CN106800921B - The stifled frozen glue of wide temperature high salinity tune - Google Patents
The stifled frozen glue of wide temperature high salinity tune Download PDFInfo
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- CN106800921B CN106800921B CN201611094011.6A CN201611094011A CN106800921B CN 106800921 B CN106800921 B CN 106800921B CN 201611094011 A CN201611094011 A CN 201611094011A CN 106800921 B CN106800921 B CN 106800921B
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—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
- C09K8/512—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
Abstract
The present invention provides the wide stifled frozen glue of temperature high salinity tune, belong to technical field of oilfield chemistry, its parts by weight composition is as follows: 0.3 part~1 part of Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer, low molecular polyethylene imines or/and 0.4 part~1.0 parts of polyethyleneimine polymer, amino nano silicon dioxide sol and graphene oxide are 0.2 part~1 part, sodium sulfite or/and 0.05 part~0.45 part of thiocarbamide, 0.05 part~0.5 part of hydroxyethylidene diphosphonic acid salt, surplus is water, and the sum of each component parts by weight are 100.Wherein low molecular polyethylene imines relative molecular mass is 3000-3800, and high molecular weight polyethyleneimine relative molecular mass is 18000-25000.The gel-forming property of gel plugging agent provided by the present invention is excellent, and thermal stability 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 agents, specifically the stifled frozen glue of wide warm high salinity tune.
Background technique
Often there is well water during carrying out tertiary recovery in oil field.Well water can reduce original
Oil recovery, consume stratum energy, and aggravate equipment corrosion and fouling, while the crude oil water content produced increase so that after
Continuous dehydrating plant load aggravates, and underproof crude oil outlet causes environmental pollution, therefore how effective water blockoff is to improve oil recovering
The break-through point of rate.Common water shutoff agent has inorganic salts water shutoff agent, polymer gel class water shutoff agent, resinae water shutoff agent, foam
Profile-controlling and plugging agent etc., wherein polymer gel class water shutoff agent has selective water plugging effect, can effectively reduce in output crude oil
Moisture content.
Since 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: general
For the temperature of logical oil reservoir between 50-70 DEG C, a small number of reservoir temperatures are lower, can also have reservoir temperature higher, up to down to 30 DEG C
150 DEG C or more.Meanwhile the salinity of different oil reservoirs is also different.When using polymer gel class water shutoff agent, generally require to polymerize
Object frozen glue adapts to different temperature and salinity, but different temperature or different salinities to polymer gel at colloidality
It can be significant with stability influence.For the reservoir media of different temperatures or different salinities, there are many frozen glue to come out.
The patent of CN103409120A discloses Polymer nano intercalation composite blocking agent and preparation method thereof, this is compound
Blocking agent is compounded with organobentonite intercalation material and phenolic resin crosslinking agent or organic chrome cross linker by polyacrylamide and is formed,
It is mainly used for the oilwell water shutoff profile control that temperature range is 50~140 DEG C, can be used for the oil field that salinity is 0~40000mg/L
Water blockoff.The crosslinking agent phenolic resin and Organic Chromium stability that the blocking agent uses are poor, when especially temperature is higher (> 25 DEG C), easily
Rotten layering occurs, makes 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, surplus is water, and the sum of each component is 100%, can be blocked
At 110 DEG C, the water flooding of NaCl salinity 50000mg/L, temperature tolerance is good, is not dehydrated within 120 days.Though the blocking agent can be used for mine
The higher water flooding of change degree, but thermal adaptability is poor.
Except upper frozen glue, there are many more patent (CN103980872A, CN103614123A, CN102807849B
Deng) different types of frozen glue is disclosed, but the frozen glue profile-controlling and plugging agent of these patent disclosures cannot meet wide temperature, high mine simultaneously
The needs of the oilfield exploitation profile control and water plugging of change degree.Therefore, the novel gel plugging agent of one kind is developed to exploitation different temperatures or mineralising
The oil reservoir of degree has great importance.
