CN104694105A - Oil-displacing agent - Google Patents
Oil-displacing agent Download PDFInfo
- Publication number
- CN104694105A CN104694105A CN201310664059.6A CN201310664059A CN104694105A CN 104694105 A CN104694105 A CN 104694105A CN 201310664059 A CN201310664059 A CN 201310664059A CN 104694105 A CN104694105 A CN 104694105A
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- Prior art keywords
- displacing agent
- oil
- dibromobutane
- synthesis
- property research
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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
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to synthesis and property research on an oil-displacing agent. The oil-displacing agent is characterized by being prepared by enabling alkyl dimethyl tertiary amine and dibromobutane to react in an ethanol solvent, wherein the amount of alkyl dimethyl tertiary amine in the system is controlled to be within 180-260g, the amount of dibromobutane is controlled to be 50-100g, the addition amount of ethanol is controlled to be 70-120mL, the reaction temperature is 60-90 DEG C, the reaction time is 24-120h hours, and recrystalization of ethyl acetate is implemented for 2-3 times. Compared with an ordinary surfactant, the Gemini surfactant provided by the invention is relatively high in viscosity and surface activity, and has good application prospect in the field of tertiary oil recovery.
Description
Invention field
The present invention relates to a kind of synthesis and property research of novel oil-displacing agent, belong to field of oilfield chemistry.
Background of invention
Along with the continuous exploitation in oil field, the reserves in oil field constantly decline, secondary oil recovery reaches economic limit, after water drive, still have the crude oil of about 65% to stay underground, fail the irreducible oil of extraction and surplus oil for secondary oil recovery, adopt the method injected work agent to stratum or introduce other energy to be called tertiary oil recovery.Chemical combined flooding technology is exactly the tertiary oil recovery technology grown up the eighties in 20th century, ASP can make oil recovery rate improve 20% again, combination flooding technology will be effectively utilized to increase substantially oil recovery factor, oil/water interfacial tension must be down to the 10-3mN/m order of magnitude, must by adding alkali in a large number if single conventional surfactants wants to reach this requirement, but alkali add membership increase construction and expense can cause down-hole string corrode and formation damage, the tensio-active agent therefore how obtaining a kind of high surface has become the emphasis studied in the last few years.The appearance of Gemini surface active solves this problem, and it is by adding the extensive attention that the feature that just greatly can reduce oil/water interfacial tension obtains people on a small quantity.
Patent of the present invention in conjunction with the problems referred to above, and effectively utilizes the feature of Gemini surface active to be introduced into field of oilfield chemistry, and is measured its performance by laboratory experiment, for the rig-site utilization of later Gemini surface active provides theories integration.
Summary of the invention
The present invention relates to a kind of synthesis and property research of novel oil-displacing agent, it is characterized in that:
Above-mentioned raw materials preferably from: one of Dodecyl Dimethyl Amine, dodecyldimethylamine base tertiary amine, hexadecyldimethyl benzyl ammonium tertiary amine, octadecyldimethyl tertiary amine or combination;
Another raw material above-mentioned preferably from: one of 1,2-dibromobutane, 1,3-dibromobutane, Isosorbide-5-Nitrae-dibromobutane or combination;
Above-mentioned other auxiliary agents are preferably from dehydrated alcohol, ethyl acetate.
Concrete operation method: accurately take a certain amount of alkyl dimethyl tertiary amide and dibromobutane is placed in tool plug there-necked flask, add a certain amount of dehydrated alcohol as reaction solvent, start stirring, regulation system temperature is 60 ~ 90 DEG C, after reaction 24 ~ 120h, place and be cooled to room temperature, reaction product is placed in Rotary Evaporators, steam ethanol, obtain yellow waxy thing.After above-mentioned yellow waxy thing re-crystallizing in ethyl acetate 2 ~ 3 times, under vacuum drying oven, dry to obtain white powder.In system, the amount of alkyl dimethyl tertiary amide controls between 180 ~ 260g, and the amount of dibromobutane controls between 50 ~ 100g, and the dosage of ethanol controls at 70 ~ 120mL.
Accompanying drawing explanation
Fig. 1 adopts cloth viscometer to adopt cloth viscometer, at water bath with thermostatic control 50 DEG C and shearing rate 5s
-1condition under the viscosity of working sample, experimental result is as table 1.Gemini surface active agent just has very high viscosity under lower concentration as seen from Figure 1, by increasing the viscosity injecting water, reducing oil and water mobility ratio, improve sweep efficiency.Because sweep efficiency is one of principal element improving oil recovery factor, so can reach by adding Gemini surface active agent the object improving recovery ratio.
