CN104119851A - Novel viscosity reducer for viscous oil - Google Patents
Novel viscosity reducer for viscous oil Download PDFInfo
- Publication number
- CN104119851A CN104119851A CN201410294188.5A CN201410294188A CN104119851A CN 104119851 A CN104119851 A CN 104119851A CN 201410294188 A CN201410294188 A CN 201410294188A CN 104119851 A CN104119851 A CN 104119851A
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- Prior art keywords
- viscosity
- heavy crude
- oil
- amonio
- crude thinner
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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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
Abstract
The invention relates to a novel viscosity reducer for viscous oil, and the novel viscosity reducer is a chemical agent mainly used for viscosity reduction and cold production of viscous oil. The viscosity reducer disclosed by the invention has the advantages of convenience in construction, high viscosity reduction rate, low price and the like. Laboratory tests and field applications show that the viscosity reducer disclosed by the invention is applicable to conventional (borehole) viscosity reduction mining, oil layer viscosity reduction and the like of a viscous oil well and can be used for solving the problem of the oil layer blockage at an immediate vicinity of a wellbore caused by large viscosity of crude oil or micro-emulsion. In summary, the viscosity reducer is wide in applicable range and significant in effect and can adapt to the viscosity reduction of various viscous oil.
Description
Technical field
The present invention relates to a kind of novel heavy crude thinner, belong to oilfield chemistry field.
Background technology
Along with the increase of viscous oil recovery amount, its density is large, viscosity is high, the feature of poor fluidity has been brought very large difficulty to the exploitation in oil field and the conveying of crude oil.According to the inner compositional analysis of viscous crude family, it is rich in ammonia nitriding compound, and as the macro-radical such as colloid, bituminous matter, the gathering that very easily interconnects of such group, causes system viscosity sharply to increase, mobility variation.Because viscous oil recovery difficulty is large and recovery ratio is lower, in recovery process, need to select different reoovery methods according to strata condition and thick oil properties.Conventional reoovery method has heating exploitation, mixes thin oil method and adds chemical agent viscosity reduction method, and first two reoovery method is subject to the restriction of the energy and resource, therefore adopts chemical agent viscosity reduction to be subject to common concern.At present petroleum industrial circle common concern extremely both at home and abroad, to be considered to the most promising the Technology of Heavy Oil Recovery be to adopt to add fluidity improver, to reduce condensation point and the viscosity of crude oil, makes it be easy to flow.The method is not only easy and simple to handle, and can accompanied by substantial power saving.
Reduce thick oil viscosity and contribute to reduce exploitation, carry cost, increase economic efficiency.In the viscous crude composition of China, colloid, bitum too high levels are the full-bodied major causes of viscous crude.In viscous crude, colloid, bitum gathering, will cause thick oil viscosity to increase, if colloid, bituminous matter effectively can be scatter in oil, just can reduce significantly viscosity of thickened oil.Long chain fatty acid ester and derivative thereof have the effect that can effectively disperse resin and asphalt in viscous crude just, can use as heavy crude thinner.At present, synthetic oil-soluble viscosity reducer is taking high-molecular copolymer as main, but the deficiencies such as ubiquity viscosity-reducing performance is inadequate, Financial cost is higher, complex operation.
Therefore,, for the existing above-mentioned shortcomings of current conventional Heavy Oil chemical viscosity reduction agent, urgent need will be developed a kind of Novel thick oiling and learn viscosity-depression agent, to meet industrial requirement.
Summary of the invention
Therefore, the present invention proposes a kind of novel heavy crude thinner, be made up of dodecanol polyethenoxy ether sulphonate, auxiliary demulsifying agent, amphoterics, permeate agent, water, have higher HLB value, the aqueous solution has lower surface tension.
