CN105085783B - A kind of polystyrene acrylic acid ethyl ester and its synthetic method and application - Google Patents
A kind of polystyrene acrylic acid ethyl ester and its synthetic method and application Download PDFInfo
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- CN105085783B CN105085783B CN201510423065.1A CN201510423065A CN105085783B CN 105085783 B CN105085783 B CN 105085783B CN 201510423065 A CN201510423065 A CN 201510423065A CN 105085783 B CN105085783 B CN 105085783B
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Abstract
The invention provides a kind of polystyrene acrylic acid ethyl ester and its synthetic method and application.The polystyrene acrylic acid ethyl ester of the present invention is prepared by the method comprised the following steps：Using ethyl acrylate and styrene as reaction monomers, in the presence of dispersant vinyl bis-stearamides and initiator benzoyl peroxide, suspension polymerization is carried out by decentralized medium of water.The polystyrene acrylic acid ethyl ester of the present invention has the following advantages that：Test result shows to be completely dissolved in crude oil using the polystyrene acrylic acid ethyl ester produced of synthetic method of the present invention, by gas chromatograph-mass spectrometer can Accurate Determining its concentration, dosage is few, meets the needs of horizontal well oil-producing profile monitoring.
Description
Technical field
The present invention relates to oil exploration and development fields, specifically, are related to a kind of polystyrene acrylic acid ethyl ester and its conjunction
Into methods and applications.
Background technology
At present during In Oil Field Exploration And Development, prospect pit uses horizontal well more, and multi-layer multi-stage pressure break is stratum transformation
Preferred technique, but during layer position selects, be all to select to be layered by experience without specific aim, thus for pressure break after
Data acquisition and issuance fracturing effect be just particularly important.In the prior art, can be supervised by micro seismic method, potentiometry etc.
Fracture intensity after pressure break is surveyed and analyzed, whether has commercial oil by the row's of returning situation awareness reservoir, but for staged fracturing
Each section of oil-producing situation does not have effective monitoring method afterwards.
Multistage fracturing technique building technology and corollary equipment are ripe, have realized 30 grades of pressure breaks, largest domestic in the world
Pressure break series is more than 15 grades.Because pressure break series is more, long horizontal sections physical property has differences in addition, discharge opeing feelings after every grade of pressure break
Evaluation and next step well site deployment of the condition for fracturing effect have great importance, but for each section after staged fracturing of oil-producing
Situation does not have effective monitoring method.To solve the technical problem, during multistage fracturing, every section is mixed in fracturing propping agents
Enter different types of solid oil-soluble tracer particles, be constantly dissolved in original with the output solid oil-soluble tracer particles of crude oil
In oil, by analyzing the concentration of tracer in production fluid, reach the mesh that every section of oil-producing situation of analysis draws every section of oil-producing liquid section
's.Because current largest domestic pressure break series is more than 15 grades, therefore mutually in requisition for 15 kinds of level above well oil-producing profile monitorings
Use tracer.
Conventional oil field is water solubility with tracer, and the few dosage of species is big, is not suitable for horizontal well multi-layer multi-stage pressure
The monitoring of rear each section of oil-producing situation is split, tracer of the present invention is oil-soluble, and accuracy of detection is high when concentration is low, and dosage is low.
During multistage fracturing, every section is mixed into different types of solid oil-soluble tracer particles in fracturing propping agents, with original
The output solid oil-soluble tracer particles of oil are constantly dissolved in crude oil, by analyzing the concentration of tracer in production fluid, are reached
Analyze the purpose that every section of oil-producing situation draws every section of oil-producing liquid section.
The content of the invention
It is an object of the present invention to provide a kind of synthetic method of polystyrene acrylic acid ethyl ester；
The polystyrene acrylic acid ethyl ester being prepared another object of the present invention is to provide the synthetic method；
It is still another object of the present invention to provide described polystyrene acrylic acid ethyl ester to prepare horizontal well oil-producing section
The application of monitoring tracer；
A further object of the present invention is to provide the horizontal well oil-producing section containing described polystyrene acrylic acid ethyl ester
Monitoring tracer.
