CN106350048B - A kind of wellfracturing detergent and its preparation method and application - Google Patents
A kind of wellfracturing detergent and its preparation method and application Download PDFInfo
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- CN106350048B CN106350048B CN201610584259.4A CN201610584259A CN106350048B CN 106350048 B CN106350048 B CN 106350048B CN 201610584259 A CN201610584259 A CN 201610584259A CN 106350048 B CN106350048 B CN 106350048B
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
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Abstract
The present invention provides a kind of wellfracturing detergents, including sulfonate type anionic surfactant, cationic Gemini surfactants, Polyoxyethylene Ether Nonionic Surfactant and water.The detergent have the characteristics that formula is simple, easily prepared, surface tension is low, with the good, economical and efficient of fracturing fluid compatibility etc., adding minimal amount (0.1wt% or so) in existing fracturing fluid can reach preferable washing oil effect.The present invention also provides the preparation method and application of the detergent.
Description
Technical field
The present invention relates to technical field of petrochemical industry, and in particular to one kind detergent used in wellfracturing and its system
Preparation Method and application.
Background technique
China's unconventional petroleum resources rich reserves, exploration and development more and more attention has been paid to.Unconventional reservoir hole lyriform pore
Road is small, and capillary force is big, during slit formation waterflood development of low-permeability reservoirs, usually by the way that surfactant appropriate is added,
Have the effects that reduce interfacial tension, wettability reversal, emulsion dispersion using it, makes the water in crack will under the action of capillary force
Crude oil in matrix cements out, and this effect is known as imbibition effect.
For compact oil reservoir, extensive volume fracturing is one of the key technology that fine and close oil and gas reservoir is successfully developed, largely
Fracturing fluid huge discharge injects stratum in the process, form complicated man-made fracture.Compared with conventional pressure break, extensive volume
Pressure break often appears as the row of returning and leads low (often below 50%), and the row's of returning time is long (up to the several months).
Although oil recovery technique in constantly progress, there is no the spontaneous imbibition phenomena and pressure break skill compact oil reservoir at present
The precedent that art effectively combines is remained in the presence of the urgent need to the method for improving displacement efficiency, pressure break efficiency, especially right
In the exploitation of unconventional oil well.
Summary of the invention
The preparation method of the detergent, the detergent that the purpose of the present invention is to provide a kind of for wellfracturing, and
The application of the detergent, and the fracturing process that the detergent is applied to compact oil reservoir is provided.
According to an aspect of the present invention, a kind of wellfracturing detergent, including sulfonate type anionic surface are provided
Activating agent, cationic Gemini (Shuangzi) surfactant, Polyoxyethylene Ether Nonionic Surfactant and water.
Some preferred embodiments according to the present invention, the detergent is by sulfonate type anionic surfactant, sun
Ionic Gemini surface active, Polyoxyethylene Ether Nonionic Surfactant and water composition.
According to the preferred embodiment of the present invention, it is based on the detergent poidometer, the detergent includes:
Detergent of the invention is compounded by anion, Cationic Gemini Surfactant and nonionic surfactant
Form, especially uniquely with sulfonate type anionic surfactant, cationic Gemini (Shuangzi) surfactant and
The features such as Polyoxyethylene Ether Nonionic Surfactant compound, active high, displacement efficiency is high.This detergent
Overcome the disadvantages of anionic surfactant salt-resistance is poor, inefficient, and be utilized sulfonate type anion and sun from
The Strong synergy that sub- Gemini surface active agent has can realize lower oil water interfacial tension at low concentrations, add
The distinctive wetability of Composed of Non-ionic Surfactant, penetration, washability and low bubble effect, make the detergent compounded out not only
The interfacial tension of grease can be reduced, additionally it is possible to change wettability of rock surface, become the rock surface of glossy wet, weak water wetting
For the wetting of weak water and the wetting of strong water, water is reduced in the contact angle of rock surface, increases driving force caused by liquid self-absorbing, in turn
Greatly improve the washing oil rate of fracturing fluid.
