made fully to dissolve, and the cationic polyacrylamide aqueous solution that 50g mass concentrations are 0.2% is added, and add
Enter 0.3g sodium hydroxides and 1.1g nano SiO 2 particles, it is fully dispersed to stir evenly to obtain mixed liquid B；By mixed liquor A and mixed
Liquid B is closed to be sufficiently mixed to get Petropols dispersion blocking agent.
Simulate high-temperature oil reservoir oil well condition：By Petropols dispersion blocking agent obtained above at 90 DEG C, 5h is stirred, is obtained
Blocking agent after high-temperature process.In blocking agent, cationic polyacrylamide occurs modified-reaction and generates sulfonic group modified cation poly- third
Acrylamide, weight average molecular weight are 750 × 104；After blocking agent after above-mentioned high-temperature process places 15h at 130 DEG C, Petropols
Agglomeration phenomena does not occur for still stable dispersion, illustrates the sulfonic group modified cation poly- third that the blocking agent of the present invention is formed after use
Acrylamide can improve the stability under Petropols high temperature and high salt conditions.
Embodiment 2
A kind of high temperature resistant Petropols dispersion blocking agent, including the raw material of following percentage are made：C9 Petropols 10%,
Octadecyldimethyl amine-oxides 0.25%, cationic polyacrylamide 0.1%, triethanolamine 0.2%, sodium hydrogensulfite
0.2%, nano SiO 2 particle 1.1%, sodium hydroxide 0.3%, surplus is water；The sum of the mass percent of each raw material is
100%.
The preparation method of above-mentioned high temperature resistant Petropols dispersion blocking agent, it is consistent with embodiment 1, except that：Surface
The dosage of activating agent octadecyldimethyl amine-oxides is 0.25g, and other steps and condition are same as Example 1.
Simulate high-temperature oil reservoir oil well condition：By Petropols dispersion blocking agent obtained above at 90 DEG C, 5h is stirred, is obtained
Blocking agent after high-temperature process.In blocking agent, cationic polyacrylamide occurs modified-reaction and generates sulfonic group modified cation poly- third
Acrylamide, weight average molecular weight are 750 × 104；After blocking agent after above-mentioned high-temperature process places 16h at 130 DEG C, Petropols
Agglomeration phenomena does not occur for still stable dispersion, when illustrating the dosage of surfactant within the scope of the present invention, improves surface-active
The dosage of agent can improve the stability under Petropols high temperature and high salt conditions.
Embodiment 3
A kind of high temperature resistant Petropols dispersion blocking agent, including the raw material of following percentage are made：C9 Petropols 10%,
Octadecyldimethyl amine-oxides 0.3%, cationic polyacrylamide 0.1%, triethanolamine 0.2%, sodium hydrogensulfite
0.2%, nano SiO 2 particle 1.1%, sodium hydroxide 0.3%, surplus is water；The sum of the mass percent of each raw material is
100%.
The preparation method of above-mentioned high temperature resistant Petropols dispersion blocking agent, it is consistent with embodiment 1, except that：Surface
The dosage of activating agent octadecyldimethyl amine-oxides is 0.3g, and other steps and condition are same as Example 1.
Simulate high-temperature oil reservoir oil well condition：By Petropols dispersion blocking agent obtained above at 90 DEG C, 5h is stirred, is obtained
Blocking agent after high-temperature process.In blocking agent, cationic polyacrylamide occurs modified-reaction and generates sulfonic group modified cation poly- third
Acrylamide, weight average molecular weight are 750 × 104；After blocking agent after above-mentioned high-temperature process places 17h at 130 DEG C, Petropols
Agglomeration phenomena does not occur for still stable dispersion, when illustrating the dosage of surfactant within the scope of the present invention, improves surface-active
The dosage of agent can improve the stability under Petropols high temperature and high salt conditions.
