CN104946222A - Oil-base paraffin remover for oil wells - Google Patents
Oil-base paraffin remover for oil wells Download PDFInfo
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- CN104946222A CN104946222A CN201410111758.2A CN201410111758A CN104946222A CN 104946222 A CN104946222 A CN 104946222A CN 201410111758 A CN201410111758 A CN 201410111758A CN 104946222 A CN104946222 A CN 104946222A
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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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Abstract
The invention provides an oil-base paraffin remover for oil wells, which is composed of aromatic hydrocarbon, saturated alkane, a penetrant and a solubilizer. The paraffin remover is composed of the following components in percentage by volume: 30-45% of aromatic hydrocarbon, 45-65% of saturated alkane, 0.1-1% of penetrant and 1.0-11.0% of solubilizer. The components are mixed by volume and stirred uniformly to obtain the paraffin remover. The density is 0.8-0.9 g/cm<3>; the paraffin dissolution rate is greater than 20mg/minute; the paraffin remover is free of sulfur and chlorine; the open flash point is greater than 40 DEG C; and the solidifying point is lower than -60 DEG C. The paraffin remover has the advantages of high flash point, high paraffin dissolution rate, environment friendliness and low toxicity, and well solves the problem of balance between the paraffin removal product rate and the environment friendliness and safety.
Description
Technical field
The present invention relates to a kind of oil well oil-base paraffin remover, belong to oilfield chemistry Application Areas.
Background technology
Oil field is ubiquity oil well paraffinication phenomenon on stream.Wax deposition make oil pumper load increase, pump efficiency reduce, oil well output decline, recover the oil time rate reduce, even directly block oil pipe and cause oil well to stop production.Therefore control and remove of well paraffin is the important technique measure ensureing that waxy crude oil is normally produced.Current dewaxing method has a variety of, effect lower to paraffin removal from oil well cost with chemical agent better, instant effect, be that current Application comparison is a kind of widely.And current oil-base paraffin remover is mostly prepared by petroleum industry product, comprise all kinds of SOLVENTS oil, gasoline, kerosene(oil)fraction, these thick products generally have a large amount of sulphur, chlorine element exists, very not environmentally.And these product flash-points are low, there is potential safety hazard, if patent publication No. is that flash-point is lower than 0 DEG C containing industrial solvent, sherwood oil in the paraffin remover component of CN1076002A, CN200410023491.8, and sulphur cl content is high, be not only not environmentally but also unsafe product.Number of patent application is contain chloroform in the formula of CN201110419425.2, belongs in oil recovery process and forbids product.So, on oil-base paraffin remover, there is the balance of paraffin removal rate and environmental protection, safety always.
Summary of the invention
The invention provides a kind of oil well oil-base paraffin remover, it is sulfur-bearing, chlorine not, has high flash point and high the speed of paraffin dissolution, solves the equilibrium problem of wax removal product speed and environmental protection, safety.
For achieving the above object, described oil well oil-base paraffin remover is made up of organic solvent, permeate agent and solubilizing agent, and preferred described solubilizing agent is alcohols.
Described organic solvent comprises aromatic hydrocarbon and saturated alkane, and it is non-polar solvent, can by oil well due to the coalescent wax of temperature and pressure fast and dissolve more completely.
In a preferred embodiment of the invention, described aromatic hydrocarbon is C
6-C
10aromatic hydrocarbons, at least one more preferably in benzene, dimethylbenzene and trimethylbenzene.Described saturated alkane is C
4-C
10alkane, at least one more preferably in pentane, hexane, heptane, octane and nonane.
Also containing white mineral oil in preferred described organic solvent.Described white mineral oil is often referred to slab oil, is the mineral oil after special deep refining, and colorless and odorless and unreactiveness and light stability can be good.Basic composition is saturated hydrocarbon structure, molecular weight is usually within 250-450 scope, and it is similar to zero containing materials such as aromatic hydrocarbon, nitrogen, oxygen, sulphur.The white mineral oil used in the present invention is mainly C
7above saturated alkane mixture.
In a preferred embodiment of the invention, described permeate agent is nonionogenic tenside, as JFC-2, be preferably the fluorine carbon tensio-active agent comprising fluorine-containing alkyl and oil loving hydrocarbon hydro carbons group in structural formula, as F331, F341, Basosol XP40 or Basosol XP50.Tensio-active agent has infiltration and promotes the effect of dispersion, and when with an organic solvent dissolving wax sample, adding of proper amount of surfactant can penetrate into wax sample deep, impels high concentration solvent to the diffusion of lower concentration direction, promotes that wax sample dissolves.
