CN109384889A - Polymer and its preparation method and application with selective water plugging function - Google Patents
Polymer and its preparation method and application with selective water plugging function Download PDFInfo
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Abstract
The present invention relates to the research fields of oil field profile control and water plugging material and promotion High Water Cut Reservoir oil well productivity, disclose a kind of polymer with selective water plugging function, the polymer is in initiator, chain-transferring agent, crosslinking agent and in the presence of as the water of solvent, make the emulsion polymerization containing monomer A, monomer B, oil-soluble resin and emulsifier and is made, wherein, monomer A is acrylamide；Monomer B is sulfonic acid monomer, and the sulfonic acid monomer is 2- acrylamide-2-methylpro panesulfonic acid；Oil-soluble resin is one of rosin resin, gum dammar, oil-soluble phenolic resin, Petropols, terpene resin and coumarone indene resin or a variety of；The emulsifier includes primary emulsion and/or assistant for emulsifying agent.Polymer prepared by the present invention has the effect of excellent selective water plugging without stifled oily, and resistance to erosion multiple with higher.
Description
Technical field
The present invention relates to the research fields of oil field profile control and water plugging material and promotion High Water Cut Reservoir oil well productivity, specifically
Ground is related to a kind of polymer with selective water plugging function, a kind of side for preparing the polymer with selective water plugging function
Method and the polymer with selective water plugging function being prepared by this method, the polymer with selective water plugging function
The alternatively application of property water shutoff agent.
Background technique
Oilwell water shutoff technique is to optimize a key technique of oil gas field waterflooding extraction achievement.Water layer and oil in stratum
Layer is interweaved together, and heterogeneity is serious, and existing construction technology is difficult for two kinds of reservoirs to be effectively isolated, but oily
Field enterprise is stabilized crude (oil) yield, the composite water cut of oil well is also reduced as far as possible, for this to highly selective with oil/water
Water shutoff agent more stringent requirements are proposed.The water blockoffs systems such as existing water base, oil base, polymer gel, although having centainly
Selectivity, but not only water blockoff was again stifled oily, indoor logistics organizations the result shows that, the oil plugging rate of existing water shutoff agent is all larger than 35%, and
And the temperature-resistant anti-salt performance of system is also poor, the extent of spreading amd application is smaller.Although water-soluble polymer water shutoff agent can select excellent
It is introduced into the higher stratum of water saturation, but the water-soluble polymer water shutoff agent that part is had in the migration of stratum enters
Into oil reservoir, since such water shutoff agent itself is without the ability of voluntarily de-plugging, it is very difficult for discharging it.Oil based cement is stifled
Although aqua also can largely improve oil recovery factor, there is also very big drawbacks, and what it was generally blocked is aqueous
The higher stratum of saturation degree, when oil based cement water shutoff agent is flowed into the stratum of oil mixing with water, even if only being mixed very in oil reservoir
At least part of water flooding, can also react with water flooding makes to the cement solidifies, this illustrates the water blockoff of oil based cement water shutoff agent
There are also be significantly short of selection performance.Polymer gel class water shutoff agent is by means of the lower effectively movably change of volume of grease effect
Change, makes Oil/water Phase Permeability that non-uniform reduction occur, but the processing mode will cause the closure of fluid swivels physics, cause porous
The decline of medium percolation ability, oil well produce oil productive capacity while water is greatly lowered and also reduce, deal with improperly and will cause Liquid output
It is too low, make the crude oil underproduction.
Currently, selective water shutoff agent and Novel technique of in-depth profile control become better and approaching perfection day by day both at home and abroad, in grinding for selective water plugging material
Studying carefully exploitation, construction technology etc. has technically had tremendous development, but as oil field development, oil-layer characteristic and environment are constantly sent out
Changing keeps the contradiction of oil reservoir development more prominent, according to selectivity using water shutoff material for a long time particularly to development late stage
The characteristic of water shutoff material summarizes the experience of oil field actual development, proposes the technology that current selective water shutoff agent must overcome at present
Problem, to research and develop new technology targetedly to adapt to special oil field and improve the water plugging effect of selective system.
In conclusion selective water-plugging used in oilwell water shutoff is mostly by water such as polyacrylamide and its derivatives at present
Soluble polymer generates gel in stratum or frozen glue blocks water flooding, or meets water plastic or solidification envelope with oil base blocking agent
Water blockoff alters channel, but due to its poor selectivity, also will be greatly reduced oleic permeability while water blockoff, causes stifled rear low
Liquid constrains the application of water shutoff in oil well.
Therefore, a kind of novel highly selective water shutoff material is developed, the not stifled oil of the water blockoff of oil reservoir is realized, ultra-high water cut stage is mentioned
High oil well productivity has great importance.
Summary of the invention
The purpose of the invention is to overcome the deficiencies of existing technologies, a kind of polymerization with selective water plugging function is provided
Object and its preparation method and application, that is, a certain amount of acrylamide monomers, sulfonic acid monomer, oil-soluble are added in aqueous solution
Resin particle and emulsifier form stable emulsion system after stirring, initiator, chain-transferring agent and crosslinking agent, polymerization is added
The polymeric colloid of network structure embeding resin particle is obtained afterwards, and colloid obtains a kind of powder-type after granulation, drying and crushing
Water shutoff material.It is provided by the invention that there is highly selective water shutoff material can be matched according to Oil Field demand using live water
The water shutoff agent of different quality concentration is made, water shutoff agent is through injecting in reservoir formation, into after aqueous layer, oil-soluble particle therein
Duct can be carried out effectively blocking and then reducing water phase permeability, increase water phase plugging action；Into after oily phase layer, oil therein
Soluble particles are dissolved in crude oil without influencing oleic permeability, to achieve the effect that selective water plugging without stifled oil.
To achieve the goals above, first aspect present invention provides a kind of polymer with selective water plugging function,
Wherein, which is to make in initiator, chain-transferring agent, crosslinking agent and in the presence of as the water of solvent containing monomer A, list
Body B, oil-soluble resin and emulsifier emulsion polymerization and be made, wherein the monomer A be acrylamide；The monomer B
For sulfonic acid monomer, and the sulfonic acid monomer is 2- acrylamide-2-methylpro panesulfonic acid；The oil-soluble resin is rosin tree
One of rouge, gum dammar, oil-soluble phenolic resin, Petropols, terpene resin and coumarone indene resin are a variety of；The cream
Agent includes primary emulsion and/or assistant for emulsifying agent.