Novel heavy crude thinner of the present invention, this viscosity-depression agent is composed of the following components by weight percentage:
Auxiliary demulsifying agent of the present invention is one or more in ethylene group two (tetradecyl alkyl dimethyl ammonium chloride), trimethylene base two (dodecyl polyoxyethylene ammonium chloride), trimethylene base two (decyl polyoxyethylene/polyoxypropylene base chlorine/brometo de amonio), ethylene groups [(eight amido propyl dimethyl/myristamide propyl-dimethyls) chlorine/brometo de amonio], diethyl maleate support group two (octyl dimethyl brometo de amonio).Be preferably diethyl maleate support group two (octyl dimethyl brometo de amonio).
Amphoterics of the present invention is one or more in lauryl hydroxyl sulfo betaine, lauroyl amido CAB, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazole quinoline trimethyl-glycine.
Water of the present invention is preferably concentrated water.
The present invention also aims to provide the preparation method of above-mentioned heavy crude thinner.
For achieving the above object, the invention provides a kind of heavy crude thinner, it is made up of dodecanol polyethenoxy ether sulphonate, auxiliary demulsifying agent, amphoterics, permeate agent and water, wherein, in the total mass of this viscosity-depression agent, dodecanol polyethenoxy ether sulphonate is 0.20～3%, auxiliary demulsifying agent is 0.08～0.20%, amphoterics is 0.05～0.15%, and permeate agent is 0.05～0.15%, and all the other add water to 100%.
The object of this invention is to provide a kind of heavy crude thinner, improve heavy oil cold flow production state of the art.Wettability of the present invention, detergency, foaming power and dispersive ability are all very strong, and viscosity reduction ability is particularly outstanding.
The present invention has following advantage compared with currently available products:
1, easy construction, only needs to inject stratum after thin up.
2, viscosity reducing effect is good, applied widely.The reducing thick oil viscosity rate of each elephant all can reach more than 98%.
3, cheap, can extensively promote.
4, compare heavy crude heat extraction, the present invention can greatly reduce energy consumption, protection of the environment.
Embodiment
Below by embodiment, preparation method of the present invention and using method are described.
Embodiment 1
The concrete preparation method of heavy crude thinner of the present invention:
1, the synthetic method of dodecanol polyethenoxy ether sulphonate III:
According to prior art, be mainly divided into four steps: first by dodecanol Soxylat A 25-7 and epichlorohydrin reaction, obtain product I: second step, product I and NaOH reaction, obtain product II; The 3rd step, product II and sodium bisulfite carry out sulfonation reaction, obtain product dodecanol polyethenoxy ether sulphonate III:
2, auxiliary demulsifying agent of the present invention is one or more in ethylene group two (tetradecyl alkyl dimethyl ammonium chloride), trimethylene base two (dodecyl polyoxyethylene ammonium chloride), trimethylene base two (decyl polyoxyethylene/polyoxypropylene base chlorine/brometo de amonio), ethylene groups [(eight amido propyl dimethyl/myristamide propyl-dimethyls) chlorine/brometo de amonio], diethyl maleate support group two (octyl dimethyl brometo de amonio).Be preferably diethyl maleate support group two (octyl dimethyl brometo de amonio), can buy from market.
3, amphoterics of the present invention is one or more in lauryl hydroxyl sulfo betaine, lauroyl amido CAB, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazole quinoline trimethyl-glycine, and above amphoterics all can be bought and obtain from market.
4, dodecanol polyethenoxy ether sulphonate of the present invention, auxiliary demulsifying agent, amphoterics, permeate agent and water are carried out to proportioning in following ratio and obtain final viscosity-depression agent:
5, concrete preparation method's preparation process is as follows: under normal pressure, first 1000g water is joined in the four-hole boiling flask that electric heating cover is housed, start agitator, adjusting rotary speed is 50-100 rev/min, heats up simultaneously, and temperature is controlled at 55 DEG C of left and right;
Then add lentamente successively in order dodecanol polyethenoxy ether sulphonate 30g, diethyl maleate support group two (octyl dimethyl brometo de amonio) 4g, lauryl hydroxyl sulfo betaine 3g, two (the octyl dimethyl brometo de amonio) 3g of diethyl maleate support group, after the mix and blend of 60-90 minute, supply water to 2000g, obtain heavy crude thinner of the present invention.
