CN106800921A - Wide temperature high salinity adjusts stifled all-round frozen glue - Google Patents
Wide temperature high salinity adjusts stifled all-round frozen glue Download PDFInfo
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Abstract
Adjusted the invention provides wide temperature high salinity and blocked up with all-round frozen glue, belong to technical field of oilfield chemistry, its weight portion composition is as follows：0.3 part~1 part of 2 methyl propane sulfonic acid copolymer of acrylamide/2 acrylamido, 0.4 part~1.0 parts of low molecular polyethylene imines or/and polyethyleneimine polymer, amino nano silicon dioxide sol is 0.2 part~1 part with graphene oxide, 0.05 part~0.45 part of sodium sulfite or/and thiocarbamide, 0.05 part~0.5 part of hydroxyethylidene diphosphonic acid salt, balance of water, each component weight portion sum is 100.Wherein low molecular polyethylene imines relative molecular mass is 3,000 3800, and high molecular weight polyethyleneimine relative molecular mass is 18,000 25000.The gel-forming property of gel plugging agent provided by the present invention is excellent, and heat endurance is strong, and viscoplasticity is good, and gelation time is adjustable in 15 96h, can be used for the oilfield exploitation water plugging and profile controlling that temperature is 30 170 DEG C, salinity is 0 100000mg/L.
Description
Technical field
The present invention relates to oilfield exploitation blocking agent, specifically wide temperature high salinity adjusts stifled all-round frozen glue.
Background technology
Often there is well water during tertiary recovery is carried out in oil field.Well water can reduce original
Oil recovery, consumes stratum energy, and aggravates equipment corrosion and fouling, while after the increase of the crude oil water content for producing is caused
Continuous dehydrating plant load is aggravated, and row causes environmental pollution outside underproof crude oil, therefore how effective water blockoff is to improve oil recovering
The break-through point of rate.Conventional water shutoff agent has inorganic salts water shutoff agent, polymer gel class water shutoff agent, resinae water shutoff agent, foam
There is selective water plugging to act on for profile-controlling and plugging agent etc., wherein polymer gel class water shutoff agent, in can effectively reducing output crude oil
Moisture content.
Because the Regional Distribution of oil reservoir is wide, geological environment difference in place is larger, and the temperature difference of different oil reservoirs is larger：It is general
Between 50-70 DEG C, a small number of reservoir temperatures are relatively low, can as little as 30 DEG C, also have reservoir temperature higher, up to for the temperature of logical oil reservoir
More than 150 DEG C.Meanwhile, the salinity of different oil reservoirs is also different.When using polymer gel class water shutoff agent, polymerization is generally required
Thing frozen glue adapts to different temperature and salinity, but different temperature or different salinities are to polymer gel into colloidality
Can be notable with stability influence.For different temperatures or the reservoir media of different salinities, existing various frozen glue come out.
The patent of CN103409120A discloses Polymer nano intercalation composite blocking agent and preparation method thereof, and this is combined
Blocking agent is made up of polyacrylamide with organobentonite intercalation material and phenolic resin crosslinking agent or organic chrome cross linker compounding,
It is mainly used in the oilwell water shutoff profile control that temperature range is 50~140 DEG C, it can be used for the oil field that salinity is 0~40000mg/L
Water blockoff.Crosslinking agent phenolic resin and Organic Chromium less stable that the blocking agent is used, when particularly temperature is higher (>25 DEG C), easily
There is rotten layering, made troubles to transport and site operation；And the blocking agent is only applicable to the Water in Water Shutoff in Oil Field of Low-salinity.
The patent of CN103614123A discloses a kind of polyethyleneimine frozen glue profile-controlling and plugging agent, by anion pp acyl
Amine 0.3~0.8%, crosslinking agent polyethyleneimine 0.2~0.5%, additive sodium sulfite, sodium hydrogensulfite, sodium thiosulfate
Or one kind or its any several mixture 0.3~0.8% of thiocarbamide, balance of water, each component sum is 100%, can be blocked
At 110 DEG C, the stratum water of NaCl salinities 50000mg/L, its temperature tolerance is good, is not dehydrated within 120 days.Though the blocking agent can be used for mineralising
The stratum water of Du Genggao, but thermal adaptability is poor.