Preferably, on the basis of the water of 100 parts by weight, the dosage of the monomer A is 0.9-20 parts by weight, the monomer B
Dosage be 0.1-5 parts by weight, the dosage of the oil-soluble resin is 20-40 parts by weight, and the dosage of the primary emulsion is
4.5-9.5 parts by weight, the dosage of the assistant for emulsifying agent are 0.5-5.5 parts by weight；
Preferably, on the basis of the water of 100 parts by weight, the dosage of the monomer A is 9-20 parts by weight, the monomer B's
Dosage is 1-5 parts by weight, and the dosage of the oil-soluble resin is 30-40 parts by weight, and the dosage of the primary emulsion is 5-7 weight
Part, the dosage of the assistant for emulsifying agent is 2-5 parts by weight；
Preferably, the resistance to erosion multiple of the polymer is greater than 50PV.
Preferably, the primary emulsion is selected from dodecyl sodium sulfate, lauryl sodium sulfate and dodecyl benzene sulfonic acid
One of sodium is a variety of；Preferably, the primary emulsion is selected from dodecyl sodium sulfate and/or neopelex；
The assistant for emulsifying agent is selected from Span 20, Span 40, Span 60, Span 80, polysorbas20, polysorbate40, polysorbate60 and spits
One of temperature 80 is a variety of；Preferably, the assistant for emulsifying agent is selected from one of Span 20, Span 60 and Tween 80 or more
Kind.
Preferably, the initiator is water soluble starter, and the water soluble starter is persulfate-sulphite
Oxidation-reduction trigger system；The chain-transferring agent is tetramethylethylenediamine aqueous solution；The crosslinking agent is N, N- di-2-ethylhexylphosphine oxide third
Acrylamide；
Preferably, on the basis of total dosage of the monomer A and the monomer B, the dosage of the persulfate is 0.01-
0.1 weight %, the dosage of the sulphite are 0.005-0.05 weight %；And the dosage of the chain-transferring agent is 0.01-
0.1 weight %；The dosage of the crosslinking agent is 0.01-0.1 weight %.
Second aspect of the present invention provides a kind of preparation method of polymer with selective water plugging function, wherein should
Preparation method the following steps are included:
(1) monomer A, monomer B and water are mixed, forms aqueous solution；
(2) oil-soluble resin, emulsifier are mixed with the aqueous solution, forms lotion；
(3) lotion is subjected to polymerization reaction in the presence of initiator, chain-transferring agent and crosslinking agent；
Wherein, the monomer A is acrylamide；The monomer B is sulfonic acid monomer, and the sulfonic acid monomer is 2- acryloyl
Amido -2- methyl propane sulfonic acid；The oil-soluble resin be rosin resin, gum dammar, oil-soluble phenolic resin, Petropols,
One of terpene resin and coumarone indene resin are a variety of；The emulsifier is primary emulsion and/or assistant for emulsifying agent.
In the present invention, there is no particular limitation in source of the present invention to the oil-soluble resin, for example, can be by normal
The commercially available means of rule obtain.In situations where it is preferred, in order to which the purpose of selective water plugging, the oil-soluble resin is better achieved
Partial size be 3-100 μm, preferably 3-50 μm.
Preferably, on the basis of the water of 100 parts by weight, the dosage of the monomer A is 0.9-20 parts by weight, the monomer B
Dosage be 0.1-5 parts by weight, the dosage of the oil-soluble resin is 20-40 parts by weight, and the dosage of the primary emulsion is
4.5-9.5 parts by weight, the dosage of the assistant for emulsifying agent are 0.5-5.5 parts by weight；
Preferably, on the basis of the water of 100 parts by weight, the dosage of the monomer A is 9-20 parts by weight, the monomer B's
Dosage is 1-5 parts by weight, and the dosage of the oil-soluble resin is 30-40 parts by weight, and the dosage of the primary emulsion is 5-7 weight
Part, the dosage of the assistant for emulsifying agent is 2-5 parts by weight；
Preferably, the resistance to erosion multiple for the polymer being prepared is greater than 50PV.
Preferably, the primary emulsion is selected from dodecyl sodium sulfate, lauryl sodium sulfate and dodecyl benzene sulfonic acid
One of sodium is a variety of；Preferably, the primary emulsion is selected from dodecyl sodium sulfate and/or neopelex；
The assistant for emulsifying agent is selected from Span 20, Span 40, Span 60, Span 80, polysorbas20, polysorbate40, polysorbate60 and spits
One of temperature 80 is a variety of；Preferably, the assistant for emulsifying agent is selected from one of Span 20, Span 60 and Tween 80 or more
Kind.
Preferably, the initiator is water soluble starter, and the water soluble starter is persulfate-sulphite
Oxidation-reduction trigger system；The chain-transferring agent is tetramethylethylenediamine aqueous solution；The crosslinking agent is N, N- di-2-ethylhexylphosphine oxide third
Acrylamide.
Preferably, on the basis of total dosage of the monomer A and the monomer B, the dosage of the persulfate is 0.01-
0.1 weight %, the dosage of the sulphite are 0.005-0.05 weight %；And
The dosage of the chain-transferring agent is 0.01-0.1 weight %；The dosage of the crosslinking agent is 0.01-0.1 weight %.
Preferably, in step (1), the pH value of the aqueous solution is 6-10；And in step (3), the polymerization is anti-
The condition answered are as follows: temperature is 20-40 DEG C, and preferably 25-35 DEG C, the time is 6-8 hours, preferably 7-8 hours.
Third aspect present invention provides the polymerization with selective water plugging function that method described above is prepared
Object.
Fourth aspect present invention provides the polymer with selective water plugging function described above, and alternatively property is stifled
The application of aqua.
The present invention is polymerize by introducing a kind of oil-soluble polymer beads in the lotion of water base acrylamide copolymer
In the process, under the action of chain-transferring agent, chain tra nsfer can occur to resin particle surfaces, while in the effect of crosslinking agent, being formed
The cross-linked particles of reticular structure, the suspension stability and particles' interaction of reinforced resin particle, exist to improve water shutoff agent
The shut-off capacity of water phase, the water shutoff agent can be smoothly injected into reservoir formation by high-pressure pump.Oil-soluble resin after crosslinking
Grain can considerably increase the temperature-resistant anti-salt performance and scour resistance of water blockoff agent material.In the earth formation, when water shutoff agent is by water layer
The influence of environment temperature and pressure can deform, a large amount of oil-soluble particle water shutoff agents interaction of aggregation, to aqueous full
Effective closure is formed with higher blowhole stratum is spent, and then substantially reduces the water yield of oil well.Part oil-soluble particle is stifled
After aqua is flowed into oil reservoir, due to itself preferable oil-soluble, it just can be added in crude oil, return and drain into together with underground crude oil
Ground achievees the effect that the not stifled oil of water blockoff, is inefficient well under low oil price to significantly improve the oil/water selectivity of water shutoff material
It creates beneficial synergy and behave is provided, improve oil well productivity for ultra-high water cut stage and technical support is provided.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
First aspect present invention provides a kind of polymer with selective water plugging function, wherein the polymer be
Initiator, chain-transferring agent, crosslinking agent and as the water of solvent in the presence of, make containing monomer A, monomer B, oil-soluble resin and cream
The emulsion polymerization of agent and be made, wherein the monomer A be acrylamide；The monomer B is sulfonic acid monomer, and described
Sulfonic acid monomer is 2- acrylamide-2-methylpro panesulfonic acid；The oil-soluble resin is rosin resin, gum dammar, oil-soluble
One of phenolic resin, Petropols, terpene resin and coumarone indene resin are a variety of；The emulsifier includes primary emulsion
And/or assistant for emulsifying agent.
