CN107459983A - Stream particle and preparation method thereof is adjusted in temperature-resistant anti-salt filling - Google Patents
Stream particle and preparation method thereof is adjusted in temperature-resistant anti-salt filling Download PDFInfo
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- CN107459983A CN107459983A CN201710700426.1A CN201710700426A CN107459983A CN 107459983 A CN107459983 A CN 107459983A CN 201710700426 A CN201710700426 A CN 201710700426A CN 107459983 A CN107459983 A CN 107459983A
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- 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
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- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
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Abstract
Filled the present invention relates to a kind of temperature-resistant anti-salt and adjust stream particle, counted in parts by weight, including：Solvent naphtha passes through Ni/ γ Al with Petropols2O365 85 parts of the product obtained after catalyst, 20 50 parts of bentonite, 5 10 parts, N of calcium hydroxide, 0.1 0.5 parts of N methylene-bisacrylamides, 20 50 parts of acrylamide, 0.1 0.5 parts of potassium peroxydisulfate, 5 10 parts of polyurethane, and 30 50 parts of water.This product has the advantages that construction is simple, efficiency high, cost are low, density is low, intensity is high, water swelling speed is slow, heat resistance is good, can realize that the fixed point of deep reservoir is placed, be adapted to fracture-pore reservoir.
Description
Technical field
The present invention relates to oilfield chemical, more particularly to a kind of filling of temperature-resistant anti-salt to adjust stream particle and its preparation side
Method.
Background technology
At present, fracture-pore reservoir water drive failure well is administered both at home and abroad and is in exploratory stage, related agents heat and salt resistance
Difference, it is not yet ripe to administer supporting medicament research for fracture-pore reservoir water drive.
For example, China national patent of invention (A of CN 105065444) discloses a kind of high temperature volume expansion grain blocking agent, wherein
Each raw material forms mass ratio：Acrylamide is 20~50%, and acrylic acid is 20~50%, sodium hydroxide 1~15%, interior firm
Grain is 2~10%, and Ammonium Persulfate 98.5 is 0.1~0.5%, and sodium hydrogensulfite is 0.05%~0.25%, N, N- methylene bisacrylamides
Acid amides is 0.1~0.5%, and lauryl fat is 1~5%, and remaining is water.The high temperature volume expansion grain blocking agent has
Flexible outer layer, propulsion can be deformed in the earth formation, because flexible outer layer is more easily damaged, therefore the high temperature volume expansion grain blocking agent
The shortcomings that with low intensity.
China national patent of invention (CN 1743405A) discloses a kind of agent of hydrophobic hydroexpanding body regulating area, raw material composition matter
It is that deionized water is 40-70% to measure ratio；Acrylamide is 20-50%；Calcium-base bentonite is 4-15%；Alkyl acrylate is 5-
10%；Sodium peroxydisulfate is 0.1-0.5%；N, N- methylene-bisacrylamide are 0.1-0.5%.The product can reduce hydroexpanding body
Hydrophily.Because its water used is deionized water, therefore, equipment cost is added.
China national patent of invention (CN 102181273A) discloses a kind of oil recovery and adjusted with granular volume expansion, is by 25
The acrylamide aqueous solution of~40g 30% bentonite solution and 20~35g 30% is mixed evenly, and adds
The NaOH aqueous solution of 0.2~0.5g sodium sulphate, 0.7~1.2g sodium sulfites and 3.0~6.0ml 40% is sufficiently mixed, stirred
It is even, react 15~30 minutes at room temperature, then be warming up to 50 DEG C of condition constant temperature and stand 3 hours, you can be dried, be granulated, powder
Broken, screening, that is, be made granular volume expansion profile control agent for oil recovery.
China national patent of invention (CN 104371679A) discloses a kind of oil recovery volume expansion grain profile control agent, by quality
Percentages, including：Bentonite 30-60%, perlite 10-30%, Organic Chromium gel 12-30%, calcium carbonate 5-15% are modified
Agent 5-15%, crosslinking agent 10-20%, initiator 5-10%.Wherein, modifying agent is sodium carbonate, and crosslinking agent is acrylic acid, propylene
Nitrile, methyl methacrylate or N, N- methylene-bisacrylamide, initiator are institute's ammonium sulfate, potassium peroxydisulfate or bisulfite
Sodium.It has the advantages of intensity is high, water swelling speed is slow, heat-resist.Because it does not resist to volume expansion grain profile control agent
Salt is studied, and therefore, the volume expansion grain profile control agent application is narrow.