Some preferred embodiments according to the present invention are based on the detergent poidometer, and the detergent includes:
Sulfonate type 20~40wt% of anionic surfactant, preferably 25~35wt%, more preferable 26-33wt%；
2~15wt% of cationic Gemini surfactants, preferably 3~12wt%, more preferable 4-8wt%；
2~20wt% of Polyoxyethylene Ether Nonionic Surfactant, preferably 3~12wt%, more preferable 4-8wt%；With
The water of surplus.
Tests prove that the detergent with content composition has outstanding washing oil effect.
Some preferred embodiments according to the present invention, in the detergent, the sulfonate type anionic surface is living
Property agent: cationic Gemini surfactants: the weight ratio of Polyoxyethylene Ether Nonionic Surfactant be (3.6~7):
(0.8~1.8): 1, preferably (5-6.5): (0.8~1.6): 1.
In some preferred embodiments of the present invention, the sulfonate type anionic surfactant: cationic
The weight ratio of Gemini surface active is 3.7~6.5: 1, preferably 4.5~6.0: 1.
Further preferred embodiment according to the present invention is based on the detergent poidometer, and the detergent includes:
A particularly preferred embodiment according to the present invention is based on the detergent poidometer, and the detergent includes:
According to the present invention, the sulfonate type anionic surfactant is preferably selected from octyl sulfonic acid salt, detergent alkylate
At least one of sulfonate, petroleum sulfonate, heavy alkylbenzene sulfonate and α olefin sulfonate, preferably octyl sulfonic acid salt, ten
At least one of dialkyl benzene sulfonate and petroleum sulfonate.Aforementioned salt is preferably sodium salt.The sulfonate type anion table
Face activating agent is more preferably neopelex and/or petroleum sodium sulfonate.
According to the present invention, the cationic Gemini surfactants are preferably selected from the own diammonium of bromination dimethyl, double ten
Six alkyl dimethyl ammonium bromides, double dodecyldimethylamine base ammonium bromides, double dodecyl dimethyl ammonium chlorides, two bromos-two (two
Methyl dodecyl) at least one of fourth diammonium and two bromo-two (dimethyl dodecyl base) propane-diammoniums；It is preferred that double hexadecanes
Base trimethylammonium bromide and two bromo-two (dimethyl dodecyl base) fourth diammoniums, more preferable dihexadecyldimethylammonium bromide.
According to the present invention, the Polyoxyethylene Ether Nonionic Surfactant be preferably selected from alkyl phenol polyoxyethylene ether,
At least one of fatty alcohol polyoxyethylene ether, propylene glycol polyoxyethylene poly-oxygen propylene aether and alkylolamides polyoxyethylene ether,
Be preferably selected from nonylphenol polyoxyethylene ether (OP-10), fatty alcohol (C12-C16 coconut oleyl alcohol) polyoxyethylene (7) ether (AEO-7) and
At least one of polyoxyethylene lauryl ether, more preferable nonylphenol polyoxyethylene ether (OP-10).
For conventional fracturing fluid, detergent is added in 0.1wt% or so, oil water interfacial tension usually can be in 1-10mN/m
Range, contact angle usually can be in 2-30 ° of ranges.
Sulfonate, Gemini surface active agent and three kinds of nonionic surfactant is utilized in detergent provided by the invention
The compound of substance not pursues merely ultralow surface and interface tension, but passes through the comprehensive oil-water interfaces for reducing fracturing fluid
Power and improve of both wettability of rock surface because usually significantly improving displacement efficiency.
The detergent provided according to the present invention can be prepared by mixing its component.It can be by each component to appoint
Order of anticipating mixes, or mixes according to a graded, preferably the latter.
Therefore, according to the second aspect of the invention, the preparation method of above-mentioned detergent is provided, comprising: by sulfonate
Type anionic surfactant and cationic Gemini surfactants are added to the water, and stir certain time, preferably 20-
After 60min, Polyoxyethylene Ether Nonionic Surfactant is added, continues stirring, preferably 20-60min, obtains the washing oil
Agent.The compound prepared in this way will have better washing oil effect.The preparation process can carry out in a kettle.