Outside divided by upper frozen glue, also many patents (CN103980872A, CN103614123A, CN102807849B etc.)
Different types of frozen glue is disclosed, but frozen glue profile-controlling and plugging agent disclosed in these patents can not simultaneously meet wide temperature, high mineralization
The need for the oilfield exploitation profile control and water plugging of degree.Therefore, a kind of new all-round gel plugging agent is developed to exploitation different temperatures or ore deposit
The oil reservoir of change degree has great importance.
The content of the invention
Adjusted it is an object of the invention to provide a kind of wide temperature high salinity and block up the all-round frozen glue of use, the frozen glue can meet temperature and be
30~170 DEG C, salinity be 0~10 × 104The need for the different oilfield exploitation water plugging and profile controllings of mg/L, frozen glue good stability,
Aging 6 months dehydration rates are respectively less than 10% within 170 DEG C.
To achieve the above object, the technical solution adopted by the present invention is：
Wide temperature high salinity adjusts stifled all-round frozen glue, the frozen glue by 0.3 part~1 part of polymer host, 0.4 part of crosslinking agent~
1.0 parts, 0.2 part~1 part of accelerator, increase steady 0.05 part~0.45 part of agent, 0.05 part~0.5 part of plastic conditioning agent, excess water group
Into consumption is weight portion, and the weight portion sum of said components is 100；The polymer host is acrylamide/2- acrylamides
Base -2- methyl propane sulfonic acid copolymers, the crosslinking agent is polyethyleneimine, and the accelerator is that amino nano silicon is molten
Glue：Graphene oxide presses amino nano silicon dioxide sol=1~3:1, it is described increase steady agent for one of thiocarbamide and sodium sulfite or
Combination, thiocarbamide during combination：Sodium sulfite=2~3:1；The plastic conditioning agent is hydroxyethylidene diphosphonic acid salt.
In the above-mentioned technical solutions, the frozen glue is by 0.3 part~0.7 part of polymer host, crosslinking agent 0.4 part~0.75
Part, 0.2 part~0.5 part of accelerator, steady 0.05 part~0.3 part of the agent of increasing, 0.05 part~0.3 part of plastic conditioning agent, excess water composition,
Consumption is weight portion, and the weight portion sum of said components is 100.
In the above-mentioned technical solutions, the frozen glue by 0.3 part~0.4 part of polymer host, 0.4 part~0.5 part of crosslinking agent,
0.2 part~0.3 part of accelerator, steady 0.05 part~0.1 part of the agent of increasing, 0.05 part~0.1 part of plastic conditioning agent, excess water composition, use
It is weight portion to measure, and the weight portion sum of said components is 100.
In the above-mentioned technical solutions, the frozen glue is by 0.3 part of polymer host, 0.5 part of crosslinking agent, 0.2 part of accelerator, increasing
Steady 0.05 part of agent, 0.05 part of plastic conditioning agent, excess water composition, consumption is weight portion, and the weight portion sum of said components is
100。
In the above-mentioned technical solutions, the frozen glue is by 0.5 part of polymer host, 0.6 part of crosslinking agent, 0.4 part of accelerator, increasing
Steady 0.2 part of agent, 0.15 part of plastic conditioning agent, excess water composition, consumption are weight portion, and the weight portion sum of said components is 100.
In the above-mentioned technical solutions, the frozen glue is by 0.3 part of polymer host, 0.5 part of crosslinking agent, 0.2 part of accelerator, increasing
Steady 0.05 part of agent, 0.05 part of plastic conditioning agent, excess water composition, consumption is weight portion, and the weight portion sum of said components is
100。
In the above-mentioned technical solutions, the frozen glue by 0.7 part of polymer host, 0.75 part of crosslinking agent, 0.5 part of accelerator,
Increase 0.3 part of steady agent, 0.3 part of plastic conditioning agent, excess water composition, consumption is weight portion, and the weight portion sum of said components is
100。
In the above-mentioned technical solutions, the frozen glue is by 1.0 parts of polymer host, 1.0 parts of crosslinking agent, 1.0 parts of accelerator, increasing
Steady 0.45 part of agent, 0.5 part of plastic conditioning agent, excess water composition, consumption are weight portion, and the weight portion sum of said components is 100.
