CN1035635C - Oil well paraffin cleaning agent - Google Patents
Oil well paraffin cleaning agent Download PDFInfo
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- CN1035635C CN1035635C CN93110192A CN93110192A CN1035635C CN 1035635 C CN1035635 C CN 1035635C CN 93110192 A CN93110192 A CN 93110192A CN 93110192 A CN93110192 A CN 93110192A CN 1035635 C CN1035635 C CN 1035635C
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Abstract
The present invention relates to oil well paraffin cleaning agent for oil extraction, which is formed by preparing cracked gasoline with unsaturated hydrocarbon, kerosene distillate, heavy hydrocarbons, anti-oxidant agent or polymerization inhibiting agent, surface active agent and penetrating agent. Because the components of the oil well paraffin cleaning agent do not comprise corrosive compounds, such as chlorine, sulfur, etc., the pre-treating process of crude oil before the treatment of processing is simplified, and the severe corrosion of an appliance is eliminated. Simultaneously, the paraffin cleaning agent also enhances the good performance of dissolving gum and is the ideal paraffin cleaning agent having the advantages of high safety and reliability and convenient use, storage and transportation.
Description
Clean sedimental paraffin remover of well and preparation method with chemical method when the present invention relates to the oil field oil recovery.
As everyone knows, when recover the oil in the oil field, crude oil is to extract out by the deep-well oil pump under the stratum, delivers to ground through pipeline.In this course, to separate out deposition blocked because of colloid contained in the crude oil and wax often for oil pipeline and deep-well oil pump.Traditional treating method is the method cleaning borehole wall with mechanical scraping.After adopt heat to wash method again, hot water is injected the wall pipe wax is dissolved, utilize the derrick hold up that pump is mentioned cleaning again, the general processing time that the well that stops up flatly need stop production 5-6 days.These two kinds of methods have caused economically, temporal loss and waste.Now usually the method for the removing paraffin deposit thing that adopts is to utilize chemical solvent to be injected in the well, makes that the wax of obstruction is dissolved to be fallen.United States Patent (USP) 4775489 provides a kind of automatic decomposition foaming oil-in-water type emulsus solvent that the paraffin deposit thing stops up that dissolves, and it is a kind of low-density solvent foamy, under stirring condition, can remove the paraffin deposit of drilling well and surrounding structure.Its prescription comprises that moisture liquid component (c) inert gas of organic solvent (b) of (a) dissolving paraffin reaches (d) surfactant.The oil-in-water emulsion that is foam under stirring condition, but when not stirring, this emulsion automatic deaerating is isolated two kinds of liquid phases of brackish water and finish.The organic solvent of the dissolving paraffin that comprises in prescription is meant varsol, as halogenated hydrocarbons or polarization solvent and mixture.
Because in the prescription of this patent, the organic solvent of dissolving paraffin contains Halocarbon blends.As carrene, carbon tetrachloride, trichloroethanes, they contain mordant compounds such as the different chlorine of quantity, sulphur, to very harm in crude refining or the crude oil chemical process, cause the crude oil of a lot of factories because of the processing chlorine-containing compound, cause the equipment corrosion process units repeatedly to stop, be subjected to heavy economic loss.In addition, the liquid, aqueous water that means saliferous in prescription its objective is to prevent clay swell and destroy earth formation.These salts are potassium chloride or sodium chloride, and they have brought burden to the preceding desalting and dewatering of crude oil processing, have increased processing cost.Various components in this prescription need could be mixed under condition of stirring, and the molten wax colloidal sol matter of ability reaches and removes the purpose that oil well stops up.After stopping to stir, each component is separated immediately, and halogenated hydrocarbon is stayed in the crude oil, not only brings harm to processing behind the crude oil, stores also dangerous.
The objective of the invention is to prepare a kind of than the prior art safety and reliability, molten wax colloidal sol matter speed is fast, and can simplify the preprocessing process before the crude oil processing, to the free from corrosion paraffin remover of crude oil processing equipment.