In a preferred embodiment of the invention, described solubilizing agent is C
2-C
10alcohols, at least one more preferably in n-Octanol, Pentyl alcohol, primary isoamyl alcohol, glycerol and ethylene glycol.The effect of solubilizing agent is solubilising, because wax sample comprises polar component and nonpolarity element, aforesaid aromatic hydrocarbons and saturated alkane are non-polar solvents, and alcohols is polar solvent, according to the similar principle that mixes, by alcohols and organic solvent with the use of wax sample being dissolved completely.And alcohols not sulfur-bearing, chlorine, there is high flash point, both dissolved in aqueous phase, dissolve in oil phase again, therefore as the substance migration that enhancement profit dissolves each other mutually.
In paraffin remover of the present invention, each component concentration is: by volume, aromatic hydrocarbon 30%-45%, saturated alkane 45%-65%, permeate agent 0.1%-1%, solubilizing agent 1.0%-11.0%.Said components mixed by volume and stirs, namely obtaining paraffin remover of the present invention.
In one embodiment of the invention, in described paraffin remover, each component concentration is: by volume, aromatic hydrocarbon 30%-45%, saturated alkane 10%-20%, white mineral oil 35%-45%, permeate agent 0.1%-1%, solubilizing agent 1.0%-11.0%.
In a preferred embodiment of the invention, in described paraffin remover, each component concentration is: by volume, dimethylbenzene 20%-30%, trimethylbenzene 10%-15%, octane 10%-20%, white mineral oil 35%-45%, permeate agent 0.1%-1%, n-Octanol 1.0%-8.0%, Pentyl alcohol 0.01%-3%.
In traditional oil-base paraffin remover, containing the objectionable impurities such as heavy benzol, sherwood oil, (heavy benzol has strong impulse stink, and toxicity is large; Sherwood oil flash-point <-20 DEG C, inflammable and explosive, and easily suck), the usual <10mg/min of the speed of paraffin dissolution.The density of oil well oil-base paraffin remover provided by the invention is 0.8-0.9g/cm
3, the speed of paraffin dissolution is >20mg/min, not sulfur-bearing, chlorine element, open flash point > 40 DEG C, condensation point <-60 DEG C.Its flash-point is high, and the speed of paraffin dissolution is high, environmental protection low toxicity, well solves the equilibrium problem of wax removal product speed and environmental protection, safety.Preferably in described paraffin remover, contain white mineral oil, with other organic solvent and the acting in conjunction of alcohols solubilizing agent, strengthen molten wax effect further.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but the present invention is not limited in following embodiment.
Strictly speaking, the wax in crude oil refers to the normal paraffin that those carbon numbers are higher, usually C
16h
34~ C
63h
128normal paraffin be called wax, pure paraffin is the slightly transparent tasteless crystal of white.In a broad aspect, high carbon chain isoparaffin and also belong to the category of wax with the naphthenic hydrocarbon of chain alkyl or aromatic hydrocarbon.Usually, both contained other higher hydrocarbons (as isoalkane and naphthenic hydrocarbon) what mix with high-carbon normal paraffin, black semi-solid state and the solid matter of the dirt again containing colloid, bituminous matter, salt-pepper noise, formation, silt particle, iron rust, mud and water solution of oil etc. are referred to as wax.The AshkS-507 well of Kazakhstan taken from by wax sample in embodiment, containing stratum dirt insolubles 0.12wt%, and saturated alkane 85.89wt%, aromatic hydrocarbon 4.79wt%, gum asphalt 3.04wt%, wherein C
34~ C
54content is relatively high.
White mineral oil in embodiment is the 2# white mineral oil that Fu Lihua petrochemical industry company limited produces; Permeate agent is selected from the one in F331, F341, Basosol XP40 and XP50J, wherein F331 and F341 is Hangzhou Ren Shan Science and Technology Ltd. commercially available prod, Basosol XP40 and XP50 is BASF nonionogenic tenside commodity, and all the other raw materials are commercially available technical grade usual production.
(1) permeate agent effect comparison embodiment
By volume, dimethylbenzene 30%, trimethylbenzene 12.9%, octane 14.3%, white mineral oil 42.8% mixing are made into solvent, and add the penetrant JFC-2 of 0.1ml, F331, F341 in the solvent respectively to three parts of 15ml, concrete outcome is in table 1:
Table 1 permeate agent effect comparison is tested
The speed of paraffin dissolution obtains according to oil recovery clear, paraffin inhibitor chemical technical qualification standard (SY/T6300-2009) test, and wherein paraffin remover the speed of paraffin dissolution is higher, just illustrates that it takes wax ability stronger, and takes wax ability not quantitatively.Table 1 illustrates and uses the speed of paraffin dissolution of solvent of permeate agent, dispersion stabilization and take the solvent that wax ability is better than not using permeate agent.