China national patent of invention (CN 103626917A) discloses a kind of heavy crude heat extraction closure channeling volume expansion grain
Preparation method, using following steps：The polymerized monomer aqueous solution by mass concentration for 20-60%, multiple crosslinking agent, initiator,
Add in reactor, 2-3h is reacted at 55-75 DEG C and obtains polymer blob of viscose, by polymer blob of viscose extruding pelletization, after dries pulverizing
Obtain heavy crude heat extraction closure channeling volume expansion grain.Because the volume expansion grain is in order to block channeling, it is thus impossible to be used for
Solve in water breakthrough problem caused by exploitation high temperature and high salt harsh conditions oil reservoir,
China national patent of invention (CN 104498005A) disclose a kind of micron order hydroexpanding body suspension profile control agent and
Preparation method, the profile control agent include the raw material of following parts by weight：Calcium chloride, 50~650 parts；Trimethyl chlorination
Ammonium, 5~20 parts；Dimethicone, 0.5~1 part；Micron order hydroexpanding body, 500~800 parts；Water, 1000 parts.It provides micro-
Meter level hydroexpanding body suspension profile control agent, it is therefore an objective to do not produce dust when using at the scene, reduce to operator's health and environment
Influence.
Therefore, for solve exploitation high temperature and high salt harsh conditions oil reservoir caused by water breakthrough problem, study a kind of temperature-resistant anti-salt
The tune stream particle of filling is significant.
The content of the invention
The defects of in order to overcome prior art, the invention provides a kind of tune stream particle of temperature-resistant anti-salt filling and its preparation
Method.
Stream particle is adjusted in a kind of temperature-resistant anti-salt filling of the present invention, is counted in parts by weight, including：Solvent naphtha passes through with Petropols
Cross Ni/ γ-Al2O3The product 65-85 parts obtained after catalyst, bentonite 20-50 parts, calcium hydroxide 5-10 parts, N, N- are sub-
Bisacrylamide 0.1-0.5 parts, acrylamide 20-50 parts, potassium peroxydisulfate 0.1-0.5 parts, polyurethane 5-10 parts, and water
30-50 parts.
Stream particle is adjusted in foregoing temperature-resistant anti-salt filling, is counted in parts by weight, including：Solvent naphtha passes through Ni/ with Petropols
γ-Al2O3The product 70-80 parts obtained after catalyst, bentonite 30-40 parts, calcium hydroxide 6-8 parts, N, N- di-2-ethylhexylphosphine oxides
Acrylamide 0.2-0.4 parts, acrylamide 30-40 parts, potassium peroxydisulfate 0.2-0.4 parts, polyurethane 6-8 parts, and water 35-45 parts；
Preferably, count in parts by weight, the temperature-resistant anti-salt filling adjusts stream particle to include：Solvent naphtha passes through with Petropols
Ni/γ-Al2O375 parts of the product obtained after catalyst, 35 parts of bentonite, 7 parts, N of calcium hydroxide, N- methylene bisacrylamides
0.3 part of acid amides, 35 parts of acrylamide, 0.3 part of potassium peroxydisulfate, 7 parts of polyurethane, and 40 parts of water.
Stream particle is adjusted in foregoing temperature-resistant anti-salt filling, is counted in parts by weight, 50-60 parts solvent naphtha and 15-25 part oil trees
Fat uses 5-10 part Ni/ γ-Al2O3Catalyst is catalyzed.
Foregoing polyurethane is thermoplastic polyurethane.
Foregoing Petropols are C9 Petropols or C5 Petropols.
The a diameter of 0.1-10mm, most preferably preferably 0.5-6mm, 2- of stream particle are adjusted in foregoing temperature-resistant anti-salt filling
4mm。
It is 5-20 times that the expansion multiple of stream particle is adjusted in foregoing temperature-resistant anti-salt filling.
It is 1.05-1.12g/cm that the real density of stream particle is adjusted in foregoing temperature-resistant anti-salt filling3。
The preparation method for adjusting stream particle is filled present invention also offers a kind of temperature-resistant anti-salt, is comprised the following steps：
1) water and bentonite are added in agitator tank, after being well mixed, calcium hydroxide is added, is sufficiently stirred；
2) acrylamide is added, inflated with nitrogen is protected after being heated to 50-70 DEG C；
3) N is added, N- methylene-bisacrylamides, polyurethane, potassium peroxydisulfate is added after being stirred and heated to 110-130 DEG C,
Constant temperature 1-5 hours；
4) solvent naphtha is added with Petropols by Ni/ γ-Al2O3Product after catalyst, 180-240 DEG C of constant temperature stir
Mix；
5) dry, crush.
The temperature-resistant anti-salt filling of the present invention adjusts stream particle to have the advantages that：
(1) product of the present invention be a kind of elastic irregular particle, particle diameter between 0.5mm to 6mm, expansion multiple exists
More than 5 times, sealing ratiod is improved, shaft bottom is avoided and nearby blocks；
(2) product real density of the present invention is in 1.05g/cm3To 1.12g/cm3Between, it is possible to achieve adjust stream in deep；
(3) product of the present invention disclosure satisfy that 120-140 DEG C of formation temperature, salinity 16-22 × 104Mg/L reservoir conditions,
And effective time reaches more than half a year；
(4) product expansion rate of the present invention is more than 24 hours.
In addition, the product has, construction is simple, efficiency high, cost are low, density is low, intensity is high, water swelling speed is slow, resistance to
The advantages that hot good, and can realize that deep reservoir fixed point is placed, it is adapted to fracture-pore reservoir, not only efficiently solves fracture hole
In the exploitation of type reservoir water drive due to recovery ratio is low caused by water breakthrough the problem of, also have to the exploitation of domestic and international fracture-pore reservoir stronger
Directive significance.
Embodiment
In order to be fully understood by the purpose of the present invention, feature and effect, by following embodiments, the present invention is made detailed
Describe in detail bright.For the process of the present invention in addition to the description below, remaining uses the conventional method or device of this area.Following nouns
Term is unless otherwise stated, be respectively provided with the implication that those skilled in the art are generally understood that.
Mainly using solution cavity, crack as mainly the flowing space is preserved, main blocks are buried for fracture-pore reservoir exploitation at present
Depth 5400-6900m, strata pressure 62-69MPa, 120-140 DEG C of temperature, stratum water total salinity 16-22 × 104Mg/L, its
Middle calcium ions and magnesium ions content 1 × 104mg/L.Exploitation for this type oil reservoir, water breakthrough are the main exploitation problems faced, specifically
Including following problem：(1) water filling is unidirectionally small by effect scope in plane；(2) water filling difference is big on longitudinal direction, and development degree is low；(3) press
Power is unbalanced, causes inefficient water injection.For these problems, inventor have developed a kind of temperature-resistant anti-salt filling and adjust stream particle and its system
Preparation Method, 120-140 DEG C is can adapt to, stratum water total salinity 16-22 × 104Under more than mg/L reservoir condition, realize deep
Portion's oil reservoir fixed point is placed, and is employed fracture-pore reservoir remaining oil, is improved recovery ratio, and technical support is provided for fracture-pore reservoir exploitation.
According to an aspect of the present invention, filled the invention provides a kind of temperature-resistant anti-salt and adjust stream particle, in parts by weight
Meter, including：Solvent naphtha passes through Ni/ γ-Al with Petropols2O3The product 65-85 parts obtained after catalyst, bentonite 20-
50 parts, calcium hydroxide 5-10 parts, N, N- methylene-bisacrylamide 0.1-0.5 parts, acrylamide 20-50 parts, potassium peroxydisulfate
0.1-0.5 parts, polyurethane 5-10 parts, and water 30-50 parts；Preferably, including：Solvent naphtha passes through Ni/ γ-Al with Petropols2O3
The product 70-80 parts obtained after catalyst, bentonite 30-40 parts, calcium hydroxide 6-8 parts, N, N- methylene bisacrylamide acyls
Amine 0.2-0.4 parts, acrylamide 30-40 parts, potassium peroxydisulfate 0.2-0.4 parts, polyurethane 6-8 parts, and water 30-50 parts；More preferably
Ground, including：Solvent naphtha passes through Ni/ γ-Al with Petropols2O375 parts of the product obtained after catalyst, 35 parts of bentonite,
7 parts, N of calcium hydroxide, 0.3 part of N- methylene-bisacrylamides, 35 parts of acrylamide, 0.3 part of potassium peroxydisulfate, 7 parts of polyurethane, and
40 parts of water.
Solvent naphtha is the mixture of various structure hydro carbons, is one of five major class oil products.The solvent naphtha that the present invention uses
Can be D40 solvent naphthas, it is using distillate as raw material, refines aftercut by 130kPa high-pressure hydrogenations and forms.The present invention is right
D40 solvent naphthas do not have particular/special requirement, and the D40 solvent naphthas of conventional commercial are used equally in the present invention.
Petropols are the one kind of C5, C9 cut through technique productions such as pre-treatment, polymerization, distillations of petroleum cracking institute by-product
Thermoplastic resin.The present invention can use C9 Petropols and C5 Petropols.Wherein, C9 Petropols are with comprising nine carbon originals
The resinous material of " alkene or cycloolefin are polymerize or formed with copolymerization such as aldehydes, aromatic hydrocarbons, terpene compounds " of son.C5
Petropols are also known as light dydrocarbon resin, aliphatic hydrocarbon resin, are the faint yellow or light brown pieces that a kind of mean molecule quantity is 1000-2500
Shape or granular solids.The C9 Petropols and C5 Petropols of conventional commercial are used equally in the present invention.
Polyurethane is the linear polymer of main chain constitutional repeating unit Han-NHCOO-, and the polyurethane that the present invention uses is preferred
It is thermoplastic polyurethane, its molecular weight is 200000-800000.The thermoplastic polyurethane that the present invention uses can be by conventional purchased in market
Obtain.
The present invention is to bentonite, calcium hydroxide, N, N- methylene-bisacrylamides, acrylamide, potassium peroxydisulfate and Ni/
γ-Al2O3Catalyst does not have particular/special requirement, and the product of conventional commercial is used equally in the present invention.
Ni/ γ-Al are used for solvent naphtha and Petropols2O3For catalyst is catalyzed, the present invention uses 50-60
Parts by weight solvent oil is with 15-25 parts by weight Petropols with 5-10 parts by weight Ni/ γ-Al2O3Catalyst is catalyzed.
The present invention makes to produce collaboration effect between each component by the way that said components are combined according to above-mentioned special ratios
Fruit.Specifically, solvent naphtha passes through Ni/ γ-Al with Petropols2O3The product obtained after catalyst plays delayed expansion
Effect, and one of core of the present invention, the volume expansion grain Bulking Time of market is too fast at present (expands substantially complete in 30min
Into), and the present invention filling adjust stream particle expansion rate can reach more than 24 hours, specific expansion rate because solvent naphtha with
Petropols pass through Ni/ γ-Al2O3The content of the product obtained after catalyst and formation temperature it is different and different；Swelling
Soil plays water suction water and cementing effect；Calcium hydroxide is the initiator of polymerisation；N, N- methylene-bisacrylamide
Primarily serve crosslinked action；Acrylamide can adjust absorbent time；Potassium peroxydisulfate is the initiator of polymerisation；Polyurethane rises
Acted on to support.
The present invention filling adjust stream particle be a kind of elastic irregular particle, particle diameter between 0.5mm to 6mm,
Expansion multiple more than 5 times (such as 5-20 times), improves sealing ratiod, avoids shaft bottom and nearby blocks.
Product real density of the present invention is in 1.05g/cm3To 1.12g/cm3Between, it is possible to achieve adjust stream in deep.
Product of the present invention disclosure satisfy that 120 DEG C of formation temperature, salinity 20 × 104More than mg/L reservoir conditions, and effectively
Time reaches more than half a year.
According to another aspect of the present invention, the preparation side for adjusting stream particle is filled present invention also offers above-mentioned temperature-resistant anti-salt
Method, comprise the following steps：
1) according to aforementioned proportion, water and bentonite are added in agitator tank, after being well mixed, adds calcium hydroxide, fully
Stirring；
2) according to aforementioned proportion, acrylamide is added, inflated with nitrogen is protected after being heated to 50-70 DEG C；
3) according to aforementioned proportion, N, N- methylene-bisacrylamides, polyurethane, after being stirred and heated to 110-130 DEG C are added
Add potassium peroxydisulfate, constant temperature 1-5 hours；
4) according to aforementioned proportion, solvent naphtha is added with Petropols by Ni/ γ-Al2O3Product after catalyst, it is permanent
Warm 180-240 DEG C, stir to well mixed；
5) dry, be crushed to particle diameter and be no more than 6mm.
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.The experimental method of unreceipted actual conditions in the following example, conventionally and condition.
Each component in above-mentioned high temperature volume expansion grain blocking agent and preparation method thereof is commercially available prod, described hydroxide
Calcium, N, N- methylene-bisacrylamides, acrylamide, potassium peroxydisulfate are that chemistry is pure.
Embodiment 1
The present embodiment temperature-resistant anti-salt filling adjust stream particle composition be：D40 solvent naphthas and Petropols by Ni/ γ-
Al2O3The product obtained after catalyst 75 parts (weight), 35 parts of bentonite, 7 parts, N of calcium hydroxide, N- methylene bisacrylamides
0.3 part of acid amides, 35 parts of acrylamide, 0.3 part of potassium peroxydisulfate, 7 parts of polyurethane, and 40 parts of water.Wherein, D40 solvent naphthas and oil
The ratio of resin is 55 parts：20 parts, using 8 parts of Ni/ γ-Al2O3Catalyst is catalyzed.
Preparation method is：
Clear water and bentonite are added first in agitator tank, calcium hydroxide is then added, acryloyl is added after being sufficiently stirred
Amine, nitrogen charging gas shielded after being heated to 60 DEG C, N, N- methylene-bisacrylamides, polyurethane, was added after being stirred and heated to 120 DEG C
Potassium sulfate, constant temperature 2 hours, D40 solvent naphthas, Petropols are then passed through into Ni/ γ-Al2O3Product after catalyst adds, permanent
200 DEG C of stirrings of temperature, drying are then comminuted into, and stream particle is adjusted in the temperature-resistant anti-salt filling that the present embodiment is made.
Embodiment 2-5
Embodiment 2-5 temperature-resistant anti-salt filling adjusts the composition of stream particle as shown in table 1.In embodiment 2 and 3, D40 solvent naphthas
Ratio with Petropols is 50 parts：15 parts, using 5 parts of Ni/ γ-Al2O3Catalyst is catalyzed.In embodiment 4 and 5, D40
The ratio of solvent naphtha and Petropols is 60 parts：25 parts, using 10 parts of Ni/ γ-Al2O3Catalyst is catalyzed.Embodiment 2-5
Temperature-resistant anti-salt filling adjust stream particle preparation method it is same as Example 1.
By the product of the present invention in 130 DEG C of simulated formation temperature, salinity 20 × 104Surveyed under mg/L reservoir condition
Examination, the temperature-resistant anti-salt filling of each embodiment adjust the Specifeca tion speeification of stream particle as shown in table 2.
Each component content (the unit of stream particle is adjusted in temperature-resistant anti-salt filling in the embodiment 2-5 of table 1：Parts by weight)
The Specifeca tion speeification of stream particle is adjusted in the embodiment 1-5 of table 2 temperature-resistant anti-salt filling
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Density (g/cm3) | 1.06 | 1.12 | 1.10 | 1.05 | 1.07 |
| Expansion multiple | 19 | 16 | 11 | 9 | 7 |
| Expansion rate (h) | 28 | 27 | 30 | 25 | 32 |
| Effective time (moon) | 11 | 9 | 10 | 9 | 8 |
By the result of table 2 can be seen that the present invention temperature-resistant anti-salt filling adjust stream particle have density is low, intensity is high,
The advantages that expansion rate is slow, its expansion multiple improve sealing ratiod more than 5 times, avoid shaft bottom and nearby block.