Paraffin remover of the present invention comprises surfactant and light hydrocarbon, heavy hydrocarbon, antioxidant or polymerization inhibitor, bleeding agent, its configuration proportion is: light hydrocarbon, heavy hydrocarbon are 8: 2～1: 1 (weight ratio), antioxidant or polymerization inhibitor consumption are 10/5/10000ths～ten thousand (weight ratios) light, the heavy hydrocarbons sum, the bleeding agent consumption is one thousandth～3/1000ths (weight ratio) light, the heavy hydrocarbons sum, dosage of surfactant be gently, one of the percentage of heavy hydrocarbons sum～3 percent (weight ratios).
Light hydrocarbon is meant drippolene, the kerosene distillate that contains unsaturated hydrocarbons, wherein contain C5-C9 aromatic hydrocarbons 30%-50% (weight), linear paraffin and cycloalkane are 55%-70% (weight), wherein unsaturated hydrocarbons content accounts for the 8%-12% (weight) of total amount, and it mainly acts on and is to dissolve rapidly the paraffin deposit thing.
Heavy hydrocarbon is meant the aromatic component of boiling point more than 300 ℃, wherein contain methyl dihydronaphthalene, isopropyl naphthalene, biphenyl, acenaphthylene, ethylnaphthalene, diformazan naphthalene, 3-methyl biphenyl, 2-methyl biphenyl, trimethyl-naphthalene, dimethyl diphenyl, methyl acenaphthylene, methyl acenaphthene, methyl easily, phenanthrene, anthracene, methyl anthracene etc.Key of the present invention is that the condensed-nuclei aromatics with high-load replaces in the former paraffin remover added chloride in order to increase the proportion and the molten wax speed of paraffin remover, and it is long-term with adding muriatic paraffin remover to solve the oil field, brings the heavy corrosion problem to process equipment behind the crude oil.This paraffin remover also increases the premium properties of dissolving colloid simultaneously, is that former paraffin remover is incomparable.
Drippolene, kerosene distillate and heavy arene are easy to get in oil refinery processing, do not need to go specially processing and preparing.Heavy arene can be brought into play advantage separately with after light aromatics mixes, and promotes molten wax effect.After mixing, molten wax effect is better.
Surfactant adopts OP series usually, and its effect is that to promote that heavy arene and light aromatics evenly mix not stratified, addition be gently, the 1%-3% (weight) of heavy hydrocarbons sum.Antioxidant is selected 2,6 di-t-butyls-4 methylphenol for use, and polymerization inhibitor is selected metacresol for use, and its effect is not oxidation of unsaturates and not polycondensation in the protection component, its consumption be gently, the heavy hydrocarbons sum 5/10000ths to 10/10000ths.Bleeding agent is butyl ether or butanols, and main effect is the permeability that increases paraffin remover, its consumption be gently, the heavy hydrocarbons sum 5/1000ths to 8/1000ths.The preparation method of paraffin remover is that drippolene, kerosene distillate and the heavy arene that will contain unsaturated hydrocarbons was by preparation (weight) in 8: 2 to 1: 1, at first in containing the drippolene of unsaturated hydrocarbons, kerosene distillate, add 5/10000ths to 10/10000ths antioxidant 2 in the preparation, 6 di-t-butyls-4 methylphenol or polymerization inhibitor metacresol, the surfactant OP-15 or the OP-7 that add heavy arene and 1%-3% then, add 3/1000ths to 5/1000ths bleeding agent butyl ether or butanols at last, evenly stir at normal temperatures and pressures, make product.Its proportion is greater than 0.86, and flash-point is greater than 60 ℃.