In the above-mentioned technical solutions, relative point of the Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer
Protonatomic mass is 100 × 104~1000 × 104, ion degree is 5%~30%, and the excess water is salinity 0~10 × 104mg/L
Sodium-chloride water solution..
In the above-mentioned technical solutions, the crosslinking agent be low molecular weight polyethylene imines and high molecular weight polyethyleneimine it
One combines, low molecular weight polyethylene imines during combination：High molecular weight polyethyleneimine=1~2:1, wherein the low-molecular-weight
The relative molecular mass of polyethyleneimine is 3000-3800, and the relative molecular mass of the high molecular weight polyethyleneimine is
18000-25000。
Above-mentioned tune blocks up as follows with the preparation method of all-round frozen glue plugging agent：
1st, it is Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer is fully molten in the water of certain salinity
Solution, it is standby；By proportioning by crosslinking agent, accelerator, increase steady agent, plastic conditioning agent and excess water mixing and stirring；Will be above-mentioned
Two kinds of solution mixing and stirrings are to obtain plastic liquid.
2nd, will be placed in ampoule bottle into glue, with alcohol blast burner sinter seal, be placed in the baking oven of uniform temperature it is aging i.e.
Above-mentioned frozen glue is obtained, optional 30 DEG C~170 DEG C of gelling temperature, the different gelation time of different gelling temperature correspondences is final to cause
Gelation time is adjustable between 15~96h.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the water plugging and profile controlling of the oilfield exploitation that frozen glue of the invention can be used under 30~170 DEG C of different temperatures, it is in low temperature
Excellent gel-formation power is respectively provided with normal temperature high temperature oil field, and sealing characteristics is excellent；The present invention can be used for 0-10 × 104Mg/L's
The oil field of salinity, salt tolerance is preferable.
2nd, frozen glue of the invention possesses the network for intersecting IPN, and its intensity is high, good stability.
3rd, optional 30 DEG C~170 DEG C of the gelling temperature of frozen glue of the invention, the different plastic of different gelling temperature correspondences
Time, finally cause that gelation time is adjustable between 15~96h.
Specific embodiment
In order to be more clearly understood from the present invention, now specific embodiments of the present invention are explained in detail, but this
The protected scope of invention is not limited to following embodiments.
Wide temperature high salinity of the invention adjusts stifled all-round frozen glue, and the frozen glue is by 0.3 part~1 part of polymer host, crosslinking agent
0.4 part~1.0 parts, 0.2 part~1 part of accelerator, increase steady 0.05 part~0.45 part of agent, 0.05 part~0.5 part of plastic conditioning agent, remaining
Amount water composition, consumption is weight portion, and the weight portion sum of said components is 100；The polymer host is acrylamide/2- third
Acrylamide base -2- methyl propane sulfonic acid copolymers, the crosslinking agent is polyethyleneimine, and the accelerator is amino nanometer titanium dioxide
Ludox：Graphene oxide presses amino nano silicon dioxide sol=1~3:1, it is described increase steady agent for thiocarbamide and sodium sulfite it
One combines, thiocarbamide during combination：Sodium sulfite=2~3:1；The plastic conditioning agent is hydroxyethylidene diphosphonic acid salt.
In the above-mentioned technical solutions, the frozen glue is by 0.3 part~0.7 part of polymer host, crosslinking agent 0.4 part~0.75
Part, 0.2 part~0.5 part of accelerator, steady 0.05 part~0.3 part of the agent of increasing, 0.05 part~0.3 part of plastic conditioning agent, excess water composition,
Consumption is weight portion, and the weight portion sum of said components is 100.
In the above-mentioned technical solutions, the frozen glue by 0.3 part~0.4 part of polymer host, 0.4 part~0.5 part of crosslinking agent,
0.2 part~0.3 part of accelerator, steady 0.05 part~0.1 part of the agent of increasing, 0.05 part~0.1 part of plastic conditioning agent, excess water composition, use
It is weight portion to measure, and the weight portion sum of said components is 100.
In the above-mentioned technical solutions, the frozen glue is by 0.3 part of polymer host, 0.5 part of crosslinking agent, 0.2 part of accelerator, increasing
Steady 0.05 part of agent, 0.05 part of plastic conditioning agent, excess water composition, consumption is weight portion, and the weight portion sum of said components is
100。
In the above-mentioned technical solutions, the frozen glue is by 0.5 part of polymer host, 0.6 part of crosslinking agent, 0.4 part of accelerator, increasing
Steady 0.2 part of agent, 0.15 part of plastic conditioning agent, excess water composition, consumption are weight portion, and the weight portion sum of said components is 100.
