CN107459983B - 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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- CN107459983B CN107459983B CN201710700426.1A CN201710700426A CN107459983B CN 107459983 B CN107459983 B CN 107459983B CN 201710700426 A CN201710700426 A CN 201710700426A CN 107459983 B CN107459983 B CN 107459983B
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Abstract
It is filled the present invention relates to a kind of temperature-resistant anti-salt and adjusts stream particle, according to parts by weight, comprising: solvent naphtha and Petropols pass through Ni/ γ-Al2O365-85 parts of the product obtained after catalyst, 20-50 parts of bentonite, 5-10 parts of calcium hydroxide, N, 0.1-0.5 parts of N- methylene-bisacrylamide, 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 many advantages, such as that construction is simple, high-efficient, at low cost, density is low, intensity is high, water swelling rate is slow, heat resistance is good, and the fixed point that can be realized deep reservoir is placed, and is suitble to fracture-pore reservoir.
Description
Technical field
The present invention relates to oilfield chemicals more particularly to a kind of filling of temperature-resistant anti-salt to adjust stream particle and its preparation side
Method.
Background technique
Currently, being in exploratory stage, related agents heat and salt resistance to the failure well improvement of fracture-pore reservoir water drive both at home and abroad
It is not yet mature to administer mating medicament research for fracture-pore reservoir water drive for difference.
For example, China national patent of invention (105065444 A of CN) discloses a kind of high temperature volume expansion grain blocking agent, wherein
Each raw material forms mass ratio are as follows: and acrylamide is 20~50%, and acrylic acid is 20~50%, sodium hydroxide 1~15%, interior rigid
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 bisacrylamide
Amide is 0.1~0.5%, and lauryl rouge is 1~5%, remaining is water.The high temperature volume expansion grain blocking agent has
Flexible outer layer can deform propulsion in the earth formation, since flexible outer layer is more easily damaged, the high temperature volume expansion grain blocking agent
Have the shortcomings that intensity is low.
China national patent of invention (CN 1743405A) discloses a kind of agent of hydrophobic hydroexpanding body regulating area, and raw material forms matter
Amount is 40-70% than being deionized water；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.Since its water used is deionized water, increase equipment cost.
China national patent of invention (CN 102181273A) discloses a kind of oil recovery and is adjusted with granular volume expansion, is by 25
The bentonite solution of~40g 30% and the acrylamide aqueous solution of 20~35g 30% are mixed evenly, and add
The NaOH aqueous solution of 0.2~0.5g sodium sulphate, 0.7~1.2g sodium sulfite and 3.0~6.0ml 40% is sufficiently mixed, stirs
It is even, it reacts 15~30 minutes at room temperature, then be warming up to 50 DEG C of condition constant temperature and stand 3 hours, can be dried, be granulated, powder
Broken, screening, obtains 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, comprising: 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 that intensity is high, water swelling rate is slow, heat-resist.Since it does not resist volume expansion grain profile control agent
Salt is studied, and therefore, the volume expansion grain profile control agent application range is narrow.
China national patent of invention (CN 103626917A) discloses a kind of heavy crude heat extraction and blocks channeling volume expansion grain
Preparation method uses following steps: by mass concentration for the polymerized monomer aqueous solution of 20-60%, multiple crosslinking agent, and initiator,
It is added in reaction kettle, 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
It obtains heavy crude heat extraction and blocks channeling volume expansion grain.Since the volume expansion grain is in order to block channeling, it is thus impossible to be used to
The water breakthrough problem generated when developing high temperature and high salt harsh conditions oil reservoir is solved,
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, and 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 not generate dust when using at the scene, reduce to operator's health and environment
Influence.
Therefore, to solve the water breakthrough problem generated in exploitation high temperature and high salt harsh conditions oil reservoir, a kind of temperature-resistant anti-salt is studied
The tune stream particle of filling is of great significance.
Summary of the invention
In order to overcome the drawbacks of the prior art, the present invention provides a kind of tune stream particle of temperature-resistant anti-salt filling and its preparations
Method.