Embodiment 1:
In the beaker of 500ml, the antioxidant 2 that adds 80% light hydrocarbons (drippolene, the kerosene distillate that contain unsaturated hydrocarbons) and 10/10000ths, 6 di-t-butyls-4 methylbenzene, add 20% heavy arene then, last 1% the surfactant OP-15 that adds again, bleeding agent butyl ether with 3/1000ths evenly stirred three minutes at normal temperatures and pressures, stop the back product.Its proportion 0.86 (20 ℃), molten wax speed (40 ℃) is 9.5 * 10-3g/mL.min, surface tension 28.8mN/m-29.8mN/m.
Embodiment 2:
In the beaker of 500ml, the antioxidant 2 that adds 70% light hydrocarbons (drippolene, the kerosene distillate that contain unsaturated hydrocarbons) and 7/10000ths, 6 di-t-butyls-4 methylbenzene, add 30% heavy arene then, last 2% the surfactant OP-15 that adds again, bleeding agent butanols with 4/1000ths evenly stirred three minutes at normal temperatures and pressures, stop the back product.Proportion 0.92 (20 ℃), molten wax speed (40 ℃) is 8 * 10-3g/ml.min, surface tension 28.8mN/m-29.8mN/m.
Embodiment 3:
In the beaker of 500ml, the antioxidant 2 that adds 60% light hydrocarbons (drippolene, the kerosene distillate that contain unsaturated hydrocarbons) and 5/10000ths, 6 di-t-butyls-4 methylbenzene, add 30% heavy arene then, last 3% the surfactant OP-15 that adds again, bleeding agent butyl ether with 5/1000ths evenly stirred three minutes at normal temperatures and pressures, stop the back product.Proportion 0.91 (20 ℃), molten wax speed (40 ℃) is 7.4 * 10-3g/ml.min, surface tension 28.8mN/m-29.8mN/m.
Embodiment 4:
In the beaker of 500ml, the polymerization inhibitor metacresol that adds 50% light hydrocarbons (drippolene, the kerosene distillate that contain unsaturated hydrocarbons) and 5/10000ths, add 50% heavy arene then, last 3% the surfactant OP-15 that adds again, with 5/1000ths bleeding agent butyl ether, evenly stirred at normal temperatures and pressures three minutes, stop the back product.Its proportion 0.98 (20 ℃), molten wax speed (40 ℃) is 7.2 * 10-3g/ml.min, surface tension 28.8mN/m-29.8mN/m.
Paraffin remover of the present invention, because corrosive compounds such as not chloride in the component, sulphur, adopt the condensed-nuclei aromatics of high-load to replace in the former paraffin remover added chloride in order to increase the proportion and the molten wax speed of paraffin remover, solve the oil field for a long time with adding muriatic paraffin remover, bring the heavy corrosion problem to process equipment behind the crude oil.Increasing the premium properties of dissolving colloid simultaneously again, is that former paraffin remover is incomparable.The cleaning mediation that this paraffin remover also stops up because of the paraffin gum deposit applicable to crude oil pipeline.After several component preparations evenly in the paraffin remover, need not add stirring power, can use safely, storage and transportation are all very convenient.
Claims (5)
1, a kind of well wax clearing agent for oil of the usefulness of recovering the oil, it comprises surfactant and light hydrocarbon, it is characterized in that: also comprise heavy hydrocarbon, antioxidant or polymerization inhibitor, bleeding agent, its configuration proportion is: light hydrocarbon: heavy hydrocarbon is 8: 2～1: 1 (weight ratio), light hydrocarbon is meant the drippolene that contains unsaturated hydrocarbons, in the kerosene distillate, contain C5-C9 aromatic hydrocarbons 30%-50% (weight), linear paraffin and cycloalkane are 50%-70% (weight), heavy hydrocarbon is meant the aromatic component of boiling point more than 300 ℃, antioxidant or polymerization inhibitor consumption are light, 10/5/10000ths～ten thousand (weight ratios) of heavy hydrocarbons sum, the bleeding agent consumption is light, the one thousandth of heavy hydrocarbons sum～3/1000ths (weight ratio), dosage of surfactant is light, one of percentage of heavy hydrocarbons sum～3 percent (weight ratio), its proportion is greater than 0.86, and flash-point is greater than 60 ℃.
