CN106905947A - A kind of displacement of reservoir oil fracturing fluid and preparation method and application - Google Patents
A kind of displacement of reservoir oil fracturing fluid and preparation method and application Download PDFInfo
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- CN106905947A CN106905947A CN201710068691.2A CN201710068691A CN106905947A CN 106905947 A CN106905947 A CN 106905947A CN 201710068691 A CN201710068691 A CN 201710068691A CN 106905947 A CN106905947 A CN 106905947A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/26—Gel breakers other than bacteria or enzymes
Abstract
The present invention provides a kind of displacement of reservoir oil fracturing fluid and preparation method and application, and the displacement of reservoir oil fracturing fluid is counted with its gross weight as 100%, and it includes 0.3~10% surfactant；0~0.5% hydrophobic associated polymer；0.1~0.2% gel breaker；And the water of surplus；Described surfactant is selected from oxidation amine surfactants and/or betaines surfactant；The gel breaker is selected from ethylene glycol monobutyl ether and/or sodium metnylene bis-naphthalene sulfonate.Displacement of reservoir oil fracturing fluid pair of the present invention is different from conventional fracturing fluid, act not only as fracturing fluid and make seam taking sand, breaking glue solution has the effect of displacement of reservoir oil displacement in Reservoir Fracture wall and hole Medium Culture after pressure, oil gas in oil reservoir can be cemented out, effect with recovery ratio after raising pressure, without the row of returning, had both solved current fracturing fluid recovery (backflow) rate, the technical problem of the row's of returning hardly possible, good oil displacement efficiency is realized again, with important actual application value.
Description
Technical field
The present invention relates to a kind of fracturing fluid and preparation method and application, in particular to a kind of with displacement of reservoir oil function
Displacement of reservoir oil fracturing fluid and preparation method and application, belongs to oil-gas field development technical field.
Background technology
With deepening continuously that fine and close oil, the unconventional reservoir that shale gas are representative are transformed, extensive volume renovation technique is
Through the effective technology means as these reservoir economic developments, therefore fracture technology has become of oil-gas field development
Important well stimulation, and used as the working solution of fracturing reform, the high-effect fracturing fluid of Low Damage has become the heat of fracturing fluid research
Door and development trend.Simultaneously in the extensive volume transformation process of unconventional reservoir such as fine and close oil, shale gas, due to pressure break scale
Greatly, seam web area is huge, up to up to a million square metres, a large amount of liquid holdup fracture network spaces and fracture faces, therefore cause
The row of returning leads low after pressure.By reservoir clay content and type, pressure break scale, seam web area, stratum energy, pressure break, the row's of returning technique,
The multi-factor comprehensives such as activity duration influence result, and the row of returning leads and the row's of returning difficulty is the unalterable fact, a large amount of pressure breaks greatly at present
Liquid is detained reservoir, and, for water-sensitive reservoir, the fracturing fluid being trapped in reservoir can cause reservoir damage for this, and effect is increased production after reducing pressure
Really.A kind of New Fracturing Fluid of exploitation is needed badly to solve above-mentioned technical problem in this area.
The content of the invention
It is an object of the invention to provide a kind of displacement of reservoir oil fracturing fluid, it is to solve above-mentioned technology with a kind of new theory to ask
Topic.
It is still another object of the present invention to provide the preparation method of the displacement of reservoir oil fracturing fluid.
Application another object of the present invention is to provide the displacement of reservoir oil fracturing fluid.
Therefore, on the one hand, the present invention provides a kind of displacement of reservoir oil fracturing fluid, is counted with its gross weight as 100%, and it includes：
0.3~10% surfactant；
0~0.5% hydrophobic associated polymer；
0.1~0.2% gel breaker；And
The water of surplus；
Described surfactant is selected from oxidation amine surfactants and/or betaines surfactant；
The gel breaker is selected from ethylene glycol monobutyl ether and/or sodium metnylene bis-naphthalene sulfonate.