For the above-mentioned purpose, on the one hand, described the invention provides a kind of synthetic method of polystyrene acrylic acid ethyl ester
Method is included using ethyl acrylate and styrene as reaction monomers, exists in vinyl bis-stearamides and benzoyl peroxide
Under, carry out polymerisation by decentralized medium of water.
Vinyl bis-stearamides therein are dispersant, and benzoyl peroxide is initiator.
Wherein described ethyl acrylate (CH2=CHCOOC2H5), benzoyl peroxide (C6H5C(O)O2), styrene (C8H8)
With vinyl bis-stearamides (C38H76N2O2) it is this area conventional reagent, any commercially available ethyl acrylate commonly used in the art,
Benzoyl peroxide, styrene and vinyl bis-stearamides may be used to the present invention.
According to some preferred embodiments of the invention, in described synthetic method, to react the whole things added
It is 100% meter to expect gross weight, and adding each weight of material percentage is respectively：Ethyl acrylate is 35-45%, styrene 4-
5%th, vinyl bis-stearamides 0.4-0.6%, benzoyl peroxide 0.4-0.6% and water are 50-60%.
According to some of the invention preferred embodiments, the reaction temperature of polymerisation of the present invention can be 60 DEG C~
70℃；Wherein it is preferably 65 DEG C.
According to some preferred embodiments of the invention, the reaction time of the polymerisation can be 8-10h；It is wherein excellent
Elect 8h as.
According to some preferred embodiments of the invention, methods described includes：Vinyl bis-stearamides are dissolved first
Into water, the mixed solution of ethyl acrylate, styrene and benzoyl peroxide is added, is reacted after the completion of addition and obtains described gather
Styrene ethylacrylate.
According to some preferred embodiments of the invention, methods described includes：Vinyl bis-stearamides are dissolved first
Into 60 DEG C~70 DEG C of water, the mixed solution of ethyl acrylate, styrene and benzoyl peroxide is added.
According to some preferred embodiments of the invention, methods described includes：Vinyl bis-stearamides are dissolved first
Into water, 60 DEG C~70 DEG C constant temperature 30min are warming up to, add the mixing of ethyl acrylate, styrene and benzoyl peroxide
Solution.
According to some preferred embodiments of the invention, methods described includes：Vinyl bis-stearamides are dissolved first
Into water, 65 DEG C of constant temperature 30min are warming up to, add the mixed solution of ethyl acrylate, styrene and benzoyl peroxide.
It is described to be incorporated as being added dropwise according to some preferred embodiments of the invention；
According to some preferred embodiments of the invention, the speed of the dropwise addition is 5-10 drops/min.
According to some preferred embodiments of the invention, methods described also includes：The polystyrene third is obtained in reaction
After olefin(e) acid ethyl ester, it is cooled to room temperature and discharges again.
The present invention provides a kind of synthetic method of oil-soluble tracer polystyrene acrylic acid ethyl ester, with percentage by weight
Meter, 0.1%~0.2% vinyl bis-stearamides are dissolved into 50%~70% hot water first, be warming up to 60 DEG C~
70 DEG C of constant temperature 30min, 25%~45% ethyl acrylate, 2.5%~5% styrene are added dropwise with the speed of per minute 5~10 drops
With the mixed solution of 0.5%~1% benzoyl peroxide, 8h~10h is reacted after being added dropwise to complete, is cooled to room temperature discharging.
On the other hand, present invention also offers the polystyrene third that synthetic method described in any one of the present invention is prepared
Olefin(e) acid ethyl ester.
Another further aspect, present invention also offers described polystyrene acrylic acid ethyl ester to prepare horizontal well oil-producing section prison
The application of survey tracer.
Another aspect, present invention also offers the prison of the horizontal well oil-producing section containing described polystyrene acrylic acid ethyl ester
Survey tracer.
In summary, the invention provides a kind of polystyrene acrylic acid ethyl ester and its synthetic method and application.The present invention
Polystyrene acrylic acid ethyl ester have the following advantages that：
Test result shows to be completely dissolved using the polystyrene acrylic acid ethyl ester that the synthetic method of the present invention is produced
Into crude oil, by gas chromatograph-mass spectrometer can Accurate Determining its concentration, dosage is few, meets the need of horizontal well oil-producing profile monitoring
Will.
Embodiment
The implementation process of the present invention and caused beneficial effect are described in detail below by way of specific embodiment, it is intended to which help is read
Reader more fully understand the present invention essence and feature, not as to this case can practical range restriction.
Embodiment 1
0.4g vinyl bis-stearamides are dissolved into 50g hot water, 65 DEG C of constant temperature 30min is warming up to, is slowly added dropwise
The mixed solution of 45g ethyl acrylates, 5g styrene and 0.6g benzoyl peroxides, 8h is reacted after being added dropwise to complete, is cooled to room
Temperature discharging.
Embodiment 2：
0.5g vinyl bis-stearamides are dissolved into 55g hot water, 65 DEG C of constant temperature 30min is warming up to, is slowly added dropwise
The mixed solution of 40g ethyl acrylates, 4.5g styrene and 0.5g benzoyl peroxides, 8h is reacted after being added dropwise to complete, is cooled to
Room temperature discharges.
Embodiment 3：
0.6g vinyl bis-stearamides are dissolved into 60g hot water, 65 DEG C of constant temperature 30min is warming up to, is slowly added dropwise
The mixed solution of 35g ethyl acrylates, 4g styrene and 0.4g benzoyl peroxides, 8h is reacted after being added dropwise to complete, is cooled to room
Temperature discharging.
Application examples 1
0.1g polystyrene acrylic acid ethyl esters prepared by embodiment 1 are dissolved in 100g crude oil, 70 DEG C is warming up to and treats completely
Take 1g to dilute 20 times with petroleum ether after dissolving is well mixed, contained with polystyrene acrylic acid ethyl ester in gas chromatograph-mass spectrometer determination sample
Amount, test result are shown in Table 1.
Polystyrene acrylic acid ethyl ester measurement result in the sample of table 1
Claims (8)
1. polystyrene acrylic acid ethyl ester is preparing the application of horizontal well oil-producing profile monitoring tracer；The polystyrene third
The synthetic method of olefin(e) acid ethyl ester is included using ethyl acrylate and styrene as reaction monomers, in vinyl bis-stearamides and peroxide
In the presence of changing benzoyl, polymerisation is carried out by decentralized medium of water, to react the whole material gross weights added as 100%
Meter, adding each weight of material percentage is respectively：Ethyl acrylate is 35-45%, styrene 4-5%, vinyl are double hard
Acyl amine is 0.4-0.6%, benzoyl peroxide 0.4-0.6% and water are 50-60%.
2. application according to claim 1, it is characterised in that the reaction temperature of the polymerisation is 60 DEG C~70 DEG C.
3. application according to claim 1, it is characterised in that the reaction time of the polymerisation is 8-10h.
4. application according to claim 1, it is characterised in that methods described includes：First vinyl bis-stearamides
It is dissolved into water, adds the mixed solution of ethyl acrylate, styrene and benzoyl peroxide, is reacted after the completion of addition and obtain institute
State polystyrene acrylic acid ethyl ester.
5. application according to claim 4, it is characterised in that described to be incorporated as being added dropwise.
6. application according to claim 5, it is characterised in that the speed of dropwise addition is 5-10 drops/min.
7. application according to claim 4, it is characterised in that methods described includes：First vinyl bis-stearamides
It is dissolved into 60 DEG C~70 DEG C of water, adds the mixed solution of ethyl acrylate, styrene and benzoyl peroxide.
8. application according to claim 4, it is characterised in that methods described includes：First vinyl bis-stearamides
It is dissolved into water, is warming up to 60 DEG C~70 DEG C constant temperature 20-30min, adds ethyl acrylate, styrene and benzoyl peroxide
Mixed solution.
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