CN108822821A - A kind of Paraffin Removal preparation of high-content wax oil well - Google Patents
A kind of Paraffin Removal preparation of high-content wax oil well Download PDFInfo
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- CN108822821A CN108822821A CN201810591744.3A CN201810591744A CN108822821A CN 108822821 A CN108822821 A CN 108822821A CN 201810591744 A CN201810591744 A CN 201810591744A CN 108822821 A CN108822821 A CN 108822821A
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- wax
- paraffin
- oil well
- paraffin removal
- oil
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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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Detergent Compositions (AREA)
Abstract
A kind of Paraffin Removal preparation of high-content wax oil well of the invention, wherein：It by the polyoxyethylene sorbitan trioleate of 5-10wt%, the vinyl-acrylate copolymer of 15-25wt%, 20-30wt% Brij92-11,2-8wt% sodium acetate and remaining form for water.Wherein, the specific gravity of wax removal and wax control preparation is 0.93~1.04, and pH value is 7.1~9.0, and inhibiting rate for wax precipitation is greater than 77%, and viscosity break ratio is greater than 74%, in the case where dosage is 0.05~0.1%, 2~4.5 times of thermal well flushing cycle stretch-out.Paraffin Removal preparation of the invention not only has Paraffin Removal effect for the oil well of paraffin content > 30%, but also has viscosity reduction effect.Do not have corrosivity simultaneously, it is small to oil production equipment corrosivity.
Description
Technical field
The present invention relates to a kind of Paraffin Removal preparations, in particular to a kind of Paraffin Removal preparation of high-content wax oil well.
Background technique
Waxy crude oil, due to the wax deposition of oil well, shows as rod-pumped well uplink load and friction in down stroke in recovery process
Increase, it is disconnected to be easy to cause sucker rod, while energy consumption increasing of recovering the oil.Solution be usually mechanical paraffin cutting, hot oil (water) wax removal,
Chemical Paraffin Removal, electric heating cable Paraffin Removal, magnetic paraffin control, glass coating oil pipe wax control and bacterium wax control etc..These methods all into
Row large area field test.Generally speaking, each Paraffin Removal measure has the characteristics that respective and best applicable elements.Such as
Glass lining (or coating) oil pipe, electric heating cable are relatively suitable for flowing well and high casing pressure oil well；Magnetic paraffin control is low aqueous compared with being suitable for
Oil well, and mechanical paraffin cutting is suitable for different water cut stages, low casing pressure oil well.Most common oil-base paraffin remover works
Fastly, utilization is the most extensive, and raw material sources are wide, but oil-base paraffin remover is not suitable with high-water-cut oil-producing well, is unable to reach after dosing clear
The desired effect of wax control.And the safety of oil-base paraffin remover is poor, and the range that oil-base paraffin remover uses increasingly is restricted.
Currently, oil field Paraffin Removal, mainly based on wax removal, supplemented by wax control, wax control work is relatively weak, wax control skill
Art is to add additive control nucleus into oil well to be formed, and blocks crystal to grow up, wax crystalline substance cannot finally be formed.It can use with
Lower wax-proofing agent：
1, condensed-nuclei aromatics and its derivative species wax-proofing agent
Such wax-proofing agent mainly passes through participation and forms nucleus, to make lattice distortion, is unfavorable for wax crystal continued growth.
2, activating agent class wax-proofing agent
Oil soluble actives are worked by changing wax crystalline substance surface nature, since this kind of activating agent is inhaled on wax crystalline substance surface
It is attached, so that its surface is become polar surfaces by nonpolarity, is unfavorable for wax molecule and further deposits.
3, water-soluble active agent
It is worked by changing the property of wax deposition surface (such as oil pipe, sucker rod), since this kind of activating agent can be inhaled
It is attached to wax deposition surface, it is made to become polarity and has water membrane, is unfavorable for nonpolar wax and deposits on it.
4, polymer electrolyte wax-proofing agent
This is a kind of oil-soluble high-molecular compound with branched structure.These high-molecular compounds shape in crude oil
At network structure, and paraffin is just distributed on the net, and is separated from each other, and cannot mutually phase coalescence be grown up, is also not susceptible in metal surface
Deposition, is easily taken away by oil stream.Well wax clearing agent for oil and wax-proofing agent are many kinds of, but can play the role of wax removal again without a kind of reagent
It can play the role of wax control.
Summary of the invention
It is an object of the invention to solve the problems, such as existing wax-proofing agent and paraffin remover can only single use, and provide one kind
It not only can be with wax control but also can be with the preparation of wax removal.The present invention uses following technical scheme：
A kind of Paraffin Removal preparation of high-content wax oil well of the invention, wherein：It by 5-10wt% polyoxyethylene sorbitol
Alcohol acid anhydride trioleate, the vinyl-acrylate copolymer of 15-25wt%, 20-30wt% Brij92-11,2-
The sodium acetate of 8wt% is water composition with remaining.Wherein, the specific gravity of wax removal and wax control preparation be 0.93~1.04, pH value be 7.1~
9.0, inhibiting rate for wax precipitation is greater than 77%, and viscosity break ratio is greater than 74%, and in the case where dosage is 0.05~0.1%, the thermal well flushing period prolongs
It is 2~4.5 times long.