Displacement of reservoir oil fracturing fluid pair of the present invention is different from conventional fracturing fluid, acts not only as fracturing fluid and make seam taking sand, pressure
Breaking glue solution has the effect of displacement of reservoir oil displacement in Reservoir Fracture wall and hole Medium Culture afterwards, can displace the oil gas in oil reservoir
Come, the effect with recovery ratio after raising pressure, without the row of returning, both solved current fracturing fluid recovery (backflow) rate, the technology of the row's of returning hardly possible and asked
Topic, realizes good oil displacement efficiency, with important actual application value again.
Contain oxidation amine surfactants and/or betaines surface-active in displacement of reservoir oil fracturing fluid of the present invention
Agent, when its concentration of aqueous solution is 0.3~10%, preferably 0.5~7%, it can form multichain macromolecular micella, form a kind of
Viscoelastic systems, the viscoelastic systems can play a part of to make seam and take sand in pressing crack construction process.After pressure break, at this
Invent in the presence of specific gel breaker, the displacement of reservoir oil fracturing fluid in stratum produces fracturing liquid rubber-breaking liquid by broken glue, and glue is broken in viscosity reduction
Contain a large amount of unimolecule surfactants in liquid, it is attached to fracture spaces and crack core surface, and its surfactant has
Oil displacement efficiency, can the crude oil of fracture cyberspace, fracture faces and nearly fracture matrix area there is metathesis.
Specific embodiment of the invention, in displacement of reservoir oil fracturing fluid of the present invention, described oxidation amine surface
Active agent structures are
Wherein, R1、R2、R3It is independently each alkyl or CH3(CH2)m- C (=O)-NH- (CH2)n-, the alkyl refers to straight
The saturated aliphatic hydrocarbons group of chain or side chain, its main chain includes 1 to 30 carbon atom, and preferably 10 to 30 carbon atoms enter one
Step is preferably 18 to 24 carbon atoms；
The example of alkyl includes but is not limited to methyl, ethyl, n-propyl, isopropyl, normal-butyl, isobutyl group, sec-butyl, uncle
Butyl, n-pentyl, n-hexane base, constructed from normal heptyl, normal octane base, n -nonane base, positive flow silane base, n-undecane base~positive melissane
Base, different undecyl~isotriacontane base；
The alkyl can be substituted or unsubstituted, and when substituted, substitution base can be in any usable company
It is substituted on contact, the preferred alkyl of substitution base, cycloalkyl, alkoxy, aryl, heteroaryl, heterocyclic radical, hydroxyl, amino etc.；
Described m, n is independently each the integer between 1~30；Preferably m is the integer between 10~30, n is 1~
Integer between 10；More preferably m is the integer between 18~24, and n is the integer between 1~5.
In certain specific embodiments of the invention, described oxidation amine surfactants include alkyl amine oxide
And/or alkylamide propyl amine oxide.The alkyl amine oxide refers to, R1、R2、R3In be alkyl；The alkylamide propyl
Amine oxide refers to R1、R2、R3In at least one be CH3(CH2)m- C (=O)-NH- (CH2)3—.As amine oxide surfactant
Example, it can include：Octadecyl dihydroxy ethyl amine oxide, myristyl dihydroxy ethyl amine oxide, dodecyl dihydroxy
One or more in ethyl amine oxide and dodecanamide propyl amine oxide.
Specific embodiment of the invention, in displacement of reservoir oil fracturing fluid of the present invention, described betaines surface
Activating agent refer to hydrophobicity long-chain molecule one end contain it is ionizable into cation and a class amophoteric surface active of anion
Agent；Wherein described cation is usually quaternary ammonium salt, and described anion is usually the one kind in carboxyl, sulfonic group or phosphate
Or it is several.
In certain specific embodiments of the invention, the betaines surfactant is alkyl betaines bases surface
Activating agent, the hydrophobicity long-chain molecule described in the alkyl betaines bases surfactant is chain alkyl, described alkane long
The main chain of base is 10 to 30 carbon atoms, preferably 18 to 24 carbon atoms.As showing for alkyl betaines bases surfactant
Example, it can include：Octadecyl dihydroxy ethyl glycine betaine and/or dodecyl dihydroxy ethyl glycine betaine.