6, implement at the scene in viscosity reduction process, can directly use concentrated water to be configured heavy crude thinner of the present invention.
Embodiment 2
According to technical solutions according to the invention, the heavy crude thinner of preparation of the present invention is mainly used in viscous crude cold the adopting of handling up, and concrete implementation step is as follows:
1, according to oil well situation, the heavy crude thinner of preparation of the present invention is injected to stratum by high-pressure pump.
2, after construction, underground viscosity of crude reduces, and can start to recover the oil.
3, after exploitation for some time, viscosity of crude rises, crude oil extraction difficulty, repeating step 1.
So repeatedly realize viscous crude cold the adopting of handling up.
Embodiment 3
By the viscous crude sample at the each oil producing region of Shengli Oil Field collection in worksite, use the heavy crude thinner of preparation of the present invention to carry out viscosity reduction test to the viscous crude sample gathering, result shows that the heavy crude thinner viscosity reducing effect of preparation of the present invention is remarkable.
The heavy crude thinner viscosity reducing effect data of table 1 preparation of the present invention
Experimental result of the present invention shows: heavy crude thinner prepared by the present invention can adapt to viscosity reduction and the successful of all kinds of viscous crude, has greatly promoted reducing thick oil viscosity rate.
Embodiment 4
Heavy crude thinner prepared by the present invention in east pungent many mouthfuls of heavy oil wells carry out field popularization application, respond well, concrete test-results is as shown in table 2:
Heavy crude thinner rig-site utilization situation prepared by table 2 the present invention
Result shows: the heavy crude thinner of preparation of the present invention shows in shop experiment and rig-site utilization, and the heavy crude thinner of preparing by injecting the present invention makes stopping production or the basic oil well stopping production again fuel-displaced, has reached the object of expection.
In a word, the heavy crude thinner of preparation of the present invention is not only applicable to the exploitation of heavy oil wells routine (pit shaft) viscosity reduction, the oil reservoir viscosity reduction etc. of heavy oil block, can be used for removing the oil layer blocking of or immediate vicinity of wellbore that microemulsified cause large because of viscosity of crude simultaneously yet.
To sum up, the heavy crude thinner of preparation of the present invention is applied widely, and effect is remarkable, can adapt to the viscosity reduction of all kinds of viscous crude.
Claims (5)
1. a novel heavy crude thinner, is characterized in that, this viscosity-depression agent is composed of the following components by weight percentage:
2. heavy crude thinner according to claim 1, it is characterized in that, described auxiliary demulsifying agent is one or more in ethylene group two (tetradecyl alkyl dimethyl ammonium chloride), trimethylene base two (dodecyl polyoxyethylene ammonium chloride), trimethylene base two (decyl polyoxyethylene/polyoxypropylene base chlorine/brometo de amonio), ethylene groups [(eight amido propyl dimethyl/myristamide propyl-dimethyls) chlorine/brometo de amonio], diethyl maleate support group two (octyl dimethyl brometo de amonio).
3. heavy crude thinner according to claim 1, is characterized in that, described amphoterics is one or more in lauryl hydroxyl sulfo betaine, lauroyl amido CAB, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazole quinoline trimethyl-glycine.
4. heavy crude thinner according to claim 2, is characterized in that, described auxiliary demulsifying agent is preferably diethyl maleate support group two (octyl dimethyl brometo de amonio).