In the above-mentioned technical solutions, the frozen glue is by 0.3 part of polymer host, 0.5 part of crosslinking agent, 0.2 part of accelerator, increasing
Steady 0.05 part of agent, 0.05 part of plastic conditioning agent, excess water composition, consumption is weight portion, and the weight portion sum of said components is
100。
In the above-mentioned technical solutions, the frozen glue by 0.7 part of polymer host, 0.75 part of crosslinking agent, 0.5 part of accelerator,
Increase 0.3 part of steady agent, 0.3 part of plastic conditioning agent, excess water composition, consumption is weight portion, and the weight portion sum of said components is
100。
In the above-mentioned technical solutions, the frozen glue is by 1.0 parts of polymer host, 1.0 parts of crosslinking agent, 1.0 parts of accelerator, increasing
Steady 0.45 part of agent, 0.5 part of plastic conditioning agent, excess water composition, consumption are weight portion, and the weight portion sum of said components is 100.
In the above-mentioned technical solutions, relative point of the Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer
Protonatomic mass is 100 × 104~1000 × 104, ion degree is 5%~30%, and the excess water is salinity 0~10 × 104mg/L
Sodium-chloride water solution..
In the above-mentioned technical solutions, the crosslinking agent be low molecular weight polyethylene imines and high molecular weight polyethyleneimine it
One combines, low molecular weight polyethylene imines during combination：High molecular weight polyethyleneimine=1~2:1, wherein the low-molecular-weight
The relative molecular mass of polyethyleneimine is 3000-3800, and the relative molecular mass of the high molecular weight polyethyleneimine is
18000-25000。
The action principle of key component and addition reason are as follows in the technical proposal for solving the technical problem of the invention
It is described：
1st, use crosslinking agent polyethyleneimine in nucleophile nitrogen-atoms crosslinking active it is high, at low temperature can and propylene
Acid amides/2- acrylamide-2-methylpro panesulfonic acids copolymer reaction generation covalent bond, thus polyethyleneimine and acrylamide/
2- acrylamide-2-methylpro panesulfonic acids copolymer also has excellent gel-forming property at low temperature；Meanwhile, the amino two of use
Silica sol and stannic oxide/graphene nano particle surface carry substantial amounts of hydroxyl, with excellent hydrophilic ability, help to increase
The hydrophilicity of strong cross-linking system, and then promote the formation of frozen glue under cryogenic conditions.Thus to can be used for temperature relatively low for the frozen glue
Oilfield exploitation is adjusted stifled.
The nano-particle of use passes through hydrogen bond, electrostatic attraction etc. between effect and polymer by forming associative structure, presses down
Water in frozen glue processed is deviate from from frozen glue, therefore frozen glue heat resistance strengthens, excellent heat stability, can be used for general temperature or more
The water blockoff of the oil extraction process of high-temperature.Comprehensive described, all-round gel plugging agent provided by the present invention can be in low temperature normal temperature
High temperature oil field shows excellent sealing characteristics.
The Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer of use contains anionic group sulfonic group, by
It is larger in sulfonic group volume, larger space steric effect can be produced, additionally, sulfonic hydration capability is stronger so that polymerization
Thing molecule forms thicker hydrated sheath, and so as to reduce influence of the effects of ion to polymer, therefore frozen glue salt resistance ability is aobvious
Write enhancing.
2nd, the crosslinking agent polyethyleneimine green non-pollution for using, is conducive to protecting oil field and ground environment.Meanwhile, poly- second
Alkene imines is liquid, and dissolubility is excellent, is conducive into the preparation of glue.The polyethyleneimine compounding use of high/low molecular weight makes
Obtain it and the network for intersecting IPN, thus frozen glue are formed with Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer
Intensity is high, viscoplasticity is good, stability is strong.
3rd, the present invention controls frozen glue plastic speed by adding the amount of plastic conditioning agent hydroxyethylidene diphosphonic acid salt so that gelation time
It is adjustable between 15~96h, therefore the frozen glue can not only be used for the sealing agent of near wellbore zone, the deep that remote well area is can be used for again is adjusted
Cut open.
