CN106380539A - Preparation method for online generation of composite gel plugging agent from silica gel-polyacrylamide - Google Patents
Preparation method for online generation of composite gel plugging agent from silica gel-polyacrylamide Download PDFInfo
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- 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
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- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/52—Amides or imides
- C08F120/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
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- 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
- C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
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Abstract
A preparation method for online generation of composite gel plugging agent from silica gel-polyacrylamide comprises the following steps: dissolving water glass in water in a reaction container, adding an acrylamide product into a reaction container under stirring, adding a peracid solution and a stabilizer into the reaction container, uniformly stirring above materials to obtain a silica gel-polyacrylamide composite gel precursor, and allowing the silica gel-polyacrylamide composite gel precursor to stand at 40-100 DEG C for 2 h or above in order to obtain the composite gel plugging agent from silica gel-polyacrylamide. The acrylamide product used as a polyacrylamide precursor almost forms zero viscosity when mixed with the water glass, and can be conveniently injected to the stratum when in use, the peracid decomposes at a high temperature to generate free radicals and acidic components, the free radicals initiate polymerization of the polyacrylamide product to generate a polyacrylamide polymer in order to form viscosity, and the acidic components make parts of the water glass form silicic acid gel in order to finally form the silica gel-polyacrylamide composite gel. The production method has the advantages of low cost and simplicity in operation.
Description
Technical field
The present invention relates to Organic-inorganic composite gel technique field is and in particular to a kind of silica gel-polyacrylamide is given birth to online
Become the preparation method of pluralgel water shutoff agent.
Background technology
Late period of oil field well water problem generally existing, not only have impact on oil recovery efficiency and oil quality, and
And cause huge economic losses, need to carry out profile control and water plugging, especially with the oil field of waterflooding extraction commingling production mode, water blockoff
Operation was particularly important in the later stage of recovering the oil.Administering the more effective method of well water is that chemical plugging agent is injected oil well and note
The water exit interval of well, reduces the water phase permeability of Thief zone water exit interval, has effectively blocked Thief zone, can force injection water
Less permeable layer in entrance, improves its sweep efficiency, improves reservoir recovery.More and more frequent with water-blocking operation, blocking agent
Consumption constantly increases.At present oil field with relatively broad be polymer organic water plugging profile control agent, because its price is higher, increased
Water-blocking operation cost, and there is no the feature of environmental protection.By contrast, silicic acid gel blocking agent have cheap, closure efficiency high with
And the advantages of good temperature resistance, salt resistance, the non-selective water shutoff agent as oil well and the near wellbore zone profile control agent of well are extensive
It is applied in oil development.But it is short to there is also gel time, the shortcomings of the hard brittleness of colloid is easily broken greatly, this all affects water blockoff
Efficiency.
Content of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of silica gel-polyacrylamide exists
Line generates the preparation method of pluralgel water shutoff agent, and this water shutoff agent improves its toughness and gel-forming property, strengthens the effect of water blockoff.
In order to achieve the above object, the technical solution used in the present invention is：
A kind of silica gel-polyacrylamide generates the preparation method of pluralgel water shutoff agent online, comprises the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 5-20 times of quality water under room temperature, and described waterglass is technical grade
And its above purity modulus is not more than 2 waterglass, described water is salinity no more than 4 × 104/mg·L-1Tap water, river
Water, well water, oil produced water and its mixed liquor；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:The acrylic amide product of 5-100, stirs
Mix uniformly, described acrylic amide product is the acrylamide of technical grade and its above purity, sodium acrylate, potassium acrylate, third
Olefin(e) acid ammonium or combinations thereof；
3rd step, adds mass fraction to account for the mass fraction sum of waterglass and acrylic amide product in reaction vessel
The peracid solutions of 0.1-3% and the stabilizer of 0.05-0.5%, stir before obtaining silica gel-polyacrylamide composite gel
Body, described peracid solutions are technical grade and its above purity perbenzoic acid, peracetic acid, Perpropionic Acid or combinations thereof,
Described stabilizer is technical grade and its above purity dodecyl sodium sulfate, sodium lauryl sulphate, dodecylbenzene sodium sulfonate,
Sodium heavy alkyl benzene sulfonate, petroleum sulfonate and its complex；
4th step, by silica gel-polyacrylamide composite gel precursor at 40-100 DEG C, stand more than 2 hours, that is, obtain silica gel-
Polyacrylamide composite gel water shutoff agent.
