CN108570122A - Caves oil reservoir is from spread chemical clapboard composition and its method for implanting - Google Patents
Caves oil reservoir is from spread chemical clapboard composition and its method for implanting Download PDFInfo
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- CN108570122A CN108570122A CN201810310584.0A CN201810310584A CN108570122A CN 108570122 A CN108570122 A CN 108570122A CN 201810310584 A CN201810310584 A CN 201810310584A CN 108570122 A CN108570122 A CN 108570122A
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- caves
- oil reservoir
- chemical clapboard
- spread
- oil
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- 239000000126 substance Substances 0.000 title claims abstract description 90
- 235000019994 cava Nutrition 0.000 title claims abstract description 74
- 239000000203 mixture Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 36
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 23
- 239000001301 oxygen Substances 0.000 claims abstract description 23
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims abstract description 22
- RKMGAJGJIURJSJ-UHFFFAOYSA-N 2,2,6,6-tetramethylpiperidine Chemical compound CC1(C)CCCC(C)(C)N1 RKMGAJGJIURJSJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 10
- VDVUCLWJZJHFAV-UHFFFAOYSA-N 2,2,6,6-tetramethylpiperidin-4-ol Chemical compound CC1(C)CC(O)CC(C)(C)N1 VDVUCLWJZJHFAV-UHFFFAOYSA-N 0.000 claims description 7
- 150000002978 peroxides Chemical class 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 96
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 12
- 238000005452 bending Methods 0.000 description 11
- 238000006116 polymerization reaction Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000000178 monomer Substances 0.000 description 8
- 239000004793 Polystyrene Substances 0.000 description 7
- 229920002223 polystyrene Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000005192 partition Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 150000003053 piperidines Chemical class 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- 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
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/32—Preventing gas- or water-coning phenomena, i.e. the formation of a conical column of gas or water around wells
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Polymerisation Methods In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to technical field of oilfield chemistry more particularly to a kind of Caves oil reservoirs from spread chemical clapboard composition and its method for implanting.Wherein, Caves oil reservoir of the invention is from spread chemical clapboard composition, including：Styrene, divinylbenzene, di-t-butyl peroxide, 4 hydroxyl, 2,2,6,6 tetramethyl piperidine, 1 oxygen radical.Caves oil reservoir by the present invention is excellent from Caves oil reservoir prepared by spread chemical clapboard composition from spread chemical clapboard heat resistance, can be in 130 DEG C or more, salinity 20 × 104Mg/L in the high-temperature oil reservoir environment that oils to play the role of effectively controlling bottom water.
Description
Technical field
The present invention relates to technical field of oilfield chemistry more particularly to a kind of Caves oil reservoirs from spread chemical clapboard composition
And its method for implanting.
Background technology
Bottom water coning is the major reason for reducing bottom water reservoir well yield and recovery ratio.For Caves bottom water reservoir,
Oil reservoir with pore type and fractured reservoirs there is larger difference, reservoir mesoporous, seam, hole to coexist, medium-and-large-sized ancient solution cavity
System is its main reservoir space.Reservoir scale is spatially varying larger, and reservoir space distribution is discontinuous.When oil, gas well
After operation, due to the influence of oil, water or gas and water gravitational difference inside oil, gas-bearing formation, it is easy to happen water-coning phenomena.With oil recovery, gas velocity
Degree increases, and water cone constantly rises, and breaks through and enters shaft bottom, causes grease or air water with producing, and so that oil, gas yield is reduced, generates bottom water
With oil recovery, the tapered process being longitudinally propelling of gas, therefore bottom water coning is unfavorable to the exploitation of oil reservoir, gas reservoir.
Chemical clapboard control bottom water technology is always the effective means that oil field administers bottom water coning, realizes oil reservoir stable yields.But with
The exploitation in oil field, characteristics of reservoirs and environment constantly change, and after especially oil reservoir enters the High water cut productive life, long-period water drive makes oil
Hide development contradiction it is increasingly complex, existing chemical clapboard control bottom water technology, especially can effectively using technology always lag behind oil
The needs of field exploitation.The material for preparing chemical clapboard at present mainly has polymer gel and silicate gel etc..For certain high
Warm deep-well Caves oil reservoir, reservoir temperature can reach 130 DEG C, since common polyacrylamide gel holds under the high temperature conditions
It easily degrades, leads to frozen glue syneresis so that plugging effect is deteriorated.And the density of silicate gel is larger, in Caves
It is easy to sink to the bottom in water flooding in oil reservoir.Therefore, frozen glue and silicate gel are not suitable for the Caves oil applied to high temperature and pressure
It hides.Therefore a kind of novel chemical clapboard is developed for solving the problems, such as that the bottom water coning of Caves oil reservoir has great importance.
