CN106566503A - Compound profile control agent for plugging large pore path of oil layer and preparation method thereof - Google Patents
Compound profile control agent for plugging large pore path of oil layer and preparation method thereof Download PDFInfo
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- CN106566503A CN106566503A CN201610993452.3A CN201610993452A CN106566503A CN 106566503 A CN106566503 A CN 106566503A CN 201610993452 A CN201610993452 A CN 201610993452A CN 106566503 A CN106566503 A CN 106566503A
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- water
- macropore
- profile control
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- 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
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- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/08—Fiber-containing well treatment fluids
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- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a compound profile control agent for plugging a large pore path of an oil layer and a preparation method thereof. The compound profile control agent is composed of the following components in percentage by weight: 10-30% of water glass, 0.5-3% of ethyl acetate, 0.3-1% of ammonium chloride, 0.1-3% of an additive and the balance of water. The additive is paper pulp or a paper-making waste water fibroid solid. The compound profile control agent for plugging the large pore path of the oil layer disclosed by the invention can overcome the defects that in the prior art, the profile control pressure is small in improving extent and the profile control agent is likely to flee from a corresponding oil well when a profile control well has the large pore path, effectively plugs the large pore path, and has a good profile control effect.
Description
Technical field
The present invention relates to a kind of compounded injectivity profile modifying agents for reservoir plugging macropore and preparation method thereof, belong to oil exploitation
Technical field.
Background technology
The oil field of China mostly is continental deposit, and reservoir heterogeneity is serious.In oil extraction process, waterflooding extraction is main
The oil production method wanted, after experienced long-term injecting water exploitation, because water is rinsed, clay is lost in, and the anisotropism for making stratum deteriorates, compared with
The permeability of high permeability formation is further improved, or even forms macropore channelling, the serious low effective circulation of injection water, some oil reservoirs
Produced Liquid moisture content has reached more than 95%, further improves water development effectiveness very urgent.
In order that injection water is uniformly advanced, injection oil-water displacement efficiency is improved, macropore is blocked frequently with profile control agent.
Conventional water shutoff agent includes gel-type profile control agent and particulate species profile control agent, and wherein gel-type profile control agent is because of its wide material sources, preparation
Simply, it is easy to inject oil reservoir deep, it has also become study most widely used class profile control agent both at home and abroad.Such as, Chinese patent text
Offer CN102807849A and disclose a kind of polyacrylamide gel plugging agent, it includes following material nonionic polyacrylamide
Amine 0.3～0.8%, cross-linking agent A0.6～1.3%, crosslinking agent B 0.45～1.44%, temperature stability agent 0.02～0.04%, pH
Regulator 0.01～0.08%, and the water of surplus, wherein the cross-linking agent A be hexamethylenamine, crosslinking agent B be hydroquinone or
Benzodiazepiness；The temperature stability agent is sodium thiosulfate, sodium sulfite or sodium sulfite；The pH value regulator is hydroxide
Sodium, potassium hydroxide, sodium carbonate or sodium bicarbonate.CN1563259A discloses a kind of inorganic delay silicic acid gel plugging and profile, and this is blocked up
At least one conduct adjusted mainly in waterglass (sodium silicate solution) host in addition ethyl acetate, acetamide and ethanol
Postpone activator, its proportioning is the waterglass of the addition 5～15% in the water of formula ratio, adds 0.1～0.6% acetic acid second
Ester, 0.1～3% acetamide, 0.1～0.3% ethanol；The acetamide can be substituted with Methanamide or phosphoamide, and ethanol can
Substituted with methanol；0.2～0.6% ammonium chloride can also be added.These profile control agents are present in use, during profile control
Pressure ascensional range is little, the problem of macropore plugging effect difference；There is profile control agent during profile control from correspondence oil well in part well
The problem scurried out.
The content of the invention
It is an object of the invention to provide a kind of compounded injectivity profile modifying agents for reservoir plugging macropore, can overcome prior art
When profile control well has macropore, profile control pressure increase rate is little, and macropore plugging effect is poor, and profile control agent is scurried out from correspondence oil well
Shortcoming.
The present invention also aims to provide a kind of preparation method of the compounded injectivity profile modifying agents for reservoir plugging macropore.
In order to realize object above, the technical solution adopted in the present invention is：
A kind of compounded injectivity profile modifying agents for reservoir plugging macropore, consist of the following components in percentage by weight：Waterglass
10～30%, ethyl acetate 0.5～3%, ammonium chloride 0.3～1%, additive 0.1～3%, balance of water；Described additive
For paper pulp or paper waste fibroids solid.
The modulus of the waterglass is 2.8～3.5.In waterglass, Na2O·mSiO2Weight percentage be 30～
35%, the proportion of waterglass is 1.32～1.38.Described waterglass, ethyl acetate and ammonium chloride are commercially available industrial goods.Acetic acid
Purity >=99.5% of ethyl ester；Purity >=99.3% of ammonium chloride.
The paper waste fibroids solid is fiber, filler and the sizing material reclaimed in paper waste.
The paper waste fibroids solid is fiber, filler and the sizing material reclaimed from paper waste by Bubble-floating Method.
Paper pulp is with Plant fiber as raw material, by the obtained fibrous material of processing.Sizing material is added in production process
Glue used in paper-making residue；In process of paper-making wastewater treatment, it is necessary to through the separation of fibre solid material, this part
Material except comprising in addition to fiber also containing production process in the filler that adds andSizing material.Use of the paper-making fibre solid as the present invention
Twice laid can be realized in the raw material of the compounded injectivity profile modifying agents of reservoir plugging macropore, while can be with reduces cost.
A kind of preparation method of the above-mentioned compounded injectivity profile modifying agents for reservoir plugging macropore, comprises the following steps：
1) ethyl acetate and ammonium chloride of formula ratio are added in water, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, add the waterglass of formula ratio, additive and remaining
Water, mix homogeneously is obtained final product.
The compounded injectivity profile modifying agents for reservoir plugging macropore of the present invention, are that ethyl acetate, chlorination are added in waterglass
Ammonium, the H produced by ethyl acetate, ammonium chloride hydrolysis during use+Ca in ion and stratum2+、Mg2+Plasma and silicic acid
Sodium act on, formed it is a kind of containing various silicic acid, silicate in interior gelinite；Simultaneously by paper waste fiber in macropore
Filter product and winding effect, realize effective closure of macropore.
The gelling time of the compounded injectivity profile modifying agents for reservoir plugging macropore of the present invention is 4～48 hours, can be used for one
A little macropores developments cause to inject the deep profile controlling of the serious well of water inefficient cycle, with low cost, pressure-raising range be big, profile control effect
Good advantage, can avoid the occurrence of the problem that profile control agent is scurried out from correspondence oil well, while construction risk can be reduced.
When preparing using the compounded injectivity profile modifying agents for reservoir plugging macropore of the present invention, squeezing pump is directly used by its pump
In entering to need the well of profile control, in the profile control agent duct maximum by resistance minimum-value aperture is preferentially entered, excessive water is used after having noted again
Replace, afterwards closing well Hou Ning, the Hou Ning times are more than 2 times of gelling time, but are no more than 48 hours, after Hou Ning terminates
Recover water filling.After the compounded injectivity profile modifying agents for reservoir plugging macropore using the present invention, oilfield stimulation effect is obvious.
Specific embodiment
With reference to specific embodiment, the present invention is further illustrated.
In specific embodiment, the waterglass described in formula for the compounded injectivity profile modifying agents of reservoir plugging macropore, second
Acetoacetic ester and ammonium chloride are commercially available industrial goods.The modulus of waterglass is 2.8～3.5, Na2O·mSiO2Weight percentage be
30～35%, the proportion of waterglass is 1.32～1.38.Purity >=99.5% of ethyl acetate；The purity of ammonium chloride >=
99.3%.Paper waste paper-making fibre solid is fiber, filler and the sizing material reclaimed from paper waste by Bubble-floating Method.
Embodiment 1：
The compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment are to consist of the following components in percentage by weight：
Waterglass 10%, ethyl acetate 3%, ammonium chloride 0.5%, paper waste fibroids solid 1.5%, balance of water.Wherein water glass
The modulus of glass is 2.8, Na2O·mSiO2Weight percentage be 30%.
The preparation method of the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, comprises the following steps：
1) ethyl acetate and ammonium chloride are added in the water of formula ratio 50%, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, add the waterglass of formula ratio, paper waste fibroids to consolidate
Body and remaining water, mix homogeneously, obtain final product.
After the completion of prepared by the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, you can enter ground with squeezing infusion
Layer.In being pumped into the well for needing profile control, in the profile control agent duct maximum by resistance minimum-value aperture is preferentially entered, after having noted again
Replaced with excessive water, closing well Hou Ning 30 hours afterwards, Hou Ning can recovery water filling after terminating.
Embodiment 2：
The compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment are to consist of the following components in percentage by weight：
Waterglass 20%, ethyl acetate 1%, ammonium chloride 0.8%, paper waste fibroids solid 2%, balance of water.Wherein waterglass
Modulus be 3.0, Na2O·mSiO2Weight percentage be 32%.
The preparation method of the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, comprises the following steps：
1) ethyl acetate and ammonium chloride are added in the water of formula ratio 50%, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, add the waterglass of formula ratio, paper waste fibroids to consolidate
Body and remaining water, mix homogeneously, obtain final product.
After the completion of prepared by the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, you can enter ground with squeezing infusion
Layer.In being pumped into the well for needing profile control, in the profile control agent duct maximum by resistance minimum-value aperture is preferentially entered, after having noted again
Replaced with excessive water, closing well Hou Ning 48 hours afterwards, Hou Ning can recovery water filling after terminating.
Embodiment 3：
The compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment are to consist of the following components in percentage by weight：
Waterglass 15%, ethyl acetate 2%, ammonium chloride 0.9%, paper waste fibroids solid 0.5%, balance of water.Wherein water glass
The modulus of glass is 3.2, Na2O·mSiO2Weight percentage be 35%.
The preparation method of the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, comprises the following steps：
1) ethyl acetate and ammonium chloride are added in the water of formula ratio 50%, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, add the waterglass of formula ratio, paper waste fibroids to consolidate
Body and remaining water, mix homogeneously, obtain final product.
After the completion of prepared by the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, you can enter ground with squeezing infusion
Layer.In being pumped into the well for needing profile control, in the profile control agent duct maximum by resistance minimum-value aperture is preferentially entered, after having noted again
Replaced with excessive water, closing well Hou Ning 24 hours afterwards, Hou Ning can recovery water filling after terminating.
Embodiment 4：
The compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment are to consist of the following components in percentage by weight：
Waterglass 30%, ethyl acetate 2%, ammonium chloride 1%, paper waste fibroids solid 1%, balance of water.Wherein waterglass
Modulus is 3.1, Na2O·mSiO2Weight percentage be 31%.
The preparation method of the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, comprises the following steps：
1) ethyl acetate and ammonium chloride are added in the water of formula ratio 50%, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, add the waterglass of formula ratio, paper waste fibroids to consolidate
Body and remaining water, mix homogeneously, obtain final product.
After the completion of prepared by the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, you can enter ground with squeezing infusion
Layer.In being pumped into the well for needing profile control, in the profile control agent duct maximum by resistance minimum-value aperture is preferentially entered, after having noted again
Replaced with excessive water, closing well Hou Ning 35 hours afterwards, Hou Ning can recovery water filling after terminating.
Embodiment 5：
The compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment are to consist of the following components in percentage by weight：
Waterglass 12%, ethyl acetate 0.5%, ammonium chloride 0.6%, paper waste fibroids solid 3%, balance of water.Wherein water glass
The modulus of glass is 3.5, Na2O·mSiO2Weight percentage be 33%.
The preparation method of the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, comprises the following steps：
1) ethyl acetate and ammonium chloride are added in the water of formula ratio 50%, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, add the waterglass of formula ratio, paper waste fibroids to consolidate
Body and remaining water, mix homogeneously, obtain final product.
After the completion of prepared by the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, you can enter ground with squeezing infusion
Layer.In being pumped into the well for needing profile control, in the profile control agent duct maximum by resistance minimum-value aperture is preferentially entered, after having noted again
Replaced with excessive water, closing well Hou Ning 40 hours afterwards, Hou Ning can recovery water filling after terminating.
Embodiment 6：
The compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment are to consist of the following components in percentage by weight：
Waterglass 28%, ethyl acetate 0.6%, ammonium chloride 0.3%, paper waste fibroids solid 0.1%, balance of water.Wherein water
The modulus of glass is 2.9, Na2O·mSiO2Weight percentage be 34%.
The preparation method of the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, comprises the following steps：
1) ethyl acetate and ammonium chloride are added in the water of formula ratio 50%, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, add the waterglass of formula ratio, paper waste fibroids to consolidate
Body and remaining water, mix homogeneously, obtain final product.
After the completion of prepared by the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, you can enter ground with squeezing infusion
Layer.In being pumped into the well for needing profile control, in the profile control agent duct maximum by resistance minimum-value aperture is preferentially entered, after having noted again
Replaced with excessive water, closing well Hou Ning 25 hours afterwards, Hou Ning can recovery water filling after terminating.
Embodiment 7：
The compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment are to consist of the following components in percentage by weight：
Waterglass 28%, ethyl acetate 0.6%, ammonium chloride 0.3%, paper pulp 0.1%, balance of water.The modulus of wherein waterglass is
2.9, Na2O·mSiO2Weight percentage be 34%.
The preparation method of the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, comprises the following steps：
1) ethyl acetate and ammonium chloride are added in the water of formula ratio 50%, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, the waterglass of formula ratio, paper pulp and remaining water are added,
Mix homogeneously, obtains final product.
After the completion of prepared by the compounded injectivity profile modifying agents for reservoir plugging macropore of the present embodiment, you can enter ground with squeezing infusion
Layer.In being pumped into the well for needing profile control, in the profile control agent duct maximum by resistance minimum-value aperture is preferentially entered, after having noted again
Replaced with excessive water, closing well Hou Ning 28 hours afterwards, Hou Ning can recovery water filling after terminating.
Test example
G322 wells are a bite water injection wells in ancient city oil field, there is profile control agent in conventional profile control measures from correspondence oil well
G321, G323 scurry out problem, and macropore development is obvious.In July, 2015 takes profile control measures, injects being used for for above-described embodiment 1
The compounded injectivity profile modifying agents 1700m of reservoir plugging macropore3.Water injection pressure rises to 10.6Mpa by front 5.2MPa is injected, and injects water
Pressure improves 5.4Mpa；Profile control agent is not scurried out from G321 and G323 wells in injection process；G321 well odd-numbered day oil-producings increase to 5.4
Ton, than 2.3 tons of volume increase 135% before enforcement profile control measures.
Due to the compounded injectivity profile modifying agents for reservoir plugging macropore using embodiment 2, G338 well odd-numbered day oil-producings compare measure
Front increase 0.5t, it is still effective at present.
Other water injection wells equally realize that oil well increases using the compounded injectivity profile modifying agents for reservoir plugging macropore of embodiment 3-7
The purpose of product.
Claims (6)
1. a kind of compounded injectivity profile modifying agents for reservoir plugging macropore, it is characterised in that：By following components in percentage by weight group
Into：Waterglass 10～30%, ethyl acetate 0.5～3%, ammonium chloride 0.3～1%, additive 0.1～3%, balance of water；Institute
The additive stated is paper pulp or paper waste fibroids solid.
2. compounded injectivity profile modifying agents for reservoir plugging macropore according to claim 1, it is characterised in that：The waterglass
Modulus be 2.8～3.5.
3. compounded injectivity profile modifying agents for reservoir plugging macropore according to claim 2, it is characterised in that：The waterglass
In, Na2O·mSiO2Weight percentage be 30～35%, the proportion of waterglass is 1.32～1.38.
4. compounded injectivity profile modifying agents for reservoir plugging macropore according to claim 1, it is characterised in that：The papermaking is given up
Water cellulose solid is fiber, filler and the sizing material reclaimed in paper waste.
5. compounded injectivity profile modifying agents for reservoir plugging macropore according to claim 4, it is characterised in that：The papermaking is given up
Water paper-making fibre solid is fiber, filler and the sizing material reclaimed from paper waste by Bubble-floating Method.
6. a kind of preparation method of the as claimed in claim 1 compounded injectivity profile modifying agents for being used for reservoir plugging macropore, its feature exists
In：Comprise the following steps：
1) ethyl acetate and ammonium chloride of formula ratio are added in water, mixture is obtained；
2) under stirring condition, in step 1) in gained mixture, the waterglass of formula ratio, additive and remaining water are added, mix
Close uniform, obtain final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610993452.3A CN106566503A (en) | 2016-11-10 | 2016-11-10 | Compound profile control agent for plugging large pore path of oil layer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610993452.3A CN106566503A (en) | 2016-11-10 | 2016-11-10 | Compound profile control agent for plugging large pore path of oil layer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107573918A (en) * | 2017-08-11 | 2018-01-12 | 中国石油天然气股份有限公司 | A kind of full liquid phase air-flow diversion agent of oil deposit deep part and preparation method thereof |
| CN113308231A (en) * | 2020-02-26 | 2021-08-27 | 中国石油天然气股份有限公司 | Water shutoff agent, preparation method, experimental method and water shutoff method thereof |
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| CN101121880A (en) * | 2007-08-01 | 2008-02-13 | 成都市互利达实业有限公司 | Natural macromolecule modified starch profile control agent for oil field |
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| CN107573918A (en) * | 2017-08-11 | 2018-01-12 | 中国石油天然气股份有限公司 | A kind of full liquid phase air-flow diversion agent of oil deposit deep part and preparation method thereof |
| CN113308231A (en) * | 2020-02-26 | 2021-08-27 | 中国石油天然气股份有限公司 | Water shutoff agent, preparation method, experimental method and water shutoff method thereof |
| CN113308231B (en) * | 2020-02-26 | 2023-01-10 | 中国石油天然气股份有限公司 | Water shutoff agent, preparation method, experimental method and water shutoff method thereof |
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Application publication date: 20170419 |