5. heavy crude thinner according to claim 1, is characterized in that, described water is preferably concentrated water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410294188.5A CN104119851A (en) | 2014-06-27 | 2014-06-27 | Novel viscosity reducer for viscous oil |
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| CN201410294188.5A CN104119851A (en) | 2014-06-27 | 2014-06-27 | Novel viscosity reducer for viscous oil |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830295A (en) * | 2015-05-08 | 2015-08-12 | 中国石油天然气股份有限公司 | Activating agent for water plugging and water-plugging thickened oil activating agent prepared from same |
| CN105542742A (en) * | 2016-02-29 | 2016-05-04 | 扬州润达油田化学剂有限公司 | Heavy oil viscosity reducer and preparation method thereof |
| CN106032466A (en) * | 2015-03-20 | 2016-10-19 | 中国石油化工股份有限公司 | Viscosity reducer by emulsification for heavy oil |
| CN106190079A (en) * | 2016-08-10 | 2016-12-07 | 上海亚润能源技术有限公司 | A kind of multi-functional viscous crude inorganic agent and preparation method thereof |
| CN106398676A (en) * | 2016-08-26 | 2017-02-15 | 大连百奥泰科技有限公司 | Temperature-tolerant salt-tolerant thickened oil emulsifying viscosity reducer, and applications thereof |
| CN108570315A (en) * | 2017-03-08 | 2018-09-25 | 中国石油化工股份有限公司 | Application, acidification heavy crude thinner and the method for reducing acidification viscosity of thickened oil of imidazoles and/or imdazole derivatives |
| WO2020000357A1 (en) * | 2018-06-29 | 2020-01-02 | Dow Global Technologies Llc | Surfactant composition for reducing viscosity of heavy crude oil |
| CN111471485A (en) * | 2019-01-23 | 2020-07-31 | 中国石油化工股份有限公司 | Method for removing sodium salt from hydrocarbon oil |
| CN116179177A (en) * | 2023-04-23 | 2023-05-30 | 西南石油大学 | Preparation method of compound surfactant thickened oil microemulsion |
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2014
- 2014-06-27 CN CN201410294188.5A patent/CN104119851A/en active Pending
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032466A (en) * | 2015-03-20 | 2016-10-19 | 中国石油化工股份有限公司 | Viscosity reducer by emulsification for heavy oil |
| CN106032466B (en) * | 2015-03-20 | 2018-08-28 | 中国石油化工股份有限公司 | A kind of emulsifying and viscosity-reducing agent for condensed oil |
| CN104830295A (en) * | 2015-05-08 | 2015-08-12 | 中国石油天然气股份有限公司 | Activating agent for water plugging and water-plugging thickened oil activating agent prepared from same |
| CN104830295B (en) * | 2015-05-08 | 2018-01-05 | 中国石油天然气股份有限公司 | A kind of water blockoff activator and the water blockoff viscous crude activator being made from it |
| CN105542742A (en) * | 2016-02-29 | 2016-05-04 | 扬州润达油田化学剂有限公司 | Heavy oil viscosity reducer and preparation method thereof |
| CN106190079A (en) * | 2016-08-10 | 2016-12-07 | 上海亚润能源技术有限公司 | A kind of multi-functional viscous crude inorganic agent and preparation method thereof |
| CN106398676A (en) * | 2016-08-26 | 2017-02-15 | 大连百奥泰科技有限公司 | Temperature-tolerant salt-tolerant thickened oil emulsifying viscosity reducer, and applications thereof |
| CN108570315A (en) * | 2017-03-08 | 2018-09-25 | 中国石油化工股份有限公司 | Application, acidification heavy crude thinner and the method for reducing acidification viscosity of thickened oil of imidazoles and/or imdazole derivatives |
| WO2020000357A1 (en) * | 2018-06-29 | 2020-01-02 | Dow Global Technologies Llc | Surfactant composition for reducing viscosity of heavy crude oil |
| CN111471485A (en) * | 2019-01-23 | 2020-07-31 | 中国石油化工股份有限公司 | Method for removing sodium salt from hydrocarbon oil |
| CN111471485B (en) * | 2019-01-23 | 2021-12-17 | 中国石油化工股份有限公司 | Method for removing sodium salt from hydrocarbon oil |
| CN116179177A (en) * | 2023-04-23 | 2023-05-30 | 西南石油大学 | Preparation method of compound surfactant thickened oil microemulsion |
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