2, paraffin remover according to claim 1 is characterized in that: antioxidant is selected 2,6 di-t-butyls-methylphenol for use, and polymerization inhibitor is selected metacresol for use.
3, paraffin remover according to claim 1 is characterized in that: bleeding agent is butyl ether or butanols.
4, paraffin remover according to claim 1 is characterized in that: surfactant adopts OP series usually.
5, a kind of preparation method of well wax clearing agent for oil of the usefulness of recovering the oil, it is characterized in that: at first antioxidant is added in the light hydrocarbon, add heavy hydrocarbon, surfactant, bleeding agent then, its configuration proportion is: light hydrocarbon: heavy hydrocarbon is 8: 2～1: 1 (weight ratio), antioxidant or polymerization inhibitor consumption are 10/5/10000ths～ten thousand (weight ratios) light, the heavy hydrocarbons sum, the bleeding agent consumption is one thousandth～3/1000ths (weight ratio) light, the heavy hydrocarbons sum, dosage of surfactant be gently, one of the percentage of heavy hydrocarbons sum～3 percent (weight ratios).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110192A CN1035635C (en) | 1993-03-23 | 1993-03-23 | Oil well paraffin cleaning agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110192A CN1035635C (en) | 1993-03-23 | 1993-03-23 | Oil well paraffin cleaning agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1076002A CN1076002A (en) | 1993-09-08 |
| CN1035635C true CN1035635C (en) | 1997-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93110192A Expired - Lifetime CN1035635C (en) | 1993-03-23 | 1993-03-23 | Oil well paraffin cleaning agent |
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| Country | Link |
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| CN (1) | CN1035635C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113857C (en) * | 1998-04-03 | 2003-07-09 | 大庆石油学院 | Nonionic surface active agent for tertiary oil recovery and productive method thereof |
| CN103421625B (en) * | 2012-05-15 | 2015-09-23 | 中国石油天然气股份有限公司 | A kind of long distance pipeline paraffin remover and wax removal delivery technology method |
| CN103320108B (en) * | 2013-06-07 | 2015-05-27 | 陕西科技大学 | Wax-removing agent and preparation method thereof |
| CN103468232A (en) * | 2013-09-27 | 2013-12-25 | 天津滨海瀚元化工有限公司 | Preparation method for deposited-wax cleaning agent |
| CN105567201A (en) * | 2014-10-09 | 2016-05-11 | 中国石油天然气股份有限公司 | Oil well oil-based wax removing agent |
| CN107828396A (en) * | 2017-10-24 | 2018-03-23 | 中国石油天然气股份有限公司 | High flashing point environment-friendly paraffin remover |
| CN110105942B (en) * | 2018-02-01 | 2021-09-28 | 中国石油天然气股份有限公司 | Wax remover and preparation method and application thereof |
| CN108690589B (en) * | 2018-05-31 | 2020-11-06 | 中国石油天然气股份有限公司 | Oil well blocking remover and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998743A (en) * | 1973-12-07 | 1976-12-21 | Union Oil Company Of California | Method and solvent composition for stimulating the production of oil from a producing well |
| US4592424A (en) * | 1984-08-13 | 1986-06-03 | Texaco Inc. | Secondary recovery procedure |
| US4646837A (en) * | 1985-09-24 | 1987-03-03 | Shell Oil Company | Process for removal of wax deposits |
-
1993
- 1993-03-23 CN CN93110192A patent/CN1035635C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998743A (en) * | 1973-12-07 | 1976-12-21 | Union Oil Company Of California | Method and solvent composition for stimulating the production of oil from a producing well |
| US4592424A (en) * | 1984-08-13 | 1986-06-03 | Texaco Inc. | Secondary recovery procedure |
| US4646837A (en) * | 1985-09-24 | 1987-03-03 | Shell Oil Company | Process for removal of wax deposits |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1076002A (en) | 1993-09-08 |
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