Invention content
In order to solve the above technical problem, the present invention provides a kind of Caves oil reservoirs from spread chemical clapboard composition and
Its method for implanting.
According to an aspect of the present invention, the present invention provides a kind of Caves oil reservoirs from spread chemical clapboard composition, wraps
Include styrene, divinylbenzene, di-t-butyl peroxide, 4- hydroxyl -2,2,6,6- tetramethyl piperidine -1- oxygen radicals.
Above-mentioned Caves oil reservoir is from spread chemical clapboard composition, by weight percentage, including：Styrene 99%,
Divinylbenzene 0.4-0.6%, di-t-butyl peroxide 0.3-0.5%, 4- hydroxyl -2,2,6,6- tetramethyl piperidine -1- oxygen are free
Base 0.05-0.15%.
Above-mentioned Caves oil reservoir is from spread chemical clapboard composition, by weight percentage, including：Styrene 99%,
Divinylbenzene 0.6%, di-t-butyl peroxide 0.3%, 4- hydroxyls -2,2,6,6- tetramethyl piperidine -1- oxygen radicals 0.1%.
According to another aspect of the present invention, the present invention provides a kind of Caves oil reservoirs from spread chemical clapboard composition
Method for implanting includes the following steps：
(1) styrene, divinylbenzene are poured into agitator tank and stirs 20-40min；
(2) by di-t-butyl peroxide, 4- hydroxyls -2,2,6,6- tetramethyl piperidine -1- oxygen radicals are added in agitator tank,
Continue stirring 5-15min and obtains Caves oil reservoir from spread chemical clapboard composition；
(3) Caves oil reservoir is injected into stratum from spread chemical clapboard composition；
(4) it is pumped into displacement fluid, closing well, stewing well drives a well after 2-4 days.
Above-mentioned Caves oil reservoir notes Caves oil reservoir from spread from the method for implanting of spread chemical clapboard composition in pump
It further include the process of pump note prepad fluid before chemical clapboard composition.
For above-mentioned Caves oil reservoir from the method for implanting of spread chemical clapboard composition, the prepad fluid, displacement fluid are clear
Water.
Above-mentioned Caves oil reservoir is from the method for implanting of spread chemical clapboard composition, step (1), by styrene, two
Ethenylbenzene pours into agitator tank stirring 30min.
Above-mentioned Caves oil reservoir is from the method for implanting of spread chemical clapboard composition, step (2), by two uncle of peroxidating
Butyl, 4- hydroxyls -2,2,6,6- tetramethyl piperidine -1- oxygen radicals are added in agitator tank, continue to stir 10min.
Above-mentioned Caves oil reservoir from the method for implanting of spread chemical clapboard composition, step (4), after 3 days open by stewing well
Well.
By the present invention Caves oil reservoir from Caves oil reservoir prepared by spread chemical clapboard composition from spread chemistry every
Plate has the advantages that：
(1) Caves oil reservoir provided by the present invention is excellent from spread chemical clapboard heat resistance, can 130 DEG C or more,
Salinity 20 × 104Mg/L in the high-temperature oil reservoir environment that oils to play the role of effectively controlling bottom water.Product density of the present invention is
1.05g/cm3-1.07g/cm3, between oil, water density, it can freely unfold to form control water partition board between oil, water termination,
With preferable double-thinning property and seal, and there is certain anti-pressure ability.
(2) due to after polymerizeing present invention utilizes styrene monomer temperature tolerance it is good and the characteristics of density is between grease,
It adds crosslinking agent divinylbenzene in monomer to make the polystyrene diaphragm strength bigger generated and in oil reservoir more stablize, more
It has mended polyacrylamide frozen glue and has been not applied to the deficiency of high-temperature oil reservoir, and avoided silicate gel and sink in water flooding
The shortcomings that.