Table 2 adopts drop-volume method to measure Gemini surface active, sodium lauryl sulphate and the surface tension of Trimethyllaurylammonium bromide solution under different concns, and result as shown in Figure 2.As seen from Figure 2, cationic Gemini surfactant has minimum surfactivity (500mg/L) and minimum surface tension (28mN/m), compare with dodecyl methyl brometo de amonio with the Surfactant SDS of strand, Gemini surface active agent has better surfactivity.Therefore water-oil interface just can be down to ultralow by Gemini surface active agent at very low concentrations, thus reduce oil droplet by the merit required for narrow duct, reduce crude oil resistance, can use as the better oil-displacing agent of one.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described, but be not limited only to this.
Embodiment 1: raw material and composition: alkyl dimethyl tertiary amide 180g, dibromobutane: 75g, ethanol 90mL
Concrete preparation method: accurately take above-mentioned raw materials and be placed in tool plug there-necked flask, add dehydrated alcohol as reaction solvent, start stirring, regulation system temperature is 75 DEG C, after reaction 60h, places and is cooled to room temperature, reaction product is placed in Rotary Evaporators, steams ethanol, obtain yellow waxy thing.After above-mentioned yellow waxy thing re-crystallizing in ethyl acetate 2 ~ 3 times, under vacuum drying oven, dry to obtain white powder.
Embodiment 2: alkyl dimethyl tertiary amide 220g, dibromobutane 85g, ethanol 100mL
Concrete preparation method is with embodiment 1.
Embodiment 3: alkyl dimethyl tertiary amide 245g, dibromobutane 80g, ethanol 105mL
Concrete preparation method is with embodiment 1.
Claims (6)
1. the present invention relates to a kind of novel oil-displacing agent synthesis and property research, it is characterized in that: above-mentioned raw materials preferably from: one of Dodecyl Dimethyl Amine, dodecyldimethylamine base tertiary amine, hexadecyldimethyl benzyl ammonium tertiary amine, octadecyldimethyl tertiary amine or combination.
2. novel oil-displacing agent as claimed in claim 1 synthesis and property research, another raw material above-mentioned preferably from: one of 1,2-dibromobutane, 1,3-dibromobutane, Isosorbide-5-Nitrae-dibromobutane or combination.
3. the synthesis and property research of novel oil-displacing agent as claimed in claim 1, above-mentioned other auxiliary agents are preferably from dehydrated alcohol, ethyl acetate.
4. the synthesis and property research of novel oil-displacing agent as claimed in claim 1, in system, the amount of alkyl dimethyl tertiary amide controls between 180 ~ 260g, and the amount of dibromobutane controls between 50 ~ 100g, and the dosage of ethanol controls at 70 ~ 120mL.
5. the synthesis and property research of novel oil-displacing agent as claimed in claim 1, temperature of reaction is 60 ~ 90 DEG C, and the reaction times is 24 ~ 120h.
6. the synthesis and property research of novel oil-displacing agent as claimed in claim 1, the number of times of re-crystallizing in ethyl acetate is 2 ~ 3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664059.6A CN104694105A (en) | 2013-12-09 | 2013-12-09 | Oil-displacing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664059.6A CN104694105A (en) | 2013-12-09 | 2013-12-09 | Oil-displacing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104694105A true CN104694105A (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310664059.6A Pending CN104694105A (en) | 2013-12-09 | 2013-12-09 | Oil-displacing agent |
Country Status (1)
| Country | Link |
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| CN (1) | CN104694105A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176504A (en) * | 2015-09-25 | 2015-12-23 | 西南石油大学 | Multi-hydroxyl organic amine water-based drilling fluid shale inhibitor and preparation method thereof |
| CN116285934A (en) * | 2023-01-31 | 2023-06-23 | 西南石油大学 | Gel channeling inhibitor suitable for expanding sweep volume of carbon dioxide flooding of ultralow permeability reservoir and application thereof |
-
2013
- 2013-12-09 CN CN201310664059.6A patent/CN104694105A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176504A (en) * | 2015-09-25 | 2015-12-23 | 西南石油大学 | Multi-hydroxyl organic amine water-based drilling fluid shale inhibitor and preparation method thereof |
| CN116285934A (en) * | 2023-01-31 | 2023-06-23 | 西南石油大学 | Gel channeling inhibitor suitable for expanding sweep volume of carbon dioxide flooding of ultralow permeability reservoir and application thereof |
| CN116285934B (en) * | 2023-01-31 | 2024-05-28 | 西南石油大学 | Gel channeling inhibitor suitable for expanding sweep volume of carbon dioxide flooding of ultralow permeability reservoir and application thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |
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| WD01 | Invention patent application deemed withdrawn after publication |