Embodiment 4
A kind of high temperature resistant Petropols dispersion blocking agent, including the raw material of following percentage are made：C9 Petropols 10%,
Octadecyldimethyl amine-oxides 0.2%, cationic polyacrylamide 0.15%, triethanolamine 0.2%, sodium hydrogensulfite
0.2%, nano SiO 2 particle 1.1%, sodium hydroxide 0.3%, surplus is water；The sum of the mass percent of each raw material is
100%.
The preparation method of above-mentioned high temperature resistant Petropols dispersion blocking agent, it is consistent with embodiment 1, except that：It is added
The cationic polyacrylamide aqueous solution that 50g mass concentrations are 0.3%, other steps and condition are same as Example 1.
Simulate high-temperature oil reservoir oil well condition：By Petropols dispersion blocking agent obtained above at 90 DEG C, 5h is stirred, is obtained
Blocking agent after high-temperature process.In blocking agent, cationic polyacrylamide occurs modified-reaction and generates sulfonic group modified cation poly- third
Acrylamide, weight average molecular weight are 750 × 104；After blocking agent after above-mentioned high-temperature process places 18h at 130 DEG C, Petropols
Agglomeration phenomena does not occur for still stable dispersion, when illustrating the dosage of cationic polyacrylamide within the scope of the present invention, improves it
Dosage can improve the stability under Petropols high temperature and high salt conditions.
Embodiment 5
A kind of high temperature resistant Petropols dispersion blocking agent, including the raw material of following percentage are made：C9 Petropols 10%,
Octadecyldimethyl amine-oxides 0.25%, cationic polyacrylamide 0.3%, triethanolamine 0.2%, sodium hydrogensulfite
0.2%, nano SiO 2 particle 1.1%, sodium hydroxide 0.3%, surplus is water；The sum of the mass percent of each raw material is
100%.
The preparation method of above-mentioned high temperature resistant Petropols dispersion blocking agent, it is consistent with embodiment 2, except that：It is added
The cationic polyacrylamide aqueous solution that 50g mass concentrations are 0.6%, other steps and condition are same as Example 2.
Simulate high-temperature oil reservoir oil well condition：By Petropols dispersion blocking agent obtained above at 90 DEG C, 5h is stirred, is obtained
Blocking agent after high-temperature process.In blocking agent, cationic polyacrylamide occurs modified-reaction and generates sulfonic group modified cation poly- third
Acrylamide, weight average molecular weight are 750 × 104；After blocking agent after above-mentioned high-temperature process places 22h at 130 DEG C, Petropols
Agglomeration phenomena does not occur for still stable dispersion, when illustrating the dosage of cationic polyacrylamide within the scope of the present invention, improves it
Dosage can improve the stability under Petropols high temperature and high salt conditions.
Embodiment 6
A kind of high temperature resistant Petropols dispersion blocking agent, including the raw material of following percentage are made：C9 Petropols 10%,
Octadecyldimethyl amine-oxides 0.3%, cationic polyacrylamide 0.15%, triethanolamine 0.2%, sodium hydrogensulfite
0.2%, nano SiO 2 particle 1.1%, sodium hydroxide 0.3%, surplus is water；The sum of the mass percent of each raw material is
100%.
The preparation method of above-mentioned high temperature resistant Petropols dispersion blocking agent, it is consistent with embodiment 3, except that：It is added
The cationic polyacrylamide aqueous solution that 50g mass concentrations are 0.3%, other steps and condition are same as Example 3.
Simulate high-temperature oil reservoir oil well condition：By Petropols dispersion blocking agent obtained above at 90 DEG C, 5h is stirred, is obtained
Blocking agent after high-temperature process.In blocking agent, cationic polyacrylamide occurs modified-reaction and generates sulfonic group modified cation poly- third
Acrylamide, weight average molecular weight are 750 × 104；After blocking agent after above-mentioned high-temperature process places 18h at 130 DEG C, Petropols
Agglomeration phenomena does not occur for still stable dispersion, when illustrating the dosage of cationic polyacrylamide within the scope of the present invention, improves it
Dosage can improve the stability under Petropols high temperature and high salt conditions.
Comparative example 1
A kind of preparation method of blocking agent, as described in Example 1, except that：Be added without sodium hydroxide, other steps and
Condition is consistent with embodiment 1.
Simulate high-temperature oil reservoir oil well condition：By blocking agent obtained above at 90 DEG C, 5h is stirred, is obtained stifled after high-temperature process
Agent.After blocking agent after above-mentioned high-temperature process places 3h at 130 DEG C, there is agglomeration phenomena in Petropols, illustrate modified sun
Polyacrylamide can effectively improve stability of the Petropols under high temperature and high salt.
Blocking agent stabilization time prepared by this comparative example is short, cannot inject the deep of oil reservoir oil well, occur agglomeration phenomena too early,
Block near wellbore zone.
Comparative example 2
0.05g resorcinols, 0.1g methenamines are added in 50g tap water, stirs evenly, make fully to dissolve or divides
Dissipate, then by 50g with the degree of hydrolysis that the mass concentration that tap water is prepared is 15% be 20% anionic polyacrylamide solution and
Above-mentioned solution mixing, stirs evenly, will obtain being placed in ampoule bottle at glue, encapsulation process.Then 130 DEG C are placed it in
It in baking oven, places 20,60,90 days respectively, calculates the dehydration rate of frozen glue in ampoule bottle.
1 aqueous gel dehydration rate of table
Frozen glue dehydration is more serious in this comparative example, it will influences its shut-off capacity in the earth formation, makes its shut-off capacity
It is greatly lowered.
Application examples
Shut-off capacity is investigated：
Using the blocking agent after the high-temperature process obtained in " embodiment 1-6 " as research object, stone provided by the present invention is investigated
The shut-off capacity of oleoresin dispersion.Obtained in " comparative example 2 " into glue, as research object, it is stifled investigating polyacrylamide
The shut-off capacity of agent and in this, as comparison.Physical simulation experimentation is as follows：By internal diameter be 2.5cm, length is 20cm seven
Root fill out sand tube fills quartz sand grain and simulation core is made, and is denoted as 1#, 2#, 3#, 4#, 5#, 6#, 7#, water drive to pressure stability respectively
After obtain original permeability k1, then will obtain in the blocking agent and " comparative example 2 " after the high-temperature process in " embodiment 1-6 "
Distinguish in above-mentioned seven fill out sand tube of inverse injection at glue, injected slurry volume is 0.25PV (rock pore volume), is then injected into
0.25PV water is replaced, and (purpose of injection is to replace blocking agent to the middle part of fill out sand tube, the injection under simulation stratum condition
Layer depth portion), seven fill out sand tube are placed in 130 DEG C of baking ovens distinguish aging 30 days and 80 days later, finally respectively water drive to pressure
Stablize, measures the stifled rear permeability k of simulation core2, and press formula E=(k1-k2)/k1* 100%, reservoir core plugging rate E is calculated, it is real
Test that the results are shown in table below.
2 shut-off capacity test data of table
Above the experimental results showed that：Petropols dispersion blocking agent provided by the invention has under 130 DEG C of hot conditions
Excellent sealing characteristics, either its plugging effect after 20 days or the plugging effect after 90 days compared with comparative example 2, not
If Petropols dispersion blocking agent plugging effect of the present invention is good, Petropols dispersion blocking agent has long-term relatively stable closure
Effect.
Claims (10)
1. a kind of high temperature resistant Petropols dispersion blocking agent, including the raw material of following percentage are made：Petropols 5%~
15%, surfactant 0.1%~0.5%, cationic polyacrylamide 0.05%~0.4%, triethanolamine 0.1%~
0.4%, sodium hydrogensulfite 0.1%-0.5%, nano SiO 2 particle 1%~3%, pH adjusting agent 0.1%~0.5% are remaining
Amount is water；The sum of mass percent of each raw material is 100%.
2. high temperature resistant Petropols dispersion blocking agent according to claim 1, which is characterized in that including following percentage
Raw material is made：Petropols 5%~10%, surfactant 0.1%~0.3%, cationic polyacrylamide 0.05%~
0.3%, triethanolamine 0.1%~0.2%, sodium hydrogensulfite 0.15%-0.4%, nano SiO 2 particle 1%~2%, pH
Conditioning agent 0.2%~0.4%, surplus are water；The sum of mass percent of each raw material is 100%.
3. high temperature resistant Petropols dispersion blocking agent according to claim 1, which is characterized in that the Petropols are C5
Or the Petropols of C9, relative molecular mass are 1000~5000, softening point is 100 DEG C~120 DEG C.
4. high temperature resistant Petropols dispersion blocking agent according to claim 1, which is characterized in that the surfactant is
Amphoteric surfactant；Preferably, the surfactant is octadecyldimethyl amine-oxides.
5. high temperature resistant Petropols dispersion blocking agent according to claim 1, which is characterized in that the cation polypropylene
The weight average molecular weight of amide is 700 × 104~800 × 104, cationic degree 20-40%.
6. high temperature resistant Petropols dispersion blocking agent according to claim 1, which is characterized in that the silica nanometer
The grain size of particle is 10-14nm；The pH adjusting agent is sodium hydroxide.
7. high temperature resistant Petropols dispersion blocking agent according to claim 1, which is characterized in that the water is that salinity is
(20-25)×104The water flooding of mg/L, wherein Na+Content is (7-8) × 104mg/L、Ca2+Content be (0.5-1.5) ×
104mg/L、Mg2+Content is (0.1-0.2) × 104mg/L、HCO3 -Content is (0.01-0.02) × 104mg/L、Cl-Content is
(13-14)×104mg/L；Preferably, it is 22.3 × 10 that the water, which is salinity,4The water flooding of mg/L, wherein Na+Content is 7.3
×104mg/L、Ca2+Content is 1.1 × 104mg/L、Mg2+Content is 0.15 × 104mg/L、HCO3 -Content be 0.018 ×
104mg/L、Cl-Content is 13.7 × 104mg/L。
8. such as the preparation method of claim 1-7 any one of them high temperature resistant Petropols dispersion blocking agents, including step：
Surfactant is soluble in water, Petropols powder is added, it is fully dispersed to obtain Petropols dispersion liquid；Cation is poly-
Acrylamide, triethanolamine, sodium hydrogensulfite and pH adjusting agent are soluble in water, and nano SiO 2 particle is added, fully dispersed
Obtain mixed liquor；Mixed liquor and Petropols dispersion liquid are uniformly mixed to get Petropols dispersion blocking agent.
9. the preparation method of high temperature resistant Petropols dispersion blocking agent according to claim 8, which is characterized in that the stone
Oleoresin powder is to use Freezing smashing method, i.e., using liquid nitrogen as low-temperature receiver, it is 0.5 micron~10 that Petropols, which are smashed into grain size,
The powder of micron；
Preferably, the mass concentration of the Petropols dispersion liquid petrochina resin is 25-30%.
10. as claim 1-7 any one of them high temperature resistant Petropols dispersion blocking agents be applied to high-temperature oil reservoir oil well into
Row profile control and water plugging；
Preferably, the application process is：Petropols dispersion blocking agent is injected in high-temperature oil reservoir oil well, with oil reservoir oil well
In temperature from top to bottom gradually rise, the cationic polyacrylamide in Petropols dispersion blocking agent and triethanolamine, Asia
Niter cake generation is sulfonic group modified to be obtained by the reaction sulfonic group modified cationic polyacrylamide, the sulfonic group modified cation
The weight average molecular weight of polyacrylamide is 710 × 104~810 × 104, it can effectively disperse, stablize Petropols suspension,
The heat-resisting quantity, salt-resistance and stability for effectively improving Petropols dispersion blocking agent, to reach Petropols dispersion
Blocking agent injects purpose of the oil reservoir well deep part without blocking near wellbore zone, starts into the Petropols after oil reservoir well deep part soft
Change, which becomes sticky to coalesce, to be blocked water stream channel and achievees the purpose that water blockoff.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499779A (en) * | 2019-01-31 | 2020-08-07 | 中国石油化工股份有限公司 | Sulfonated petroleum resin, preparation method thereof and plugging agent |
| CN112940706A (en) * | 2021-02-03 | 2021-06-11 | 成都劳恩普斯科技有限公司 | Integrated composite acid and preparation method thereof |
| CN112943162A (en) * | 2021-03-19 | 2021-06-11 | 西南石油大学 | Method for rapidly densifying artificial partition plate of gas-water interface of bottom-edge water gas reservoir |
| CN113088269A (en) * | 2019-12-23 | 2021-07-09 | 中石化南京化工研究院有限公司 | Organic-inorganic composite water shutoff agent |
| CN113185959A (en) * | 2021-03-15 | 2021-07-30 | 中海石油（中国）有限公司天津分公司 | Deformed high-temperature-resistant oil-soluble particle steam profile regulator, preparation method and application thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935520A (en) * | 2010-07-19 | 2011-01-05 | 中国海洋石油总公司 | Novel emulsion organic resin selective plugging agent |
| CN106047324A (en) * | 2016-06-30 | 2016-10-26 | 中国石油大学(华东) | Reinforced gel dispersion deep profile control and flooding agent for low-permeability high-temperature high-salt oil reservoirs |
| CN106634906A (en) * | 2016-09-18 | 2017-05-10 | 中国石油大学(华东) | Gel with high temperature resistance |
-
2018
- 2018-05-03 CN CN201810413957.7A patent/CN108531153B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935520A (en) * | 2010-07-19 | 2011-01-05 | 中国海洋石油总公司 | Novel emulsion organic resin selective plugging agent |
| CN106047324A (en) * | 2016-06-30 | 2016-10-26 | 中国石油大学(华东) | Reinforced gel dispersion deep profile control and flooding agent for low-permeability high-temperature high-salt oil reservoirs |
| CN106634906A (en) * | 2016-09-18 | 2017-05-10 | 中国石油大学(华东) | Gel with high temperature resistance |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499779A (en) * | 2019-01-31 | 2020-08-07 | 中国石油化工股份有限公司 | Sulfonated petroleum resin, preparation method thereof and plugging agent |
| CN113088269A (en) * | 2019-12-23 | 2021-07-09 | 中石化南京化工研究院有限公司 | Organic-inorganic composite water shutoff agent |
| CN113088269B (en) * | 2019-12-23 | 2023-01-31 | 中石化南京化工研究院有限公司 | Organic-inorganic composite water shutoff agent |
| CN112940706A (en) * | 2021-02-03 | 2021-06-11 | 成都劳恩普斯科技有限公司 | Integrated composite acid and preparation method thereof |
| CN112940706B (en) * | 2021-02-03 | 2022-07-26 | 成都劳恩普斯科技有限公司 | Integrated composite acid and preparation method thereof |
| CN114907824A (en) * | 2021-02-09 | 2022-08-16 | 中国石油化工股份有限公司 | Phase permeation regulator, preparation method and application thereof |
| CN114907824B (en) * | 2021-02-09 | 2024-05-17 | 中国石油化工股份有限公司 | Phase permeation regulator, preparation method and application thereof |
| CN113185959A (en) * | 2021-03-15 | 2021-07-30 | 中海石油（中国）有限公司天津分公司 | Deformed high-temperature-resistant oil-soluble particle steam profile regulator, preparation method and application thereof |
| CN112943162A (en) * | 2021-03-19 | 2021-06-11 | 西南石油大学 | Method for rapidly densifying artificial partition plate of gas-water interface of bottom-edge water gas reservoir |
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