(3) Caves oil reservoir provided by the present invention is to polymerize to generate after styrene injects stratum from spread chemical clapboard
, and there is certain induction period in polymerization during formation temperature gradually rises, it prevents from occurring in injection process poly-
It closes, avoids the synthesis technology of a series of complex, reduce cost.
(4) product has many advantages, such as construction is simple, efficient, at low cost, suitable Caves oil, gas reservoir, can be effective
It solves the problems, such as High water cut caused by Caves oil, gas reservoir bottom water, there is stronger guidance to domestic and international Caves oil, gas reservoir development
Meaning.
Description of the drawings
Fig. 1 is schematic diagram of the Caves oil reservoir of the invention prepared from spread chemical clapboard in the earth formation, wherein 11 be molten
Hole type reservoir is from spread chemical clapboard, and 12 be oil-gas Layer, and 13 be water layer, and 14 be oil well；
Fig. 2 is Caves oil reservoir from spread chemical clapboard medicament injection technology, wherein 21,22,23 be agitator tank, 31,32
For pump truck or stifled pump is adjusted, 41,42,43,44,45,46,47,48,49,50 be valve, and 61 be production tree, and 62 be oil pipe, and 63 be set
Pipe.
Specific implementation mode
In order to fully understand the purpose of the present invention, feature and effect, by following specific implementation modes, the present invention is made detailed
It describes in detail bright.For the process of the present 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.
System in Tahe Oilfield high water-cut well, sudden water flooding well caused by bottom water increase year by year, have seriously affected oil well productivity, to the greatest extent
Pipe uses many water-plugging techniques, but effect is general.Main cause one be reservoir configuration complexity, mainly using solution cavity, crack as
The flowing space is preserved, difficulty of governance is big；Second is that reservoir condition is harsh, between 120-140 DEG C of temperature, water flooding total salinity 20 ×
104Mg/L or more causes the unstable of chemical agent, reduces regulation effect.Chemical clapboard control bottom water technology is always oil field
The effective means administered bottom water coning, realize oil reservoir stable yields, but the material for preparing chemical clapboard at present mainly has polymer gel
With silicate gel etc..For certain high temperature deep well Caves oil reservoirs, reservoir temperature can reach 130 DEG C, since common gathers
Acrylamide frozen glue is easy to happen degradation under the high temperature conditions, leads to frozen glue syneresis so that plugging effect is deteriorated.And silicic acid
The density of salt gel is larger, is easy to sink to the bottom in water flooding in Caves oil reservoir.For Caves oil reservoir high water-cut well, sudden and violent property
Watered-out well Controlling research is not yet ripe.Therefore, bottom water cone of a kind of novel chemical clapboard of development for solution Caves oil reservoir
Have great importance into problem.
According to an aspect of the present invention, the present invention provides a kind of Caves oil reservoirs from spread chemical clapboard composition,
Including：Styrene, divinylbenzene, di-t-butyl peroxide, 4- hydroxyl -2,2,6,6- tetramethyl piperidine -1- oxygen radicals
(TEMP)。
Wherein, by weight percentage, each component content is：Styrene 99%, divinylbenzene 0.4-0.6%, peroxidating
Di-t-butyl 0.3-0.5%, 4- hydroxyl -2,2,6,6- tetramethyl piperidine -1- oxygen radicals 0.05-0.15%；Preferably, benzene second
Alkene 99%, divinylbenzene 0.6%, di-t-butyl peroxide 0.3%, 4- hydroxyls -2,2,6,6- tetramethyl piperidine -1- oxygen radicals
0.1%.
It is well known by those skilled in the art that above-mentioned component mass ratio is different, Caves oil reservoir is from spread chemical clapboard shape
At time and intensity also differ.
Styrene, divinylbenzene, di-t-butyl peroxide, 4- hydroxyl -2,2,6,6- tetramethyls used in the present invention
Piperidines -1- oxygen radicals are all market sale product, and the wherein purity of styrene is that analysis is pure.
The structural formula category linear structure for the polystyrene that styrene monomer is generated by polymerization, but due to molecule chain carbon atom
On have the huge phenyl groups of consecutive intervals, this structure determines that polystyrene has that quality is firm, softening temperature is low, molding
The characteristics of performance is good, water-tolerant, chemical stability are reduced with the raising of temperature.