Summary of the invention
It is an object of the invention to provide a kind of wide stifled frozen glue of temperature high salinity tune, it is 30 which, which can meet temperature,
~170 DEG C, salinity be 0~10 × 104The needs of the different oilfield exploitation water plugging and profile controllings of mg/L, frozen glue stability is good, 170
6 months dehydration rates of aging are respectively less than 10% within DEG C.
To achieve the above object, the technical solution adopted by the present invention is that:
The stifled frozen glue of wide temperature high salinity tune, the frozen glue is by 0.3 part~1 part of polymer host agent, crosslinking agent 0.4 part~1.0
Part, 0.2 part~1 part of promotor increase steady 0.05 part~0.45 part of agent, 0.05 part~0.5 part of plastic regulator, excess water composition,
Dosage is parts by weight, and the sum of parts by weight of said components are 100；The polymer host agent is acrylamide/2- acrylamido-
2- methyl propane sulfonic acid copolymer, the crosslinking agent are polyethyleneimine, and the promotor is amino nano silicon dioxide sol: oxygen
Graphite alkene=1~3:1, described to increase steady agent and be one of thiocarbamide and sodium sulfite or combine, thiocarbamide when combination: sodium sulfite=2
~3:1；The plastic regulator 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 agent, crosslinking agent 0.4 part~0.75
Part, 0.2 part~0.5 part of promotor increase steady 0.05 part~0.3 part of agent, 0.05 part~0.3 part of plastic regulator, excess water composition,
Dosage is parts by weight, and the sum of parts by weight of said components are 100.
In the above-mentioned technical solutions, the frozen glue is by 0.3 part~0.4 part of polymer host agent, crosslinking agent 0.4 part~0.5
Part, 0.2 part~0.3 part of promotor increase steady 0.05 part~0.1 part of agent, 0.05 part~0.1 part of plastic regulator, excess water composition,
Dosage is parts by weight, and the sum of parts by weight of said components are 100.
In the above-mentioned technical solutions, the frozen glue by 0.3 part of polymer host agent, 0.5 part of crosslinking agent, 0.2 part of promotor,
Increase 0.05 part of steady agent, 0.05 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, the frozen glue by 0.5 part of polymer host agent, 0.6 part of crosslinking agent, 0.4 part of promotor,
Increase 0.2 part of steady agent, 0.15 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, the frozen glue by 0.3 part of polymer host agent, 0.5 part of crosslinking agent, 0.2 part of promotor,
Increase 0.05 part of steady agent, 0.05 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, the frozen glue by 0.7 part of polymer host agent, 0.75 part of crosslinking agent, 0.5 part of promotor,
Increase 0.3 part of steady agent, 0.3 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, the frozen glue by 1.0 parts of polymer host agent, 1.0 parts of crosslinking agent, 1.0 parts of promotor,
Increase 0.45 part of steady agent, 0.5 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, opposite 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 or combination, low molecular weight polyethylene imines when 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 it is stifled with frozen glue plugging agent the preparation method is as follows:
1, Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer is sufficiently molten in the water of certain salinity
Solution, it is spare；Crosslinking agent, promotor, the steady agent of increasing, plastic regulator and excess water are mixed evenly according to the ratio；It will be above-mentioned
Two kinds of solution, which are mixed evenly, obtains plastic liquid.
2, it will be placed in ampoule bottle at glue, and be sintered and sealed with alcohol blast burner, and be placed in the baking oven of certain temperature aging i.e.
Above-mentioned frozen glue is obtained, optional 30 DEG C~170 DEG C of gelling temperature, different gelling temperatures corresponds to different gelation times, finally makes
Gelation time is adjustable between 15~96h.
Compared with prior art, the beneficial effects of the present invention are:
1, the water plugging and profile controlling for the oilfield exploitation that frozen glue of the invention can be used under 30~170 DEG C of different temperatures, in low temperature
Excellent gel-formation power is all had in room 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 are preferable.
2, frozen glue of the invention possesses the network for intersecting interpenetrating, and intensity is high, stability is good.