The water being used in the present invention can be tap water, oil field reinjection water etc..
According to the third aspect of the present invention, it provides a kind of fracturing fluid, including basic fracturing fluid and mentions according to the present invention
The detergent as described above supplied.
The basis fracturing fluid refers to Common fracturing fluid used in the prior art.
According to the preferred embodiment of the present invention, the fracturing fluid includes being calculated as 0.05- based on the fracturing fluid weight
The detergent of 0.2wt%.
In present invention further optimization embodiment, the fracturing fluid includes being calculated as based on the fracturing fluid weight
The detergent of 0.08-0.14wt%.
In still more preferably embodiment of the invention, the fracturing fluid includes being calculated as based on the fracturing fluid weight
The detergent of 0.085-0.125wt%.
As an innovation of the invention, the present invention devises detergent as described above, and detergent is added
It is used in fracturing fluid.Using the Strong synergy of sulfonate type anion and cation Gemini surfactant, make to compound out
Detergent can not only reduce the oil water interfacial tension of fracturing fluid, additionally it is possible to change fracturing fluid to the wetability of rock surface,
It reduces water and increases driving force caused by liquid self-absorbing in the contact angle of rock surface, and then greatly improve the washing oil of fracturing fluid
Rate.
The fracturing fluid provided according to the present invention, by adding detergent provided by the invention, interfacial tension can be reduced to
Less than 10mN/m, for example, 2-10mN/m；It can decrease below 30 °, such as 10-25 ° in the contact angle of rock surface.It is described
The washing oil rate of fracturing fluid is up to 30wt% or more, such as 32-46wt%.
The fracturing fluid provided according to the present invention is suitable of the addition in Common fracturing fluid (the i.e. described basic fracturing fluid)
The detergent provided is provided and is made.Applicable Common fracturing fluid is not particularly limited, and can be existing any fracturing fluid.
According to certain embodiments of the present invention, the basic fracturing fluid includes: hydroxypropyl guar gum or modified polypropene acyl
Amine: 0.05~0.15wt%；Clay stabilizer: 0.3~1.2wt%；Cleanup additive: 0.3~1.0wt%；Regulator: 0~
1.2wt%；And crosslinking agent: 0~1.2wt%.
Wherein, clay stabilizer, cleanup additive, regulator and crosslinking agent can be commonly used in the art, can be by this field
Technical staff selects as needed.
It is i.e. reachable only need to add seldom amount (0.1wt% or so) in fracturing fluid for the detergent provided according to the present invention
To preferable washing oil effect.Since interfacial tension is low, detergent provided by the invention can even substitute cleanup additive use, meet pressure
Split the technical requirements of liquid.
Rock core after vacuum is saturated is put into different washing oil agent solutions, observes washing oil effect after a week.Through the invention
Contrast on effect when detergent and other Common surface activating agents are used alone, the experimental results showed that, this detergent can will be washed
Oil cut rate raising reaches 30% or more.
According to the fourth aspect of the invention, the detergent provided according to the present invention is provided to construct, especially in wellfracturing
It is the application in compact oil reservoir volume fracturing, trap remaining oil is displaced by imbibition effect especially in compact oil reservoir
Application in construction.According to another aspect of the invention, a kind of compact oil reservoir volume fracturing method, including following step are provided
It is rapid:
I prepares basic fracturing fluid；
The detergent provided according to the present invention is added in the basic fracturing fluid by ii with the amount of 0.05-0.2wt%；
Iii carries out pressing crack construction according to conventional-volume fracturing procedures, fracturing fluid described in ii is pumped to stratum, construction terminates
After carry out the row's of returning operation.The volume fracturing program can choose conventional volume fracturing program.
Basis fracturing fluid described in step i is same as above, wherein it is preferred that its composition includes: hydroxypropyl guar gum or modified poly- third
Acrylamide: 0.05~0.15wt%；Clay stabilizer: 0.3~1.2wt%；Cleanup additive: 0.1~1.0wt%；Regulator: 0~
0.2wt%；Crosslinking agent: 0~1.2wt%.