Due to the structural formula category linear structure of polystyrene, intensity is low when uncrosslinked, easily breaks, and without elasticity, diethyl
The effect of alkene benzene is exactly to generate chemical bond between the polystyrene molecule of line style, so that linear molecule is connected with each other, is formed
Reticular structure improves the intensity and elasticity of polystyrene.
Di-t-butyl peroxide is used to cause free radical polymerization and the copolymerization of styrene monomer.
4- hydroxyls -2,2, the progress that 6,6- tetramethyl piperidine -1- oxygen radicals are used to prevent styrene polymerization from acting on, in benzene
Induction period (a period of time that i.e. polymerization speed is zero), 4- hydroxyls -2,2,6,6- tetramethyl piperidines-are generated in ethylene polymerisation process
After 1- oxygen radicals run out of, induction period terminates, then styrene is polymerize by the normal speed in the presence of no polymerization inhibitor.
For the present invention by using the synergistic effect of above-mentioned four kinds of substances, the temperature tolerance for improving styrene polymer (can be
130 DEG C or more, salinity 20 × 104Mg/L in the high-temperature oil reservoir environment that oils to play the role of effectively controlling bottom water), crushing resistance,
Double thin property and seal.Due to the presence of polymerization inhibitor, Caves oil reservoir of the invention from spread chemical clapboard is injected in monomer
Polymerization generates behind stratum, and has certain induction period in polymerization during formation temperature gradually rises, and prevents from noting
It polymerize during entering, avoids the synthesis technology of a series of complex, reduce production cost.
According to another aspect of the present invention, the present invention provides a kind of Caves oil reservoirs from spread chemical clapboard composition
Method for implanting, by distinctive technique by a certain amount of baffle combination object inject stratum formed partition board, specifically, including walk as follows
Suddenly：
(1) styrene, divinylbenzene are poured into agitator tank and stirs 20-40min, preferably 30min；
(2) by di-t-butyl peroxide, 4- hydroxyls -2,2,6,6- tetramethyl piperidine -1- oxygen radicals are added in agitator tank,
Continue stirring 5-15min (preferably 10min) and obtains Caves oil reservoir from spread chemical clapboard composition；
(3) above-mentioned Caves oil reservoir is injected into stratum from spread chemical clapboard composition；
(4) it is pumped into displacement fluid, closing well, stewing well drives a well for 2-4 days after (preferably stewing well 3 days).
Wherein, further include the pump note prepad fluid into stratum from before spread chemical clapboard composition in pump note Caves oil reservoir
Process.
Wherein, the prepad fluid, displacement fluid are clear water.
In a preferred embodiment, the injection of a kind of Caves oil reservoir of the invention from spread chemical clapboard composition
Method includes the following steps：
(1) as shown in Fig. 2, preparing 3 agitator tanks 21,22,23, volume 50m3；2 pump trucks or stifled adjust pump 31,32,
Agitator tank is connect by pressure-bearing 10MPa or more with pump truck, and pump truck is connect with production tree oil pipe 62, according to 61 pressure-bearing rank of production tree
Pressure testing is carried out to pipeline, valve.
(2) No. 23 tanks being prepared into clear water, styrene is first added in No. 21 tanks, divinylbenzene carries out uniform stirring stirring 30min,
43,44,46,48,49 valves are opened, 41,42,45,47,50 valves are closed, starts No. 31 pump trucks or stifled tune pump carries out pump note
Prepad fluid, preferably clear water, prepad fluid dosage are determined according to 62 volume of oil pipe.Pump has noted termination of pumping after prepad fluid, by peroxidating two
No. 21 tanks stirring 5min are proportionally added after 6,6- tetramethyl piperidine -1- oxygen radicals, open for tertiary butyl, 4- hydroxyls -2,2
41,44,46,48,49 valve closes 42,43,45,47,50 valves, starts No. 31 pump trucks or stifled adjust pumps.
(3) if partition board dosage is more than 40m3Just alternately match liquid with No. 22 agitator tanks, pump has noted partition board solution, by 43,44,
46,48,49 valves are opened, and close 41,42,45,47,50 valves, pump note displacement fluid is preferably clear water, and pump closes after having noted displacement fluid
Well, stewing well drive a well after 3 days.