3, optional 30 DEG C~170 DEG C of the gelling temperature of frozen glue of the invention, different gelling temperatures corresponds to different plastics
Time finally makes gelation time adjustable between 15~96h.
Specific embodiment
In order to which the present invention is more clearly understood, now specific embodiments of the present invention are explained in detail, but originally
It invents protected range and is not limited to following embodiments.
The wide warm stifled frozen glue of high salinity tune of the present invention, the frozen glue is by 0.3 part~1 part of polymer host agent, crosslinking agent 0.4
Part~1.0 parts, 0.2 part~1 part of promotor, steady 0.05 part~0.45 part of the agent of increasing, 0.05 part of plastic regulator~0.5 part, surplus
Water composition, dosage are parts by weight, and the sum of parts by weight of said components are 100；The polymer host agent is acrylamide/2- propylene
Amide groups -2- methyl propane sulfonic acid copolymer, the crosslinking agent are polyethyleneimine, and the promotor is amino nano silica
Colloidal sol: graphene oxide=1~3:1, described to increase steady agent and be one of thiocarbamide and sodium sulfite or combine, thiocarbamide when combination: sulfurous
Sour sodium=2~3:1；The plastic regulator 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 agent, crosslinking agent 0.4 part~0.75
Part, 0.2 part~0.5 part of promotor increase steady 0.05 part~0.3 part of agent, 0.05 part~0.3 part of plastic regulator, excess water composition,
Dosage is parts by weight, and the sum of parts by weight of said components are 100.
In the above-mentioned technical solutions, the frozen glue is by 0.3 part~0.4 part of polymer host agent, crosslinking agent 0.4 part~0.5
Part, 0.2 part~0.3 part of promotor increase steady 0.05 part~0.1 part of agent, 0.05 part~0.1 part of plastic regulator, excess water composition,
Dosage is parts by weight, and the sum of parts by weight of said components are 100.
In the above-mentioned technical solutions, the frozen glue by 0.3 part of polymer host agent, 0.5 part of crosslinking agent, 0.2 part of promotor,
Increase 0.05 part of steady agent, 0.05 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, the frozen glue by 0.5 part of polymer host agent, 0.6 part of crosslinking agent, 0.4 part of promotor,
Increase 0.2 part of steady agent, 0.15 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, the frozen glue by 0.3 part of polymer host agent, 0.5 part of crosslinking agent, 0.2 part of promotor,
Increase 0.05 part of steady agent, 0.05 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, the frozen glue by 0.7 part of polymer host agent, 0.75 part of crosslinking agent, 0.5 part of promotor,
Increase 0.3 part of steady agent, 0.3 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, the frozen glue by 1.0 parts of polymer host agent, 1.0 parts of crosslinking agent, 1.0 parts of promotor,
Increase 0.45 part of steady agent, 0.5 part of plastic regulator, excess water composition, dosage is parts by weight, and the sum of parts by weight of said components are
100。
In the above-mentioned technical solutions, opposite 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/
The sodium-chloride water solution of L.
In the above-mentioned technical solutions, the crosslinking agent be low molecular weight polyethylene imines and high molecular weight polyethyleneimine it
One or combination, low molecular weight polyethylene imines when 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:
1, the nucleophile nitrogen-atoms crosslinking active in the crosslinking agent polyethyleneimine used is high, at low temperature can be with propylene
Amide/2- acrylamide-2-methylpro panesulfonic acid copolymer reaction generates covalent bond, thus polyethyleneimine and acrylamide/
2- acrylamide-2-methylpro panesulfonic acid 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 have a large amount of hydroxyl, have 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 it is lower to can be used for temperature for the frozen glue
Oilfield exploitation tune is stifled.
The nanoparticle of use passes through between the effects of hydrogen bond, electrostatic attraction and polymer by forming associative structure, presses down
Water in frozen glue processed is deviate from from frozen glue, therefore frozen glue heat resistance enhances, and excellent heat stability can be used for general temperature or more
The water blockoff of the oil extraction process of high-temperature.Described in synthesis, gel plugging agent provided by the present invention can be in low temperature room 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, biggish space steric effect can be generated, in addition, sulfonic hydration capability is stronger, so that polymerization
Object molecule forms thicker hydrated sheath, to reduce influence of the effects of ion to polymer, therefore frozen glue salt resistance ability is aobvious
Write enhancing.