Embodiment 1：
0.5 part of high molecular weight polyethyleneimine, 0.15 part of ammonia are added in 49.2 parts of 100000mg/L sodium chloride solutions
Base nano silicon dioxide sol, 0.05 portion of graphene oxide, 0.05 portion of thiocarbamide, 0.05 portion of hydroxyethylidene diphosphonic acid salt, stir, and make it
Fully dissolving, then by 50 parts with 100000mg/L sodium chloride solutions prepare mass concentration be 0.6% acrylamide/2- propylene
Amide groups -2- methyl propane sulfonic acids copolymer mixes with above-mentioned solution, stirs, that is, obtain of the invention into glue.The plastic
Liquid gelation time at 30 DEG C is 96h, and it is 0.066MPa to use breakthrough vacuum method to measure gel strength, aging 6 at 30 DEG C
The moon is without dehydrating phenomena.Wherein, gel strength is more outstanding more than 0.06MPa.
Embodiment 2：
0.4 part of high molecular weight polyethyleneimine, 0.2 part of nanometer are added in 49.1 parts of 50000mg/L sodium chloride solutions
Silicon dioxide gel, 0.1 portion of graphene oxide, 0.1 portion of thiocarbamide, 0.1 portion of hydroxyethylidene diphosphonic acid salt, stir, and it is fully dissolved,
Again by 50 parts with 50000mg/L sodium chloride solutions prepare mass concentration be 0.8% acrylamide/2- acrylamidos -2-
Methyl propane sulfonic acid copolymer mixes with above-mentioned solution, stirs, that is, obtain of the invention into glue.This is into glue at 60 DEG C
Gelation time is 48h, and the gel strength of acquisition is 0.072MPa, aging 6 months no dehydrating phenomenas at 60 DEG C.
Embodiment 3：
0.6 part of high molecular weight polyethyleneimine, 0.3 part of nanometer are added in 48.65 parts of 40000mg/L sodium chloride solutions
Silicon dioxide gel, 0.1 portion of graphene oxide, 0.2 portion of thiocarbamide, 0.15 portion of hydroxyethylidene diphosphonic acid salt, stir, and make it fully molten
Solution, then by 50 parts with 40000mg/L sodium chloride solutions prepare mass concentration be 1% acrylamide/2- acrylamidos -2-
Methyl propane sulfonic acid copolymer mixes with above-mentioned solution, stirs, that is, obtain of the invention into glue.This is into glue at 90 DEG C
Gelation time is 36h, and the gel strength of acquisition is 0.069MPa, and aging 6 months dehydration rates are 1.2% at 90 DEG C.
Embodiment 4：
Added in 48.15 parts of 20000mg/L sodium chloride solutions 0.5 part of high molecular weight polyethyleneimine, 0.25 part low
Molecular weight polyethyleneimine, 0.3 part of nano silicon dioxide sol, 0.2 part of graphene oxide, 0.3 part of sodium sulfite, 0.3 part of hydroxyl
Base phosphonate, stirs, and it is fully dissolved, then is by the mass concentration that 50 parts are prepared with 20000mg/L sodium chloride solutions
1.4% Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer mixes with above-mentioned solution, stirs, that is, obtain
It is of the invention into glue.Into glue, the gelation time at 130 DEG C is 32h for this, and the gel strength of acquisition is 0.071MPa, 130 DEG C
Under aging 6 months dehydration rates be 3.4%.
Embodiment 5：
Added in 47.6 parts of 10000mg/L sodium chloride solutions 0.4 part of high molecular weight polyethyleneimine, 0.4 part low point
Sub- weight northylen imines, 0.4 part of nano silicon dioxide sol, 0.4 part of graphene oxide, 0.1 part of sodium sulfite, 0.3 part of thiocarbamide,
0.4 portion of hydroxyethylidene diphosphonic acid salt, stirs, and it is fully dissolved, then the quality that 50 parts are prepared with 10000mg/L sodium chloride solutions
Concentration is that 1.8% Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer mixes with above-mentioned solution, is stirred,
Obtain of the invention into glue.Into glue, the gelation time at 150 DEG C is 20h for this, and the gel strength of acquisition is 0.065MPa,
Aging 6 months dehydration rates are 6.2% at 150 DEG C.
