CN105176508A - Surfactant for blending active water instead of thin oil in thickened oil - Google Patents
Surfactant for blending active water instead of thin oil in thickened oil Download PDFInfo
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- CN105176508A CN105176508A CN201510491386.5A CN201510491386A CN105176508A CN 105176508 A CN105176508 A CN 105176508A CN 201510491386 A CN201510491386 A CN 201510491386A CN 105176508 A CN105176508 A CN 105176508A
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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
A surfactant for blending active water instead of thin oil in thickened oil comprises the following components by weight: 1-2 parts of lauryl alcohol polyoxyethylene ether sodium sulfate, 5-8 parts of Polyoxyethylene fatty acid, 6-10 parts of fatty alcohol-polyoxyethylene ether, 4-9 parts of gamma-glycidoxypropyl trimethoxysilane, 5-9 parts of glycol acetylene and 60-65 parts of water. The surfactant can reduce the interfacial tension, improve the efficiency of oil wash, reduce flow resistance, improve mobility, reduce station return pressure of thickened oil, ensure the smooth flow of thickened oil production process, reduce oil viscosity, increase fluid flow properties, and reduce the friction resistance of tubing string and conveying pressure of oil return pipe, thus ensuring the normal production of oil well.
Description
Technical field
The present invention relates to a kind of surfactant, especially relate to the surfactant that a kind of lifting thickened oil active water replaces mixing light oil.
Background technology
Known, viscous crude is the crude oil that bituminous matter and gum level are higher, viscosity is larger.In super-viscous oil production management, for solution viscosity is high, poor fluidity etc. is caused, oil well load is high, back pressure is high, viscous crude enters the contradictions such as pump difficulty, viscosity reduction mode mainly adopts three kinds of modes such as medium-frequency electrical heating, down-hole mixing light oil and ground watering solve.
Medium-frequency electrical heating is heated pit shaft part viscous crude by down-hole heating cables, and reach reducing thick oil viscosity, reduce pumping unit load object, which is mainly applicable to the initial stage of bringing in a well, some mechanical water blockoff well and outlying well; Down-hole mixing light oil is by mixing light oil under pump, reduces viscosity of thickened oil, solves viscous crude and enters pump difficulty, reach and improve pump efficiency object, and which is mainly applicable to super-viscous oil well and handles up and produce the middle and later periods, produced liquid in oil well temperature low, moisture low period; Ground watering is in production fluid, mix certain calorimetric sewage, by improving mixing liquid flowing property, reach reduction enter the station back pressure, guarantee the unimpeded object of flow process, which is applicable to each production phase of super-viscous oil well;
It is that field use the most extensively, the most effectively falls sticking method that glutinous method falls in chemistry, in viscous oil recovery and gathering and transportation technology, have application.Domestic research in this respect at present also achieves greater advance.What current research was more is that thick oil hydrothermal catalytic cracking falls glutinous method, adds these two kinds of methods of oil soluble viscosity reducer.Containing polar group side chain and high-carbon alkyl backbones in visbreaking agent molecule, main carbochain can make visbreaking agent molecule be dissolved in oil, the polar group of side chain can form stronger hydrogen bond with colloid, bitum polar group, enter between colloid and bitum sheet molecule by dispersion, osmosis, part breaks the aggregate structure that plane overlap is piled up, formation sheet molecule is random to be piled up, structure fluffs loose, and reduce the colloid comprised in aggregate, bitum molecule amount, reduce crude oil force of cohesion, from but Crude viscosity reduce.
Traditional viscous crude is produced three kinds of mode real works such as viscosity reduction mode medium-frequency electrical heating, down-hole mixing light oil and ground watering and is proved that its viscosity reducing effect is not good, cannot guarantee that the flow process of oil production is unimpeded, viscosity reduction is costly, viscosity of thickened oil cannot be reduced fully, can't resolve the problem that viscous crude enters pump difficulty.