Stream particle is adjusted in a kind of temperature-resistant anti-salt filling of the invention, according to parts by weight, comprising: solvent naphtha and Petropols pass through
Cross Ni/ γ-Al2O365-85 parts of the product obtained after catalyst, 20-50 parts of bentonite, 5-10 parts of calcium hydroxide, N, N- are sub-
0.1-0.5 parts of bisacrylamide, 20-50 parts of acrylamide, 0.1-0.5 parts of potassium peroxydisulfate, 5-10 parts of polyurethane and water
30-50 parts.
Stream particle is adjusted in temperature-resistant anti-salt filling above-mentioned, according to parts by weight, comprising: solvent naphtha and Petropols pass through Ni/
γ-Al2O370-80 parts of the product obtained after catalyst, 30-40 parts of bentonite, 6-8 parts of calcium hydroxide, N, N- di-2-ethylhexylphosphine oxide
0.2-0.4 parts of acrylamide, 30-40 parts of acrylamide, 0.2-0.4 parts of potassium peroxydisulfate, 6-8 parts of polyurethane and 35-45 parts of water；
Preferably, according to parts by weight, it includes: that solvent naphtha and Petropols pass through that stream particle is adjusted in the temperature-resistant anti-salt filling
Ni/γ-Al2O375 parts of the product obtained after catalyst, 35 parts of bentonite, 7 parts of calcium hydroxide, N, N- methylene bisacrylamide
0.3 part of amide, 35 parts of acrylamide, 0.3 part of potassium peroxydisulfate, 7 parts of polyurethane and 40 parts of water.
Stream particle, according to parts by weight, 50-60 parts of solvent naphthas and 15-25 parts of petroleum trees are adjusted in temperature-resistant anti-salt filling above-mentioned
Rouge uses 5-10 parts of Ni/ γ-Al2O3Catalyst is catalyzed.
Polyurethane above-mentioned is thermoplastic polyurethane.
Petropols above-mentioned are C9 Petropols or C5 Petropols.
It is 0.1-10mm, preferably 0.5-6mm, most preferably 2- that the diameter of stream particle is adjusted in temperature-resistant anti-salt filling above-mentioned
4mm。
It is 5-20 times that the expansion multiple of stream particle is adjusted in temperature-resistant anti-salt filling above-mentioned.
It is 1.05-1.12g/cm that the real density of stream particle is adjusted in temperature-resistant anti-salt filling above-mentioned3。
The preparation method for adjusting stream particle is filled the present invention also provides a kind of temperature-resistant anti-salt, comprising the following steps:
1) water and bentonite are added in agitator tank, after mixing, 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, potassium peroxydisulfate is added after being stirred and heated to 110-130 DEG C in N- methylene-bisacrylamide, polyurethane,
Constant temperature 1-5 hours；
4) solvent naphtha and Petropols is added by Ni/ γ-Al2O3Product after catalyst, 180-240 DEG C of constant temperature is stirred
It mixes；
5) it dries, crush.
Temperature-resistant anti-salt filling of the invention adjusts stream particle to have the following beneficial effects:
(1) product of the present invention is a kind of elastic irregular particle, particle diameter between 0.5mm to 6mm, and expansion multiple exists
5 times or more, sealing ratiod is improved, shaft bottom is avoided and nearby blocks；
(2) product of the present invention real density is in 1.05g/cm3To 1.12g/cm3Between, deep tune stream may be implemented；
(3) product of the present invention can satisfy 120-140 DEG C of formation temperature, salinity 16-22 × 104Mg/L reservoir condition,
And effective time reaches more than half a year；
(4) product of the present invention expansion rate was at 24 hours or more.
In addition, the product has, construction is simple, high-efficient, at low cost, density is low, intensity is high, water swelling rate is slow, resistance to
The advantages that hot good, and can be realized deep reservoir fixed point and place, it is suitble to fracture-pore reservoir, not only efficiently solves fracture hole
The low problem of the recovery ratio due to caused by water breakthrough in the exploitation of type reservoir water drive also has the exploitation of domestic and international fracture-pore reservoir relatively strong
Directive significance.
Specific embodiment
In order to fully understand the purpose of the present invention, feature and effect, by following specific embodiments, the present invention is made detailed
It describes in detail bright.For process of the invention in addition to following the description, remaining is all made of the conventional method or device of this field.Following nouns
Term is unless otherwise stated, all have the normally understood meaning of those skilled in the art.
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, water flooding total salinity 16-22 × 104Mg/L,
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) being filled the water in plane unidirectionally small by effect range；(2) water filling difference is big on longitudinal direction, and development degree is low；(3) it presses
Power is unbalanced, causes inefficient water injection.For these problems, inventor has developed a kind of filling of temperature-resistant anti-salt and adjusts stream particle and its system
Preparation Method can adapt to 120-140 DEG C, water flooding total salinity 16-22 × 104Under the reservoir condition of mg/L or more, realize deep
Oil reservoir fixed point in portion's is placed, and fracture-pore reservoir remaining oil is employed, and improves recovery ratio, provides technical support for fracture-pore reservoir exploitation.
According to an aspect of the present invention, it is filled the present invention provides a kind of temperature-resistant anti-salt and adjusts stream particle, in parts by weight
Meter, comprising: solvent naphtha and Petropols pass through Ni/ γ-Al2O365-85 parts of the product obtained after catalyst, bentonite 20-
50 parts, 5-10 parts of calcium hydroxide, N, 0.1-0.5 parts of N- methylene-bisacrylamide, 20-50 parts of acrylamide, potassium peroxydisulfate
0.1-0.5 parts, 5-10 parts of polyurethane and 30-50 parts of water；Preferably, comprising: solvent naphtha and Petropols pass through Ni/ γ-Al2O3
70-80 parts of the product obtained after catalyst, 30-40 parts of bentonite, 6-8 parts of calcium hydroxide, N, N- methylene bisacrylamide acyl
0.2-0.4 parts of amine, 30-40 parts of acrylamide, 0.2-0.4 parts of potassium peroxydisulfate, 6-8 parts of polyurethane and 30-50 parts of water；More preferably
Ground, comprising: solvent naphtha and Petropols pass through Ni/ γ-Al2O375 parts of the product obtained after catalyst, 35 parts of bentonite,
7 parts of calcium hydroxide, N, 0.3 part of N- methylene-bisacrylamide, 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
It can be D40 solvent naphtha, be to be formed using distillate as raw material by 130kPa high-pressure hydrogenation purification aftercut.The present invention couple
D40 solvent naphtha does not have particular/special requirement, and the D40 solvent naphtha of conventional commercial is used equally in the present invention.
Petropols are one kind that C5, C9 fraction of petroleum cracking institute by-product are produced through techniques such as pre-treatment, polymerization, distillations
Thermoplastic resin.C9 Petropols and C5 Petropols can be used in the present invention.Wherein, C9 Petropols are comprising nine carbon originals
The resinous material of " alkene or cycloolefin carry out polymerization or form with copolymerization such as aldehydes, aromatic hydrocarbons, terpene compounds " of son.C5
Petropols are also known as light dydrocarbon resin, aliphatic hydrocarbon resin, are a kind of faint yellow or light brown pieces that average molecular weight 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, molecular weight is 200000-800000.The thermoplastic polyurethane that the present invention uses can pass through regular market purchase
It obtains.
The present invention is to bentonite, calcium hydroxide, N, N- methylene-bisacrylamide, 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 is used for solvent naphtha and Petropols2O3For catalyst is catalyzed, the present invention uses 50-60
Parts by weight solvent oil and 15-25 parts by weight Petropols are with 5-10 parts by weight Ni/ γ-Al2O3Catalyst is catalyzed.