Embodiment 6：
Added in 47.05 parts of 10000mg/L sodium chloride solutions 0.5 part of high molecular weight polyethyleneimine, 0.5 part low point
Sub- weight northylen imines, 0.5 part of nano silicon dioxide sol, 0.5 part of graphene oxide, 0.15 part of sodium sulfite, 0.3 part of sulphur
Urea, 0.5 portion of hydroxyethylidene diphosphonic acid salt, stir, and it is fully dissolved, then by 50 parts with 10000mg/L sodium chloride solutions prepare
Mass concentration is that 2% Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer mixes with above-mentioned solution, and stirring is equal
It is even, that is, obtain of the invention into glue.Into glue, the gelation time at 170 DEG C is 15h for this, and the gel strength of acquisition is
0.061MPa, aging 6 months dehydration rates are 9.7% at 170 DEG C.
The wide temperature high salinity of 1~embodiment of above-described embodiment 6 adjust it is stifled with all can frozen glue each component proportion collect such as the institute of table 1
Show.
Embodiment 7：
Be research object with the frozen glue obtained in " embodiment 1-6 ", investigation frozen glue provided by the present invention closure energy
Power and flushing resistance.Specific experiment process is as follows：Internal diameter is 2.5cm, 6 fill out sand tube that length is 20cm distinguish filled stone
The prepared simulation core of sand grain, is denoted as 1#~6#, and original permeability k is obtained after water drive to pressure stability1, then respectively will be " real
Apply a 1-6 " in into glue inverse injection fill out sand tube, injected slurry volume is 0.5PV (rock pore volume), is then injected into
0.3PV water is replaced, and after frozen glue plastic, water drive measures the stifled rear permeability k of simulation core to pressure stability respectively2, and press
Formula E=(k1-k2)/k1× 100%, calculate reservoir core plugging rate E1；Continue to inject 15PV water, by washing away rear permeability k3Calculate
Sealing ratiod E2The flushing resistance of frozen glue is investigated, experimental result is as shown in table 2.
Table 1
As shown in Table 1, the frozen glue in embodiment is by Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer 0.3
Part~1 part；0.4 part~1.0 parts of high molecular weight polyethyleneimine or/and low molecular weight polyethylene imines, low-molecular-weight during combination
Polyethyleneimine：High molecular weight polyethyleneimine=1~2:1；0.2 part of amino nano silicon dioxide sol and graphene oxide~
1 part, and amino nano silicon dioxide sol：Graphene oxide presses amino nano silicon dioxide sol=1~3:1；Thiocarbamide or/
With 0.05 part~0.45 part of sodium sulfite, thiocarbamide during combination：Sodium sulfite=2~3:1；0.05 part~0.5 part of hydroxyethylidene diphosphonic acid salt,
It is made up of the excess water of certain salinity, consumption is weight portion, and the weight portion sum of all components is 100.
Meanwhile, the gelling temperature of frozen glue is adjustable at 30 DEG C~170 DEG C, and corresponding gelation time is adjustable between 15~96h,
Can be used for Water in Water Shutoff in Oil Field profile control when oil field temperature is 30 DEG C~170 DEG C.Each frozen glue increases to 170 DEG C of oil in temperature by 30 DEG C
Aging 6 months of Tanaka, dehydration rate gradually increases, but respectively less than 10%, in tolerance interval.In view of the stability of frozen glue,
Aging temperature can not continue to improve.
Table 2
As shown in Table 2, in the environment of frozen glue of the present invention is 30 DEG C~170 DEG C in temperature, reservoir core plugging rate E1It is all higher than
90%, show that frozen glue of the present invention has stronger shut-off capacity in the reservoir media of different temperatures；Sealing ratiod E2Then in temperature
Gradually step-down when increasing, but be above 85%, illustrates that frozen glue of the present invention has in the reservoir media of different temperatures stronger resistance to
Scouring capability so that the closure term of validity is ensured.
Above test result indicate that：The gel plugging agent that the present invention is provided is in salinity in 30 DEG C of low temperature to 170 DEG C of high temperature
0~10 × 104There is excellent profile control and water plugging performance in the oilfield exploitation of mg/L, appearance during water drive crude oil can be effectively blocked
High permeability formation, meanwhile, the gelling temperature of the gel plugging agent is adjustable at 30 DEG C~170 DEG C, the corresponding plastic of different gelling temperatures
Time is adjustable between 15~96h.