Summary of the invention
In order to overcome the deficiency in background technology, the invention discloses the surfactant that a kind of lifting thickened oil active water replaces mixing light oil, can interfacial tension be reduced by the present invention, improve displacement efficiency, reduce resistance to flow, improve liquidity, reduce viscous crude enter the station back pressure, guarantee the unimpeded of viscous crude Production Flow Chart, reduce viscosity of crude, improve the flowing property of fluid, tubing string friction resistance and oil return pipeline delivery pressure can be reduced simultaneously, and then ensure that oil well is normally produced.
Realize technical scheme of the present invention as follows: a kind of lifting thickened oil active water replaces the surfactant of mixing light oil, and its component comprises: the fatty alcohol-polyoxyethylene ether of the Brij 35 sodium sulfate of 1 ~ 2 weight part, the polyoxyethylene carboxylate of 5 ~ 8 weight parts, 6 ~ 10 weight parts, the γ-glycidyl ether oxygen propyl trimethoxy silicane of 4 ~ 9 weight parts, the ethoxylated acetylenic glycol of 5 ~ 9 weight parts, the water of 60 ~ 65 weight parts.
Preferably, described lifting thickened oil active water replaces the polyoxyethylene carboxylate of 5 ~ 8 weight parts in the surfactant component of mixing light oil to can be replaced the polyoxyethylene fatty amine compound of 5 ~ 8 weight parts.
Preferably, described lifting thickened oil active water replaces the polyoxyethylene carboxylate of 5 ~ 8 weight parts in the surfactant component of mixing light oil to can be replaced the alkylol amide of 5 ~ 8 weight parts.
Preferably, described lifting thickened oil active water replaces the Brij 35 sodium sulfate of 1 ~ 2 weight part in the surfactant component of mixing light oil to can be replaced the fatty alcohol sodium isethionate of 1 ~ 2 weight part.
Preferably, described lifting thickened oil active water replaces the Brij 35 sodium sulfate of 1 ~ 2 weight part in the surfactant component of mixing light oil to can be replaced the amide group Soxylat A 25-7 magnesium sulfate of 1 ~ 2 weight part.
Preferably, described lifting thickened oil active water replaces the Brij 35 sodium sulfate of 1 ~ 2 weight part in the surfactant component of mixing light oil to can be replaced the 1-isobutyl-3,5-dimethylhexylphosphoric acid sylvite of 1 ~ 2 weight part.
In the present invention, the molecular formula of the coupling agent γ-glycidyl ether oxygen propyl trimethoxy silicane of indication is:
CH
2cH (O) CH
2o (CH
2)
3si (OCH
3)
3, structural formula is:
In the present invention, the anionic and nonionic surfactant polyoxyethylene carboxylate of indication is the composition of following structural formula:
Its general formula is RCOO (CH
2cH
2o)
nh
Wherein: n is 0 or 1 or 2; Preferred n=5.
The invention has the beneficial effects as follows, a kind of lifting thickened oil active water of the present invention replaces the surfactant of mixing light oil, by adding certain density tensio-active agent in water mixing, mixed with Produced Liquid by oil jacket annular space or ground oil return pipeline, form milk sap or dispersion system, reduce viscosity of crude, improve the flowing property of fluid, tubing string friction resistance and oil return pipeline delivery pressure can be reduced simultaneously, and then ensure that oil well is normally produced.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is surface tension data figure of the present invention.
Embodiment
In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention the scope of claim request protection.It is present that in conjunction with utilizing the effect of surfactant of the present invention reduction viscosity of crude in actual field produces, the present invention is further detailed explanation.
Surface tension: temperature is 25 DEG C time, and surfactant has the ability reducing oil water interfacial tension preferably, and concentration is 0.3% time, and interfacial tension can be down to 10
-2the order of magnitude.Surface tension as shown in Figure 1.
Interfacial activity between different concns cleanup additive and crude oil:
Emulsification of crude oil performance: the practical viscosity measuring crude oil under 60 DEG C of conditions.Weigh the surfactant aqueous solution and crude oil of getting different concns in the balance, ratio is 7: 3, constant temperature 1 hour under 60 DEG C of conditions, and stirs into milk sap, surveys its viscosity, and records the situation of milk sap simultaneously.