In other specific embodiments of the invention, the betaines surfactant is alkyl amidoalkyl
Beet alkali surface activator, in the alkyl amidoalkyl betaines surfactant hydrophobicity long-chain molecule be CH3
(CH2)m- C (=O)-NH- (CH2)n-, m is the integer between 10~30, and n is the integer between 1~10；It is preferred that m is 18~24
Between integer, n is the integer between 1~5.Used as the example of alkyl amidoalkyl betaines class surfactant, it can
To include：Cocoamidopropyl betaine and/or lauroyl amido CAB.
Specific embodiment of the invention, in displacement of reservoir oil fracturing fluid of the present invention, described lyophobic association gathers
Compound refers to the water-soluble polymer with a small amount of hydrophobic grouping on polymer hydrophilicity macromolecular chain.Lyophobic association is polymerized
Thing may include hydrophobic polypropylene acid amides, it is preferable that the viscosity average molecular weigh 5000 of described hydrophobic associated polymer~
5000000.When lyophobic association polymer is employed in described displacement of reservoir oil fracturing fluid, it can be with the surface in displacement of reservoir oil fracturing fluid
Activating agent Physical interaction, further increases viscosity, additionally, linearly synthesis macromolecule does not have residue, stratum will not be produced
Injury.Used as the example of hydrophobic polypropylene acid amides, it can include：The GRF systems of Sichuan Guangya Polymer Chemical Co., Ltd.
Row hydrophobic polypropylene acylamide polymer.
Specific embodiment of the invention, in displacement of reservoir oil fracturing fluid of the present invention, described gel breaker refers to energy
Enough materials for reducing the viscosity of fracturing fluid of the invention in uniform temperature and in a period of time, the material present invention after breaking gel
Referred to as fracturing liquid rubber-breaking liquid.The present invention realizes the displacement of reservoir oil fracturing fluid and can not only be used for fracturing fluid by the selection of gel breaker again may be used
Pressure break breaking glue solution is set to form oil displacement agent.
Displacement of reservoir oil fracturing fluid of the present invention is applied to transformation to reservoir, when injecting ground by the load fluid of above-mentioned fracturing fluid
After layer, can not the row's of returning fracturing fluid of the invention, under the conditions of ground environment, the effect of the fracturing fluid on indwelling stratum in gel breaker
Lower generation fracturing liquid rubber-breaking liquid, realizes that the displacement of reservoir oil is acted on, i.e., realize that fracturing reform is transformed with the displacement of reservoir oil simultaneously.Displacement of reservoir oil pressure break of the invention
Liquid, is particularly well-suited to be transformed with the large volume of fine and close oil, the unconventional reservoir that shale gas are representative, as described above when using pressure
When splitting technology and volume is carried out to such unconventional reservoir transform, a large amount of fracturing fluids are detained fracture network space and fracture faces, return
Row lead it is low, when using displacement of reservoir oil fracturing fluid of the invention when, fracturing fluid need not the row of returning, and simultaneously realize improve pressure after volume increase effect
Really, reservoir development degree is improved.Therefore, the application the invention provides described displacement of reservoir oil fracturing fluid in reservoir hydrocarbons are exploited,
The application for the displacement of reservoir oil fracturing fluid is carried out into fracturing reform to reservoir as fracturing fluid first, the then not row of returning, directly general
Breaking glue solution after the fracturing liquid rubber-breaking carries out the displacement of reservoir oil as oil displacement agent to reservoir.Especially to fine and close oil reservoir, shale gas reservoir.
When using displacement of reservoir oil fracturing fluid of the invention, proportioning mixing and stirring can will be pressed in described displacement of reservoir oil fracturing fluid,
And after the sandstone needed for adding, inject stratum.Specifically, the method for preparing the displacement of reservoir oil fracturing fluid may include following steps：Choosing
Selecting property prepares the hydrophobic associated polymer aqueous solution；Surfactant is added to the water or the hydrophobic associated polymer aqueous solution
In, gel breaker is added, stir.More specifically, wherein, the preparation of the described hydrophobic associated polymer aqueous solution can be by as follows
Method：Hydrophobic associated polymer is uniformly dispersed in water by proportioning under normal temperature, temperature is stirring under the conditions of 10~30 DEG C, will
Hydrophobic associated polymer stands in temperature is room temperature (20~30 DEG C) or water-bath.