Preferably, the oil-soluble resin can be with one of oil-soluble phenolic resin, Petropols and coumarone indene resin
Or it is a variety of.
In the present invention, the monomer A, the monomer B, the oil-soluble resin can be commercially available or use
The method of the prior art synthesizes to obtain.For example, the monomer A, the monomer B, described that the embodiment of the present invention part uses
Oil-soluble resin is all from commercially available.
According to the present invention, on the basis of the water of 100 parts by weight, the dosage of the monomer A is 0.9-20 parts by weight, the list
The dosage of body B is 0.1-5 parts by weight, and the dosage of the oil-soluble resin is 20-40 parts by weight, and the dosage of the primary emulsion is
4.5-9.5 parts by weight, the dosage of the assistant for emulsifying agent are 0.5-5.5 parts by weight；In the present invention, the monomer A, the monomer
B, the oil-soluble resin, the specific choice of the primary emulsion and the assistant for emulsifying agent and dosage control above range it
The present invention inside can be completed, it is, however, preferable that the dosage of the monomer A is 9-20 weight on the basis of the water of 100 parts by weight
Part, the dosage of the monomer B is 1-5 parts by weight, and the dosage of the oil-soluble resin is 30-40 parts by weight, the primary emulsion
For 5-7 parts by weight, the dosage of the assistant for emulsifying agent is 2-5 parts by weight.
It is further preferred that total dosage of the monomer A and the monomer B are 10- on the basis of the water of 100 parts by weight
25 weight %.
It is further preferred that the emulsifier is primary emulsion and assistant for emulsifying agent, and on the basis of the water of 100 parts by weight,
Total dosage of the primary emulsion and the assistant for emulsifying agent is 5-10 parts by weight.
Preferably, the resistance to erosion multiple of the polymer is greater than 50PV.
According to the present invention, the primary emulsion can be selected from dodecyl sodium sulfate (SBS), lauryl sodium sulfate
(SDS) and one of neopelex (SDBS) or a variety of；Preferably, the primary emulsion is selected from dodecyl sulphur
One of sour sodium (SBS) and/or neopelex (SDBS) are a variety of.
The assistant for emulsifying agent can be selected from Span 20, Span 40, Span 60, Span 80, polysorbas20, polysorbate40, polysorbate60
With one of Tween 80 or a variety of；Preferably, the assistant for emulsifying agent be selected from one of Span 20, Span 60 and Tween 80 or
It is a variety of.
According to the present invention, the initiator can be water soluble starter, and the water soluble starter can be for by over cure
The oxidation-reduction trigger system of hydrochlorate oxidant and sulfite reducing agent composition.In the preferred case, with the monomer A and
On the basis of total dosage of the monomer B, the dosage of the persulfate is 0.01-0.1 weight %, the dosage of the sulphite
For 0.005-0.05 weight %, that is to say, that the dosage of the persulfate is the 0.01- of total dosage of monomer A and monomer B
0.1 weight %, the dosage of the sulphite are the 0.005-0.05 weight % of total dosage of monomer A and monomer B.For example, institute
The oxidant stated in redox type initiators can be the persulfate aqueous solution of 0.2 weight % and/or the mistake of 0.2 weight %
Ammonium sulfate solution；Reducing agent in the redox type initiators can be the bisulfite aqueous solutions of potassium of 0.1 weight %
And/or 0.1 weight % aqueous solution of sodium bisulfite.
It is further preferred that on the basis of total dosage of the monomer A and the monomer B, the dosage of the persulfate
For 0.01-0.05 weight %, when the dosage of the sulphite is 0.01-0.05 weight %, effect is more preferable.
Preferably, the chain-transferring agent can be the tetramethylethylenediamine aqueous solution of 0.1 weight %；And with the monomer A
On the basis of total dosage of the monomer B, the dosage of the chain-transferring agent is 0.01-0.1 weight %；It is further preferred that with
On the basis of total dosage of the monomer A and the monomer B, when the dosage of the chain-transferring agent is 0.01-0.05 weight %, effect
More preferably.
Preferably, the crosslinking agent is the N of 0.1 weight %, N- methylene-bisacrylamide aqueous solution；And with the monomer
On the basis of total dosage of A and the monomer B, the dosage of the crosslinking agent is 0.01-0.1 weight %；Preferably, with the monomer
On the basis of total dosage of A and the monomer B, the dosage of the crosslinking agent is 0.01-0.05 weight %.
Second aspect of the present invention provides a kind of preparation method of polymer with selective water plugging function, wherein should
Preparation method the following steps are included:
(1) monomer A, monomer B and water are mixed, forms aqueous solution；
(2) oil-soluble resin, emulsifier are mixed with the aqueous solution, forms lotion；
(3) lotion is subjected to polymerization reaction in the presence of initiator, chain-transferring agent and crosslinking agent；
Wherein, the monomer A can be acrylamide；The monomer B can be sulfonic acid monomer, and the sulfonic acid monomer can
Think 2- acrylamide-2-methylpro panesulfonic acid；The oil-soluble resin can be rosin resin, gum dammar, oil-soluble phenol
One of urea formaldehyde, Petropols, terpene resin and coumarone indene resin are a variety of；The emulsifier include primary emulsion and/
Or assistant for emulsifying agent.
Preferably, the oil-soluble resin can be with one of oil-soluble phenolic resin, Petropols and coumarone indene resin
Or it is a variety of.
The polymerization reaction can also carry out in the presence of protective gas, and the protective gas preferably can be nitrogen.