The present invention makes to generate collaboration effect between each component by being combined said components according to above-mentioned special ratios
Fruit.Specifically, solvent naphtha and Petropols pass through Ni/ γ-Al2O3The product obtained after catalyst plays delayed expansion
One of effect and core of the invention, the volume expansion grain Bulking Time of market is too fast at present (expands substantially complete in 30min
At), and filling of the invention adjusts the expansion rate of stream particle that can reach 24 hours or more, specific expansion rate because solvent naphtha with
Petropols pass through Ni/ γ-Al2O3The content of the product obtained after catalyst and the difference of formation temperature and it is different；Swelling
Soil plays water suction water and cementing effect；Calcium hydroxide is the initiator of polymerization reaction；N, N- methylene-bisacrylamide
Primarily serve crosslinked action；The adjustable absorbent time of acrylamide；Potassium peroxydisulfate is the initiator of polymerization reaction；Polyurethane rises
It is acted on to bracket.
It is a kind of elastic irregular particle, particle diameter between 0.5mm to 6mm that stream particle is adjusted in filling of the invention,
Expansion multiple improves sealing ratiod at 5 times or more (such as 5-20 times), avoids shaft bottom and nearby blocks.
Product of the present invention real density is in 1.05g/cm3To 1.12g/cm3Between, deep tune stream may be implemented.
Product of the present invention can satisfy 120 DEG C of formation temperature, salinity 20 × 104Mg/L or more reservoir condition, 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 the present invention also provides above-mentioned temperature-resistant anti-salt
Method includes the following steps:
1) according to aforementioned proportion, water and bentonite are added in agitator tank, after mixing, calcium hydroxide is added, sufficiently
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-bisacrylamide, polyurethane, after being stirred and heated to 110-130 DEG C is added
Addition potassium peroxydisulfate, constant temperature 1-5 hours；
4) according to aforementioned proportion, solvent naphtha and Petropols is added by Ni/ γ-Al2O3Product after catalyst, it is permanent
It warm 180-240 DEG C, stirs to uniformly mixed；
5) it dries, be crushed to partial size 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 the reality
It applies among a range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions.
Each component in above-mentioned high temperature volume expansion grain blocking agent and preparation method thereof is commercial product, the hydroxide
Calcium, N, N- methylene-bisacrylamide, acrylamide, potassium peroxydisulfate are that chemistry is pure.
Embodiment 1
The composition of the temperature-resistant anti-salt filling tune stream particle of the present embodiment is: D40 solvent naphtha and Petropols are by Ni/ γ-
Al2O375 parts of the product obtained after catalyst (weight), 35 parts of bentonite, 7 parts of calcium hydroxide, N, N- methylene bisacrylamide
0.3 part of amide, 35 parts of acrylamide, 0.3 part of potassium peroxydisulfate, 7 parts of polyurethane and 40 parts of water.Wherein, D40 solvent naphtha and petroleum
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-bisacrylamide, polyurethane were added after being stirred and heated to 120 DEG C
D40 solvent naphtha, Petropols constant temperature 2 hours, are then passed through Ni/ γ-Al by potassium sulfate2O3Product after catalyst is added, 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
The temperature-resistant anti-salt filling of embodiment 2-5 adjusts the composition of stream particle as shown in table 1.In embodiment 2 and 3, D40 solvent naphtha
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 product of the invention in 130 DEG C of simulated formation temperature, salinity 20 × 104It is surveyed under the reservoir condition of mg/L
The temperature-resistant anti-salt filling of examination, each embodiment adjusts the Specifeca tion speeification of stream particle as shown in table 2.
The each component content (unit: parts by weight) of stream particle is adjusted in temperature-resistant anti-salt filling in 1 embodiment 2-5 of table
The Specifeca tion speeification of stream particle is adjusted in the temperature-resistant anti-salt filling of 2 embodiment 1-5 of table
| 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 temperature-resistant anti-salt filling of the invention adjust stream particle have density is low, intensity is high,
The advantages that expansion rate is slow, expansion multiple improve sealing ratiod at 5 times or more, 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, but should not be understood as limiting the scope of the invention.It should be noted that all implement with these
Example equivalent variation and displacement, should all be set as being covered by scope of the presently claimed invention.Therefore, protection scope of the present invention
It should be subject to range defined in claims.