This detergent is added in the basic fracturing fluid of volume fracturing, in conventional-volume pressure break, by being stored up to oil gas
The 3 D stereo transformation for collecting lithosphere, forms man-made fracture cubic network, realizes that fracturing fracture swept volume maximizes in reservoir,
Greatly improve reservoir effective permeability.In fracturing process, stratum enters in stratum therewith at joint network structure, fracturing fluid, root
The spontaneous imbibition having the function of according to detergent comes out the trap remaining oil that can not be produced in stratum by imbibition, with fracturing fluid
It returns and is discharged to ground.The recovery ratio that this imbibition effect improves is up to 30% or more, substantially increases volume fracturing efficiency.
Preferably, it the fracturing fluid is heated to 50-180 DEG C is passed into fracturing stratum again to use.By heating
Displacement efficiency can be improved in fracturing fluid, and improves washing oil rate.The source of heat energy can select as the case may be, for example, can
To utilize the heat being inevitably generated during execute-in-place.
The present invention is by the way that provided detergent to be added in fracturing fluid, the big, row's of returning time using volume fracturing liquid measure
The features such as long, acts on by the imbibition of surfactant and produces trap remaining oil, increases washing oil rate, improves final pressure break effect
Fruit.
Non-exhaustively, the present invention has the advantage that.
1. being formulated, simple and effective, preparation method is easy.
2. passing through the compounding of three kinds of main active components, detergent of the present invention has reduction interfacial tension, improves wetability
Effect, dosage few (0.1% or so) can reach preferable washing oil effect.The detergent good, high financial profit with compatibility
The features such as.
3. displacing trap remaining oil by imbibition effect in compact oil reservoir since detergent provided by the invention has
Ability, in compact oil reservoir volume fracturing, detergent of the present invention, which is added, can significantly improve fracturing effect.
Specific embodiment
The present invention will be further described combined with specific embodiments below, it should be appreciated that the scope of the present invention is not limited to
This.
In the following Examples and Comparative Examples, washing oil effect evaluating device is referring to Chinese patent CN201233391, whole
Content is herein incorporated by reference.
Embodiment 1
In 2m3Reaction kettle in, be added 600kg tap water, be stirred at room temperature, be added at one time double hexadecyl diformazan
Base ammonium bromide (Yixing City Chemistry Plant) 50kg, (the auspicious foreign surfactant in Guangzhou has nonylphenol polyoxyethylene ether -10 (OP-10)
Limit company) 50kg, after stirring 30 minutes, 300kg neopelex (the limited public affairs of the auspicious foreign surfactant in Guangzhou are added
Department), 30 minutes are continuously stirred to get detergent product of the present invention is arrived.
It takes this detergent product appropriate, is added in fracturing fluid (containing hydroxypropyl guar gum: 0.05wt%~0.15wt%；It is viscous
Soil stabilizer: 0.3wt%~1.2wt%；Cleanup additive: 0.3wt%~1.0wt%；And water), make detergent concentration
0.1wt%.Use the interfacial tension of full-automatic surface tension instrument K100C (German KRUSS company) measurement fracturing fluid for 3mN/m,
Use contact angle measurement JC2000C (Shanghai Zhongchen digital technology equipment Co., Ltd) measurement contact angle for 9 °.By fracturing fluid
It is added to containing saturated core (core parameters: sandstone, diameter 25.01mm, length 50.19mm, permeability 1.1637mD, hole
In the device for washing oil of degree 12.18%), washing oil rate is 42% after a week for imbibition.
Comparative example 1
Detergent of the invention is not added in the fracturing fluid that embodiment 1 uses, criticizes rock core (rock core together using with embodiment 1
Parameter: sandstone, diameter 25.03mm, length 50.22mm, permeability 1.132mD, porosity 12.32%) it is tested, interface
Power is 12mN/m, and contact angle is 31 °, and to measure the washing oil rate of fracturing fluid under the same conditions be 15%.
Compared by embodiment 1 and 1 result of comparative example as it can be seen that add a small amount of detergent of the invention in fracturing fluid,
Displacement efficiency improves 27%.