According to the present invention, on the basis of the water of 100 parts by weight, the dosage of the monomer A is 0.9-20 parts by weight, the list
The dosage of body B is 0.1-5 parts by weight, and the dosage of the oil-soluble resin is 20-40 parts by weight, and the dosage of the primary emulsion is
4.5-9.5 parts by weight, the dosage of the assistant for emulsifying agent are 0.5-5.5 parts by weight；Preferably, on the basis of the water of 100 parts by weight,
The dosage of the monomer A is 9-20 parts by weight, and the dosage of the monomer B is 1-5 parts by weight, and the dosage of the oil-soluble resin is
30-40 parts by weight, the dosage of the primary emulsion are 5-7 parts by weight, and the dosage of the assistant for emulsifying agent is 2-5 parts by weight.
It is further preferred that total dosage of the monomer A and the monomer B are 10- on the basis of the water of 100 parts by weight
25 weight %.
It is further preferred that the emulsifier is primary emulsion and assistant for emulsifying agent, and on the basis of the water of 100 parts by weight,
Total dosage of the primary emulsion and the assistant for emulsifying agent is 5-10 parts by weight.
Preferably, the resistance to erosion multiple for the polymer being prepared is greater than 50PV.
According to the present invention, the primary emulsion can be selected from dodecyl sodium sulfate, lauryl sodium sulfate and dodecane
One of base benzene sulfonic acid sodium salt is a variety of；Preferably, the primary emulsion is selected from dodecyl sodium sulfate and/or detergent alkylate
One of sodium sulfonate is a variety of.
The assistant for emulsifying agent can be selected from Span 20, Span 40, Span 60, Span 80, polysorbas20, polysorbate40, polysorbate60
With one of Tween 80 or a variety of；Preferably, the assistant for emulsifying agent be selected from one of Span 20, Span 60 and Tween 80 or
It is a variety of.
According to the present invention, the initiator can be water soluble starter, and the water soluble starter can be for by over cure
The oxidation-reduction trigger system of hydrochlorate oxidant and sulfite reducing agent composition.In the preferred case, with the monomer A and
On the basis of total dosage of the monomer B, the dosage of the persulfate is 0.01-0.1 weight %, the dosage of the sulphite
For 0.005-0.05 weight %, that is to say, that the dosage of the persulfate is the 0.01- of total dosage of monomer A and monomer B
0.1 weight %, the dosage of the sulphite are the 0.005-0.05 weight % of total dosage of monomer A and monomer B.For example, institute
The oxidant stated in redox type initiators can be the persulfate aqueous solution of 0.2 weight % and/or the mistake of 0.2 weight %
Ammonium sulfate solution；Reducing agent in the redox type initiators can be the bisulfite aqueous solutions of potassium of 0.1 weight %
And/or 0.1 weight % aqueous solution of sodium bisulfite.
It is further preferred that on the basis of total dosage of the monomer A and the monomer B, the dosage of the persulfate
For 0.01-0.05 weight %, when the dosage of the sulphite is 0.01-0.05 weight %, effect is more preferable.
Preferably, the chain-transferring agent can be the tetramethylethylenediamine aqueous solution of 0.1 weight %；And with the monomer A
On the basis of total dosage of the monomer B, the dosage of the chain-transferring agent is 0.01-0.1 weight %；It is further preferred that with
On the basis of total dosage of the monomer A and the monomer B, when the dosage of the chain-transferring agent is 0.01-0.05 weight %, effect
More preferably.
Preferably, the crosslinking agent is the N of 0.1 weight %, N- methylene-bisacrylamide aqueous solution；And with the monomer
On the basis of total dosage of A and the monomer B, the dosage of the crosslinking agent is 0.01-0.1 weight %；Preferably, with the monomer
On the basis of total dosage of A and the monomer B, the dosage of the crosslinking agent is 0.01-0.05 weight %.
According to the present invention, in step (1), the pH value of the aqueous solution is preferably carried out under conditions of 6-10.It is described
PH value can be obtained by the way that pH adjusting agent is added into mixed system, and the pH adjusting agent can be each of this field routine
Kind pH adjusting agent, such as can be at least one of sodium hydroxide, sodium carbonate, potassium carbonate and ammonium hydroxide, preferably hydroxide
Sodium and/or sodium carbonate.
According to the present invention, in step (3), the condition of the polymerization reaction may include: that temperature is 20-40 DEG C, preferably
It is 25-35 DEG C, the time is 6-8 hours, preferably 6-8 hours.
It is polymeric colloid by the product mixtures obtained after the polymerization reaction, tool of the present invention in order to obtain
The polymer end product of selective water blockoff function, method of the invention can also include making the polymeric colloid of acquisition
The polymer end product with selective water plugging function is obtained after grain, dry, crushing, screening.
In the present invention, the environmental condition in the oil field may include: temperature be 40-130 DEG C, preferably 70-110 DEG C,
More preferably 95-110 DEG C；Salinity is 100-200,000mg/L, preferably 10,000-100,000mg/L, more preferably 60,
000-100,000mg/L, most preferably 85,000-100,000mg/L.
A kind of preferred embodiment according to the present invention, the preparation of the polymer with selective water plugging function
Method the following steps are included:
Step 1: monomer A, monomer B and water are added in polymerisation bottle (heat preservation polymerization bottle) and are configured to aqueous solution, is used
The pH value that alkali adjusts the aqueous solution is 6-10；
Step 2: oil-soluble resin, emulsifier being added into the aqueous solution of step 1, stirs evenly, and form lotion；
Step 3: temperature be 20-40 DEG C at, after blasting nitrogen 5-60min, into the lotion of step 2 be added initiator,
Chain-transferring agent and crosslinking agent, and make it after mixing blasting nitrogen, sealing polymerization 6-8h obtains polymeric colloid；
Step 4: take out colloid be granulated, dried again, being crushed, sieve after obtain the polymerization with selective water plugging function
Object finished product.
Third aspect present invention provides the polymerization with selective water plugging function that method described above is prepared
Object.
Fourth aspect present invention provides the polymer with selective water plugging function described above, and alternatively property is stifled
The application of aqua.
In the above-mentioned polymer with selective water plugging the function alternatively application of property water shutoff agent, specific application side
The technology that method is well known to those skilled in the art.
The present invention synthesizes the aqua type water blockoff material containing oil-soluble polymerization composition granule in a kind of system using the method for polymerization
Material, that is to say, that polymerize in water phase using acrylamide monomers, form the crosslinking of spatial networks under the action of crosslinking agent
Structure embeds resin particle, and the suspension stability and particles' interaction of reinforced resin particle pass through resin particle
Achieve the effect that the not stifled oil of water blockoff to improve the oil/water selectivity of water blockoff agent material with the different role mechanism of grease.This
It is suspended particulate that the technical solution of invention, which chooses oil-soluble resin, and forms cross-linked structure, so that the heatproof for improving water shutoff agent is anti-
Salt and oil/water selectivity.
The present invention will be described in detail by way of examples below.
Oil-soluble phenolic resin is purchased from Jining Hua Kai resin Co., Ltd, the trade mark 2402；
Petropols are purchased from Shenzhen Jitian Chemical Co., Ltd., trade mark C5C9；
Coumarone indene resin is purchased from Shandong Xiang Zhao new material Co., Ltd, trade mark 18#；
Acrylamide raw material is the commercially available product of Shandong Polymer Bio-Chemicals Co., Ltd.'s production；
2- acrylamide-2-methylpro panesulfonic acid raw material is the commercially available of the high-quality product of Xiamen vast of heaven Chemical Co., Ltd. production
Product.
In following embodiment, the test method being related to is as follows:
Sealing ratiod is on core flow test device according to " drilling fluid bridges plugging material Experimental Method in Laboratory " SY/
Sealing ratiod testing procedure in T5840-2007 carries out.Specifically:
The measurement of water plugging rate: artificial core is packed into core holding unit, is first saturated with water, its pore volume PV and water phase are surveyed
Permeability (Kw1), it is then injected into the water shutoff agent of 1.0PV, after conserving for 24 hours at 90 DEG C, then with after its addition water shutoff agent of aquametry
Permeability (Kw2), Kw2And Kw1Ratio (Kw2/Kw1) it is water plugging rate.
The measurement of oil plugging rate: being packed into core holding unit for artificial core, first with oil saturation, surveys its pore volume PV and oily phase
Permeability (Ko1), it is then injected into the water shutoff agent of 1.0PV, after conserving for 24 hours at 90 DEG C, then with after its addition water shutoff agent of oil measurement
Permeability (Ko2), Ko2And Ko1(Ko2/Ko1) it is oil plugging rate.
The measurement of resistance to erosion multiple: after measuring water plugging rate, continue to inject 50 times of pore volume injecteds (PV) in rock core
Water, while recording the permeability under different PV numbers, and different PV are calculated according to the above-mentioned measuring method about water plugging rate
Water plugging rate under several, the maximum PV number of resistance to erosion multiple injected water when being water plugging rate >=80%.Under normal conditions, it measures
Water plugging rate under 50PV number, the value >=80% illustrate that the material has excellent flushing resistance.
Wherein, artificial core is obtained and tamping the quartz sand of 40-60 mesh in a mold.
Embodiment 1
The present embodiment indicates that the polymer with selective water plugging function of method preparation provided by the invention.
1, weigh 90.0g acrylamide (on the basis of the water of 100 parts by weight, the dosage of monomer A is 9 parts by weight) and
10.0g 2- acrylamide-2-methylpro panesulfonic acid (on the basis of the water of 100 parts by weight,
The dosage of monomer B is 1 parts by weight) it is added in the water of 1000mL and stirs after completely dissolution, with alkali (sodium hydroxide)
The pH value for adjusting the aqueous solution is 6.0, obtains stable aqueous solution；
2, weighing 200.0g oil-soluble phenolic resin, (on the basis of the water of 100 parts by weight, the dosage of oil-soluble resin is 20
Parts by weight), 50.0g primary emulsion SDBS (on the basis of the water of 100 parts by weight, the dosage of primary emulsion is 5 parts by weight) and
45.0g assistant for emulsifying agent Span 20 (on the basis of the water of 100 parts by weight, the dosage of assistant for emulsifying agent is 4.5 parts by weight) is added to
It states in solution, forms stable lotion after being sufficiently stirred；
3, the persulfate aqueous solution 0.5g of 0.2 weight %, the Asia of 0.1 weight % are sequentially added into the lotion of step 2
Sodium bisulphate solution 0.5g (on the basis of total dosage 100g of the monomer A and monomer B, the use of the persulfate
Amount is 0.1 weight %, and the dosage of the sulphite is 0.05 weight %) and tetramethylethylenediamine aqueous solution 0.1g (with described
On the basis of total dosage 100g of the monomer A and monomer B, the dosage of chain-transferring agent is 0.01 weight %) and 0.1 weight %
N, N- methylene-bisacrylamide aqueous solution 0.1g (on the basis of total dosage 100g of the monomer A and monomer B, crosslinking
The dosage of agent is 0.01 weight %), after emulsification is sufficiently stirred, 20 DEG C are risen to, causes polymerization and obtains containing network structure packet for 6 hours
Bury the polymeric colloid of resin particle；
4, polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as DSJ1 by the simulation salt water of 000mg/L.
Test result, under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water blockoff of the DSJ1
Rate is 98.6%, oil plugging rate 4.6%, and resistance to erosion multiple is greater than 50PV.
Illustrate that the water shutoff material that the present embodiment is prepared has excellent selective shut-off rate and resistance to erosion to oil/water
Property, it is especially remained under high temperature and high salt conditions with preferable oil/water selective shut-off rate.
Embodiment 2
The present embodiment indicates that the polymer with selective water plugging function of method preparation provided by the invention.
1, weigh 100.0g acrylamide (on the basis of the water of 100 parts by weight, the dosage of monomer A is 10 parts by weight) and
The 2- acrylamide-2-methylpro panesulfonic acid of 50.0g (on the basis of the water of 100 parts by weight, the dosage of monomer B is 5 parts by weight)
It is added in the water of 1000mL and stirs after completely dissolution, be 7.0 with the pH value that alkali (sodium carbonate) adjusts the aqueous solution, stablized
Aqueous solution；
2, weighing 300.0g Petropols, (on the basis of the water of 100 parts by weight, the dosage of oil-soluble resin is 30 weight
Part), 70.0g primary emulsion SDBS (on the basis of the water of 100 parts by weight, the dosage of primary emulsion is 7 parts by weight) and 30.0g help
Emulsifier Span 60 (on the basis of the water of 100 parts by weight, the dosage of assistant for emulsifying agent is 3 parts by weight) is added in above-mentioned solution,
Stable lotion is formed after being sufficiently stirred；
3, the persulfate aqueous solution 0.25g of 0.2 weight %, 0.1% sulfurous acid are sequentially added in lotion into step 2
(on the basis of total dosage 150g of the monomer A and monomer B, the dosage of the persulfate is hydrogen sodium water solution 0.5g
0.033 weight %, the dosage of the sulphite are 0.033 weight %) and tetramethylethylenediamine aqueous solution 0.75g (with described
On the basis of total dosage 150g of the monomer A and monomer B, the dosage of the chain-transferring agent is 0.05 weight %) and 0.1 weight
The N,N methylene bis acrylamide aqueous solution 0.75g of % is measured (using total dosage 150g of the monomer A and monomer B as base
Standard, the dosage of crosslinking agent are 0.05 weight %), after emulsification is sufficiently stirred, 25 DEG C are risen to, causes polymerization and obtains containing net for 6 hours
The polymeric colloid of network structure embeding resin particle；
4, polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as DSJ2 by the simulation salt water of 000mg/L.
Test result, under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water blockoff of the DSJ2
Rate is 99.2%, oil plugging rate 4.1%, and resistance to erosion multiple is greater than 50PV.
Illustrate that the water shutoff material that the present embodiment is prepared has excellent selective shut-off rate and resistance to erosion to oil/water
Property, it is especially remained under high temperature and high salt conditions with preferable oil/water selective shut-off rate.
Embodiment 3
The present embodiment indicates that the polymer with selective water plugging function of method preparation provided by the invention.
1, weigh 150.0g acrylamide (on the basis of the water of 100 parts by weight, the dosage of monomer A is 15 parts by weight) and
The 2- acrylamide-2-methylpro panesulfonic acid of 50.0g (on the basis of the water of 100 parts by weight, the dosage of monomer B is 5 parts by weight)
It is added in the water of 1000mL and stirs after completely dissolution, be 8.0 with the pH value that alkali (sodium hydroxide) adjusts the aqueous solution, obtain steady
Fixed aqueous solution；
2, weighing 400.0g coumarone indene resin, (on the basis of the water of 100 parts by weight, the dosage of oil-soluble resin is 40 weight
Part), 50.0g primary emulsion SDBS (on the basis of the water of 100 parts by weight, the dosage of primary emulsion is 5 parts by weight) and 50.0g help
Emulsifier tween 80 (on the basis of the water of 100 parts by weight, the dosage of assistant for emulsifying agent is 5 parts by weight) is added in above-mentioned solution,
Stable lotion is formed after being sufficiently stirred；
3,0.2% persulfate aqueous solution 0.5g, 0.1% sodium hydrogensulfite are sequentially added in lotion into step 2
(on the basis of total dosage 200g of the monomer A and monomer B, the dosage of the persulfate is 0.05 to aqueous solution 1.0g
Weight %, the dosage of the sulphite are 0.05 weight %) and tetramethylethylenediamine aqueous solution 2.0g (with the monomer A with
On the basis of total dosage 200g of the monomer B, the dosage of the chain-transferring agent is 0.1 weight %) and 0.1 weight % N, N-
Methylene-bisacrylamide aqueous solution 2.0g (on the basis of total dosage 200g of the monomer A and monomer B, crosslinking agent
Dosage is 0.1 weight %), after emulsification is sufficiently stirred, 25 DEG C are risen to, causes polymerization and obtains within 8 hours embedding tree containing network structure
The polymeric colloid of rouge particle；
4, polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as DSJ3 by the simulation salt water of 000mg/L.
Test result, under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water blockoff of the DSJ3
Rate is 99.9%, oil plugging rate 2.1%, and resistance to erosion multiple is greater than 50PV.
Illustrate that the water shutoff material that the present embodiment is prepared has excellent selective shut-off rate and resistance to erosion to oil/water
Property, it is especially remained under high temperature and high salt conditions with preferable oil/water selective shut-off rate
Embodiment 4
The present embodiment indicates that the polymer with selective water plugging function of method preparation provided by the invention.
1, weigh 200.0g acrylamide (on the basis of the water of 100 parts by weight, the dosage of monomer A is 15 parts by weight) and
The 2- acrylamide-2-methylpro panesulfonic acid of 50.0g (on the basis of the water of 100 parts by weight, the dosage of monomer B is 5 parts by weight)
It is added in the water of 1000mL and stirs after completely dissolution, be 8.0 with the pH value that alkali (sodium carbonate) adjusts the aqueous solution, stablized
Aqueous solution；
2, weighing 400.0g coumarone indene resin, (on the basis of the water of 100 parts by weight, the dosage of oil-soluble resin is 40 weight
Part), 50.0g primary emulsion SDBS (on the basis of the water of 100 parts by weight, the dosage of primary emulsion is 5 parts by weight) and 50.0g help
Emulsifier tween 80 (on the basis of the water of 100 parts by weight, the dosage of assistant for emulsifying agent is 5 parts by weight) is added in above-mentioned solution,
Stable lotion is formed after being sufficiently stirred；
3,0.2% persulfate aqueous solution 0.125g, 0.1% bisulfite are sequentially added in lotion into step 2
(on the basis of total dosage 250g of the monomer A and monomer B, the dosage of the persulfate is sodium water solution 0.25g
0.01 weight %, the dosage of the sulphite are 0.01 weight %) and tetramethylethylenediamine aqueous solution 1.25g (with the list
On the basis of total dosage 250g of the body A and monomer B, the dosage of the chain-transferring agent is 0.05 weight %) and 0.1 weight %
N, N- methylene-bisacrylamide aqueous solution 1.25g (on the basis of total dosage 250g of the monomer A and monomer B, hand over
The dosage for joining agent is 0.05 weight %), after emulsification is sufficiently stirred, 40 DEG C are risen to, initiation polymerase 17 hour obtains containing network structure
The polymeric colloid of embeding resin particle；
4, polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as DSJ4 by the simulation salt water of 000mg/L.
Test result, under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water blockoff of the DSJ4
Rate is 99.1%, oil plugging rate 5.3%, and resistance to erosion multiple is greater than 65PV.
Illustrate that the water shutoff material that the present embodiment is prepared has excellent selective shut-off rate and resistance to erosion to oil/water
Property, it is especially remained under high temperature and high salt conditions with preferable oil/water selective shut-off rate.
Embodiment 5
The present embodiment indicates that the polymer with selective water plugging function of method preparation provided by the invention.
Have the method for polymer of selective water plugging function identical using with the preparation of implementation 1, except that: this implementation
The usage amount of monomer in example is different, specifically:
The dosage of acrylamide is 60g (on the basis of the water of 100 parts by weight, the dosage of monomer A is 6 parts by weight), 2- third
The dosage of acrylamide base -2- methyl propane sulfonic acid is 40g (on the basis of the water of 100 parts by weight, the dosage of monomer B is 4 parts by weight),
The dosage of oil-soluble phenolic resin is 200g (on the basis of the water of 100 parts by weight, the dosage of oil-soluble resin is 20 parts by weight),
The dosage of primary emulsion SDBS is 60g (on the basis of the water of 100 parts by weight, the dosage of primary emulsion is 6 parts by weight) and helps cream
The dosage of agent Span 20 is 40.0g (on the basis of the water of 100 parts by weight, the dosage of assistant for emulsifying agent is 4 parts by weight).
Remaining is in the same manner as in Example 1, obtains the polymeric colloid containing network structure embeding resin particle；
Polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as DSJ5 by the simulation salt water of 000mg/L.
Test result: under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water blockoff of the DSJ5
Rate is 99.7%, oil plugging rate 5.1%, and resistance to erosion multiple is 60PV, and specifically, resistance to erosion multiple is 60-70PV.
Illustrate that the water shutoff material that the present embodiment is prepared has excellent selective shut-off rate and resistance to erosion to oil/water
Property, it is especially remained under high temperature and high salt conditions with preferable oil/water selective shut-off rate.
Embodiment 6
The present embodiment indicates that the polymer with selective water plugging function of method preparation provided by the invention.
Have the method for polymer of selective water plugging function identical using with the preparation of implementation 1, except that: this implementation
The usage amount of monomer in example is different, specifically:
The dosage of acrylamide is 80g (on the basis of the water of 100 parts by weight, the dosage of monomer A is 8 parts by weight), 2- third
The dosage of acrylamide base -2- methyl propane sulfonic acid is 30g (on the basis of the water of 100 parts by weight, the dosage of monomer B is 3 parts by weight),
The dosage of oil-soluble phenolic resin is 300g (on the basis of the water of 100 parts by weight, the dosage of oil-soluble resin is 30 parts by weight),
The dosage of primary emulsion SDBS is 80g (on the basis of the water of 100 parts by weight, the dosage of primary emulsion is 8 parts by weight) and helps cream
The dosage of agent Span 20 is 20g (on the basis of the water of 100 parts by weight, the dosage of assistant for emulsifying agent is 2 parts by weight).
Remaining is in the same manner as in Example 1, obtains the polymeric colloid containing network structure embeding resin particle；
Polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as DSJ6 by the simulation salt water of 000mg/L.
Test result: under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water blockoff of the DSJ6
Rate is 99.5%, oil plugging rate 3.2%, and resistance to erosion multiple is 80PV, and specifically, resistance to erosion multiple is 80-90PV.
Illustrate that the water shutoff material that the present embodiment is prepared has excellent selective shut-off rate and resistance to erosion to oil/water
Property, it is especially remained under high temperature and high salt conditions with preferable oil/water selective shut-off rate.
Comparative example 1
Have the method for polymer of selective water plugging function identical using with the preparation of implementation 1, except that: this implementation
The usage amount of monomer in example is different, specifically, the dosage of acrylamide be 210g (on the basis of the water of 100 parts by weight, monomer
The dosage of A is 21 parts by weight), the dosage of 2- acrylamide-2-methylpro panesulfonic acid is 60g (using the water of 100 parts by weight as base
Standard, the dosage of monomer B are 6 parts by weight), the dosage of oil-soluble phenolic resin is 100g (oily on the basis of the water of 100 parts by weight
The dosage of soluble resin is 10 parts by weight), the dosage of primary emulsion SDBS be 40g (on the basis of the water of 100 parts by weight, main cream
The dosage of agent is 4 parts by weight) and the dosage of assistant for emulsifying agent Span 20 be that 100g (on the basis of the water of 100 parts by weight, helps emulsification
The dosage of agent is 10 parts by weight).
Remaining is in the same manner as in Example 1, obtains the polymeric colloid containing network structure embeding resin particle.
Polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as D1 by the simulation salt water of 000mg/L.
Test result: under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water plugging rate of the D1
It is 78.2%, oil plugging rate 18.6%, resistance to erosion multiple is 0PV.
Illustrate that the water shutoff material that this comparative example is prepared does not have excellent selective shut-off rate and resistance to erosion to oil/water
Property, do not have preferable oil/water selective shut-off rate especially under high temperature and high salt conditions.
Comparative example 2
Have the method for polymer of selective water plugging function identical using with the preparation of implementation 1, except that: this implementation
The usage amount of monomer in example is different, specifically, the dosage of acrylamide be 200g (on the basis of the water of 100 parts by weight, monomer
The dosage of A is 20 parts by weight), the dosage of 2- acrylamide-2-methylpro panesulfonic acid is 100g (using the water of 100 parts by weight as base
Standard, the dosage of monomer B are 10 parts by weight), the dosage of oil-soluble phenolic resin is 500g (oily on the basis of the water of 100 parts by weight
The dosage of soluble resin is 50 parts by weight), the dosage of primary emulsion SDBS be 40g (on the basis of the water of 100 parts by weight, main cream
The dosage of agent is 4 parts by weight) and the dosage of assistant for emulsifying agent Span 20 be that 30g (on the basis of the water of 100 parts by weight, helps emulsification
The dosage of agent is 3 parts by weight).
Remaining is in the same manner as in Example 1, obtains the polymeric colloid containing network structure embeding resin particle.
Polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as D2 by the simulation salt water of 000mg/L.
Test result: under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water plugging rate of the D2
It is 82.3%, oil plugging rate 20.6%, resistance to erosion multiple is 2PV.
Illustrate that the water shutoff material that this comparative example is prepared does not have excellent selective shut-off rate and resistance to erosion to oil/water
Property, do not have preferable oil/water selective shut-off rate especially under high temperature and high salt conditions.
Comparative example 3
Using with implementation 1 preparation have the method for polymer of selective water plugging function it is identical, except that: not plus
Enter crosslinking agent, obtains the polymeric colloid containing network structure embeding resin particle.
Polymeric colloid obtains the water shutoff material of powder-type after granulation, drying and crushing, uses salinity for 100,
Water shutoff material is configured to the aqueous solution that mass concentration is 0.1%, as D3 by the simulation salt water of 000mg/L.
Test result: under conditions of high temperature (95 DEG C) and (salinity 100,000mg/L) with high salt, the water plugging rate of the D3
It is 96.2%, oil plugging rate 5.3%, resistance to erosion multiple is less than 30PV.
Although illustrating that the water shutoff material that this comparative example is prepared has excellent selective shut-off rate and resistance to punching to oil/water
Brush, and also there is preferable oil/water selective shut-off rate under high temperature and high salt conditions, still, since this comparative example does not have
There is addition crosslinking agent, do not form the polymeric colloid of network structure embeding resin particle, therefore, effect does not have embodiment 1-
6 it is good.
Through the foregoing embodiment with comparative example it is found that the present invention by being added acrylamide monomer, sulfonic acid in aqueous solution
Monomer, oil-soluble resin and emulsifier form stable emulsion system after stirring, initiator, chain-transferring agent and crosslinking agent is added,
It carries out causing polymerization at 20-40 DEG C and crosslink, obtain the polymeric colloid containing network structure embeding resin particle, glue
Body obtains a kind of water shutoff material of powder-type after granulation, drying and crushing.According to Oil Field demand, can be matched using live water
The water shutoff agent of different quality concentration is made；And the dosage satisfaction of acrylamide monomer, sulfonic acid monomer, oil-soluble resin and emulsifier
Within above-mentioned limited range, the present invention can be completed, and is had the effect of excellent.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (11)
1. a kind of polymer with selective water plugging function, which is characterized in that the polymer be initiator, chain-transferring agent,
Crosslinking agent and as the water of solvent in the presence of, keep the emulsion polymerization containing monomer A, monomer B, oil-soluble resin and emulsifier anti-
It answers and is made, wherein the monomer A is acrylamide；The monomer B is sulfonic acid monomer, and the sulfonic acid monomer is 2- propylene
Amide groups -2- methyl propane sulfonic acid；The oil-soluble resin is rosin resin, gum dammar, oil-soluble phenolic resin, petroleum tree
One of rouge, terpene resin and coumarone indene resin are a variety of；The emulsifier includes primary emulsion and/or assistant for emulsifying agent.
2. polymer according to claim 1, wherein on the basis of the water of 100 parts by weight, the dosage of the monomer A is
0.9-20 parts by weight, the dosage of the monomer B are 0.1-5 parts by weight, and the dosage of the oil-soluble resin is 20-40 parts by weight,
The dosage of the primary emulsion is 4.5-9.5 parts by weight, and the dosage of the assistant for emulsifying agent is 0.5-5.5 parts by weight；
Preferably, on the basis of the water of 100 parts by weight, the dosage of the monomer A is 9-20 parts by weight, the dosage of the monomer B
Dosage for 1-5 parts by weight, the oil-soluble resin oil-soluble resin is 30-40 parts by weight, and the dosage of the primary emulsion is
5-7 parts by weight, the dosage of the assistant for emulsifying agent are 2-5 parts by weight；
Preferably, the resistance to erosion multiple of the polymer is greater than 50PV.
3. polymer according to claim 1 or 2, wherein the primary emulsion is selected from dodecyl sodium sulfate, dodecane
One of base sodium sulphate and neopelex are a variety of；Preferably, the primary emulsion is selected from dodecyl sodium sulfonate
Sodium and/or neopelex；
The assistant for emulsifying agent is selected from Span 20, Span 40, Span 60, Span 80, polysorbas20, polysorbate40, polysorbate60 and Tween 80
One of or it is a variety of；Preferably, the assistant for emulsifying agent is selected from one of Span 20, Span 60 and Tween 80 or a variety of.
4. polymer according to claim 1, wherein the initiator is water soluble starter, the water-soluble initiation
Agent is persulfate-sulphite oxidation-reduction trigger system；The chain-transferring agent is tetramethylethylenediamine aqueous solution；Institute
Stating crosslinking agent is N,N methylene bis acrylamide；
Preferably, on the basis of total dosage of the monomer A and the monomer B, the dosage of the persulfate is 0.01-0.1
Weight %, the dosage of the sulphite are 0.005-0.05 weight %；And the dosage of the chain-transferring agent is 0.01-0.1
Weight %；The dosage of the crosslinking agent is 0.01-0.1 weight %.
5. a kind of preparation method of the polymer with selective water plugging function, which is characterized in that the preparation method includes following
Step:
(1) monomer A, monomer B and water are mixed, forms aqueous solution；
(2) oil-soluble resin, emulsifier are mixed with the aqueous solution, forms lotion；
(3) lotion is subjected to polymerization reaction in the presence of initiator, chain-transferring agent and crosslinking agent；
Wherein, the monomer A is acrylamide；The monomer B is sulfonic acid monomer, and the sulfonic acid monomer is 2- acrylamide
Base -2- methyl propane sulfonic acid；The oil-soluble resin is rosin resin, gum dammar, oil-soluble phenolic resin, Petropols, terpene
One of olefine resin and coumarone indene resin are a variety of；The emulsifier includes primary emulsion and/or assistant for emulsifying agent.
6. preparation method according to claim 5, wherein on the basis of the water of 100 parts by weight, the dosage of the monomer A
For 0.9-20 parts by weight, the dosage of the monomer B is 0.1-5 parts by weight, and the dosage of the oil-soluble resin is 20-40 weight
Part, the dosage of the primary emulsion is 4.5-9.5 parts by weight, and the dosage of the assistant for emulsifying agent is 0.5-5.5 parts by weight；
Preferably, on the basis of the water of 100 parts by weight, the dosage of the monomer A is 9-20 parts by weight, the dosage of the monomer B
For 1-5 parts by weight, the dosage of the oil-soluble resin is 30-40 parts by weight, and the dosage of the primary emulsion is 5-7 parts by weight,
The dosage of the assistant for emulsifying agent is 2-5 parts by weight；
Preferably, the resistance to erosion multiple for the polymer being prepared is greater than 50PV.
7. preparation method according to claim 5, wherein the primary emulsion is selected from dodecyl sodium sulfate, dodecane
One of base sodium sulphate and neopelex are a variety of；Preferably, the primary emulsion is selected from dodecyl sodium sulfonate
Sodium and/or neopelex；
The assistant for emulsifying agent is selected from Span 20, Span 40, Span 60, Span 80, polysorbas20, polysorbate40, polysorbate60 and Tween 80
One of or it is a variety of；Preferably, the assistant for emulsifying agent is selected from one of Span 20, Span 60 and Tween 80 or a variety of.
8. preparation method according to claim 5, wherein the initiator is water soluble starter, and the water solubility is drawn
Hair agent is persulfate-sulphite oxidation-reduction trigger system；The chain-transferring agent is tetramethylethylenediamine aqueous solution；
The crosslinking agent is N,N methylene bis acrylamide；
Preferably, on the basis of total dosage of the monomer A and the monomer B, the dosage of the persulfate is 0.01-0.1
Weight %, the dosage of the sulphite are 0.005-0.05 weight %；And
The dosage of the chain-transferring agent is 0.01-0.1 weight %；The dosage of the crosslinking agent is 0.01-0.1 weight %.
9. preparation method according to claim 5, wherein in step (1), the pH value of the aqueous solution is 6-10；With
And in step (3), the condition of the polymerization reaction includes: that temperature is 20-40 DEG C, and preferably 25-35 DEG C, the time is that 6-8 is small
When, preferably 7-8 hours.
10. the polymer with selective water plugging function that method described in any one of claim 5-9 is prepared.
11. alternatively property is stifled for the polymer described in any one of claim 1-4 and 10 with selective water plugging function
The application of aqua.
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