CN109486478A - Shale gas pressure break multi-functional friction reducer and preparation method thereof - Google Patents
Shale gas pressure break multi-functional friction reducer and preparation method thereof Download PDFInfo
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- CN109486478A CN109486478A CN201710848670.2A CN201710848670A CN109486478A CN 109486478 A CN109486478 A CN 109486478A CN 201710848670 A CN201710848670 A CN 201710848670A CN 109486478 A CN109486478 A CN 109486478A
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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
- C09K8/60—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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/32—Polymerisation in water-in-oil emulsions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—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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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
- C08F220/585—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine and containing other heteroatoms, e.g. 2-acrylamido-2-methylpropane sulfonic acid [AMPS]
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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Abstract
The invention discloses a kind of shale gas pressure break multi-functional friction reducer and preparation method thereof, suitable for the fracturing fluid of shale gas pressure break, the wherein molecular formula of friction reducer are as follows:
Description
Technical field
The present invention relates to a kind of fracturing fluid friction reducer and preparation method thereof, suitable for the fracturing fluid of shale gas pressure break, belong to
Oil field fracturing technical field.
Background technique
According to the difference of gas bearing shale content of mineral substances, the fracturing fluid that shale gas well fracturing uses mainly have nitrogen foam,
Gel and aqueous fracturing fluid.Aqueous fracturing fluid can save 30% cost under the premise of the not underproduction, cause in many hyposmosis
Close gas, shale gas obtain good effect in bed gas reservoir reservoir reconstruction.The higher shale of carbonate content generally selects water base
Fracturing fluid, the higher shale selection aqueous fracturing fluid of clay content and gel mix pressure break mode.Shale gas reservoir characteristics are different,
Its fracturing fluid selected is also different: the aqueous fracturing fluid of brittleness shale fracturing fluid selection low viscosity；The medium shale of brittleness is selected
Composite fracturing fluid, i.e. drop block water compound with linear glue or crosslinked fracturing fluid；Plastic shale selects highly viscous crosslinked fracturing fluid.Line
Property fracturing fluid, the problems such as crosslinked fracturing fluid is all high, larger to formation damage there is level of residue, there are costs for foam fracturing fluid
The problems such as high and construction safety.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of fracturing fluid friction reducer and preparation method thereof, is suitable for shale air pressure
The fracturing fluid split, main purpose are the injuries reduced to stratum.
In order to achieve the above objectives, present invention generally provides following technical solutions:
On the one hand, the embodiment of the invention provides a kind of shale gas pressure break friction reducer, molecular formula are as follows:
Wherein, X, Y, Z are integer, and m is the integer of 3-6, and n is the integer of 2-4.
It is formed preferably, the friction reducer combines progress reverse emulsion polymerization by water phase and oil, it is wherein each in water phase
The parts by weight of monomer and water are as follows: 0.7-1.3 parts of acrylamide, 0.7-1.5 parts of 2- acrylamide-2-methyl propane sulfonic, 1 part of water；
The parts by weight of each monomer and oil in oily phase are as follows: 0.1:-0.30 parts of perfluoropropene acid, 0.1-0.3 parts of Tween 80, OP-
10 0.1-0.3 parts and 1 part of white oil；
The weight of water phase and oily phase are as follows: 1: 0.3-0.8.
On the other hand, the embodiment of the invention provides a kind of preparation method of above-mentioned friction reducer, include the following steps:
Selected acrylamide, 2- acrylamide-2-methyl propane sulfonic, are dissolved in deionized water according to a certain percentage, match
Water phase is made；
Selected perfluorinated acrylate, Tween 80 and white oil carry out proportion according to a certain percentage and form oily phase；
Above-mentioned water phase is mutually matched according to a certain percentage with oily, forms stable water-in-oil inverse emulsion base after being sufficiently mixed
Liquid；
Catalysis initiation is carried out using initiator, finally synthesizes the friction reducer.
On the other hand, the embodiment of the invention provides a kind of fracturing fluids suitable for shale gas pressure break, press matter by following components
Measure percentage composition:
Friction reducer 0.05-0.2%；
Water surplus；
Wherein friction reducer is above-mentioned friction reducer.
Compared with prior art, the beneficial effects of the present invention are:
The friction reducer swelling rate of the embodiment of the present invention is fast, the low 2~30mPa.s of viscosity is adjustable, when concentration is 0.05%, drop
Resistance rate can reach 76.5%, and surface tension is down to 25mN/m hereinafter, to return discharge face tension lower, and there is Recovery and recycle to utilize
Basis.Shale preventive effect of expansion is good, and shale anti-dilative is more than 80%, lower to shale formation injury rate, and only 5.33%.Scene
Using showing that the friction reducer of the embodiment of the present invention can effectively reduce frictional resistance, solid-carrying performance is excellent, can be in shale gas and other are hypotonic
It is promoted and applied in the exploitation of densification oil-gas reservoir thoroughly.Achievable fracturing fluid is prepared, online according to the use of condition of construction adjustment fracturing fluid
Amount reduces waste, reduces pollution.
Specific embodiment
Present invention is further described in detail combined with specific embodiments below, but not as a limitation of the invention.?
In following the description, what different " embodiment " or " embodiment " referred to is not necessarily the same embodiment.In addition, one or more are implemented
Special characteristic, structure or feature in example can be combined by any suitable form.