Comparative example 2
It is similar to Example 1, rock core (core parameters: sandstone, diameter 25.08mm, length are criticized together using with embodiment 1
50.07mm, permeability 1.2086mD, porosity 12.09%) it is tested, the difference is that, it is added without in detergent preparation
Dihexadecyldimethylammonium bromide.The interfacial tension that the fracturing fluid after the detergent is added in measurement is 8.7mN/m, and contact angle is
19 °, washing oil rate is 27%.
Comparative example 3
It is similar to Example 1, rock core (core parameters: sandstone, diameter 25.00mm, length are criticized together using with embodiment 1
50.11mm, permeability 1.1875mD, porosity 12.31%) it is tested, the difference is that, it is added without in detergent preparation
OP-10.The interfacial tension that the fracturing fluid after the detergent is added in measurement is 5.6mN/m, and contact angle is 22 °, and washing oil rate is 21%.
Comparative example 4
It is similar to Example 1, rock core (core parameters: sandstone, diameter 25.01mm, length are criticized together using with embodiment 1
50.10mm, permeability 1.1875mD, porosity 12.31%) it is tested, the difference is that, it is added without in detergent preparation
Neopelex.The interfacial tension that the fracturing fluid after the detergent is added in measurement is 7.7mN/m, and contact angle is 22 °, is washed
Oil cut rate is 20%.
Embodiment 2
In 2m3Reaction kettle in, be added 500kg oil field reinjection water, be stirred at room temperature, be added at one time double hexadecyl
After forty minutes, 300kg sodium petroleum sulfonate (ShaoXing,ZheJiang county south is added in ditallowdimethyl ammonium bromide 50kg, OP-1050kg, stirring
Petrochemical industry Co., Ltd), 30 minutes are continuously stirred to get detergent product of the present invention is arrived.
This detergent product is taken, is added in fracturing fluid, detergent concentration 0.1wt% is made.Measure the interface of fracturing fluid
Tension is 4.5mN/m, and contact angle is 12 °.By fracturing fluid be added to containing with embodiment 1 with batch saturated core (core parameters:
Sandstone, diameter 24.99mm, length 49.98mm, permeability 1.1346mD, porosity 12.83%) device for washing oil in, imbibition one
Washing oil rate is 38% after week.
Embodiment 3
In 2m3Reaction kettle in, be added 500kg tap water, be stirred at room temperature, while being added at one time double hexadecyl
Ditallowdimethyl ammonium bromide 80kg, aliphatic alcohol polyethenoxy (7) ether (AEO-7) (Guangzhou Rui Yang surfactant Co., Ltd) 50kg
Stirring after twenty minutes, is added 300kg octyl sulfonic acid salt (Guangzhou Rui Yang surfactant Co., Ltd), continuously stirs 40 points
Clock to get arrive detergent product of the present invention.
It takes this detergent product appropriate, is added in fracturing fluid, make detergent concentration 0.12wt%.Measure fracturing fluid
Interfacial tension is 5.2mN/m, and contact angle is 18 °.By fracturing fluid be added to containing saturated core (core parameters: carbonate rock, directly
Diameter 25.02mm, length 50.33mm, permeability 0.1637mD, porosity 8.31%) device for washing oil in, imbibition washing oil after a week
Rate is 31%.
Comparative example 5
Detergent of the invention is not added in the fracturing fluid that embodiment 3 uses, criticizes rock core (rock core together using with embodiment 3
Parameter: carbonate rock, diameter 25.04mm, length 51.19mm, permeability 0.1845mD, porosity 7.18%) it is tested,
The washing oil rate that fracturing fluid is measured under the same terms is 16%.
Embodiment 3 and comparative example 5 take tight carbonate to be used as and test rock core using scene.It is added to detergent of the present invention
The displacement efficiency of fracturing fluid improves 15% than the washing oil rate of 6 fracturing fluid of comparative example.As it can be seen that this detergent is to sandstone and carbonate
Rock core washing oil rate can be improved.
Embodiment 4
In 2m3Reaction kettle in, be added 500kg tap water, be stirred at room temperature, be added at one time-two (diformazan of two bromos
Base dodecyl) fourth diammonium (Yixing City Chemistry Plant) 60kg, polyoxyethylene lauryl ether (Shandong Pai Ni Chemical Co., Ltd.)
70kg is added 340kg sodium heavy alkyl benzene sulfonate (Hua Li Chemical Co., Ltd.) after stirring 30 minutes, continuously stirs 30 minutes, i.e.,
Obtain detergent product of the present invention.
It takes this detergent product appropriate, is added in fracturing fluid, make detergent concentration 0.085wt%.Measure fracturing fluid
Interfacial tension be 5.3mN/m, contact angle be 13 °.Fracturing fluid is added to containing saturated core (core parameters: sandstone, diameter
25.05mm, length 50.87mm, permeability 1.1254mD, porosity 12.23%) device for washing oil in, imbibition washing oil after a week
Rate is 33%.
Embodiment 5
Using the identical fracturing fluid for being added to detergent of embodiment 4 and test rock core (core parameters: sandstone, diameter
25.21mm, length 50.20mm, permeability 1.2486mD, porosity 12.35%), only fracturing fluid is added to containing saturation
60 DEG C are heated to before the device for washing oil of rock core, at such a temperature imbibition washing oil rate 40% after a week.
Embodiment 6
In 2m3Reaction kettle in, 500kg tap water is added, is stirred at room temperature, is added at one time double dimethyls
Ammonium chloride (Yixing City Chemistry Plant) 60kg, (the auspicious foreign surfactant in Guangzhou has aliphatic alcohol polyethenoxy (7) ether (AEO-7)
Limit company) 50kg, after stirring 30 minutes, addition 320kg α-sodium olefin sulfonate (Taiyuan Fa Kai Chemical Co., Ltd.) is continuously stirred
40 minutes to get arrive detergent product of the present invention.
It takes this detergent product appropriate, is added in fracturing fluid, make detergent concentration 0.13wt%.Measure fracturing fluid
Interfacial tension is 4.9mN/m, and contact angle is 16 °.Fracturing fluid is added to containing saturated core (core parameters: sandstone, diameter
25.00mm, length 50.46mm, permeability 1.2137mD, porosity 13.03%) device for washing oil in, imbibition washing oil after a week
Rate is 35%.
Embodiment 7
The detergent of above-described embodiment 1 is used for long *-* * well pressing crack construction.3940 meters of the well depth stores up for tight sand
Layer, mean permeability in 0.1md hereinafter, block Lin Jing 3 mouthfuls of pressure break without obvious effect of increasing production.Well Mr. Yu on April 4,
Pressure break is carried out, pressure break formula of liquid contains: detergent prepared by 0.3wt% hydroxypropyl guar gum hydroxyl (HPG)+0.3wt% embodiment 1+
0.5wt% clay stabilizer+0.01wt% regulator, construct total liquid measure 1809.6m3, total sand amount 62.6m3, maximum pressure of constructing
82.1MPa, operational discharge capacity 4.3-6.5m3/ min, open flow drain after pressure, 3mm oil nozzle, oil pressure 4MPa produce liquid 8m daily at present3/ d, contains
Water rate 45%.Add up 102 side of oil-producing after January, stable yields is in 3m at present3/ d, effect of increasing production and stable yields effect are obvious, are the operation areas
Effect of increasing production well is obtained after reservoir first pressure.
By above embodiments and comparative example result as it can be seen that detergent provided by the invention, which has, reduces interfacial tension and pressure
The features such as splitting good liquid compatibility, high financial profit need to only use minimal amount (adding 0.1wt% or so in fracturing fluid) that can show
It writes and improves washing oil effect.
Although the present invention has been described in detail, it will be understood by those skilled in the art that in spirit and scope of the invention
Modification will be apparent.However, it should be understood that various aspects, different specific embodiment that the present invention records
Each section and the various features enumerated can be combined or all or part of exchange.In above-mentioned each specific embodiment, that
A little embodiments with reference to another embodiment can be combined suitably with other embodiment, this is will be by this field skill
Art personnel are to understand.In addition, it will be understood to those of skill in the art that the description of front is only exemplary mode, not purport
In the limitation present invention.
