CN107699218A - Composite mineral gel closure system and preparation method thereof - Google Patents
Composite mineral gel closure system and preparation method thereof Download PDFInfo
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- CN107699218A CN107699218A CN201711009715.3A CN201711009715A CN107699218A CN 107699218 A CN107699218 A CN 107699218A CN 201711009715 A CN201711009715 A CN 201711009715A CN 107699218 A CN107699218 A CN 107699218A
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- water
- composite mineral
- closure system
- mineral gel
- mixture
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Classifications
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- 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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
Abstract
The present invention relates to a kind of composite mineral gel to block system, and it includes following components：(1) complex mineral, it is selected from sodium bentonite, magnesium-based bentonite, organobentonite or its mixture；(2) stabilizer, it is selected from sulfonated phenol formaldehyde resin, sulfonated lignite or polyanion cellulose；(3) dispersant, it is selected from silicate；(4) thickener, it is selected from polyacrylamide and the mixture of phenolic crosslinkers；And (5) water.The invention further relates to the preparation method of composite mineral gel closure system.
Description
Technical field
The present invention relates to a kind of composite mineral gel closure system and preparation method thereof.
Background technology
As oil field development steps into the ultra-high water-containing later stage, influenceed by long-term injecting water exploitation, reservoir permeability, grain
Footpath intermediate value becomes big, and Reservoir Heterogeneity is further exacerbated by.Oil reservoir heterogeneous and note are adopted unbalanced, cause to inject water along extreme
The band channelling of water consumption layer, has a strong impact on water drive and chemical flooding development effectiveness.Correlative study shows：5% extreme water consumption layer band consumption
More than 90% water injection rate, therefore, it is that Extra-high-water-cut stage realizes equilibrium displacement effectively to block extreme water consumption layer band, is improved
The important technical of sweep efficiency.At present, leading occluding body owner will be based on frozen glue and particulate species blocking agent, but it is present
Following weak point：Frozen glue closure system intensity is relatively low, heat endurance is poor, and dosage is big, cost is high；Particulate species blocking agent blocks
Ability is strong, and stratum migration is limited in one's ability；Existing system can not realize that blocking agent deep migration ability and the effective of plugging strength take into account.
Therefore, it is still necessary to continually develop the closure system for the water blockoff that recovers the oil.
The content of the invention
The invention provides a kind of composite mineral gel to block system, and it includes following components：
(1) complex mineral, it is selected from sodium bentonite, magnesium-based bentonite, organobentonite or its mixture；
(2) stabilizer, it is selected from sulfonation tannin extract, sulfonated phenol formaldehyde resin, sulfonated lignite or polyanion cellulose；
(3) dispersant, it is selected from silicate；
(4) thickener, it is selected from polyacrylamide and the mixture of phenolic crosslinkers；And
(5) water.
The invention further relates to the preparation method of described composite mineral gel closure system, it is comprised the steps of：
(1) add water in beaker, be optionally added into pretreating agent；Such as 550r/min- afterwards, under agitation,
800r/min, complex mineral is added, stirred；
(2) stabilizer, dispersant, thickener are added in the beaker of step (1) successively while stirring, lasting stirring, example
As mixing speed be 200r/min-350r/min under stir 2-3h, get a uniform mixture；
(3) heat, such as at 40 DEG C -130 DEG C, reacted the mixed solution in step (2), for example, 20 hours with
On, the composite mineral gel of generation solidification shape.
Composite mineral gel provided by the invention blocks system, and its heat endurance is good, plugging strength is high；Its preparation process,
Using cheap raw material, using simple preparing process, it is readily produced, industrializes.
Embodiment
The present invention provides a kind of composite mineral gel closure system, and it includes following components：
(1) complex mineral, it is selected from sodium bentonite, magnesium-based bentonite, organobentonite or its mixture；
(2) stabilizer, it is selected from sulfonation tannin extract, sulfonated phenol formaldehyde resin, sulfonated lignite or polyanion cellulose；
(3) dispersant, it is selected from silicate；
(4) thickener, it is selected from polyacrylamide and the mixture of phenolic crosslinkers, and
(5) water.
In one embodiment of the invention, the preferred sieving rate of bentonite particle diameter is more than (by 0.074mm screen clothes)
95%, water-absorbent expanding multiple is more than 30.
The phenolic crosslinkers of the present invention are the phenolic resin of solid powdery, its commercially available acquisition, or according to existing
Product prepared by document, such as methenamine (hexa) and phenol are according to 2:1 mass ratio mixes, at 55-65 DEG C
Under the conditions of the product that reacts.
In one embodiment of the invention, 100% gross weight meter based on composite mineral gel closure system, it is compound
Mineral are 5%-25%, stabilizer 0.05%-1.5%, dispersant 0.1%-3.5%, thickener 0.02%-1.2%,
Remaining is water.
In one embodiment of the invention, 100% gross weight meter based on composite mineral gel closure system, it is compound
Mineral are 10%-20%, preferably 12%-18%；Stabilizer is 0.1%-0.5%, preferably 0.1%-0.3%；Dispersant is
0.4%-2.0%, preferably 0.5%-1.6%；Thickener is 0.2%-0.6%, preferably 0.2%-0.4%；Remaining is water.
In one embodiment of the invention, the dispersant be sodium metasilicate, potassium silicate and lithium metasilicate in one kind or
Its mixture.The silicate is preferably instant particulate solid, modulus 1.0.
In one embodiment of the invention, the thickener is polyacrylamide and phenolic crosslinkers according to weight ratio
1：0.6-1.5, preferably 1：The solid content of 0.8-1.2 mixture, wherein polyacrylamide is 88%-95%, preferably 90-
95%, molecular weight is 15,000,000-2,500 ten thousand.
In one embodiment of the invention, the water is non-mineralized water or mineralized water.
In the present invention non-mineralized water mean it is daily seen in the clear water such as underground water, river, or running water, deionized water etc..
In one embodiment of the invention, the water is mineralized water, such as mineralized water is 5000mg/L-10000mg/
L oilfield injection water.Due to by Ca in mineralized water2+、Mg2+Ion influences, and can suppress bentonite aquation, cause bentonite
Grain coagulation, fluid loss increase, and therefore, add pretreating agent in mineralized water before preparation, pretreating agent concentration is in 0.05%-
0.3%, preferably 0.1-0.2%, 100% gross weight meter based on composite mineral gel closure system.
In one embodiment of the invention, the pretreating agent is one in sodium carbonate, sodium hydroxide, sodium acid carbonate
Kind or its mixture.
The invention further relates to the preparation method of composite mineral gel closure system, it is comprised the steps of：
(1) add water in beaker, be optionally added into pretreating agent；Such as 550r/min- afterwards, under agitation,
800r/min, complex mineral is added, stirred；
(2) stabilizer, dispersant, thickener are added in the beaker of step (1) successively while stirring, lasting stirring, example
As mixing speed be 200r/min-350r/min under stir 2-3h, get a uniform mixture；
(3) heat, such as at 40 DEG C -130 DEG C, reacted the mixed solution in step (2), for example, 20 hours with
On, the composite mineral gel of generation solidification shape.
In one embodiment of the invention, the water of step (1) is mineralized water, wherein pretreating agent is added, it is described pre-
Inorganic agent is sodium carbonate, sodium hydroxide, one kind in sodium acid carbonate or its mixture.
In one embodiment of the invention, composite mineral gel preparation method of the present invention, it is specific as follows：
1st, in clear water composite mineral gel preparation
(1) clear water is added in beaker, under 550r/min-600r/min mixing speeds, by above-mentioned percetage by weight
Complex mineral is slowly added in beaker, stirred.
(2) according to above-mentioned percetage by weight, stabilizer, dispersant, thickener are added into step (1) successively while stirring
In beaker, adjustment mixing speed is 300r/min-350r/min, persistently stirs 2-2.5h, gets a uniform mixture.
(3) mixed solution prepared in step (2) is poured into tool plug test tube, be put into baking oven, at 40 DEG C -130 DEG C
Under the conditions of carry out reaction 24h-48h, generation has higher-strength, solidifies the composite mineral gel of shape.
2nd, in mineralized water composite mineral gel preparation
Pretreating agent is added in mineralized water first, pretreating agent concentration is in 0.05%-0.3%.The pretreating agent is
One or more of mixtures in sodium carbonate, sodium hydroxide, sodium acid carbonate.
(1) mineralized water is added in beaker, under 550r/min-600r/min mixing speeds, by above-mentioned weight percent
Pretreating agent is slowly added in beaker by number, is stirred.
(2) under 550r/min-600r/min mixing speeds, complex mineral is slowly added to walk by above-mentioned percetage by weight
Suddenly in the beaker of (1), stir.
(3) according to above-mentioned percetage by weight, stabilizer, dispersant, thickener are added into step (1) successively while stirring
In beaker, adjustment mixing speed is 300r/min-350r/min, persistently stirs 2-2.5h, gets a uniform mixture.
(4) mixed solution prepared in step (3) is poured into tool plug test tube, be put into baking oven, at 40 DEG C -130 DEG C
Under the conditions of carry out reaction 24h-48h, generation has higher-strength, solidifies the composite mineral gel of shape.
In the present invention, unless otherwise indicated, otherwise all numbers or percentage are parts by weight or percetage by weight.
In the present invention, material used is known substance, commercially available or synthesized by known method.
In the present invention, equipment therefor or equipment are conventional equipment or equipment known to the field, commercially available.
The present invention is illustrated below in conjunction with embodiment, but the present invention is not limited to following examples.
Embodiment
Embodiment 1
178.4g running water is added in 300mL beaker, under 600r/min mixing speeds, by 20g Na-bentonites
Soil is slowly added in beaker, is stirred；Then while stirring successively by 0.2g sulfonated phenol formaldehyde resins, 1.0g sodium metasilicate, 0.2g
In the beaker that polyacrylamide and 0.2g phenolic crosslinkers are added to；Mixing speed is adjusted to 300r/min, persistently stirs 2.5h,
Get a uniform mixture；The mixed solution prepared is poured into tool plug test tube, is put into 70 DEG C of baking ovens, reacts 30h, generation
With higher-strength, the composite mineral gel of shape is solidified.The reservoir core plugging rate of the laboratory experiment of gained composite mineral gel is reachable
98%.
Embodiment 2
178g oilfield injection waters (salinity 7674mg/L) are added in 300mL beaker, speed is stirred in 600r/min
Under degree, 0.4g sodium hydroxides are added in beaker, stirred；20g sodium bentonites are slowly added in beaker again, stirred
Mix uniformly；Then while stirring successively by 0.2g sulfonated phenol formaldehyde resins, 1.0g sodium metasilicate, 0.2g polyacrylamides and 0.2g phenolic aldehyde
In the beaker that crosslinking agent is added to；Mixing speed is adjusted to 300r/min, 2.5h is persistently stirred, gets a uniform mixture；Will
The mixed solution prepared is poured into tool plug test tube, is put into 70 DEG C of baking ovens, reacts 30h, and generation has higher-strength, solidifies shape
Composite mineral gel.The reservoir core plugging rate of the laboratory experiment of gained composite mineral gel is up to 98%.
Embodiment 3
708g oilfield injection waters (salinity 9628mg/L) are added in 1000mL beaker, speed is stirred in 600r/min
Under degree, 1.6g sodium acid carbonates are added in beaker, stirred；80g organobentonites are slowly added in beaker again, stirred
Mix uniformly；Then while stirring successively by 0.8g sulfonated phenol formaldehyde resins, 8.0g sodium metasilicate, 0.8g polyacrylamides and 0.8g phenolic aldehyde
In the beaker that crosslinking agent is added to；Mixing speed is adjusted to 350r/min, 2.5h is persistently stirred, gets a uniform mixture；Will
The mixed solution prepared is poured into high temperature resistant stainless steel container, is put into 130 DEG C of baking ovens, reacts 48h, and generation has more high-strength
Degree, solidify the composite mineral gel of shape.The reservoir core plugging rate of the laboratory experiment of gained composite mineral gel is up to 98%.
Embodiment 4
167g running water is added in 300mL beaker, under 600r/min mixing speeds, by 30g organobentonites
It is slowly added in beaker, stirs；Then while stirring successively by 0.4g sulfonated lignites, 2.0g potassium silicates, 0.4g polypropylene
In the beaker that acid amides and 0.2g phenolic crosslinkers are added to；Mixing speed is adjusted to 350r/min, 2.5h is persistently stirred, obtains
Even mixed solution；The mixed solution prepared is poured into tool plug test tube, is put into 40 DEG C of baking ovens, react 48h, generation have compared with
High intensity, solidify the composite mineral gel of shape.The reservoir core plugging rate of the laboratory experiment of gained composite mineral gel is up to 98%.
Embodiment 5
312.4g running water is added in 500mL beaker, under 600r/min mixing speeds, by 80g Na-bentonites
Soil is slowly added in beaker, is stirred；Then while stirring successively by 2.0g sulfonated lignites, 4.0g potassium silicates, 0.8g poly- third
In the beaker that acrylamide and 0.8g phenolic crosslinkers are added to；Mixing speed is adjusted to 350r/min, 2.5h is persistently stirred, obtains
Homogeneous mixture solotion；The mixed solution prepared is poured into tool plug test tube, is put into 90 DEG C of baking ovens, reacts 48h, generation has
Higher-strength, solidify the composite mineral gel of shape.The reservoir core plugging rate of the laboratory experiment of gained composite mineral gel is up to 98%.
Claims (10)
1. a kind of composite mineral gel blocks system, it includes following components：
(1) complex mineral, it is selected from sodium bentonite, magnesium-based bentonite, organobentonite or its mixture；
(2) stabilizer, it is selected from sulfonation tannin extract, sulfonated phenol formaldehyde resin, sulfonated lignite or polyanion cellulose；
(3) dispersant, it is selected from silicate；
(4) thickener, it is selected from polyacrylamide and the mixture of phenolic crosslinkers；And (5) water.
2. the composite mineral gel closure system of claim 1, it is characterised in that based on composite mineral gel closure system
100% gross weight meter, complex mineral 5%-25%, stabilizer concentration 0.05%-1.5%, dispersant concentration 0.1%-
3.5%, thickener concentration 0.02%-1.2%, remaining is water.
3. the composite mineral gel closure system of claim 2, it is characterised in that based on composite mineral gel closure system
100% gross weight meter, complex mineral 10%-20%, preferably
12%-18%；Stabilizer concentration is 0.1%-0.5%, preferably 0.1%-0.3%；Dispersant concentration is 0.4%-
2.0%, preferably 0.5%-1.6%；Thickener concentration 0.2%-0.6%, preferably 0.2%-0.4%；Remaining is water.
4. the composite mineral gel closure system of claim 1 or 2, it is characterised in that the dispersant is sodium metasilicate, potassium silicate
With one kind in lithium metasilicate or its mixture.
5. the composite mineral gel closure system of claim 1, it is characterised in that the thickener is polyacrylamide and crosslinking
Agent is according to weight than 1：0.6-1.5, preferably 1：The solid content of 0.8-1.2 mixture, wherein polyacrylamide is 88%-
95%, molecular weight is 15,000,000
25000000.
6. the composite mineral gel closure system of claim 1 or 2, it is characterised in that the water is non-mineralized water or mineralized water.
7. the composite mineral gel closure system of claim 6, it is characterised in that the water is mineralized water, such as mineralized water is
5000mg/L-10000mg/L oilfield injection water；Pretreating agent is wherein added in mineralized water, pretreating agent concentration exists
0.05%-0.3%, preferably 0.1-0.2%, 100% gross weight meter based on composite mineral gel closure system.
8. the composite mineral gel closure system of claim 7, it is characterised in that the pretreating agent is sodium carbonate, hydroxide
One kind or its mixture in sodium, sodium acid carbonate.
9. the preparation method of the composite mineral gel closure system as described in claim any one of 1-8, it is comprised the steps of：
(1) add water in beaker, be optionally added into pretreating agent；Such as 550r/min-800r/ afterwards, under agitation,
Min, complex mineral is added, stirred；
(2) stabilizer, dispersant, thickener are added in the beaker of step (1) successively while stirring, lasting stirring, such as stirred
Speed is mixed to stir 2-3h under 200r/min-350r/min, is got a uniform mixture；
(3) heat, such as at 40 DEG C -130 DEG C, reacted the mixed solution in step (2), for example, 20 hours with
On, the composite mineral gel of generation solidification shape.
10. preparation method according to claim 9, it is characterised in that the water of step (1) is mineralized water, wherein adding pretreatment
Agent, the pretreating agent are sodium carbonate, sodium hydroxide, one kind in sodium acid carbonate or its mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711009715.3A CN107699218A (en) | 2017-10-25 | 2017-10-25 | Composite mineral gel closure system and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009715.3A CN107699218A (en) | 2017-10-25 | 2017-10-25 | Composite mineral gel closure system and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108504341A (en) * | 2018-04-17 | 2018-09-07 | 中国海洋石油集团有限公司 | A kind of gelation coating particles profile control agent and its online preparation method and use method |
| CN111944499A (en) * | 2019-05-17 | 2020-11-17 | 中石化石油工程技术服务有限公司 | Micro-crosslinked emulsion wall-fixing agent based on lithium silicate and ultrafine particles and preparation method thereof |
| CN115725281A (en) * | 2021-08-30 | 2023-03-03 | 中国石油化工股份有限公司 | Lignin-based high-temperature channeling sealing system and preparation method and application thereof |
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| CN106634908A (en) * | 2016-10-09 | 2017-05-10 | 中国石油化工股份有限公司 | Heat-resisting interpenetrating polymer network plural gel profile control agent and preparation method thereof |
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| US20110024115A1 (en) * | 2009-07-31 | 2011-02-03 | Brice Bradley W | Method to Control Driving Fluid Breakthrough During Production of Hydrocarbons from a Subterranean Reservoir |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108504341A (en) * | 2018-04-17 | 2018-09-07 | 中国海洋石油集团有限公司 | A kind of gelation coating particles profile control agent and its online preparation method and use method |
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| CN111944499A (en) * | 2019-05-17 | 2020-11-17 | 中石化石油工程技术服务有限公司 | Micro-crosslinked emulsion wall-fixing agent based on lithium silicate and ultrafine particles and preparation method thereof |
| CN111944499B (en) * | 2019-05-17 | 2022-07-12 | 中石化石油工程技术服务有限公司 | Micro-crosslinked emulsion wall-fixing agent based on lithium silicate and ultrafine particles and preparation method thereof |
| CN115725281A (en) * | 2021-08-30 | 2023-03-03 | 中国石油化工股份有限公司 | Lignin-based high-temperature channeling sealing system and preparation method and application thereof |
| CN115725281B (en) * | 2021-08-30 | 2024-02-13 | 中国石油化工股份有限公司 | Lignin-based Gao Wenfeng channeling system and preparation method and application thereof |
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Application publication date: 20180216 |