Actual field produces shows, individual well is mixing liquid measure 5m every day
3condition under, cost-saving 0.2598 ten thousand yuan/day of adding active water Cost comparisons mixing light oil, contrast cost-saving 0.0263 ten thousand yuan/day of medium-frequency electrical heating.
By showing five mouthfuls of oil wells test in place of 30 days, it is feasible in technological line that underground adding active water substitutes the mixing light oil mode of production.In the initial stage of producing in the oil well cycle, mid-term stage and reduction ground watering amount, normal production can be realized.In latter stage in cycle, affect, need join volume according to back pressure dynamic conditioning by factors such as moisture low, aerogenesis, suitably add labour intensity large, suggestion adopts underground mixing light oil mode to produce.
Analyzed by economic efficiency contrast, after changing adding active water, effectively can reduce input.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (6)
1. lifting thickened oil active water replaces a surfactant for mixing light oil, and its component comprises: the fatty alcohol-polyoxyethylene ether of the Brij 35 sodium sulfate of 1 ~ 2 weight part, the polyoxyethylene carboxylate of 5 ~ 8 weight parts, 6 ~ 10 weight parts, the γ-glycidyl ether oxygen propyl trimethoxy silicane of 4 ~ 9 weight parts, the ethoxylated acetylenic glycol of 5 ~ 9 weight parts, the water of 60 ~ 65 weight parts.
2. lifting thickened oil active water according to claim 1 replaces the surfactant of mixing light oil, it is characterized in that: in its component, the polyoxyethylene carboxylate of 5 ~ 8 weight parts can be replaced the polyoxyethylene fatty amine compound of 5 ~ 8 weight parts.
3. lifting thickened oil active water according to claim 1 replaces the surfactant of mixing light oil, it is characterized in that: in its component, the polyoxyethylene carboxylate of 5 ~ 8 weight parts can be replaced the alkylol amide of 5 ~ 8 weight parts.
4. lifting thickened oil active water according to claim 1 replaces the surfactant of mixing light oil, it is characterized in that: in its component, the Brij 35 sodium sulfate of 1 ~ 2 weight part can be replaced the fatty alcohol sodium isethionate of 1 ~ 2 weight part.
5. lifting thickened oil active water according to claim 1 replaces the surfactant of mixing light oil, it is characterized in that: in its component, the Brij 35 sodium sulfate of 1 ~ 2 weight part can be replaced the amide group Soxylat A 25-7 magnesium sulfate of 1 ~ 2 weight part.
6. lifting thickened oil active water according to claim 1 replaces the surfactant of mixing light oil, it is characterized in that: in its component, the Brij 35 sodium sulfate of 1 ~ 2 weight part can be replaced the 1-isobutyl-3,5-dimethylhexylphosphoric acid sylvite of 1 ~ 2 weight part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491386.5A CN105176508A (en) | 2015-08-04 | 2015-08-04 | Surfactant for blending active water instead of thin oil in thickened oil |
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|---|---|---|---|
| CN201510491386.5A CN105176508A (en) | 2015-08-04 | 2015-08-04 | Surfactant for blending active water instead of thin oil in thickened oil |
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| CN105176508A true CN105176508A (en) | 2015-12-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113881421A (en) * | 2021-12-07 | 2022-01-04 | 德仕能源科技集团股份有限公司 | Composition for reducing minimum miscible pressure of carbon dioxide and crude oil and preparation method thereof |
| CN116622344A (en) * | 2023-05-24 | 2023-08-22 | 河北硅谷化工有限公司 | High-temperature-resistant viscosity reducer for drilling fluid and preparation method thereof |
-
2015
- 2015-08-04 CN CN201510491386.5A patent/CN105176508A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113881421A (en) * | 2021-12-07 | 2022-01-04 | 德仕能源科技集团股份有限公司 | Composition for reducing minimum miscible pressure of carbon dioxide and crude oil and preparation method thereof |
| CN116622344A (en) * | 2023-05-24 | 2023-08-22 | 河北硅谷化工有限公司 | High-temperature-resistant viscosity reducer for drilling fluid and preparation method thereof |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |