CN105199695A - Oil pipe protection fluid with temporary plugging function and preparation method and application thereof - Google Patents
Oil pipe protection fluid with temporary plugging function and preparation method and application thereof Download PDFInfo
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- CN105199695A CN105199695A CN201510701439.1A CN201510701439A CN105199695A CN 105199695 A CN105199695 A CN 105199695A CN 201510701439 A CN201510701439 A CN 201510701439A CN 105199695 A CN105199695 A CN 105199695A
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- Prior art keywords
- temporary plugging
- protection
- plugging function
- oil pipes
- oil
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000012530 fluid Substances 0.000 title abstract description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 36
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 24
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims abstract description 18
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 13
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 12
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 12
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 12
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 12
- 229920002678 cellulose Polymers 0.000 claims abstract description 12
- 239000001913 cellulose Substances 0.000 claims abstract description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910001868 water Inorganic materials 0.000 claims abstract description 12
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 73
- 239000002253 acid Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 13
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 11
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 11
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 11
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 11
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 11
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 5
- 235000011089 carbon dioxide Nutrition 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 10
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract 2
- 238000007710 freezing Methods 0.000 abstract 2
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 abstract 1
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 abstract 1
- AEMOLEFTQBMNLQ-WAXACMCWSA-N alpha-D-glucuronic acid Chemical compound O[C@H]1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-WAXACMCWSA-N 0.000 abstract 1
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 abstract 1
- 230000037361 pathway Effects 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 81
- 230000008859 change Effects 0.000 description 13
- 239000000243 solution Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 239000011435 rock Substances 0.000 description 6
- 239000012071 phase Substances 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Classifications
-
- 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
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention provides an oil pipe protection fluid with a temporary plugging function and a preparation method and an application thereof. 100% of the oil pipe protection fluid with the temporary plugging function is prepared from 76-77% of water, 0.2-0.4% of sodium carbonate, 0.05-0.1% of sodium hydroxide, 0.1-0.2% of methyl alcohol, 0.1-0.2% of 2,2,4-trimethylpentane, 0.3-0.5% of D-glucuronic acid, 0.04-0.1% of lauryl sodium sulfate, 1.3-1.7% of polyanionic cellulose, 0.2-0.4% of carboxymethylcellulose, 0.2-0.5% of methyl tertiary butyl ether, 0.3-0.5% of sulfamic acid, 5-15% of sodium chloride and 5-15% of potassium chloride. The oil pipe protection fluid has low freezing point, will not swell in volume after freezing, has a good antifreezing effect and also has a good temporary plugging function to oil-layer leakage pathways.
Description
Technical field
The present invention relates to a kind of protection of oil pipes liquid with temporary plugging function and preparation method thereof and application, belong to the oil recovery technique field in oilfield development process.
Background technology
In recent years, CO
2-EOR (CO
2-EnhancedOilRecovery, carbonic acid gas gas drive intensified oil reduction) technical development is rapid.By CO
2inject oil reservoir, significantly can not only improve recovery ratio, and can CO be reached
2the object reduced discharging, namely this technology can meet the double requirements of oil reservoir Efficient Development and environmental protection simultaneously.But, at note CO
2in the process of exploitation oil reservoir, liquid CO
2injecting into well the initial stage can vaporize instantaneously, causes local temperature rapid drawdown in pit shaft, oily liquid in pipe is solidified, volumetric expansion, and then burst by oil pipe, and impact is normally produced.
In order to solve this technical problem, the method adopted at present has blank tubing just to note CO
2, oil pipe note deicing fluid etc., these methods all have certain protection of oil pipes effect.But the method that blank tubing injects, after stewing well open flow, needs lower pump to produce, lower pump can impact CO_2 stimulation effect separately, and operating cost increases; The oil well deicing fluid that wastage is large not easily injects oil pipe from oil jacket annular space, operational difficulty, and operating cost increases.
Therefore, be necessary that research and development are a kind of compressible, zero pour is low, still normally protection liquid can be injected the novel protection of oil pipes liquid with temporary plugging function of oil pipe at the oil well that wastage is large from oil jacket annular space.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of protection of oil pipes liquid with temporary plugging function.
The present invention also aims to provide a kind of above-mentioned preparation method with the protection of oil pipes liquid of temporary plugging function.
The present invention also aims to provide a kind of above-mentioned application of protection of oil pipes liquid in the intensified oil reduction of carbonic acid gas gas drive with temporary plugging function.
For reaching above-mentioned purpose, the invention provides a kind of protection of oil pipes liquid with temporary plugging function, the gross weight having the protection of oil pipes liquid of temporary plugging function in this is for 100%, the described protection of oil pipes liquid with temporary plugging function is by the water of 76-77wt%, the sodium carbonate of 0.2-0.4wt%, the sodium hydroxide of 0.05-0.1wt%, the methyl alcohol of 0.1-0.2wt%, 2 of 0.1-0.2wt%, 2, 4-trimethylpentane, the D-Glucose aldehydic acid of 0.3-0.5wt%, the sodium lauryl sulphate of 0.04-0.1wt%, the Polyanionic Cellulose of 1.3-1.7wt%, the carboxymethyl cellulose of 0.2-0.4wt%, the methyl tertiary butyl ether of 0.2-0.5wt%, the thionamic acid of 0.3-0.5wt%, the sodium-chlor of 5-15wt% and the Repone K of 5-15wt% prepare.
Present invention also offers the above-mentioned preparation method with the protection of oil pipes liquid of temporary plugging function, this preparation method comprises the following steps:
A, by sodium carbonate, sodium hydroxide, methyl alcohol, 2,2,4-trimethylpentane, D-Glucose aldehydic acid, sodium lauryl sulphate, Polyanionic Cellulose, carboxymethyl cellulose, methyl tertiary butyl ether, thionamic acid are added to the water in order successively, stir, obtain solution A;
B, in described solution A, add sodium-chlor, Repone K, stir, there is described in obtaining the protection of oil pipes liquid of temporary plugging function.
According to method of the present invention, preferably, the churning time described in step a is 60-90min.
According to method of the present invention, preferably, the churning time described in step b is 20-30min.
According to method of the present invention, preferably, step a, step b carry out all at normal temperatures.
Present invention also offers the above-mentioned application of protection of oil pipes liquid in the intensified oil reduction of carbonic acid gas gas drive with temporary plugging function.
The protection of oil pipes liquid with temporary plugging function provided by the invention is by water, sodium carbonate, sodium hydroxide, methyl alcohol, 2; 2; the gas-liquid system of a kind of stable existence that 4-trimethylpentane, D-Glucose aldehydic acid, sodium lauryl sulphate, Polyanionic Cellulose, carboxymethyl cellulose, methyl tertiary butyl ether (MTBE), thionamic acid, sodium-chlor and Repone K are prepared by physics, chemical reaction; belong to compressible fluid; and its zero pour low (zero pour is-13 DEG C); solidify rear volume not expand, there is good antifreezing effect.After temperature is lower than-13 DEG C, the protection of oil pipes liquid with temporary plugging function starts to solidify, and liquid phase expands, and gas phase is compressed, and gas phase, liquid phase are in a kind of equilibrium state all the time, so this overall volume with the protection of oil pipes liquid of temporary plugging function can not change.
The protection of oil pipes liquid with temporary plugging function provided by the invention has good temporary plugging function to oil reservoir leakage channel, can first temporary leak stopping lost territory layer in the well construction that wastage is large, sets up circulation passage, thus ensures that protection liquid normally injects oil pipe.And; the protection of oil pipes liquid with temporary plugging function provided by the invention is that a kind of size-grade distribution is wide; almost be applicable to the deformable bridge particle on all stratum; effective shutoff can be produced to oil reservoir when pore throat diameter clearly need not be predicted; and shutoff is quick, plugged zone is thin; degradation time is controlled, and the row of returning is thorough.
Accompanying drawing explanation
Fig. 1 is action principle and the oil pipe diagrammatic cross-section with the protection of oil pipes liquid of temporary plugging function of the present invention;
Fig. 2 is that when injecting oil phase in application examples 4 step 1, inlet pressure is graphic representation over time;
Fig. 3 for inject in application examples 4 step 2 that embodiment 1 provides there is the protection of oil pipes liquid of temporary plugging function time, inlet pressure is graphic representation over time.
Embodiment
The Advantageous Effects of implementation process of the present invention and generation will be explained by specific embodiment and Figure of description below, be intended to help reader to understand essence of the present invention and feature better, but not as can the restriction of practical range to this case.
Embodiment 1
Present embodiments provide a kind of protection of oil pipes liquid with temporary plugging function, the gross weight having the protection of oil pipes liquid of temporary plugging function in this is for 100%, the described protection of oil pipes liquid with temporary plugging function is by the water of 76.6wt%, the sodium carbonate of 0.2%, the sodium hydroxide of 0.05wt%, the methyl alcohol of 0.1wt%, 2 of 0.2wt%, 2, 4-trimethylpentane, the D-Glucose aldehydic acid of 0.4wt%, the sodium lauryl sulphate of 0.05wt%, the Polyanionic Cellulose of 1.5wt%, the carboxymethyl cellulose of 0.3wt%, the methyl tertiary butyl ether of 0.3wt%, the thionamic acid of 0.3wt%, the sodium-chlor of 15wt% and the Repone K of 5wt% prepare.
Embodiment 2
Present embodiments provide the preparation method with the protection of oil pipes liquid of temporary plugging function of embodiment 1, wherein, this preparation method comprises the following steps:
Under a, normal temperature condition, water is added in mixing vessel and stir; According to the proportioning with each component in the protection of oil pipes liquid of temporary plugging function that embodiment 1 provides, by sodium carbonate, sodium hydroxide, methyl alcohol, 2,2,4-trimethylpentane, D-Glucose aldehydic acid, sodium lauryl sulphate, Polyanionic Cellulose, carboxymethyl cellulose, methyl tertiary butyl ether (MTBE), thionamic acid add stirring in mixing vessel in order successively and, after 90 minutes, obtain solution A;
B, in above-mentioned solution A, add sodium-chlor, Repone K, stir 20 minutes, there is described in namely obtaining the protection of oil pipes liquid of temporary plugging function.
Embodiment 3
Present embodiments provide a kind of protection of oil pipes liquid with temporary plugging function, the gross weight having the protection of oil pipes liquid of temporary plugging function in this is for 100%, the described protection of oil pipes liquid with temporary plugging function is by the water of 76.72wt%, the sodium carbonate of 0.3wt%, the sodium hydroxide of 0.08wt%, the methyl alcohol of 0.2wt%, 2 of 0.1wt%, 2, 4-trimethylpentane, the D-Glucose aldehydic acid of 0.3wt%, the sodium lauryl sulphate of 0.1wt%, the Polyanionic Cellulose of 1.3wt%, the carboxymethyl cellulose of 0.4wt%, the methyl tertiary butyl ether (MTBE) of 0.2wt%, the thionamic acid of 0.4wt%, the sodium-chlor of 10wt% and the Repone K of 10wt% prepare.
Embodiment 4
Present embodiments provide the preparation method with the protection of oil pipes liquid of temporary plugging function of embodiment 3, wherein, this preparation method comprises the following steps:
Under a, normal temperature condition, water is added in mixing vessel and stirs; According to the proportioning with each component in the protection of oil pipes liquid of temporary plugging function that embodiment 3 provides, by sodium carbonate, sodium hydroxide, methyl alcohol, 2,2,4-trimethylpentane, D-Glucose aldehydic acid, sodium lauryl sulphate, Polyanionic Cellulose, carboxymethyl cellulose, methyl tertiary butyl ether (MTBE), thionamic acid add stirring in mixing vessel in order successively and, after 60 minutes, obtain solution A;
B, in above-mentioned solution A, add sodium-chlor, Repone K, stir 30 minutes, there is described in namely obtaining the protection of oil pipes liquid of temporary plugging function.
Embodiment 5
Present embodiments provide a kind of protection of oil pipes liquid with temporary plugging function, the gross weight having the protection of oil pipes liquid of temporary plugging function in this is for 100%, the described protection of oil pipes liquid with temporary plugging function is by the water of 76.06wt%, the sodium carbonate of 0.4wt%, the sodium hydroxide of 0.1wt%, the methyl alcohol of 0.15wt%, 2 of 0.15wt%, 2, 4-trimethylpentane, the D-Glucose aldehydic acid of 0.5wt%, the sodium lauryl sulphate of 0.04wt%, the Polyanionic Cellulose of 1.4wt%, the carboxymethyl cellulose of 0.2wt%, the methyl tertiary butyl ether (MTBE) of 0.5wt%, the thionamic acid of 0.5wt%, the sodium-chlor of 5wt% and the Repone K of 15wt% prepare.
Embodiment 6
Present embodiments provide the preparation method with the protection of oil pipes liquid of temporary plugging function of embodiment 5, wherein, this preparation method comprises the following steps:
Under a, normal temperature condition, water is added in mixing vessel and stirs; According to the proportioning with each component in the protection of oil pipes liquid of temporary plugging function that embodiment 5 provides, by sodium carbonate, sodium hydroxide, methyl alcohol, 2,2,4-trimethylpentane, D-Glucose aldehydic acid, sodium lauryl sulphate, Polyanionic Cellulose, carboxymethyl cellulose, methyl tertiary butyl ether (MTBE), thionamic acid add stirring in mixing vessel in order successively and, after 80 minutes, obtain solution A;
B, in above-mentioned solution A, add sodium-chlor, Repone K, stir 25 minutes, there is described in namely obtaining the protection of oil pipes liquid of temporary plugging function.
Application examples 1
Should the use-case zero pour with the protection of oil pipes liquid of temporary plugging function that embodiment 1 is provided and solidify rear volume change and test, this test comprises following concrete steps:
(1) there is the mensuration of the protection of oil pipes liquid zero pour of temporary plugging function
Get the protection of oil pipes liquid sample with temporary plugging function that 4 embodiments 1 provide, place it in the environment of-12 DEG C ,-12.5 DEG C ,-13 DEG C ,-13.5 DEG C (corresponding to sample 1-sample 4 respectively) after 24h respectively, observe the state of 4 samples.Experimental result is as shown in table 1.
Table 1
| Title | Temperature | State |
| Sample 1 | -12℃ | Do not solidify |
| Sample 2 | -12.5℃ | Do not solidify |
| Sample 3 | -13℃ | Solidify |
| Sample 4 | -13.5℃ | Solidify |
Experimental result as can be seen from table 1: the zero pour of what embodiment 1 provided the have protection of oil pipes liquid of temporary plugging function is-13 DEG C, shows that it has good antifreezing effect.
(2) the protection of oil pipes liquid with temporary plugging function solidifies the mensuration of rear volume change
Get the protection of oil pipes liquid sample with temporary plugging function that 7 embodiments 1 provide; the volume of each sample is 300mL; test it respectively at-20 DEG C, the volume change before and after solidifying under normal pressure, 0.5MPa, 1MPa, 1.5MPa, 2.0MPa, 2.5MPa, 3.0Mpa (corresponding to sample 1-sample 7 respectively).Experimental result is as shown in table 2.
Table 2
Experimental result as can be seen from table 2, the protection of oil pipes liquid of what embodiment 1 provided have temporary plugging function has extraordinary compressibility, solidifies rear volume and change hardly under normal pressure, and add after certain pressure solidifies at liquid level, volume remains unchanged.
Application examples 2
Should the use-case zero pour with the protection of oil pipes liquid of temporary plugging function that embodiment 3 is provided and solidify rear volume change and test, this test comprises following concrete steps:
The measuring method that the measuring method of the protection of oil pipes liquid zero pour of temporary plugging function that what embodiment 3 provided have and liquid thereof solidify rear volume change is identical with method corresponding in application examples 1, and test result is as shown in table 3.
Table 3
Experimental result as can be seen from table 3: the zero pour of what embodiment 3 provided the have protection of oil pipes liquid of temporary plugging function is-13 DEG C, shows that it has good antifreezing effect; The protection of oil pipes liquid with temporary plugging function that simultaneously embodiment 3 provides has extraordinary compressibility, solidifies rear volume and change hardly under normal pressure, and add after certain pressure solidifies at liquid level, volume remains unchanged.
Application examples 3
Should the use-case zero pour with the protection of oil pipes liquid of temporary plugging function that embodiment 5 is provided and solidify rear volume change and test, this test comprises following concrete steps:
The measuring method of the protection of oil pipes liquid zero pour of temporary plugging function that what embodiment 5 provided have and to solidify the measuring method of rear volume change identical with method corresponding in application examples 1, test result is as shown in table 4.
Table 4
Experimental result as can be seen from table 4: the zero pour of what embodiment 5 provided the have protection of oil pipes liquid of temporary plugging function is-13 DEG C, shows that it has good antifreezing effect; The protection of oil pipes liquid with temporary plugging function that simultaneously embodiment 5 provides has extraordinary compressibility, solidifies rear volume and change hardly under normal pressure, and add after certain pressure solidifies at liquid level, volume remains unchanged.
Application examples 4
Should provide the application of the seal-off effect in the intensified oil reduction of carbonic acid gas gas drive of the protection of oil pipes liquid with temporary plugging function that embodiment 1 provides by use-case, wherein, this application comprises the following steps:
Should the experiment material used of use-case as shown in table 5.
Table 5
| Normal saline solution | Salinity is 20000mg/L |
| Crude oil | 80 DEG C of lower densities are 0.81g/cm 3, viscosity is 3.0mPas |
| Rock core | Perm-plug method is 21.2md |
Experimental procedure:
1, by after above-mentioned rock core vacuumizing, with the saturated 48h of normal saline solution, then crude oil is injected rock core, return pressure, record entry pressure changing;
2, the protection of oil pipes liquid with temporary plugging function embodiment 1 provided injects rock core, returns pressure, record entry pressure changing; Of the present invention there is the protection of oil pipes liquid of temporary plugging function action principle and oil pipe diagrammatic cross-section as shown in Figure 1.
Experimental result: when injecting oil phase in step 1, inlet pressure in time change curve as shown in Figure 2, inject that embodiment 1 provides there is the protection of oil pipes liquid of temporary plugging function time, change curve is as shown in Figure 3 in time for inlet pressure.
As can be seen from Figure 2, when injecting crude oil to rock core, inlet pressure is up to 0.83MPa, is finally stabilized in 0.58MPa; As can be seen from Figure 3, when having the protection of oil pipes liquid of temporary plugging function to rock core injection, inlet pressure is up to 3.79MPa; Experimental result illustrates that the protection of oil pipes liquid with temporary plugging function provided by the invention has good plugging effect to oil reservoir leakage channel.
Claims (6)
1. one kind has the protection of oil pipes liquid of temporary plugging function, wherein, the gross weight having the protection of oil pipes liquid of temporary plugging function in this is for 100%, the described protection of oil pipes liquid with temporary plugging function is by the water of 76-77wt%, the sodium carbonate of 0.2-0.4wt%, the sodium hydroxide of 0.05-0.1wt%, the methyl alcohol of 0.1-0.2wt%, 2 of 0.1-0.2wt%, 2, 4-trimethylpentane, the D-Glucose aldehydic acid of 0.3-0.5wt%, the sodium lauryl sulphate of 0.04-0.1wt%, the Polyanionic Cellulose of 1.3-1.7wt%, the carboxymethyl cellulose of 0.2-0.4wt%, the methyl tertiary butyl ether of 0.2-0.5wt%, the thionamic acid of 0.3-0.5wt%, the sodium-chlor of 5-15wt% and the Repone K of 5-15wt% prepare.
2. the preparation method with the protection of oil pipes liquid of temporary plugging function according to claim 1, wherein, this preparation method comprises the following steps:
A, by sodium carbonate, sodium hydroxide, methyl alcohol, 2,2,4-trimethylpentane, D-Glucose aldehydic acid, sodium lauryl sulphate, Polyanionic Cellulose, carboxymethyl cellulose, methyl tertiary butyl ether, thionamic acid are added to the water in order successively, stir, obtain solution A;
B, in described solution A, add sodium-chlor, Repone K, stir, there is described in obtaining the protection of oil pipes liquid of temporary plugging function.
3. method according to claim 2, wherein, the churning time described in step a is 60-90min.
4. method according to claim 2, wherein, the churning time described in step b is 20-30min.
5. method according to claim 2, wherein, step a, step b carry out all at normal temperatures.
6. the application of protection of oil pipes liquid in the intensified oil reduction of carbonic acid gas gas drive with temporary plugging function according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701439.1A CN105199695B (en) | 2015-10-23 | 2015-10-23 | Oil pipe protection fluid with temporary plugging function and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510701439.1A CN105199695B (en) | 2015-10-23 | 2015-10-23 | Oil pipe protection fluid with temporary plugging function and preparation method and application thereof |
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| CN105199695A true CN105199695A (en) | 2015-12-30 |
| CN105199695B CN105199695B (en) | 2017-03-22 |
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