Other are unspecified to belong to prior art.
Claims (10)
1. wide temperature high salinity adjusts stifled all-round frozen glue, it is characterised in that：The frozen glue is by 0.3 part~1 part of polymer host, friendship
0.4 part~1.0 parts of agent of connection, 0.2 part~1 part of accelerator, steady 0.05 part~0.45 part of the agent of increasing, plastic conditioning agent 0.05 part~0.5
Part, excess water composition, consumption are weight portion, and the weight portion sum of said components is 100；The polymer host is acryloyl
Amine/2- acrylamide-2-methylpro panesulfonic acid copolymers, the crosslinking agent is polyethyleneimine, and the accelerator is received for amino
Rice silicon dioxide gel：Graphene oxide presses amino nano silicon dioxide sol=1~3:1, the steady agent of increasing is thiocarbamide and Asia
One of sodium sulphate or combination, thiocarbamide during combination：Sodium sulfite=2~3:1；The plastic conditioning agent is hydroxyethylidene diphosphonic acid salt.
2. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The frozen glue is by being polymerized
0.3 part~0.7 part of owner's agent, 0.4 part~0.75 part of crosslinking agent, 0.2 part~0.5 part of accelerator, the steady agent 0.05 part~0.3 of increasing
Part, 0.05 part~0.3 part of plastic conditioning agent, excess water composition, consumption are weight portion, and the weight portion sum of said components is 100.
3. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The frozen glue is by being polymerized
0.3 part~0.4 part of owner's agent, 0.4 part~0.5 part of crosslinking agent, 0.2 part~0.3 part of accelerator, increase steady 0.05 part~0.1 part of agent,
0.05 part~0.1 part of plastic conditioning agent, excess water composition, consumption are weight portion, and the weight portion sum of said components is 100.
4. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The frozen glue is by being polymerized
0.3 part of owner's agent, 0.5 part of crosslinking agent, 0.2 part of accelerator, steady 0.05 part of the agent of increasing, 0.05 part of plastic conditioning agent, excess water composition,
Consumption is weight portion, and the weight portion sum of said components is 100.
5. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The frozen glue is by being polymerized
0.5 part of owner's agent, 0.6 part of crosslinking agent, 0.4 part of accelerator, steady 0.2 part of the agent of increasing, 0.15 part of plastic conditioning agent, excess water composition,
Consumption is weight portion, and the weight portion sum of said components is 100.
6. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The frozen glue is by being polymerized
0.3 part of owner's agent, 0.5 part of crosslinking agent, 0.2 part of accelerator, steady 0.05 part of the agent of increasing, 0.05 part of plastic conditioning agent, excess water composition,
Consumption is weight portion, and the weight portion sum of said components is 100.
7. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The frozen glue is by being polymerized
0.7 part of owner's agent, 0.75 part of crosslinking agent, 0.5 part of accelerator, steady 0.3 part of the agent of increasing, 0.3 part of plastic conditioning agent, excess water composition,
Consumption is weight portion, and the weight portion sum of said components is 100.
8. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The frozen glue is by being polymerized
1.0 parts of owner's agent, 1.0 parts of crosslinking agent, 1.0 parts of accelerator, steady 0.45 part of the agent of increasing, 0.5 part of plastic conditioning agent, excess water composition,
Consumption is weight portion, and the weight portion sum of said components is 100.
9. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The acrylamide/
The relative molecular mass of 2- acrylamide-2-methylpro panesulfonic acid copolymers is 100 × 104~1000 × 104, ion degree is 5%
~30%；The water or excess water are salinity 0~10 × 104The sodium-chloride water solution of mg/L.
10. wide temperature high salinity according to claim 1 adjusts stifled all-round frozen glue, it is characterised in that：The crosslinking agent is
One of low molecular weight polyethylene imines and high molecular weight polyethyleneimine are combined, low molecular weight polyethylene imines during combination：It is high
Molecular weight polyethyleneimine=1~2:1, wherein the relative molecular mass of the low molecular weight polyethylene imines is 3000-3800,
The relative molecular mass of the high molecular weight polyethyleneimine is 18000-25000.
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