Wherein, the dosage of baffle combination object is calculated using oval ball conceptual model, and volume is that this well tires out oil production, every
Plate thickness is tested intensity according to laboratory experiment and is determined, can find out cylinder partition board volume, the proportioning is measured according to laboratory experiment
Under density, baffle combination object dosage can be calculated, be this field routine techniques above, be not described in detail herein.
Wherein, by weight percentage, the styrene, divinylbenzene, di-t-butyl peroxide, 4- hydroxyls -2,2,6,
The proportioning of 6- tetramethyl piperidine -1- oxygen radicals is：Styrene 99%, divinylbenzene 0.4-0.6%, di-t-butyl peroxide
0.3-0.5%, 4- hydroxyl -2,2,6,6- tetramethyl piperidine -1- oxygen radicals 0.05-0.15%；Preferably：Styrene 99%,
Divinylbenzene 0.6%, di-t-butyl peroxide 0.3%, 4- hydroxyls -2,2,6,6- tetramethyl piperidine -1- oxygen radicals 0.1%.
The Caves oil reservoir of the present invention is injected stratum by method for implanting according to the invention from spread chemical clapboard composition
Afterwards, in underground polymerisation occurs for monomer, and forming one layer in oil-water interfaces freely unfolds the temperature-resistant anti-salt chemical clapboard grown up (such as
Shown in Fig. 1, wherein 11 be Caves oil reservoir from spread chemical clapboard；12 be oil-gas Layer；13 be water layer；14 be oil well).Experience
Card, Caves oil reservoir of the invention can effectively administer Caves oil reservoir oil well height caused by bottom water from spread chemical clapboard and contain
Water problems.
For the ease of studying property of the Caves oil reservoir of the present invention from spread chemical clapboard, one kind is inventors herein proposed in reality
It tests under the conditions of room and prepares method of the Caves oil reservoir from spread chemical clapboard, it is specific as follows：
(1) monomer is uniformly mixed according to proportioning with crosslinking agent, initiator, polymerization inhibitor, obtains polystyrene chemical clapboard
Raw material；
(2) the chemical clapboard raw material that step (1) obtains is placed in aluminium lid sample bottle, is sealed；
(3) sample bottle is placed in high-temperature tank, and adds water into high-temperature tank, keep water level flat with solution height in sample bottle
Together, it seals；
(4) by high-temperature tank be placed in 130 DEG C of oil bath pan 5-15 hours to get above-mentioned Caves oil reservoir from spread chemistry every
Plate.
The Caves that the Caves oil reservoir prepared by the above method is generated from spread chemical clapboard and in actual production
Oil reservoir is identical from spread chemical clapboard performance, and this method greatly simplifies those skilled in the art to Caves oil reservoir from spread
The research of chemical clapboard.
Embodiment
It is further illustrated the present invention 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.Following implementation
The raw material used in example is that regular market purchase obtains.
Embodiment 1
0.6g divinylbenzenes, 0.3g di-t-butyl peroxides, 0.1gTEMP are added in 99g styrene monomers, stirring is equal
It is even, so that it is uniformly mixed, obtained chemical clapboard raw material is placed in aluminium lid sample bottle, is sealed against.Sample bottle is placed in height
In warm tank, suitable quantity of water (water level is concordant with solution height in sample bottle), sealing are added into high-temperature tank.High-temperature tank is placed in 130
Allow polymerizable raw material up to above-mentioned chemical clapboard in the oil bath pan of DEG C formation temperature.The polymerization of the chemical clapboard raw material at 130 DEG C
Time is 5h, and after testing, the chemical clapboard bending strength of acquisition is 73.42MPa.
Embodiment 2
0.5g divinylbenzenes, 0.4g di-t-butyl peroxides, 0.1gTEMP are added in 99g styrene monomers, stirring is equal
It is even, so that it is uniformly mixed, obtained chemical clapboard raw material is placed in aluminium lid sample bottle, is sealed against.Sample bottle is placed in height
In warm tank, suitable quantity of water (water level is concordant with solution height in sample bottle), sealing are added into high-temperature tank.High-temperature tank is placed in 130
Allow polymerizable raw material up to chemical clapboard in the oil bath pan of DEG C formation temperature.The polymerization time of the chemical clapboard raw material at 130 DEG C
For 9h, after testing, the chemical clapboard bending strength of acquisition is 71.84MPa.
Embodiment 3
0.6g divinylbenzenes, 0.35g di-t-butyl peroxides, 0.05gTEMP, stirring are added in 99g styrene monomers
Uniformly, so that it is fully dissolved, obtained chemical clapboard raw material is placed in aluminium lid sample bottle, is sealed against.Sample bottle is placed in
In high-temperature tank, suitable quantity of water (water level is concordant with solution height in sample bottle), sealing are added into high-temperature tank.High-temperature tank is placed in
Allow polymerizable raw material up to above-mentioned chemical clapboard in the oil bath pan of 130 DEG C of formation temperatures.The chemical clapboard raw material is poly- at 130 DEG C
The conjunction time is 12h, and after testing, the chemical clapboard bending strength of acquisition is 73.08MPa.
Embodiment 4
0.55g divinylbenzenes, 0.3g di-t-butyl peroxides, 0.15gTEMP, stirring are added in 99g styrene monomers
Uniformly, so that it is fully dissolved, obtained chemical clapboard raw material is placed in aluminium lid sample bottle, is sealed against.Sample bottle is placed in
In high-temperature tank, suitable quantity of water (water level is concordant with solution height in sample bottle), sealing are added into high-temperature tank.High-temperature tank is placed in
Allow polymerizable raw material up to above-mentioned chemical clapboard in the water-bath of 130 DEG C of formation temperatures.The chemical clapboard raw material is poly- at 130 DEG C
The conjunction time is 15h, and after testing, the chemical clapboard bending strength of acquisition is 71.92MPa.
Performance test
Using the chemical clapboard obtained in " embodiment 1-4 " as research object, universal test is controlled with CMT-6104 type microcomputers
Machine investigates the bending strength of chemical clapboard provided by the present invention.Specific experiment process is as follows：
1. the chemical clapboard material mechanical obtained in embodiment 1-4 to be cut into the sample of rectangular section product.Sample length 80
± 2mm, wide 10.0 ± 0.2mm, 4.0 ± 0.2mm of thickness.
2. adjusting span L makes symbol L=(16 ± 1) h (thickness average value) and measure to regulate span, it is accurate to 0.5%.
3. sample is symmetrically placed on two bearings, and in span center applied force.
4. maximum deflection power and amount of deflection that record experiment applies in the process, when sample fracture or deformation reach predetermined value (i.e.
Provide amount of deflection) when, off-test.(note：Provide that amount of deflection is 1.5 times of sample thickness h, unit mm)
5. test result is indicated with the arithmetic mean of instantaneous value of every group of 4 samples.Sample is in span other than the one third of part
Fracture, test result is cancelled, and should resample and be tested.
Bending strength is the maximum stress in bend that sample is born in bending process.Bending stress is outside sample span center
The direct stress on surface, is calculated as follows:
In formula：σf--- bending stress, MPa；
The power of P --- application, N；
L --- span, mm；
B --- specimen width, mm；
H --- sample thickness, mm.
Experimental result is as shown in table 1：
Caves oil reservoir prepared by 1 embodiment 1-4 of table is from spread chemical clapboard bending strength test result
Above the experimental results showed that：Caves oil reservoir provided by the invention has good bending resistance strong from spread chemical clapboard
Degree, can effectively bear the pressure difference in production process.
Field experiment example (Confidential experimental)
10 area's well of Tahe Caves oil reservoir, High water cut closing well design 50 side of dosing.It is pumped as follows
Note：
(1) as shown in Fig. 2, preparing 3 agitator tanks 21,22,23, volume 50m3；The pump truck of 2 pressure-bearing 10MPa or more
31,32, agitator tank is connect with pump truck, pump truck is connect with production tree oil 62, according to 61 pressure-bearing rank of production tree to pipeline, valve
Carry out pressure testing；
(2) No. 23 tanks being prepared into clear water, styrene is first added in No. 21 tanks, divinylbenzene carries out uniform stirring stirring 30min,
43,44,46,48,49 valves are opened, close 41,42,45,47,50 valves, it is (preposition that No. 31 pump trucks of startup carry out pump note clear water
Liquid), prepad fluid dosage is 50 sides.Pump has noted termination of pumping after clear water, by di-t-butyl peroxide, 4- hydroxyls -2,2,6,6- tetramethyls
No. 21 tank stirring 5min are added according to ratio shown in table 2 after piperidines -1- oxygen radicals and obtain chemical clapboard composition, open
41,44,46,48,49 valve closes 42,43,45,47,50 valves, starts No. 31 pump trucks.