The Paraffin Removal preparation of the high-content wax oil well, wherein：It by 8wt% three oleic acid of polyoxyethylene sorbitol acid anhydride
Ester, the vinyl-acrylate copolymer of 20wt%, 25wt% Brij92-11,5wt% sodium acetate and 42wt%
Water composition.
Wherein acrylate content is 30% or so to above-mentioned vinyl-acrylate copolymer, to high wax content oil wax control
Effect is good.
Paraffin Removal preparation for high-content wax oil well of the invention has following compared with existing paraffin remover and wax-proofing agent
Advantage：
(1) using safe, in use without burning and a possibility that explosion.
(2) specific gravity is generally higher than 0.93, can be added from casing to high-content wax oil well and be easy to be sunken to shaft bottom, play wax removal
It is acted on wax control, serious hot washing period.
(3) for the oil well of paraffin content > 30%, not only there is Paraffin Removal effect, but also there is viscosity reduction effect.
(4) wax removal and wax-proofing agent do not have corrosivity, small to oil production equipment corrosivity.
Specific embodiment
Embodiment 1：
A kind of Paraffin Removal preparation for high-content wax oil well of the invention, it by 5% polyoxyethylene sorbitol acid anhydride three
Oleate, 15% vinyl-acrylate copolymer, 20% Brij92-11,2% sodium acetate and 58% water group
At.The Paraffin Removal preparation performance indicator that the present invention makes is：
1, specific gravity：0.93；
2, pH value：7.8；
3, inhibiting rate for wax precipitation：82%；
4, viscosity break ratio：80%；
5, hot washing period：Hot washing period extends 3 times.
Embodiment 2：
A kind of Paraffin Removal preparation for high-content wax oil well of the invention, it by 8% polyoxyethylene sorbitol acid anhydride three
Oleate, 20% vinyl-acrylate copolymer, 25% Brij92-11,5% sodium acetate and 42% water
Composition.The Paraffin Removal preparation performance indicator that the present invention makes is：
1, specific gravity：0.95；
2, pH value：8.5；
3, inhibiting rate for wax precipitation：85%；
4, viscosity break ratio：81%；
5, hot washing period：Hot washing period extends 4 times.
Above embodiment is only that preferred embodiments of the present invention will be described, is not carried out to the scope of the present invention
It limits, without departing from the spirit of the design of the present invention, this field ordinary engineering and technical personnel is to technical solution of the present invention
The various changes and improvements made, should fall within the scope of protection determined by the claims of the present invention.
Claims (2)
1. a kind of Paraffin Removal preparation of high-content wax oil well, wherein：It by 5-10wt% three oleic acid of polyoxyethylene sorbitol acid anhydride
Ester, the vinyl-acrylate copolymer of 15-25wt%, 20-30wt% Brij92-11,2-8wt% sodium acetate
It is water composition with remaining.
2. the Paraffin Removal preparation of high-content wax oil well according to claim 1, wherein：It by 8wt% polyoxyethylene
The second of sugar alcohol acid anhydride trioleate, the vinyl-acrylate copolymer of 20wt%, 25wt% Brij92-11,5wt%
Sour sodium and 42wt% water composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591744.3A CN108822821A (en) | 2018-06-08 | 2018-06-08 | A kind of Paraffin Removal preparation of high-content wax oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810591744.3A CN108822821A (en) | 2018-06-08 | 2018-06-08 | A kind of Paraffin Removal preparation of high-content wax oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108822821A true CN108822821A (en) | 2018-11-16 |
Family
ID=64143669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810591744.3A Withdrawn CN108822821A (en) | 2018-06-08 | 2018-06-08 | A kind of Paraffin Removal preparation of high-content wax oil well |
Country Status (1)
| Country | Link |
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| CN (1) | CN108822821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117106168A (en) * | 2023-10-24 | 2023-11-24 | 德仕能源科技集团股份有限公司 | Oil-based paraffin remover for high-wax-content crude oil and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358833A (en) * | 2011-08-30 | 2012-02-22 | 北京恩瑞达科技有限公司 | Paraffin removing and resisting agent for oil well |
-
2018
- 2018-06-08 CN CN201810591744.3A patent/CN108822821A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358833A (en) * | 2011-08-30 | 2012-02-22 | 北京恩瑞达科技有限公司 | Paraffin removing and resisting agent for oil well |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117106168A (en) * | 2023-10-24 | 2023-11-24 | 德仕能源科技集团股份有限公司 | Oil-based paraffin remover for high-wax-content crude oil and preparation method thereof |
| CN117106168B (en) * | 2023-10-24 | 2024-01-16 | 德仕能源科技集团股份有限公司 | Oil-based paraffin remover for high-wax-content crude oil and preparation method thereof |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20181116 |