2, the crosslinking agent polyethyleneimine green non-pollution used is conducive to protect 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 of high/low molecular weight, which is used in compounding, to be made
It obtains it and forms the network for intersecting interpenetrating, thus frozen glue with Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer
Intensity is high, viscoplasticity is good, stability is strong.
3, the present invention controls frozen glue plastic speed by the amount of addition plastic regulator 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, and can be used for the deep tune in remote well area
It cuts 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 solution
Base nano silicon dioxide sol, 0.05 part of graphene oxide, 0.05 part of thiocarbamide, 0.05 portion of hydroxyethylidene diphosphonic acid salt, stir evenly, make it
Sufficiently dissolution, then the acrylamide/2- propylene for being 0.6% by 50 parts of mass concentrations with the preparation of 100000mg/L sodium chloride solution
Amide groups -2- methyl propane sulfonic acid copolymer is mixed with above-mentioned solution, is stirred evenly of the invention at glue to get arriving.The plastic
Liquid gelation time at 30 DEG C is 96h, uses and breaks through vacuum degree method and measure gel strength as 0.066MPa, aging 6 at 30 DEG C
The moon does not have dehydrating phenomena.Wherein, gel strength is more than 0.06MPa more outstanding.
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 solution
Silicon dioxide gel, 0.1 part of graphene oxide, 0.1 part of thiocarbamide, 0.1 portion of hydroxyethylidene diphosphonic acid salt, stir evenly, dissolve it sufficiently,
Acrylamide/2- acrylamido-the 2- for being again 0.8% by 50 parts of mass concentrations with the preparation of 50000mg/L sodium chloride solution
Methyl propane sulfonic acid copolymer is mixed with above-mentioned solution, is stirred evenly of the invention at glue to get arriving.This is at glue at 60 DEG C
Gelation time is 48h, and the gel strength of acquisition is 0.072MPa, does not have dehydrating phenomena within aging 6 months at 60 DEG C.
Embodiment 3:
In 48.65 parts of 40000mg/L sodium chloride solution be added 0.6 part of high molecular weight polyethyleneimine, 0.3 part receive
Rice silicon dioxide gel, 0.1 part of graphene oxide, 0.2 part of thiocarbamide, 0.15 portion of hydroxyethylidene diphosphonic acid salt, stir evenly, and keep it sufficiently molten
Solution, then the acrylamide/2- acrylamido -2- for being 1% by 50 parts of mass concentrations with the preparation of 40000mg/L sodium chloride solution
Methyl propane sulfonic acid copolymer is mixed with above-mentioned solution, is stirred evenly of the invention at glue to get arriving.This is at glue at 90 DEG C
Gelation time is 36h, and the gel strength of acquisition is 0.069MPa, and 6 months dehydration rates of aging are 1.2% at 90 DEG C.
Embodiment 4:
In 48.15 parts of 20000mg/L sodium chloride solution be added 0.5 part of high molecular weight polyethyleneimine, 0.25 part it is 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 evenly, and dissolves it sufficiently, then is with the mass concentration that 20000mg/L sodium chloride solution is prepared by 50 parts
1.4% Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer is mixed with above-mentioned solution, is stirred evenly to get arriving
It is of the invention at glue.At glue, the gelation time at 130 DEG C is 32h for this, and the gel strength of acquisition is 0.071MPa, 130 DEG C
6 months dehydration rates of lower aging are 3.4%.
Embodiment 5:
0.4 part of high molecular weight polyethyleneimine, 0.4 part low point are added in 47.6 parts of 10000mg/L sodium chloride solution
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 evenly, dissolves it sufficiently, then the matter that 50 parts are prepared with 10000mg/L sodium chloride solution
The Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer that amount concentration is 1.8% is mixed with above-mentioned solution, and stirring is equal
It is even of the invention at glue to get arriving.At glue, the gelation time at 150 DEG C is 20h for this, and the gel strength of acquisition is
0.065MPa, 6 months dehydration rates of aging are 6.2% at 150 DEG C.