In sum, the invention provides a kind of displacement of reservoir oil fracturing fluid and preparation method and application, the table that the present invention is used
Face activating agent can form micella in water, and the fracturing fluid system of formation has preferable viscoplasticity, gather when using hydrophobic association
During compound, system viscosity can be further enhanced, this displacement of reservoir oil fracturing fluid disclosure satisfy that make in fracturing process seam take the performance of sand will
Ask, a large amount of unimolecule surfactants are contained in concurrent fracturing liquid breaking glue solution so that breaking glue solution has surface-active higher, tool
There is oil displacement efficiency, without the row of returning, both solved current fracturing fluid recovery (backflow) rate, the technical problem of the row's of returning hardly possible, realize again good
Oil displacement efficiency, with important actual application value.
Brief description of the drawings
Fig. 1 is the temperature and shearing sustainability test result figure of the displacement of reservoir oil fracturing fluid that embodiment 1 is prepared.
Fig. 2 is the temperature and shearing sustainability test result figure of the displacement of reservoir oil fracturing fluid that embodiment 3 is prepared.
Fig. 3 is the temperature and shearing sustainability test result figure of the displacement of reservoir oil fracturing fluid that comparative example 1 is prepared.
Fig. 4 is the oil displacement efficiency figure of the breaking glue solution of the displacement of reservoir oil fracturing fluid that embodiment 4 is prepared.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and beneficial effect, in conjunction with instantiation
Technical scheme is carried out described further below, it should be understood that these examples are merely to illustrate the present invention rather than limitation
The scope of the present invention.
Embodiment 1
The present embodiment provides a kind of displacement of reservoir oil fracturing fluid, is counted with its gross weight as 100%, and it includes：6% octadecyl two
Ethoxy amine oxide, 0.1% methylene two how the water of sodium sulfonate and surplus.
The displacement of reservoir oil fracturing fluid of the present embodiment can be prepared as follows：According to the above ratio by octadecyl two under room temperature condition
Ethoxy amine oxide is added to the water, and 4min is stirred under room temperature condition, be then added thereto to methylene two how sodium sulfonate gel breaker,
Can obtain displacement of reservoir oil fracturing fluid.
Crush properties test is carried out to the displacement of reservoir oil fracturing fluid that embodiment 1 is prepared：Using RS6000 rheometer test sheets
The temperature and shearing sustainability of the displacement of reservoir oil fracturing fluid of embodiment, test temperature is 90 DEG C, and shear rate is 170s-1Condition down cut
103 minutes, shown in its result such as Fig. 1 (Eta represents viscosity in figure).As can be seen from Figure 1 the displacement of reservoir oil that embodiment 1 is prepared
Fracturing fluid viscosity can be maintained at more than 100mPas, there is preferable temperature and shearing sustainability.
Embodiment 2
The present embodiment provides a kind of displacement of reservoir oil fracturing fluid, is counted with its gross weight as 100%, and it includes：3.2% dodecyl
Dihydroxy ethyl glycine betaine, 0.1% GRF-1H (HMPAM, Sichuan Guangya Polymer Chemical Co., Ltd.), 0.15% methylene
The water of sodium dinaphthalenesulfonate and surplus.
The displacement of reservoir oil fracturing fluid of the present embodiment can be prepared as follows：GRF-1H is uniformly dispersed in by proportioning under normal temperature
In water, after stirring 15min under the conditions of being 25 DEG C in temperature, GRF-1H solution is stood into 4h in temperature is 30 DEG C of water-baths；By than
Be added to dodecyl dihydroxy ethyl glycine betaine in GRF-1H solution (HMPAM solution) by example, is then proportionally added into gel breaker
Sodium metnylene bis-naphthalene sulfonate, you can obtain displacement of reservoir oil fracturing fluid.