(3) since baffle combination object dosage is more than 40m3, alternately match liquid with No. 22 agitator tanks, pump has noted baffle combination object,
43,44,46,48,49 valves are opened, 41,42,45,47,50 valves are closed, pump 50 side's clear water (displacement fluid) of note, pump note clear water
Closing well afterwards, stewing well drive a well after 3 days.
Each parameter of slug of table 2 constructing summarizes
After closing well three days, drive a well High water cut, after a week aqueous decline and stabilization, adds up 526 tons of oil-producing.
It follows that the Caves oil reservoir of the present invention can be efficiently applied to Caves oil, gas reservoir from spread chemical clapboard,
It solves the problems, such as Caves oil, High water cut caused by gas reservoir bottom water, has the advantages that construction is simple, efficient, at low cost.
The present invention is hereinbefore disclosed with preferred embodiment, but it should be understood by those skilled in the art that, these
Embodiment is only used for describing the present invention, and should not be construed as limiting the scope of the invention.It should be noted that every 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
The range that should be subject to defined in claims.
Claims (9)
1. a kind of Caves oil reservoir is from spread chemical clapboard composition, which is characterized in that including：Styrene, divinylbenzene, peroxide
Change di-t-butyl, 4- hydroxyl -2,2,6,6- tetramethyl piperidine -1- oxygen radicals.
2. Caves oil reservoir according to claim 1 is from spread chemical clapboard composition, which is characterized in that percentage by weight
Than meter, including：Styrene 99%, divinylbenzene 0.4-0.6%, di-t-butyl peroxide 0.3-0.5%, 4- hydroxyl -2,2,6,
6- tetramethyl piperidine -1- oxygen radicals 0.05-0.15%.
3. Caves oil reservoir according to claim 2 is from spread chemical clapboard composition, which is characterized in that percentage by weight
Than meter, including：Styrene 99%, divinylbenzene 0.6%, di-t-butyl peroxide 0.3%, 4- hydroxyls -2,2,6,6- tetramethyls
Piperidines -1- oxygen radicals 0.1%.
4. claim 1-3 any one of them Caves oil reservoirs are from the method for implanting of spread chemical clapboard composition, feature
It is, includes the following steps：
(1) styrene, divinylbenzene are poured into agitator tank and stirs 20-40min；
(2) by di-t-butyl peroxide, 4- hydroxyls -2,2,6,6- tetramethyl piperidine -1- oxygen radicals are added in agitator tank, continue
Stirring 5-15min obtains Caves oil reservoir from spread chemical clapboard composition；
(3) Caves oil reservoir is injected into stratum from spread chemical clapboard composition；
(4) it is pumped into displacement fluid, closing well, stewing well drives a well after 2-4 days.
5. Caves oil reservoir according to claim 4 is from the method for implanting of spread chemical clapboard composition, which is characterized in that
Further include the process of pump note prepad fluid from before spread chemical clapboard composition in pump note Caves oil reservoir.
6. Caves oil reservoir according to claim 5 is from the method for implanting of spread chemical clapboard composition, which is characterized in that
The prepad fluid, displacement fluid are clear water.
7. according to claim 4-6 any one of them Caves oil reservoirs from the method for implanting of spread chemical clapboard composition,
It is characterized in that, in step (1), styrene, divinylbenzene is poured into agitator tank and stir 30min.
8. according to claim 4-7 any one of them Caves oil reservoirs from the method for implanting of spread chemical clapboard composition,
It is characterized in that, in step (2), by di-t-butyl peroxide, 4- hydroxyls -2,2,6,6- tetramethyl piperidine -1- oxygen radicals are added
In agitator tank, continue to stir 10min.
9. according to claim 4-8 any one of them Caves oil reservoirs from the method for implanting of spread chemical clapboard composition,
It is characterized in that, in step (4), stewing well drives a well after 3 days.
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