(2) embodiment prepared by paraffin remover
Embodiment 1
By volume, mixed by dimethylbenzene 25%, trimethylbenzene 10%, octane 15%, white mineral oil 40%, permeate agent F3310.6%, n-Octanol 7.05% and Pentyl alcohol 2.35%, gained liquid is paraffin remover 1 of the present invention, and its performance is in table 2.
Embodiment 2
By volume, mixed by dimethylbenzene 29%, trimethylbenzene 12%, octane 14%, white mineral oil 41%, permeate agent F3410.67%, n-Octanol 1.1% and Pentyl alcohol 0.055%, gained liquid is paraffin remover 2 of the present invention.
Table 2 paraffin remover performance
| Outward appearance | Weak yellow liquid |
| Molten wax speed mg/min | 22 |
| Flash-point DEG C | 42 |
| Sulphur content μ g/g | 0 |
| Cl content mg/l | 0 |
| Condensation point DEG C | ＜-60 |
As shown in Table 2, the speed of paraffin dissolution >20mg/min of described paraffin remover, open flash point > 40 DEG C, condensation point <-60 DEG C, not sulfur-bearing, chlorine element.
By referring to exemplary embodiments, invention has been described, but to should be understood to word wherein used be descriptive and explanatory vocabulary, instead of limited vocabulary.Can modify the present invention by the scope being defined in the claims in the present invention, and the present invention be revised not deviating from scope and spirit of the present invention.Although the present invention wherein described relates to specific method, material and embodiment, and do not mean that the present invention is limited to particular case disclosed in it, on the contrary, easily extensible of the present invention is to other all methods and applications with identical function.
Claims (10)
1. an oil well oil-base paraffin remover, is made up of organic solvent, permeate agent and solubilizing agent, and preferred described solubilizing agent is alcohols.
2. paraffin remover according to claim 1, is characterized in that, described organic solvent comprises aromatic hydrocarbon and saturated alkane.
3. paraffin remover according to claim 2, is characterized in that, described aromatic hydrocarbon is C
6-C
10aromatic hydrocarbons, at least one preferably in benzene, dimethylbenzene and trimethylbenzene.
4. paraffin remover according to claim 2, is characterized in that, described saturated alkane is C
4-C
10alkane, at least one preferably in pentane, hexane, heptane, octane and nonane.
5. the paraffin remover according to any one of Claims 1-4, is characterized in that, also containing white mineral oil in described organic solvent.
6. paraffin remover according to claim 1, is characterized in that, described permeate agent is nonionogenic tenside, is preferably fluorine carbon tensio-active agent.
7. paraffin remover according to claim 1, is characterized in that, described solubilizing agent is C
2-C
10alcohols, at least one preferably in n-Octanol, Pentyl alcohol, primary isoamyl alcohol, glycerol and ethylene glycol.
8. the paraffin remover according to any one of claim 2 to 4, is characterized in that, in described paraffin remover, each component concentration is: by volume, aromatic hydrocarbon 30%-45%, saturated alkane 45%-65%, permeate agent 0.1%-1%, solubilizing agent 1.0%-11.0%.
9. the paraffin remover according to any one of claim 2 to 7, is characterized in that, in described paraffin remover, each component concentration is: by volume, aromatic hydrocarbon 30%-45%, saturated alkane 10%-20%, white mineral oil 35%-45%, permeate agent 0.1%-1%, solubilizing agent 1.0%-11.0%.
10. the paraffin remover according to any one of claim 1 to 9, is characterized in that, the density of described paraffin remover is 0.8-0.9g/cm
3, the speed of paraffin dissolution >20mg/min, not sulfur-bearing, chlorine element, open flash point > 40 DEG C, condensation point <-60 DEG C.