The present invention is hereinbefore disclosed with preferred embodiment, but it should be understood by those skilled in the art that, these
Embodiment is only used for describing the present invention, and should not be construed as limiting the scope of the present invention.It should be noted that every implement with these
Example equivalent change and displacement, all should be set to be covered by scope of the presently claimed invention.Therefore, protection scope of the present invention
It should be defined by the scope defined in claims.
Claims (9)
1. stream particle is adjusted in a kind of temperature-resistant anti-salt filling, it is characterised in that count in parts by weight, including：Solvent naphtha and Petropols
By Ni/ γ-Al2O3The product 65-85 parts obtained after catalyst, bentonite 20-50 parts, calcium hydroxide 5-10 parts, N, N-
Methylene-bisacrylamide 0.1-0.5 parts, acrylamide 20-50 parts, potassium peroxydisulfate 0.1-0.5 parts, polyurethane 5-10 parts, and water
30-50 parts.
2. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 1, it is characterised in that count in parts by weight, including：It is molten
Agent oil passes through Ni/ γ-Al with Petropols2O3The product 70-80 parts obtained after catalyst, bentonite 30-40 parts, hydrogen-oxygen
Change calcium 6-8 parts, N, N- methylene-bisacrylamide 0.2-0.4 parts, acrylamide 30-40 parts, potassium peroxydisulfate 0.2-0.4 parts, gather
Urethane 6-8 parts, and water 35-45 parts；
Preferably, count in parts by weight, the temperature-resistant anti-salt filling adjusts stream particle to include：Solvent naphtha passes through Ni/ with Petropols
γ-Al2O375 parts of the product obtained after catalyst, 35 parts of bentonite, 7 parts, N of calcium hydroxide, N- methylene-bisacrylamides
0.3 part, 35 parts of acrylamide, 0.3 part of potassium peroxydisulfate, 7 parts of polyurethane, and 40 parts of water.
3. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 1 or 2, it is characterised in that is counted in parts by weight, 50-
60 parts of solvent naphthas use 5-10 part Ni/ γ-Al with 15-25 parts Petropols2O3Catalyst is catalyzed.
4. stream particle is adjusted in the temperature-resistant anti-salt filling according to claim any one of 1-3, it is characterised in that the polyurethane is
Thermoplastic polyurethane.
5. stream particle is adjusted in the temperature-resistant anti-salt filling according to claim any one of 1-4, it is characterised in that the Petropols
For C9 Petropols or C5 Petropols.
6. stream particle is adjusted in the temperature-resistant anti-salt filling according to claim any one of 1-5, it is characterised in that temperature-resistant anti-salt is filled
Adjust a diameter of 0.1-10mm, most preferably preferably 0.5-6mm, 2-4mm of stream particle.
7. stream particle is adjusted in the temperature-resistant anti-salt filling according to claim any one of 1-6, it is characterised in that temperature-resistant anti-salt is filled
The expansion multiple for adjusting stream particle is 5-20 times.
8. stream particle is adjusted in the temperature-resistant anti-salt filling according to claim any one of 1-7, it is characterised in that temperature-resistant anti-salt is filled
The real density for adjusting stream particle is 1.05-1.12g/cm3。
9. the preparation method of stream particle is adjusted in a kind of temperature-resistant anti-salt filling, it is characterised in that is comprised the following steps：
1) water and bentonite are added in agitator tank, after being well mixed, calcium hydroxide is added, is sufficiently stirred；
2) acrylamide is added, inflated with nitrogen is protected after being heated to 50-70 DEG C；
3) N is added, N- methylene-bisacrylamides, polyurethane, potassium peroxydisulfate, constant temperature are added after being stirred and heated to 110-130 DEG C
1-5 hours；
4) solvent naphtha is added with Petropols by Ni/ γ-Al2O3Product after catalyst, 180-240 DEG C of stirring of constant temperature；
5) dry, crush.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109280543A (en) * | 2018-10-31 | 2019-01-29 | 中国石油化工股份有限公司西北油田分公司 | Oil-soluble coating particles tune stream agent and its preparation method and application |
| 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 |
| CN114437700A (en) * | 2020-10-20 | 2022-05-06 | 中国石油化工股份有限公司 | Temperature-resistant and salt-resistant flow regulating agent suitable for fracture-cavity oil reservoir and preparation method and application thereof |
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