Beneficial effects of the present invention are：This gel due to employ acrylic amide product as polyacrylamide before
Body, is hardly formed viscosity with waterglass when mixing, be easy to inject stratum during use.And ought peracid decomposition one at relatively high temperatures
The polymerization that aspect produces free radical acrylamide triggered class product generates polyacrylamide product, forms viscosity, on the other hand
The acidic components that peracid decomposition produces can make part waterglass form silicic acid gel, thus ultimately forming silica gel-polyacrylamide
Amine pluralgel.Raw material has low cost, easy and simple to handle, and water used is low to prescription, can be nearby using water source in application.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of silica gel-polyacrylamide generates the preparation method of pluralgel water shutoff agent online, comprises the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 10 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1.2 waterglass, and described water salinity is 2 × 102/mg·L-1River；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:10 acrylic amide product, stirring
Uniformly, described acrylic amide product is 5 for mass ratio:The acrylamide of 1 technical grade purity and sodium acrylate；
3rd step, adds mass fraction to account for the mass fraction sum of waterglass and acrylic amide product in reaction vessel
0.1% peracid solutions and 0.05% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described
Peracid solutions are technical grade purity peracetic acid, and described stabilizer is technical grade dodecyl sodium sulfate；
4th step, silica gel-polyacrylamide composite gel precursor is stood 8 hours at 60 DEG C, that is, obtains silica gel-polyacrylamide
Pluralgel water shutoff agent.
The having the beneficial effect that of the present embodiment：This gel due to employ acrylic amide product as polyacrylamide before
Body, is hardly formed viscosity with waterglass when mixing, be easy to inject stratum during use.And ought peracid decomposition one at relatively high temperatures
The polymerization that aspect produces free radical acrylamide triggered class product generates polyacrylamide product, forms viscosity, on the other hand
The acidic components that peracid decomposition produces can make part waterglass form silicic acid gel, thus ultimately forming silica gel-polyacrylamide
Amine pluralgel.Raw material has low cost, easy and simple to handle, and water used is low to prescription, can be nearby using water source in application.
Embodiment 2
A kind of silica gel-polyacrylamide generates the preparation method of pluralgel water shutoff agent online, comprises the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 20 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1 waterglass, and described water salinity is 1 × 102/mg·L-1River；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:5 acrylic amide product, stirring is all
Even, described acrylic amide product is the acrylamide of technical grade purity；
3rd step, adds mass fraction to account for the mass fraction sum of waterglass and acrylic amide product in reaction vessel
0.2% peracid solutions and 0.05% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described
Peracid solutions are technical grade purity perbenzoic acid, and described stabilizer is technical grade sodium lauryl sulphate；
4th step, silica gel-polyacrylamide composite gel precursor is stood 10 hours at 40 DEG C, that is, obtains silica gel-polyacrylamide
Amine pluralgel water shutoff agent.
The having the beneficial effect that of the present embodiment：This gel due to employ acrylic amide product as polyacrylamide before
Body, is hardly formed viscosity with waterglass when mixing, be easy to inject stratum during use.And ought peracid decomposition one at relatively high temperatures
The polymerization that aspect produces free radical acrylamide triggered class product generates polyacrylamide product, forms viscosity, on the other hand
The acidic components that peracid decomposition produces can make part waterglass form silicic acid gel, thus ultimately forming silica gel-polyacrylamide
Amine pluralgel.Raw material has low cost, easy and simple to handle, and water used is low to prescription, can be nearby using water source in application.
Embodiment 3
A kind of silica gel-polyacrylamide generates the preparation method of pluralgel water shutoff agent online, comprises the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 15 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1.5 waterglass, and described water salinity is 5 × 102/mg·L-1Oil field extracted water；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:15 acrylic amide product, stirring
Uniformly, described acrylic amide product is 8 for mass ratio:The acrylamide of 1 technical grade purity and potassium acrylate；
3rd step, adds mass fraction to account for the mass fraction sum of waterglass and acrylic amide product in reaction vessel
0.3% peracid solutions and 0.05% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described
Peracid solutions are technical grade purity Perpropionic Acid, and described stabilizer is chemical pure dodecylbenzene sodium sulfonate；
4th step, silica gel-polyacrylamide composite gel precursor is stood 6 hours at 50 DEG C, that is, obtains silica gel-polyacrylamide
Pluralgel water shutoff agent.
The having the beneficial effect that of the present embodiment：This gel due to employ acrylic amide product as polyacrylamide before
Body, is hardly formed viscosity with waterglass when mixing, be easy to inject stratum during use.And ought peracid decomposition one at relatively high temperatures
The polymerization that aspect produces free radical acrylamide triggered class product generates polyacrylamide product, forms viscosity, on the other hand
The acidic components that peracid decomposition produces can make part waterglass form silicic acid gel, thus ultimately forming silica gel-polyacrylamide
Amine pluralgel.Raw material has low cost, easy and simple to handle, and water used is low to prescription, can be nearby using water source in application.
Embodiment 4
A kind of silica gel-polyacrylamide generates the preparation method of pluralgel water shutoff agent online, comprises the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 15 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1.6 waterglass, and described water salinity is 0.5 × 102/mg·L-1Tap water；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:5 acrylic amide product, stirring is all
Even, described acrylic amide product is the acrylamide of technical grade purity；
3rd step, adds mass fraction to account for the 1 of the mass fraction sum of waterglass and acrylic amide product in reaction vessel
The peracid solutions of % and 0.1% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described peracid
Solution is technical grade purity perbenzoic acid, and described stabilizer is 1 for mass ratio:1 technical grade sodium heavy alkyl benzene sulfonate and
Petroleum sulfonate；
4th step, silica gel-polyacrylamide composite gel precursor is stood more than 2 hours at 80 DEG C, that is, obtains silica gel-polypropylene
Amide pluralgel water shutoff agent.
The having the beneficial effect that of the present embodiment：This gel due to employ acrylic amide product as polyacrylamide before
Body, is hardly formed viscosity with waterglass when mixing, be easy to inject stratum during use.And ought peracid decomposition one at relatively high temperatures
The polymerization that aspect produces free radical acrylamide triggered class product generates polyacrylamide product, forms viscosity, on the other hand
The acidic components that peracid decomposition produces can make part waterglass form silicic acid gel, thus ultimately forming silica gel-polyacrylamide
Amine pluralgel.Raw material has low cost, easy and simple to handle, and water used is low to prescription, can be nearby using water source in application.
Embodiment 5
A kind of silica gel-polyacrylamide generates the preparation method of pluralgel water shutoff agent online, comprises the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 18 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 2 waterglass, and described water salinity is 3 × 102/mg·L-1Well water；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:5 acrylic amide product, stirring is all
Even, described acrylic amide product is 10 for mass ratio:The acrylamide of 1 technical grade purity and ammonium acrylate；
3rd step, adds mass fraction to account for the 2% of the mass fraction sum of waterglass and acrylic amide product in reaction vessel
Peracid solutions and 0.4% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described peracid
Solution is technical grade purity perbenzoic acid, and described stabilizer is technical grade petroleum sulfonate；
4th step, silica gel-polyacrylamide composite gel precursor is stood more than 8 hours at 40 DEG C, that is, obtains silica gel-polypropylene
Amide pluralgel water shutoff agent.
The having the beneficial effect that of the present embodiment：This gel due to employ acrylic amide product as polyacrylamide before
Body, is hardly formed viscosity with waterglass when mixing, be easy to inject stratum during use.And ought peracid decomposition one at relatively high temperatures
The polymerization that aspect produces free radical acrylamide triggered class product generates polyacrylamide product, forms viscosity, on the other hand
The acidic components that peracid decomposition produces can make part waterglass form silicic acid gel, thus ultimately forming silica gel-polyacrylamide
Amine pluralgel.Raw material has low cost, easy and simple to handle, and water used is low to prescription, can be nearby using water source in application.
Embodiment 6
A kind of silica gel-polyacrylamide generates the preparation method of pluralgel water shutoff agent online, comprises the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 10 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1.9 waterglass, and described water salinity is 5 × 101/mg·L-1Tap water；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:16 acrylic amide product, stirring
Uniformly, described acrylic amide product is 10 for mass ratio:The acrylamide of 1 technical grade purity and potassium acrylate；
3rd step, adds mass fraction to account for the 3% of the mass fraction sum of waterglass and acrylic amide product in reaction vessel
Peracid solutions and 0.5% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described peracid
Solution is technical grade purity perbenzoic acid, and described stabilizer is to analyze pure dodecyl sodium sulfate；
4th step, silica gel-polyacrylamide composite gel precursor is stood more than 5 hours at 65 DEG C, that is, obtains silica gel-polypropylene
Amide pluralgel water shutoff agent.
The having the beneficial effect that of the present embodiment：This gel due to employ acrylic amide product as polyacrylamide before
Body, is hardly formed viscosity with waterglass when mixing, be easy to inject stratum during use.And ought peracid decomposition one at relatively high temperatures
The polymerization that aspect produces free radical acrylamide triggered class product generates polyacrylamide product, forms viscosity, on the other hand
The acidic components that peracid decomposition produces can make part waterglass form silicic acid gel, thus ultimately forming silica gel-polyacrylamide
Amine pluralgel.Raw material has low cost, easy and simple to handle, and water used is low to prescription, can be nearby using water source in application.
Claims (7)
1. a kind of silica gel-polyacrylamide generates the preparation method of pluralgel water shutoff agent online it is characterised in that including following
Step：
The first step, in reaction vessel, waterglass is dissolved in its 5-20 times of quality water under room temperature, and described waterglass is technical grade
And its above purity modulus is not more than 2 waterglass, described water is salinity no more than 4 × 104/mg·L-1Tap water, river
Water, well water, oil produced water and its mixed liquor；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:The acrylic amide product of 5-100, stirs
Mix uniformly, described acrylic amide product is the acrylamide of technical grade and its above purity, sodium acrylate, potassium acrylate, third
Olefin(e) acid ammonium or combinations thereof；
3rd step, adds mass fraction to account for the mass fraction sum of waterglass and acrylic amide product in reaction vessel
The peracid solutions of 0.1-3% and the stabilizer of 0.05-0.5%, stir before obtaining silica gel-polyacrylamide composite gel
Body, described peracid solutions are technical grade and its above purity perbenzoic acid, peracetic acid, Perpropionic Acid or combinations thereof,
Described stabilizer is technical grade and its above purity dodecyl sodium sulfate, sodium lauryl sulphate, dodecylbenzene sodium sulfonate,
Sodium heavy alkyl benzene sulfonate, petroleum sulfonate and its complex；
4th step, by silica gel-polyacrylamide composite gel precursor at 40-100 DEG C, stand more than 2 hours, that is, obtain silica gel-
Polyacrylamide composite gel water shutoff agent.
2. a kind of silica gel-polyacrylamide according to claim 1 generates the preparation side of pluralgel water shutoff agent online
Method is it is characterised in that comprise the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 10 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1.2 waterglass, and described water salinity is 2 × 102/mg·L-1River；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:10 acrylic amide product, stirring
Uniformly, described acrylic amide product is 5 for mass ratio:The acrylamide of 1 technical grade purity and sodium acrylate；
3rd step, adds mass fraction to account for the mass fraction sum of waterglass and acrylic amide product in reaction vessel
0.1% peracid solutions and 0.05% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described
Peracid solutions are technical grade purity peracetic acid, and described stabilizer is technical grade dodecyl sodium sulfate；
4th step, silica gel-polyacrylamide composite gel precursor is stood 8 hours at 60 DEG C, that is, obtains silica gel-polyacrylamide
Pluralgel water shutoff agent.
3. a kind of silica gel-polyacrylamide according to claim 1 generates the preparation side of pluralgel water shutoff agent online
Method is it is characterised in that comprise the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 20 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1 waterglass, and described water salinity is 1 × 102/mg·L-1River；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:5 acrylic amide product, stirring is all
Even, described acrylic amide product is the acrylamide of technical grade purity；
3rd step, adds mass fraction to account for the mass fraction sum of waterglass and acrylic amide product in reaction vessel
0.2% peracid solutions and 0.05% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described
Peracid solutions are technical grade purity perbenzoic acid, and described stabilizer is technical grade sodium lauryl sulphate；
4th step, silica gel-polyacrylamide composite gel precursor is stood 10 hours at 40 DEG C, that is, obtains silica gel-polyacrylamide
Amine pluralgel water shutoff agent.
4. a kind of silica gel-polyacrylamide according to claim 1 generates the preparation side of pluralgel water shutoff agent online
Method is it is characterised in that comprise the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 15 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1.5 waterglass, and described water salinity is 5 × 102/mg·L-1Oil field extracted water；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:15 acrylic amide product, stirring
Uniformly, described acrylic amide product is 8 for mass ratio:The acrylamide of 1 technical grade purity and potassium acrylate；
3rd step, adds mass fraction to account for the mass fraction sum of waterglass and acrylic amide product in reaction vessel
0.3% peracid solutions and 0.05% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described
Peracid solutions are technical grade purity Perpropionic Acid, and described stabilizer is chemical pure dodecylbenzene sodium sulfonate；
4th step, silica gel-polyacrylamide composite gel precursor is stood 6 hours at 50 DEG C, that is, obtains silica gel-polyacrylamide
Pluralgel water shutoff agent.
5. a kind of silica gel-polyacrylamide according to claim 1 generates the preparation side of pluralgel water shutoff agent online
Method is it is characterised in that comprise the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 15 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1.6 waterglass, and described water salinity is 0.5 × 102/mg·L-1Tap water；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:5 acrylic amide product, stirring is all
Even, described acrylic amide product is the acrylamide of technical grade purity；
3rd step, adds mass fraction to account for the 1 of the mass fraction sum of waterglass and acrylic amide product in reaction vessel
The peracid solutions of % and 0.1% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described peracid
Solution is technical grade purity perbenzoic acid, and described stabilizer is 1 for mass ratio:1 technical grade sodium heavy alkyl benzene sulfonate and
Petroleum sulfonate；
4th step, silica gel-polyacrylamide composite gel precursor is stood more than 2 hours at 80 DEG C, that is, obtains silica gel-polypropylene
Amide pluralgel water shutoff agent.
6. a kind of silica gel-polyacrylamide according to claim 1 generates the preparation side of pluralgel water shutoff agent online
Method is it is characterised in that comprise the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 18 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 2 waterglass, and described water salinity is 3 × 102/mg·L-1River；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:5 acrylic amide product, stirring is all
Even, described acrylic amide product is 10 for mass ratio:The acrylamide of 1 technical grade purity and ammonium acrylate；
3rd step, adds mass fraction to account for the 2% of the mass fraction sum of waterglass and acrylic amide product in reaction vessel
Peracid solutions and 0.4% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described peracid
Solution is technical grade purity perbenzoic acid, and described stabilizer is technical grade petroleum sulfonate；
4th step, silica gel-polyacrylamide composite gel precursor is stood more than 8 hours at 40 DEG C, that is, obtains silica gel-polypropylene
Amide pluralgel water shutoff agent.
7. a kind of silica gel-polyacrylamide according to claim 1 generates the preparation side of pluralgel water shutoff agent online
Method is it is characterised in that comprise the following steps：
The first step, in reaction vessel, waterglass is dissolved in its 10 times of quality water under room temperature, and described waterglass is that technical grade is pure
Degree modulus is 1.9 waterglass, and described water salinity is 5 × 101/mg·L-1Tap water；
Second step, adds the ratio with waterglass quality to be 1 in stirring downhill reaction container:16 acrylic amide product, stirring
Uniformly, described acrylic amide product is 10 for mass ratio:The acrylamide of 1 technical grade purity and potassium acrylate；
3rd step, adds mass fraction to account for the 3% of the mass fraction sum of waterglass and acrylic amide product in reaction vessel
Peracid solutions and 0.5% stabilizer, stir and obtain silica gel-polyacrylamide composite gel precursor, described peracid
Solution is technical grade purity perbenzoic acid, and described stabilizer is to analyze pure dodecyl sodium sulfate；
4th step, silica gel-polyacrylamide composite gel precursor is stood more than 5 hours at 65 DEG C, that is, obtains silica gel-polypropylene
Amide pluralgel water shutoff agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610801798.9A CN106380539A (en) | 2016-09-05 | 2016-09-05 | Preparation method for online generation of composite gel plugging agent from silica gel-polyacrylamide |
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| CN201610801798.9A CN106380539A (en) | 2016-09-05 | 2016-09-05 | Preparation method for online generation of composite gel plugging agent from silica gel-polyacrylamide |
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| CN (1) | CN106380539A (en) |
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| CN110156940A (en) * | 2019-06-05 | 2019-08-23 | 江西富诚生态环境科技集团有限公司 | A kind of diverting agent polymer and synthesis technology |
| CN109942739B (en) * | 2019-03-22 | 2022-04-15 | 北京市政建设集团有限责任公司 | Water glass-acrylate composite gel water shutoff agent and preparation method thereof |
| CN115960599A (en) * | 2021-10-11 | 2023-04-14 | 中国石油天然气股份有限公司 | Inorganic microgel-polymer composite gel system and preparation method and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109942739B (en) * | 2019-03-22 | 2022-04-15 | 北京市政建设集团有限责任公司 | Water glass-acrylate composite gel water shutoff agent and preparation method thereof |
| CN110156940A (en) * | 2019-06-05 | 2019-08-23 | 江西富诚生态环境科技集团有限公司 | A kind of diverting agent polymer and synthesis technology |
| CN115960599A (en) * | 2021-10-11 | 2023-04-14 | 中国石油天然气股份有限公司 | Inorganic microgel-polymer composite gel system and preparation method and application thereof |
| CN115960599B (en) * | 2021-10-11 | 2024-04-09 | 中国石油天然气股份有限公司 | Inorganic microgel-polymer composite gel system and preparation method and application thereof |
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Application publication date: 20170208 |