Embodiment 6:
In 47.05 parts of 10000mg/L sodium chloride solution be added 0.5 part of high molecular weight polyethyleneimine, 0.5 part it is low
Molecular weight polyethyleneimine, 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 evenly, dissolve it sufficiently, then 50 parts are prepared with 10000mg/L sodium chloride solution
The Acrylamide/2-acrylamido-2-methyl-propanesulfonic Acid Copolymer that mass concentration is 2% is mixed with above-mentioned solution, and stirring is equal
It is even of the invention at glue to get arriving.At glue, the gelation time at 170 DEG C is 15h for this, and the gel strength of acquisition is
0.061MPa, 6 months dehydration rates of aging are 9.7% at 170 DEG C.
The wide warm each component proportion of the stifled frozen glue of high salinity tune of 1~embodiment of above-described embodiment 6 summarizes as shown in table 1.
Embodiment 7:
Using the frozen glue obtained in " embodiment 1-6 " as research object, investigate frozen glue provided by the present invention closure energy
Power and flushing resistance.Specific experiment process is as follows: 6 fill out sand tube that by internal diameter be 2.5cm, length is 20cm distinguish filled stone
Simulation core is made in sand grain, is denoted as 1#~6#, and water drive to pressure obtains original permeability k after stablizing1, then respectively will be " real
Apply in a 1-6 " in 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 to pressure is stablized respectively, measures the stifled rear permeability k of simulation core2, and press
Formula E=(k1-k2)/k1× 100%, calculate reservoir core plugging rate E1；Continue to inject 15PV water, by washing away rear permeability k3It calculates
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；High molecular weight polyethyleneimine or/and 0.4 part~1.0 parts of low molecular weight polyethylene imines, low molecule when combination
Weight northylen imines: high molecular weight polyethyleneimine=1~2:1；Amino nano silicon dioxide sol and 0.2 part of graphene oxide
~1 part, and amino nano silicon dioxide sol: graphene oxide=1~3:1；0.05 part of thiocarbamide or/and sodium sulfite~
0.45 part, thiocarbamide when combination: sodium sulfite=2~3:1；0.05 part~0.5 part of hydroxyethylidene diphosphonic acid salt has the remaining of certain salinity
Water composition is measured, dosage is parts by weight, and the sum of parts by weight of all components are 100.
Meanwhile the gelling temperature of frozen glue is adjustable at 30 DEG C~170 DEG C, corresponding gelation time is adjustable between 15~96h,
The Water in Water Shutoff in Oil Field profile control that can be used for 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
Tanaka's aging 6 months, dehydration rate gradually increases, but respectively less than 10%, within an acceptable range.In view of the stability of frozen glue,
Aging temperature can not continue to improve.
Table 2
As shown in Table 2, frozen glue of the present invention is in the environment of temperature is 30 DEG C~170 DEG C, reservoir core plugging rate E1It is all larger 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
It is gradually lower when increasing, but is above 85%, it is stronger resistance to illustrate that frozen glue of the present invention has in the reservoir media of different temperatures
Scouring capability is guaranteed so that blocking validity period.
Above the results showed that gel plugging agent provided by the invention is in salinity at 30 DEG C to 170 DEG C of high temperature of low 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.
It is other unspecified to belong to the prior art.