According to SY/T5107-2005《Aqueous fracturing fluid method of evaluating performance》The displacement of reservoir oil that examination criteria is provided the present embodiment
Fracturing fluid property carries out detecting fracturing fluid temperature and shearing sustainability that mini-frac liquid is in temperature for 100 DEG C of viscosity conservation rates are
95.8%.
Embodiment 3
The present embodiment provides a kind of displacement of reservoir oil fracturing fluid, is counted with its gross weight as 100%, and it includes：2.5% dodecyl
Dihydroxy ethyl glycine betaine, 0.4% GRF-1H (HMPAM, Sichuan Guangya Polymer Chemical Co., Ltd.), 0.18% ethylene glycol
The water of monobutyl ether and surplus.
The displacement of reservoir oil fracturing fluid of the present embodiment can be prepared as follows：GRF-1H is uniformly dispersed in by proportioning under normal temperature
In water, after stirring 15min under the conditions of being 25 DEG C in temperature, GRF-1H solution is stood into 4h in temperature is 30 DEG C of water-baths；By than
Be added to dodecyl dihydroxy ethyl glycine betaine in GRF-1H solution in (HMPAM solution, hydrophobic association Polymer Solution) by example,
Then it is proportionally added into gel breaker ethylene glycol monobutyl ether, you can obtain displacement of reservoir oil fracturing fluid.
Crush properties test is carried out to the displacement of reservoir oil fracturing fluid that embodiment 3 is prepared：Using RS6000 rheometer test sheets
The temperature and shearing sustainability of the displacement of reservoir oil fracturing fluid of embodiment, test temperature is 90 DEG C, and shear rate is 170s-1Condition down cut 90
Minute, its result is as shown in Figure 2.As can be seen from Figure 2 the displacement of reservoir oil fracturing fluid viscosity that embodiment 3 is prepared can be maintained at
More than 80mPas, with preferable temperature and shearing sustainability.
Comparative example 1
This comparative example 1 provides a kind of displacement of reservoir oil fracturing fluid, is counted with its gross weight as 100%, and it includes：3.2% dodecane
Base dihydroxy ethyl glycine betaine, 0.1% GRF-1H (HMPAM, Sichuan Guangya Polymer Chemical Co., Ltd.), 0.15% over cure
The water of sour ammonium and surplus.
The displacement of reservoir oil fracturing fluid of the present embodiment can be prepared as follows：GRF-1H is uniformly dispersed in by proportioning under normal temperature
In water, after stirring 15min under the conditions of being 25 DEG C in temperature, GRF-1H solution is stood into 4h in temperature is 30 DEG C of water-baths；By than
Be added to dodecyl dihydroxy ethyl glycine betaine in GRF-1H solution (HMPAM solution) by example, is then proportionally added into gel breaker
Ammonium persulfate, you can obtain displacement of reservoir oil fracturing fluid.
The displacement of reservoir oil fracturing fluid that comparative example 1 is prepared carries out crush properties test：Using this reality of RS6000 rheometer tests
The temperature and shearing sustainability of the displacement of reservoir oil fracturing fluid of example is applied, test temperature is 90 DEG C, and shear rate is 170s-190 points of condition down cut
Clock, its result is as shown in Figure 2.As can be seen from Figure 3 the displacement of reservoir oil fracturing fluid viscosity that comparative example 1 is prepared can only be maintained at
More than 50mPas.
Embodiment 4
Fracturing liquid rubber-breaking liquid in embodiment 3 is carried out into flood pot test, specific experiment method is as follows：
(1) rock core is first carried out into saturated process (oil-containing water distribution under simulation stratum condition) with water, oil respectively；
(2) nuclear magnetic resonance moveable oil method of testing test oil and water zonation state；
(3) water drive replaces saturated core, calculates water drive oil recovery percent of reserves；
(4) nuclear magnetic resonance moveable oil method of testing test oil and water zonation state；
(5) displacement of reservoir oil fracturing liquid rubber-breaking liquid displacement, calculates recovery percent of reserves；
(6) oil and water zonation state in nuclear magnetic resonance moveable oil method of testing testing rock core.