Claims (10)
1. stream particle is adjusted in a kind of temperature-resistant anti-salt filling, which is characterized in that according to parts by weight, comprising: solvent naphtha and Petropols
By Ni/ γ-Al2O365-85 parts of the product obtained after catalyst, 20-50 parts of bentonite, 5-10 parts of calcium hydroxide, N, N-
0.1-0.5 parts of methylene-bisacrylamide, 20-50 parts of acrylamide, 0.1-0.5 parts of potassium peroxydisulfate, 5-10 parts of polyurethane and water
30-50 parts；
Wherein, according to parts by weight, 50-60 parts of solvent naphthas use 5-10 parts of Ni/ γ-Al with 15-25 parts of Petropols2O3Catalysis
Agent is catalyzed；
Wherein, temperature-resistant anti-salt filling adjust stream particle the preparation method comprises the following steps:
1) water and bentonite are added in agitator tank, after mixing, 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, potassium peroxydisulfate, constant temperature is added in N- methylene-bisacrylamide, polyurethane after being stirred and heated to 110-130 DEG C
1-5 hours；
4) solvent naphtha and Petropols is added by Ni/ γ-Al2O3Product after catalyst, 180-240 DEG C of constant temperature stirring；
5) it dries, crush.
2. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 1, which is characterized in that according to parts by weight, comprising: molten
Agent oil and Petropols pass through Ni/ γ-Al2O370-80 parts of the product obtained after catalyst, 30-40 parts of bentonite, hydrogen-oxygen
Change calcium 6-8 parts, N, 0.2-0.4 parts of N- methylene-bisacrylamide, 30-40 parts of acrylamide, 0.2-0.4 parts of potassium peroxydisulfate, gathers
6-8 parts of urethane and 35-45 parts of water.
3. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 2, which is characterized in that according to parts by weight, described resistance to
It includes: solvent naphtha and Petropols by Ni/ γ-Al that stream particle is adjusted in warm salt resistance filling2O3The product 75 obtained after catalyst
Part, 35 parts of bentonite, 7 parts of calcium hydroxide, N, 0.3 part of N- methylene-bisacrylamide, 35 parts of acrylamide, potassium peroxydisulfate 0.3
Part, 7 parts of polyurethane and 40 parts of water.
4. stream particle is adjusted in temperature-resistant anti-salt according to claim 1-3 filling, which is characterized in that the polyurethane is
Thermoplastic polyurethane.
5. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 1, which is characterized in that the Petropols are C9 petroleum
Resin or C5 Petropols.
6. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 1, which is characterized in that stream particle is adjusted in temperature-resistant anti-salt filling
Diameter be 0.1-10mm.
7. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 6, which is characterized in that stream particle is adjusted in temperature-resistant anti-salt filling
Diameter be 0.5-6mm.
8. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 7, which is characterized in that stream particle is adjusted in temperature-resistant anti-salt filling
Diameter be 2-4mm.
9. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 1, which is characterized in that stream particle is adjusted in temperature-resistant anti-salt filling
Expansion multiple be 5-20 times.
10. stream particle is adjusted in temperature-resistant anti-salt filling according to claim 1, which is characterized in that stream is adjusted in temperature-resistant anti-salt filling
The real density of grain is 1.05-1.12g/cm3。
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| CN109280543B (en) * | 2018-10-31 | 2020-09-01 | 中国石油化工股份有限公司西北油田分公司 | Oil-soluble coated particle flow regulator and preparation method and application thereof |
| CN114437700B (en) * | 2020-10-20 | 2023-06-27 | 中国石油化工股份有限公司 | Temperature-resistant and salt-resistant flow regulator suitable for fracture-cavity oil reservoir, and preparation method and application thereof |
| CN113185959B (en) * | 2021-03-15 | 2022-11-25 | 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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