CN102358833A - Paraffin removing and resisting agent for oil well - Google Patents
Paraffin removing and resisting agent for oil well Download PDFInfo
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- CN102358833A CN102358833A CN2011102527491A CN201110252749A CN102358833A CN 102358833 A CN102358833 A CN 102358833A CN 2011102527491 A CN2011102527491 A CN 2011102527491A CN 201110252749 A CN201110252749 A CN 201110252749A CN 102358833 A CN102358833 A CN 102358833A
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Abstract
The invention relates to paraffin removing and resisting agent for an oil well, which is composed of 5 to 15% of polyoxyethylenesorbitololeate, 15 to 25% of polyoxyethyleneoctadecylamine-8, 20 to 30% of polyoxyethyleneoleylether-11, 35 to 45% of water and 2 to 8% sodium acetate. The paraffin removing and resisting agent has no possibility of burning and explosion, is generally larger than 0.93 in specific gravity, can be added into a high water content oil well from a sleeve, is easy to sink to the well bottom, and can remove and resist paraffin. The paraffin removing and resisting agent not only can remove and resist the paraffin, but also can reduce viscosity. The paraffin removing and resisting agent has no corrosion performance, is small in corrosion on oil extraction equipment, lower than -30 DEG C in condensation point and suitable for being used in cold seasons, and can simplify chemicals adding procedures.
Description
Technical field
The present invention relates to a kind of wax removal and wax control preparation, particularly related to a kind of wax removal and wax control preparation that is used for oil well.
Background technology
The immanent cause of oil well paraffinication is the crude oil content of wax, and wax content is many more, and wax deposition is just serious more.Under reservoir condition, because medium temperature is high, wax is dissolved in the crude oil, when crude oil flows into the shaft bottom from oil reservoir, rises to the process of well head from the shaft bottom again, because the reduction of pressure and temp, the solubleness of wax in crude oil reduces and separates out.Strictly speaking, wax is meant carbon number than higher normal paraffin, usually greater than C
16Normal paraffin be called wax.Paraffin then is the mixture of various positive structure long-chain n-praaffins; Ceresine is meant isoparaffin or has cycloalkanes and the long chain alkane of aromatic hydrocarbons.In fact want complicated many at wax that oil wells in field ran into, people often those and normal paraffin mix contain higher hydrocarbons, bituminous matter, colloid, silt, iron rust, greasy filth, etc. black semi-solid state and solid matter be referred to as wax.
The oil well paraffinication meeting influences ordinary production, so control and remove of well paraffin also is the problem that needs solution in recovering the oil.
Anti-wax technique is in oil well, to add additive to reach the purpose of wax control clearly.Wax control mechanism: the wax deposition process mainly is the crystalline process of growth, if can control the article karyomorphism, just can block crystal and grow up, and the wax crystalline substance finally can not form.It can adopt following paraffin inhibitor chemical:
1, condensed-nuclei aromatics and derivatives class paraffin inhibitor chemical thereof
Such paraffin inhibitor chemical mainly forms nucleus through participating in, thereby makes the character distortion, is unfavorable for the wax crystal continued growth.
2, promoting agent class paraffin inhibitor chemical
The oil soluble promoting agent is to work through changing the brilliant surface properties of wax, because this type promoting agent is in the brilliant surface adsorption of wax, the surface that makes it is unfavorable for that by the nonpolar polar surfaces that becomes the wax molecule further deposits.
3, water-soluble active agent
It is to work through the character that changes wax deposition surface (like oil pipe, sucker rod), because this type promoting agent can be adsorbed on the wax deposition surface, makes it become polarity and water membrane is arranged, and is unfavorable for that nonpolar wax deposits above that.
4, polymer paraffin inhibitor chemical
This is one type of oil-soluble macromolecular compound with branched structure.These macromolecular compounds form network structure in crude oil, and paraffin just distributes on the net, and separated from one another, and coalescence is grown up mutually, also are not easy to the deposition in the metallic surface, are prone to taken away by oil stream.