Wherein, nuclear magnetic resonance moveable oil method of testing test oil and water zonation figure is shown in Fig. 4 (237.1# is core numbers in figure)；
It is as shown in table 1 that artificial core parameter, water drive oil recovery percent of reserves and fracturing liquid rubber-breaking liquid drive recovery percent of reserves：
Table 1
Be can be seen that from table 1 and Fig. 4 and add displacement of reservoir oil fracturing liquid rubber-breaking liquid to be different from conventional water, saturation has been reached in water
While oil displacement efficiency, the crude oil that displacement of reservoir oil fracturing liquid rubber-breaking liquid can further inside displacement rock core is further injected into, compare light water
With more surface-active, can further improve oil displacement efficiency and reach 48.86%, 12.08%, tool are higher by than the recovery percent of reserves of water
There is the significant displacement of reservoir oil to sweep the effect of oil.
Embodiment 5
According to SY/T5107-2005《Aqueous fracturing fluid method of evaluating performance》Examination criteria is to the present embodiment 1~3 and contrast
The fracturing liquid rubber-breaking liquid of example 1 carries out surface and interface tension test, is contrasted using and with water, conventional surfactants oil displacement agent,
Its result is as shown in table 2：
Table 2
Existing research thinks that the working solution in reservoir is conducive to reservoir pore space and fracture spaces in low surface and interface tension force
The oil gas of middle preservation output from reservoir, this performance can improve the rate of oil and gas recovery, from Table 2, it can be seen that displacement of reservoir oil fracturing fluid
While system has same thickening sand carrying effect with conventional guar gum fracturing fluid, breaking glue solution has than conventional fracturing liquid rubber-breaking liquid
The obvious effect for reducing oil water interfacial tension, in addition compared to conventional oil field sodium cetanesulfonate displacement of reservoir oil agent solution and
Neopelex displacement of reservoir oil agent solution, 3 kinds of displacement of reservoir oil fracturing liquid rubber-breaking liquid of formula similarly have strong reduction profit circle
The effect of face tension force, low interfacial tension is conducive to profit output, improves recovery ratio.
Embodiment 6
The system of embodiment 3 is in TulufanHami oil field, Xinjiang Oilfield and Changqing oilfields densification oil reservoir transformation 6 wells of scene application
It is secondary, preferable correctional effect is achieved, more than 2 times, wherein the system is applied to tell Kazakhstan LuXJing (fine and close oil stimulation ratio
Well) extensive horizontal well volume renovation technique, well reservoir permeability 0.5mD, without yield before pressure, by the transformation of horizontal well volume
Afterwards, day oil-producing 64.8t after pressure；Relatively increase by 7~10 times using the well average product that faces of conventional fracturing technology and fracturing fluid technology.Say
The effect of increasing production that bright fracturing fluid has had.
Claims (14)
1. a kind of displacement of reservoir oil fracturing fluid, is counted with its gross weight as 100%, and it includes：
0.3~10% surfactant；
0~0.5% hydrophobic associated polymer；
0.1~0.2% gel breaker；
And the water of surplus；
Described surfactant is selected from oxidation amine surfactants and/or betaines surfactant；
Described gel breaker is selected from ethylene glycol monobutyl ether and/or sodium metnylene bis-naphthalene sulfonate.
2. displacement of reservoir oil fracturing fluid according to claim 1, wherein, counted as 100% with described displacement of reservoir oil fracturing fluid gross weight, institute
The weight of the surfactant stated is 0.5~7%.
3. displacement of reservoir oil fracturing fluid according to claim 1, wherein, described oxidation amine surfactant structure is
Wherein, R1、R2、R3It is independently each alkyl or CH3(CH2)m- C (=O)-NH- (CH2)n-, the alkyl refer to straight chain or
The saturated aliphatic hydrocarbons group of side chain, its main chain includes 1 to 30 carbon atom, and preferably 10 to 30 carbon atoms are further excellent
Elect 18 to 24 carbon atoms as；
The alkyl can be substituted or unsubstituted, and when substituted, substitution base can be in any usable tie point
It is upper substituted, the preferred alkyl of substitution base, cycloalkyl, alkoxy, aryl, heteroaryl, heterocyclic radical, hydroxyl, amino；
Described m, n is independently each the integer between 1~30；Preferably m is the integer between 10~30, n be 1~10 it
Between integer；More preferably m is the integer between 18~24, and n is the integer between 1~5.