Claims (9)
1. the stifled frozen glue of wide temperature high salinity tune, it is characterised in that: the frozen glue is by 0.3 part of polymer host agent~1 part, crosslinking agent
0.4 part~1.0 parts, 0.2 part~1 part of promotor, increase steady 0.05 part~0.45 part of agent, be 0.05 part~0.5 part of plastic regulator, remaining
Water composition is measured, dosage is parts by weight, and the sum of parts by weight of said components are 100；The polymer host agent is acrylamide/2- third
Acrylamide base -2- methyl propane sulfonic acid copolymer, the crosslinking agent are polyethyleneimine, and the promotor is amino nanometer titanium dioxide
Silica solution: graphene oxide=1~3: 1, described to increase steady agent and be one of thiocarbamide and sodium sulfite or combine, thiocarbamide when combination: Asia
Sodium sulphate=2~3: 1；The plastic regulator is hydroxyethylidene diphosphonic acid salt；
The polyethyleneimine is one of low molecular weight polyethylene imines and high molecular weight polyethyleneimine or combines, and when combination is low
Molecular weight polyethyleneimine: high molecular weight polyethyleneimine=1~2: 1, wherein the low molecular weight polyethylene imines is opposite
Molecular mass is 3000-3800, and the relative molecular mass of the high molecular weight polyethyleneimine is 18000-25000.
2. the wide stifled frozen glue of temperature high salinity tune according to claim 1, it is characterised in that: the frozen glue is by polymerizeing owner
0.3 part~0.7 part of agent, 0.4 part~0.75 part of crosslinking agent, 0.2 part~0.5 part of promotor, increase steady 0.05 part~0.3 part of agent, at
0.05 part~0.3 part of glue regulator, excess water composition, dosage are parts by weight, and the sum of parts by weight of said components are 100.
3. the wide stifled frozen glue of temperature high salinity tune according to claim 1, it is characterised in that: the frozen glue is by polymerizeing owner
0.3 part~0.4 part of agent, 0.2 part~0.3 part of promotor, increases steady 0.05 part of agent~0.1 part, plastic at 0.4 part~0.5 part of crosslinking agent
0.05 part~0.1 part of regulator, excess water composition, dosage are parts by weight, and the sum of parts by weight of said components are 100.
4. the wide stifled frozen glue of temperature high salinity tune according to claim 1, it is characterised in that: the frozen glue is by polymerizeing owner
0.3 part of agent, 0.2 part of promotor, increases steady 0.05 part of agent, 0.05 part of plastic regulator, excess water composition, dosage at 0.5 part of crosslinking agent
For parts by weight, the sum of the parts by weight of said components are 100.
5. the wide stifled frozen glue of temperature high salinity tune according to claim 1, it is characterised in that: the frozen glue is by polymerizeing owner
0.5 part of agent, 0.4 part of promotor, increases steady 0.2 part of agent, 0.15 part of plastic regulator, excess water composition, dosage at 0.6 part of crosslinking agent
For parts by weight, the sum of the parts by weight of said components are 100.
6. the wide stifled frozen glue of temperature high salinity tune according to claim 1, it is characterised in that: the frozen glue is by polymerizeing owner
0.3 part of agent, 0.2 part of promotor, increases steady 0.05 part of agent, 0.05 part of plastic regulator, excess water composition, dosage at 0.5 part of crosslinking agent
For parts by weight, the sum of the parts by weight of said components are 100.
7. the wide stifled frozen glue of temperature high salinity tune according to claim 1, it is characterised in that: the frozen glue is by polymerizeing owner
0.7 part of agent, 0.5 part of promotor, increases steady 0.3 part of agent, 0.3 part of plastic regulator, excess water composition, dosage at 0.75 part of crosslinking agent
For parts by weight, the sum of the parts by weight of said components are 100.
8. the wide stifled frozen glue of temperature high salinity tune according to claim 1, it is characterised in that: the frozen glue is by polymerizeing owner
1.0 parts of agent, 1.0 parts of promotor, increases steady 0.45 part of agent, 0.5 part of plastic regulator, excess water composition, dosage at 1.0 parts of crosslinking agent
For parts by weight, the sum of the parts by weight of said components are 100.
9. the wide stifled frozen glue of temperature high salinity tune according to claim 1, it is characterised in that: the acrylamide/2- third
The relative molecular mass of acrylamide base -2- methyl propane sulfonic acid copolymer is 100 × 104~1000 × 104, ion degree be 5%~
30%；The excess water is salinity 0~10 × 104The sodium-chloride water solution of mg/L.
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