Wax removal mechanism is that the oil base paraffin remover is the flux of wax, and they can dissolve the wax that crystallization is separated out.Traditional paraffin remover such as diesel oil, kerosene, gasoline, benzene, toluene etc.Though originally the more chloroform of usefulness, tetracol phenixin etc. have excellent wax removal ability, make in the crude oil and stop using gradually at crude oil process segment heavy corrosion processing units owing to remain in.In order to improve the wax removal ability, can adopt oil base paraffin remover and water base paraffin remover, water base paraffin remover is to be dispersion medium with water, wherein is dissolved with promoting agent, mutual solvent and alkaline matter.It is hydrophilic that promoting agent makes that mainly the wax deposition surface transfers to, helps coming off of wax; Mutual solvent mainly is to strengthen wax solubleness in water, is generally alcohol and alcohol ether; The effect of alkali be with wax in the blue or green matter isopolarity substance reaction that dries up, product should be to be scattered in water, short paraffin dissolving.
Summary of the invention
The objective of the invention is to solve the problem that existing paraffin inhibitor chemical and paraffin remover can only single uses, and provide a kind of both can wax control can wax removal preparation.
In order to accomplish the application's goal of the invention, the present invention adopts following technical scheme:
A kind of wax removal and wax control preparation that is used for oil well of the present invention, wherein: it is made up of the polyoxyethylene sorbitol oleic acid ester of 5-15%, T 46155 octadecane amine-8,20-30% Brij92-11, the water of 35-45% and the sodium acetate of 2-8% of 15-25%;
A kind of wax removal and wax control preparation that is used for oil well of the present invention, wherein: it is made up of 10% polyoxyethylene sorbitol oleic acid ester, 20% T 46155 octadecane amine-8,25% Brij92-11,40% water and 5% sodium acetate;
A kind of wax removal and wax control preparation that is used for oil well of the present invention, wherein: the proportion of wax removal and wax control preparation is 0.93～1.04; The pH value is 7.1～9.0; Inhibiting rate for wax precipitation is greater than 77%; Viscosity break ratio is greater than 74%.
The wax removal that is used for oil well of the present invention is compared with paraffin inhibitor chemical with existing paraffin remover with the wax control preparation, has the following advantages:
1, possibility safe in utilization, as in use not have burning and explode.
2, proportion can and be easy to be sunken to the shaft bottom generally greater than 0.93 from the sleeve pipe adding to the high water-content crude oil well, plays wax removal and wax control effect.
3, not only have wax control effect clearly, but also have the viscosity reduction effect.
4, wax removal and paraffin inhibitor chemical do not have corrodibility, so little to oil production equipment corrodibility.
5, condensation point is lower than-30 ℃, and use suitable cold season.
6, simplify medicament and add operation.
Embodiment:
A kind of wax removal and wax control preparation that is used for oil well of the present invention, it is preferably 10% by the polyoxyethylene sorbitol oleic acid ester of 5-15%; The T 46155 octadecane amine-8 of 15-25% is preferably 20%; 20-30% Brij92-11, best 25%; The water of 35-45%, be preferably 30% with the sodium acetate of 2-8%, be preferably 5% and form.
Preparation performance index of the present invention are:
1, proportion: 0.93～1.04;
2, pH value: 7.1～9.0;
3, inhibiting rate for wax precipitation:＞77%;
4, viscosity break ratio:＞74%.
Above embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. a wax removal and wax control preparation that is used for oil well, it is characterized in that: it is made up of the polyoxyethylene sorbitol oleic acid ester of 5-15%, T 46155 octadecane amine-8,20-30% Brij92-11, the water of 35-45% and the sodium acetate of 2-8% of 15-25%.
2. wax removal as claimed in claim 1 and wax control preparation is characterized in that: it is made up of 10% polyoxyethylene sorbitol oleic acid ester, 20% T 46155 octadecane amine-8,25% Brij92-11,40% water and 5% sodium acetate.