4. displacement of reservoir oil fracturing fluid according to claim 2, wherein, described oxidation amine surfactants include alkyl oxidation
Amine and/or alkylamide propyl amine oxide.
5. displacement of reservoir oil fracturing fluid according to claim 4, wherein, described oxidation amine surfactants are selected from octadecyl
Dihydroxy ethyl amine oxide, myristyl dihydroxy ethyl amine oxide, dodecyl dihydroxy ethyl amine oxide and dodecanamide propyl oxygen
Change one or more in amine.
6. displacement of reservoir oil fracturing fluid according to claim 1, wherein, described betaines surfactant is hydrophobicity long-chain
Contain the class amphoteric surfactant for being ionized into cation and anion in one end of molecule；Wherein, described cation is
Quaternary ammonium salt, described anion is one or more in carboxyl, sulfonic group or phosphate.
7. displacement of reservoir oil fracturing fluid according to claim 6, wherein, the betaines surfactant is alkyl betaines bases
Surfactant, the hydrophobicity long-chain molecule in the alkyl betaines bases surfactant is chain alkyl, described alkane long
The main chain of base is 10 to 30 carbon atoms, preferably 18 to 24 carbon atoms.
8. displacement of reservoir oil fracturing fluid according to claim 7, wherein, described alkyl betaines bases surfactant is selected from 18
Alkyldihydxyethyl betaines and/or dodecyl dihydroxy ethyl glycine betaine.
9. displacement of reservoir oil fracturing fluid according to claim 6, wherein, described betaines surfactant is alkylamidoalkyl
Alkyl betaine surfactant, the hydrophobicity long-chain molecule in the alkyl amidoalkyl betaines surfactant is CH3
(CH2)m- C (=O)-NH- (CH2)n-, m is the integer between 10~30, and n is the integer between 1~10；It is preferred that m is 18~24
Between integer, n is the integer between 1~5.
10. displacement of reservoir oil fracturing fluid according to claim 9, wherein, described alkyl amidoalkyl betaines surface-active
Agent is selected from Cocoamidopropyl betaine and/or lauroyl amido CAB.
11. displacement of reservoir oil fracturing fluids according to claim 1, wherein, described hydrophobic associated polymer is hydrophobic polypropylene
Acid amides, it is preferable that the viscosity average molecular weigh 5000~5000000 of described hydrophobic associated polymer.
The preparation method of the displacement of reservoir oil fracturing fluid any one of 12. claims 1~11, methods described comprises the following steps：
Selective prepares the hydrophobic associated polymer aqueous solution；The hydrophobic associated polymer that surfactant is added to the water or prepared
In the aqueous solution, gel breaker is added to obtain the displacement of reservoir oil fracturing fluid.
The application of displacement of reservoir oil fracturing fluid any one of 13. claims 1~11 in reservoir hydrocarbons are exploited, the application is
The displacement of reservoir oil fracturing fluid is carried out into fracturing reform as fracturing fluid to reservoir first, then the not row of returning, directly break the fracturing fluid
Breaking glue solution after glue carries out the displacement of reservoir oil as oil displacement agent to reservoir.
14. applications according to claim 13, wherein, described reservoir is fine and close oil reservoir or shale gas reservoir.