Embodiment 1
The 2- acrylamide-2-methyl propane sulfonic of the acrylamide of 0.7-1.3 parts by weight, 0.7-1.5 parts by weight is dissolved
In the deionized water of 1 parts by weight, it is configured to water phase；
By the perfluorinated acrylate of 0.1:-0.3 parts by weight, the Tween 80 of 0.1-0.3 parts by weight and 0.1-0.3 parts by weight
OP-10, which is added in the white oil of 1 parts by weight, forms oily phase；
By above-mentioned 1 parts by weight of water phase and oily phase 0.3-0.8 weight, it is anti-that stable Water-In-Oil is formed after being sufficiently mixed
Phase emulsion base fluid；
Catalysis initiation is carried out using initiator, the following friction reducer of final synthetic molecules formula:
In above formula, X, Y, Z are integer, and m is the integer of 3-6, and n is the integer of 2-4.
Initiator is ammonium persulfate.
The friction reducer swelling rate of the embodiment of the present invention is fast, the low 2~30mPa.s of viscosity is adjustable, when concentration is 0.05%, drop
Resistance rate can reach 76.5%, and surface tension is down to 25mN/m hereinafter, to return discharge face tension lower, and there is Recovery and recycle to utilize
Basis.Shale preventive effect of expansion is good, and shale anti-dilative is more than 80%, lower to shale formation injury rate, and only 5.33%.
Embodiment 2
Suitable for the fracturing fluid of shale gas pressure break, the weight percentage of each component is as follows: 0.1% friction reducer, 99.9% water.
Friction reducer is the friction reducer of embodiment 1.
The fracturing fluid of embodiment 2 is tested for the property, as a result see the table below 1.
Table 1
| Project | Index |
| Density (20 DEG C ± 1 DEG C), g/cm3 | 0.98 |
| PH value | 7 |
| 0.1% solution viscosity, mPas at 25 DEG C | 6 |
| Resistance-reducing yield, % | 75.6 |
| 80 DEG C of temperature tolerance, 0.1% solution shear 120min, mPas | 5 |
| Swelling time, min (at 25 DEG C, 0.1% aqueous solution) | 2 |
| Surface tension, | 22.4 |
| Anti-dilative | 87.5 |
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (4)
1. the multi-functional friction reducer of shale gas pressure break, it is characterised in that: its molecular formula are as follows:
Wherein, X, Y, Z are integer, and m is the integer of 3-6, and n is the integer of 2-4.
2. pressure break friction reducer according to claim 1, which is characterized in that the friction reducer by water phase and oil combine into
Row reverse emulsion polymerization forms, wherein in water phase each monomer and water parts by weight are as follows: acrylamide 0.7-1.3,2- acrylamide-
2- methyl propane sulfonic acid 0.7-1.5, water 1；
The parts by weight of each monomer and oil in oily phase are as follows: 0.1-0.3 parts of perfluorinated acrylates, 0.1-0.3 parts of Tween 80,0.1-
0.3 part of OP-10 and 1 part of white oil；
The weight of water phase and oily phase are as follows: 1: 0.3-0.8.
3. the preparation method of friction reducer according to claim 1 or 2, which comprises the steps of:
Selected acrylamide, 2- acrylamide-2-methyl propane sulfonic, are dissolved in deionized water according to a certain percentage, are configured to
Water phase；
Selected perfluorinated acrylate, Tween 80 and white oil carry out proportion according to a certain percentage and form oily phase；
Above-mentioned water phase is mutually matched according to a certain percentage with oily, forms stable water-in-oil inverse emulsion base fluid after being sufficiently mixed；
Catalysis initiation is carried out using initiator, finally synthesizes the friction reducer.
4. being suitable for the fracturing fluid of shale gas pressure break, which is characterized in that be made of by mass percentage following components:
Friction reducer 0.05-0.2%；
Water surplus；
Wherein the friction reducer is friction reducer of any of claims 1 or 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848670.2A CN109486478A (en) | 2017-09-13 | 2017-09-13 | Shale gas pressure break multi-functional friction reducer and preparation method thereof |
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| CN201710848670.2A CN109486478A (en) | 2017-09-13 | 2017-09-13 | Shale gas pressure break multi-functional friction reducer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746536A (en) * | 2019-11-06 | 2020-02-04 | 中国石油集团渤海钻探工程有限公司 | Resistance reducing agent for slickwater and preparation method thereof |
| CN113265023A (en) * | 2021-06-22 | 2021-08-17 | 西南石油大学 | Nano lubricant for drilling fluid and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755868A (en) * | 2013-12-23 | 2014-04-30 | 郑州三山石油技术有限公司 | Resistance reducing agent for fracturing quick water of shale gas and preparation method thereof |
| CN104610492A (en) * | 2014-12-29 | 2015-05-13 | 四川安东油气工程技术服务有限公司 | Resistance reducing agent for fracturing fluid and preparation method thereof, as well as fracturing fluid suitable for shale gas fracturing |
-
2017
- 2017-09-13 CN CN201710848670.2A patent/CN109486478A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755868A (en) * | 2013-12-23 | 2014-04-30 | 郑州三山石油技术有限公司 | Resistance reducing agent for fracturing quick water of shale gas and preparation method thereof |
| CN104610492A (en) * | 2014-12-29 | 2015-05-13 | 四川安东油气工程技术服务有限公司 | Resistance reducing agent for fracturing fluid and preparation method thereof, as well as fracturing fluid suitable for shale gas fracturing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746536A (en) * | 2019-11-06 | 2020-02-04 | 中国石油集团渤海钻探工程有限公司 | Resistance reducing agent for slickwater and preparation method thereof |
| CN110746536B (en) * | 2019-11-06 | 2021-06-08 | 中国石油集团渤海钻探工程有限公司 | Resistance reducing agent for slickwater and preparation method thereof |
| CN113265023A (en) * | 2021-06-22 | 2021-08-17 | 西南石油大学 | Nano lubricant for drilling fluid and preparation method and application thereof |
| CN113265023B (en) * | 2021-06-22 | 2022-03-01 | 西南石油大学 | Nano lubricant for drilling fluid and preparation method and application thereof |
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