Claims (25)
1. a kind of wellfracturing detergent, including sulfonate type anionic surfactant, cationic Gemini surface are lived
Property agent, Polyoxyethylene Ether Nonionic Surfactant and water；
The sulfonate type anionic surfactant is selected from octyl sulfonic acid salt, dodecyl benzene sulfonate, petroleum sulfonate, again
At least one of alkylbenzene sulfonate and α olefin sulfonate；
The cationic Gemini surfactants be selected from the own diammonium of bromination dimethyl, dihexadecyldimethylammonium bromide,
Double dodecyldimethylamine base ammonium bromides, double dodecyl dimethyl ammonium chlorides, two bromo-two (dimethyl dodecyl base) fourth diammoniums
At least one of with two bromo-two (dimethyl dodecyl base) propane-diammoniums；And/or
The Polyoxyethylene Ether Nonionic Surfactant is selected from alkyl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, third
At least one of glycol polyoxyethylene poly-oxygen propylene aether and alkylolamides polyoxyethylene ether.
2. detergent according to claim 1, which is characterized in that be based on the detergent poidometer, the detergent packet
Contain:
3. detergent according to claim 2, which is characterized in that be based on the detergent poidometer, the detergent packet
Contain:
4. detergent according to claim 2, which is characterized in that be based on the detergent poidometer, the detergent packet
Contain:
20~40wt% of sulfonate type anionic surfactant；
2~15wt% of cationic Gemini surfactants；
2~20wt% of Polyoxyethylene Ether Nonionic Surfactant；With
The water of surplus.
5. detergent according to claim 4, which is characterized in that be based on the detergent poidometer, the detergent packet
Contain:
25~36wt% of sulfonate type anionic surfactant；
3~12wt% of cationic Gemini surfactants；
3~12wt% of Polyoxyethylene Ether Nonionic Surfactant；With
The water of surplus.
6. detergent according to any one of claims 1-5, which is characterized in that be based on the detergent poidometer, institute
State sulfonate type anionic surfactant: cationic Gemini surfactants: Polyoxyethylene Ether non-ionic surface is living
Property agent weight ratio be (3.6~7): (0.8~1.8): 1.
7. detergent according to claim 6, which is characterized in that be based on the detergent poidometer, sulfonate type yin from
Sub- surfactant: the weight ratio of cationic Gemini surfactants is 3.7~6.5:1.
8. detergent according to any one of claims 1-5, which is characterized in that be based on the detergent poidometer, institute
Stating detergent includes:
28~32wt% of sulfonate type anionic surfactant；
4~8wt% of cationic Gemini surfactants；
4~8wt% of Polyoxyethylene Ether Nonionic Surfactant；With
The water of surplus.
9. detergent according to any one of claims 1-5, which is characterized in that the sulfonate type anionic surface is living
Property agent be selected from least one of octyl sulfonic acid salt, dodecyl benzene sulfonate and petroleum sulfonate.
10. detergent according to claim 9, which is characterized in that the sulfonate type anionic surfactant is ten
Dialkyl benzene sulfonate.
11. detergent according to any one of claims 1-5, which is characterized in that the cationic Gemini surface
Activating agent is selected from double hexadecyl trimethylammonium bromide and two bromo-two (dimethyl dodecyl base) fourth diammoniums.
12. detergent according to claim 11, which is characterized in that the cationic Gemini surfactants are double
Cetyl dimethyl ammonium bromide.
13. detergent according to any one of claims 1-5, which is characterized in that the Polyoxyethylene Ether nonionic
Surfactant is selected from nonylphenol polyoxyethylene ether, aliphatic alcohol polyethenoxy (7) ether and polyoxyethylene lauryl ether at least
It is a kind of.
14. detergent according to claim 13, which is characterized in that the Polyoxyethylene Ether Nonionic Surfactant
For nonylphenol polyoxyethylene ether.
15. the preparation method of detergent described in any one of -14 according to claim 1, comprising: by sulfonate type anion table
Face activating agent and cationic Gemini surfactants are added to the water, and stirring after a certain period of time, adds Polyoxyethylene Ether
Nonionic surfactant continues to stir, and obtains the detergent.
16. the preparation method of detergent according to claim 15, comprising: by sulfonate type anionic surfactant and
Cationic Gemini surfactants are added to the water, and after stirring 20-60min, add Polyoxyethylene Ether non-ionic surface
Activating agent continues to stir, and obtains the detergent.
17. a kind of fracturing fluid, the detergent including basic fracturing fluid and as described in any one of claim 1-14.
18. fracturing fluid according to claim 17, which is characterized in that including being calculated as 0.05- based on the fracturing fluid weight
The detergent of 0.2wt%.
19. fracturing fluid according to claim 18, which is characterized in that including being calculated as 0.08- based on the fracturing fluid weight
The detergent of 0.14wt%.
20. fracturing fluid according to claim 17, which is characterized in that the oil water interfacial tension of the fracturing fluid is in 10mN/m
Hereinafter, the fracturing fluid is in rock surface contact angle at 30 ° or less.
21. fracturing fluid described in any one of 7 to 20 according to claim 1, which is characterized in that the basis fracturing fluid includes:
Hydroxypropyl guar gum or modified polyacrylamide: 0.05~0.15wt%,
Clay stabilizer: 0.3~1.2wt%,
Cleanup additive: 0.3~1.0wt%,
Regulator: 0~1.2wt%, and
Crosslinking agent: 0~1.2wt%.
22. application of the detergent described in any one of -14 in wellfracturing construction according to claim 1.
23. application according to claim 22, which is characterized in that the detergent is in compact oil reservoir volume fracturing
Using.
24. application according to claim 22, which is characterized in that the detergent is made in compact oil reservoir by imbibition
With the application in the construction for displacing trap remaining oil.
25. a kind of compact oil reservoir volume fracturing method, comprising the following steps:
I configures basic fracturing fluid；
According to claim 1, detergent described in any one of -14 is added to the basis with the amount of 0.05-0.2wt% by ii
In fracturing fluid；
Iii carries out pressing crack construction according to volume fracturing program, and the fracturing fluid that step ii is obtained is pumped to stratum, and pressure break is applied
The row's of returning operation is carried out after work.
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| CN109233779A (en) * | 2017-11-20 | 2019-01-18 | 北京鸿威石油工程技术服务有限公司 | A kind of anti-salt temperature-resistant high-efficient oil-displacing agent and preparation method thereof improving oil recovery factor |
| CN108485627B (en) * | 2018-04-28 | 2020-06-09 | 西南石油大学 | Preparation of clay anti-swelling agent with oil washing effect for water injection |
| CN111022006A (en) * | 2019-12-06 | 2020-04-17 | 大庆金军石油科技开发有限公司 | Method for improving shale oil well recovery ratio through carbon dioxide composite huff and puff |
| CN111205847B (en) * | 2020-01-18 | 2020-12-29 | 海兴县新源化工有限公司 | Oil well fracturing cross-linking agent, preparation device and preparation method thereof |
| CN114426828A (en) * | 2020-09-25 | 2022-05-03 | 中国石油化工股份有限公司 | Oil washing demulsifier for fracturing fluid and application thereof |
| CN114426830B (en) * | 2020-10-29 | 2023-02-21 | 中国石油化工股份有限公司 | Temperature-resistant salt-resistant efficient fracturing fluid imbibition agent and preparation method and application thereof |
| CN115851251A (en) * | 2021-09-23 | 2023-03-28 | 中国石油天然气股份有限公司 | Fracturing oil displacement agent and preparation method and application thereof |
| CN116240009A (en) * | 2022-11-18 | 2023-06-09 | 济南大学 | Surfactant for oil displacement and preparation method thereof |
| CN115975621A (en) * | 2023-02-13 | 2023-04-18 | 河北工业职业技术学院 | Fracturing fluid imbibition agent and fracturing fluid |
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