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| CN109207134A (en) * | 2018-10-23 | 2019-01-15 | 天津大港油田滨港集团博弘石油化工有限公司 | Efficient surfactant oil displacement composition and preparation method thereof |
| CN109337663A (en) * | 2018-11-19 | 2019-02-15 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Low permeability reservoir continuous mixed displacement of reservoir oil type fracturing fluid and its preparation method and application |
| CN110093147A (en) * | 2018-01-29 | 2019-08-06 | 中国石油化工股份有限公司 | A kind of low molecule shale expansion-resisting agent and preparation method thereof |
| CN110791277A (en) * | 2019-11-14 | 2020-02-14 | 西安石油大学 | Fracturing fluid capable of being converted into oil displacement agent without flowback for oil field and preparation method thereof |
| CN110819331A (en) * | 2019-11-19 | 2020-02-21 | 西安石油大学 | Intelligent oil displacement agent capable of identifying oil and water and preparation method thereof |
| CN111548782A (en) * | 2020-04-30 | 2020-08-18 | 长江大学 | Nano-enhanced supermolecule clean fracturing fluid and preparation method thereof |
| CN111944508A (en) * | 2020-09-09 | 2020-11-17 | 中国石油天然气集团有限公司 | Emulsification viscosity-reduction oil-displacing agent, preparation method thereof and viscous oil viscosity-reduction oil-displacement fracturing method |
| CN112500318A (en) * | 2021-02-02 | 2021-03-16 | 东营宝莫环境工程有限公司 | Synthetic method of surfactant with oil displacement, thick oil viscosity reduction and foaming performances |
| CN114196390A (en) * | 2020-09-17 | 2022-03-18 | 中国石油天然气股份有限公司 | Composite oil displacement fracturing fluid and preparation method and application thereof |
| CN114410285A (en) * | 2022-01-12 | 2022-04-29 | 中海油田服务股份有限公司 | Oil-displacing agent containing viscoelastic surfactant and method for recycling oil field produced liquid |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110093147A (en) * | 2018-01-29 | 2019-08-06 | 中国石油化工股份有限公司 | A kind of low molecule shale expansion-resisting agent and preparation method thereof |
| CN109207134A (en) * | 2018-10-23 | 2019-01-15 | 天津大港油田滨港集团博弘石油化工有限公司 | Efficient surfactant oil displacement composition and preparation method thereof |
| CN109207134B (en) * | 2018-10-23 | 2021-02-19 | 天津大港油田滨港集团博弘石油化工有限公司 | Surfactant composition for efficient oil displacement and preparation method thereof |
| CN109337663A (en) * | 2018-11-19 | 2019-02-15 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Low permeability reservoir continuous mixed displacement of reservoir oil type fracturing fluid and its preparation method and application |
| CN110791277A (en) * | 2019-11-14 | 2020-02-14 | 西安石油大学 | Fracturing fluid capable of being converted into oil displacement agent without flowback for oil field and preparation method thereof |
| CN110819331A (en) * | 2019-11-19 | 2020-02-21 | 西安石油大学 | Intelligent oil displacement agent capable of identifying oil and water and preparation method thereof |
| CN111548782B (en) * | 2020-04-30 | 2023-01-24 | 长江大学 | Nano-enhanced supermolecule clean fracturing fluid and preparation method thereof |
| CN111548782A (en) * | 2020-04-30 | 2020-08-18 | 长江大学 | Nano-enhanced supermolecule clean fracturing fluid and preparation method thereof |
| CN111944508A (en) * | 2020-09-09 | 2020-11-17 | 中国石油天然气集团有限公司 | Emulsification viscosity-reduction oil-displacing agent, preparation method thereof and viscous oil viscosity-reduction oil-displacement fracturing method |
| CN114196390A (en) * | 2020-09-17 | 2022-03-18 | 中国石油天然气股份有限公司 | Composite oil displacement fracturing fluid and preparation method and application thereof |
| CN112500318A (en) * | 2021-02-02 | 2021-03-16 | 东营宝莫环境工程有限公司 | Synthetic method of surfactant with oil displacement, thick oil viscosity reduction and foaming performances |
| CN114410285A (en) * | 2022-01-12 | 2022-04-29 | 中海油田服务股份有限公司 | Oil-displacing agent containing viscoelastic surfactant and method for recycling oil field produced liquid |
| CN114410285B (en) * | 2022-01-12 | 2023-11-24 | 中海油田服务股份有限公司 | Oil displacement agent containing viscoelastic surfactant and recycling method of oil field produced liquid |
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