3. according to claim 1 or claim 2 wax removal and wax control preparation, it is characterized in that: the proportion of wax removal and wax control preparation is 0.93～1.04; The pH value is 7.1～9.0; Inhibiting rate for wax precipitation is greater than 77%; Viscosity break ratio is greater than 74%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110252749 CN102358833B (en) | 2011-08-30 | 2011-08-30 | Paraffin removing and resisting agent for oil well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110252749 CN102358833B (en) | 2011-08-30 | 2011-08-30 | Paraffin removing and resisting agent for oil well |
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| CN102358833A true CN102358833A (en) | 2012-02-22 |
| CN102358833B CN102358833B (en) | 2013-12-25 |
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| CN 201110252749 Active CN102358833B (en) | 2011-08-30 | 2011-08-30 | Paraffin removing and resisting agent for oil well |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371685A (en) * | 2014-11-24 | 2015-02-25 | 天津大港油田滨港集团博弘石油化工有限公司 | Paraffin remover and preparation method thereof |
| CN105419756A (en) * | 2015-10-28 | 2016-03-23 | 中国石油化工股份有限公司 | Wax removal and inhibition composition, water-soluble wax removal and inhibition agent and preparation method thereof |
| CN105950127A (en) * | 2016-05-16 | 2016-09-21 | 中国石油化工股份有限公司 | Pour point depressing and viscosity reducing composition for heavy oil, pour point depressing and viscosity reducing agent for heavy oil and preparation method of pour point depressing and viscosity reducing agent |
| CN107502327A (en) * | 2017-08-31 | 2017-12-22 | 常州道博化工有限公司 | A kind of preparation method for low concentration wax Wax removing agent |
| CN108822821A (en) * | 2018-06-08 | 2018-11-16 | 烟台智本知识产权运营管理有限公司 | A kind of Paraffin Removal preparation of high-content wax oil well |
| 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 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371685A (en) * | 2014-11-24 | 2015-02-25 | 天津大港油田滨港集团博弘石油化工有限公司 | Paraffin remover and preparation method thereof |
| CN105419756A (en) * | 2015-10-28 | 2016-03-23 | 中国石油化工股份有限公司 | Wax removal and inhibition composition, water-soluble wax removal and inhibition agent and preparation method thereof |
| CN105419756B (en) * | 2015-10-28 | 2018-08-10 | 中国石油化工股份有限公司 | A kind of Paraffin Removal composition, water-soluble Wax removing agent and preparation method thereof |
| CN105950127A (en) * | 2016-05-16 | 2016-09-21 | 中国石油化工股份有限公司 | Pour point depressing and viscosity reducing composition for heavy oil, pour point depressing and viscosity reducing agent for heavy oil and preparation method of pour point depressing and viscosity reducing agent |
| CN105950127B (en) * | 2016-05-16 | 2018-12-14 | 中国石油化工股份有限公司 | Viscous crude pour-viscosity reduction composition, viscous crude pour point depression and viscosity reduction agent and preparation method thereof |
| CN107502327A (en) * | 2017-08-31 | 2017-12-22 | 常州道博化工有限公司 | A kind of preparation method for low concentration wax Wax removing agent |
| CN108822821A (en) * | 2018-06-08 | 2018-11-16 | 烟台智本知识产权运营管理有限公司 | A kind of Paraffin Removal preparation of high-content wax oil well |
| 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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|---|---|
| CN102358833B (en) | 2013-12-25 |
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Address after: 100192, No. 8 clear road, Haidian District, Beijing (Fortune 1106 B, 1106A) Patentee after: BEIJING ENRUIDA TECHNOLOGY CO., LTD. Address before: 100192, No. 8 clear road, Haidian District, Beijing (Fortune 1106 B, 1106A) Patentee before: Beijing Enruida Technology Co., Ltd. |