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| CN201410111758.2A CN104946222B (en) | 2014-03-24 | 2014-03-24 | A kind of oil well oil-base paraffin remover |
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|---|---|---|---|
| CN201410111758.2A CN104946222B (en) | 2014-03-24 | 2014-03-24 | A kind of oil well oil-base paraffin remover |
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| CN104946222A true CN104946222A (en) | 2015-09-30 |
| CN104946222B CN104946222B (en) | 2018-01-09 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419759A (en) * | 2015-12-24 | 2016-03-23 | 陕西延安石油天然气有限公司 | High-effective environment-friendly oil-based wax removal 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 |
| CN107652955A (en) * | 2017-10-12 | 2018-02-02 | 中国海洋石油总公司 | A kind of high-efficiency environment friendly viscous crude organic deposition disperses de-plugging system and preparation method thereof |
| 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 |
| CN108318370A (en) * | 2018-01-05 | 2018-07-24 | 西南石油大学 | The device and its assay method with pressure for measuring paraffin remover the speed of paraffin dissolution and recovery ratio |
| CN108441199A (en) * | 2018-03-23 | 2018-08-24 | 北京捷贝通石油技术股份有限公司 | A kind of environment-friendly highly efficient heavy crude thinner |
| CN108467716A (en) * | 2018-03-28 | 2018-08-31 | 中国石油化工股份有限公司 | A kind of oil-base paraffin remover |
| CN109762545A (en) * | 2019-02-27 | 2019-05-17 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | A kind of well wellbore deep play acting type Wax removing agent and preparation method thereof |
| CN110105942A (en) * | 2018-02-01 | 2019-08-09 | 中国石油天然气股份有限公司 | A kind of paraffin remover and its preparation method and application |
| CN111946309A (en) * | 2020-08-10 | 2020-11-17 | 王誉清 | Cold damage prevention dredging agent for low temperature resistant oil reservoir |
| CN112210352A (en) * | 2020-10-20 | 2021-01-12 | 克拉玛依新科澳石油天然气技术股份有限公司 | Oil well sucker rod soft stuck freeing agent, preparation method thereof and freeing use method |
| WO2022231575A1 (en) * | 2021-04-26 | 2022-11-03 | Halliburton Energy Services, Inc. | Methods of treating paraffins, iron sulfide, hydrogen sulfide, and/or bacteria |
| CN116200177A (en) * | 2021-11-30 | 2023-06-02 | 天津大港油田滨港集团博弘石油化工有限公司 | High-flash-point environment-friendly oil-based paraffin remover without aromatic hydrocarbon |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105419759B (en) * | 2015-12-24 | 2018-05-04 | 陕西延安石油天然气有限公司 | A kind of high-efficiency environment friendly oil-base paraffin remover |
| CN105419759A (en) * | 2015-12-24 | 2016-03-23 | 陕西延安石油天然气有限公司 | High-effective environment-friendly oil-based wax removal agent |
| CN107652955B (en) * | 2017-10-12 | 2020-12-29 | 中国海洋石油集团有限公司 | Efficient environment-friendly thickened oil organic scale dispersion blockage removing system and preparation method thereof |
| CN107652955A (en) * | 2017-10-12 | 2018-02-02 | 中国海洋石油总公司 | A kind of high-efficiency environment friendly viscous crude organic deposition disperses de-plugging system and preparation method thereof |
| 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 |
| CN108318370A (en) * | 2018-01-05 | 2018-07-24 | 西南石油大学 | The device and its assay method with pressure for measuring paraffin remover the speed of paraffin dissolution and recovery ratio |
| CN110105942A (en) * | 2018-02-01 | 2019-08-09 | 中国石油天然气股份有限公司 | A kind of paraffin remover and its preparation method and application |
| CN108441199A (en) * | 2018-03-23 | 2018-08-24 | 北京捷贝通石油技术股份有限公司 | A kind of environment-friendly highly efficient heavy crude thinner |
| CN108467716B (en) * | 2018-03-28 | 2020-09-22 | 中国石油化工股份有限公司 | Oil-based paraffin remover |
| CN108467716A (en) * | 2018-03-28 | 2018-08-31 | 中国石油化工股份有限公司 | A kind of oil-base paraffin remover |
| CN109762545A (en) * | 2019-02-27 | 2019-05-17 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | A kind of well wellbore deep play acting type Wax removing agent and preparation method thereof |
| CN109762545B (en) * | 2019-02-27 | 2021-03-02 | 中国石油天然气股份有限公司长庆油田分公司第十二采油厂 | Oil well shaft deep-acting wax removing and preventing agent and preparation method thereof |
| CN111946309A (en) * | 2020-08-10 | 2020-11-17 | 王誉清 | Cold damage prevention dredging agent for low temperature resistant oil reservoir |
| CN112210352A (en) * | 2020-10-20 | 2021-01-12 | 克拉玛依新科澳石油天然气技术股份有限公司 | Oil well sucker rod soft stuck freeing agent, preparation method thereof and freeing use method |
| WO2022231575A1 (en) * | 2021-04-26 | 2022-11-03 | Halliburton Energy Services, Inc. | Methods of treating paraffins, iron sulfide, hydrogen sulfide, and/or bacteria |
| US11753578B2 (en) | 2021-04-26 | 2023-09-12 | Halliburton Energy Services, Inc. | Methods of treating paraffins, iron sulfide, hydrogen sulfide, and/or bacteria |
| CN116200177A (en) * | 2021-11-30 | 2023-06-02 | 天津大港油田滨港集团博弘石油化工有限公司 | High-flash-point environment-friendly oil-based paraffin remover without aromatic hydrocarbon |
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