CN1560181A - Preparation process of composite displacing oil agent for tertiary oil production - Google Patents
Preparation process of composite displacing oil agent for tertiary oil production Download PDFInfo
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- CN1560181A CN1560181A CNA2004100234886A CN200410023488A CN1560181A CN 1560181 A CN1560181 A CN 1560181A CN A2004100234886 A CNA2004100234886 A CN A2004100234886A CN 200410023488 A CN200410023488 A CN 200410023488A CN 1560181 A CN1560181 A CN 1560181A
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- dimethylbenzene
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- water
- oleic acid
- oil
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Abstract
The invention provides a tertiary oil recovery compound oil flooding agent preparing method, using oleic acid, humic acid, ethylenediamine, NaOH, water and dimethylbenzene as raw materials, concretely adding ethylenediamine, oleic acid, humic acid and dimethylbenzene in a reaction kettle with condenser and liquid-distributor, starting a blender, raising temperature to 150 deg.C and reacting for 2-4 hours, and during reacting, the dimethylbenzene flows back and the water is separated out. After completing reaction, it evaporates out the dimethylbenzene (recyclable). It charges condensing water in the kettle to lower the temperature to 100 deg.C, adds in water and NaOH, keep const temperature at 70 deg.C, stirs and reacts for 2-3 hours and obtains the product. The product has wide sources of raw materials, high oil flooding efficiency and complete mechanism; good compatibility with surfactants and polymers; good inhibiting effect on fouling of injection-producing system in oil flooding of alkali-containing systems.
Description
Technical field:
The present invention relates to a kind of preparation method of oilfield chemical auxiliary, in particular for the preparation method of the compound oil displacement agent of tertiary oil recovery.
Background technology:
Chemical flooding mainly contains polymer flooding, surfactant flood in the tertiary oil recovery, alkali drives and combination flooding, and combination flooding is the displacement mode that combines of two or more chemical agent arbitrarily during polymer flooding, surfactant flood, alkali drive.Domestic and international application amount maximum is polymer flooding at present, because the oil field of the suitable polymer flooding of China is few, shortcomings such as sweep efficiency is low, salt resistance ability is poor, cost height are difficult to apply and surfactant flooding exists.Alkali drives and then has the problems such as system fouling and output liquid difficult treatment of adopting of annotating, and therefore presses for the flooding system of development of new cheapness.
Summary of the invention:
The purpose of this invention is to provide a kind of cheap, use range wide, can improve the preparation method that sweep efficiency can improve the cheap compound oil displacement agent of used for tertiary oil recovery of displacement efficiency again.
The object of the present invention is achieved like this,
(1) raw material and the ratio of the cheap compound oil displacement agent of used for tertiary oil recovery:
Oleic acid 2.0%-9.0%
Humic acids 12.5%-23.0%
Quadrol 1.0%-7.0%
Sodium hydroxide 5.0%-8.0%
Water 20.0%-29.0%
Dimethylbenzene 24.0%-29.0%
(2) preparation method of the cheap compound oil displacement agent of used for tertiary oil recovery:
1. add dimethylbenzene, oleic acid, humic acids and quadrol in the reactor of band condenser and skimmer, start agitator, be warming up to 150 ℃ of reactions 2 hours-4 hours, refluxing xylene, moisture go out in the reaction process;
2. dimethylbenzene is steamed (can reuse) after reaction is finished;
3. the logical water of condensation of reactor is cooled to 100 ℃, adds entry and sodium hydroxide, 70 ℃ of constant temperature, and stirring reaction 2 hours-3 hours gets the packing of product.
Embodiment:
Below in conjunction with embodiment preparation process of the present invention is described.
Embodiment:
1m to band condenser and skimmer
3Add dimethylbenzene 400kg, oleic acid 120kg, humic acids 310kg and quadrol 63kg in the stainless steel cauldron, start agitator, be warming up to 150 ℃ of reactions 3 hours, refluxing xylene, moisture go out in the reaction process.After finishing, reaction dimethylbenzene is steamed (can reuse).Reactor leads to water of condensation, is cooled to 100 ℃, adds 400kg water and 107kg sodium hydroxide, 70 ℃ of constant temperature, and stirring reaction 2 hours gets 1.0 tons-1.1 tons of products, and product is deposited with the plastics barreled.
The advantage of products obtained therefrom of the present invention:
1. starting material wide material sources, production cost is low.
2. oil displacement efficiency height, mechanism are comprehensive.Products obtained therefrom of the present invention has and improves sweep efficiency and displacement efficiency dual function, and working concentration is 0.5% a product of the present invention when carrying out the displacement of reservoir oil, and oil recovery factor can improve 5%-10%.
3. good with tensio-active agent, polymkeric substance compatibleness.Products obtained therefrom of the present invention can mix with surfactant oil displacement, polymkeric substance arbitrary proportion, and can improve the loss that tensio-active agent reduces the ability of interfacial tension and effectively reduces tensio-active agent; Polymkeric substance there is significant provide protection.
4. the fouling that contains injection and extraction system in the alkali systems displacement of reservoir oil there is good restraining effect, when the working concentration of products obtained therefrom of the present invention can be eliminated scale problems greater than 0.2% the time fully.
5. wide adaptability.Suitable formation temperature is that 20 ℃-120 ℃, suitable formation water salinity are at 0mg/L-50000mg/L; Suitable in-place oil viscosity is 1mPa.s-2000mPa.s; The rate of permeation of suitable oil reservoir is 0.005 μ m
2-500 μ m
2
Claims (1)
1. the preparation method of a used for tertiary oil recovery compound oil displacement agent is characterized in that raw material and ratio are:
Oleic acid 2.0%-9.0%
Humic acids 12.5%-23.0%
Quadrol 1.0%-7.0%
Sodium hydroxide 5.0%-8.0%
Water 20.0%-29.0%
Dimethylbenzene 24.0%-29.0%
The preparation method comprises following three steps:
1. add dimethylbenzene, oleic acid, humic acids and quadrol in the reactor of band condenser and skimmer, start agitator, be warming up to 150 ℃ of reactions 2 hours-4 hours, refluxing xylene, moisture go out in the reaction process;
2. after reaction is finished dimethylbenzene is steamed;
3. the logical water of condensation of reactor is cooled to 100 ℃, adds entry and sodium hydroxide, 70 ℃ of constant temperature, and stirring reaction 2 hours-3 hours gets product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023488 CN1244750C (en) | 2004-02-25 | 2004-02-25 | Preparation process of composite displacing oil agent for tertiary oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410023488 CN1244750C (en) | 2004-02-25 | 2004-02-25 | Preparation process of composite displacing oil agent for tertiary oil production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560181A true CN1560181A (en) | 2005-01-05 |
| CN1244750C CN1244750C (en) | 2006-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410023488 Expired - Fee Related CN1244750C (en) | 2004-02-25 | 2004-02-25 | Preparation process of composite displacing oil agent for tertiary oil production |
Country Status (1)
| Country | Link |
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| CN (1) | CN1244750C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184036A (en) * | 2011-12-29 | 2013-07-03 | 中国石油化工股份有限公司 | Oil-based drilling fluid filtrate reducer containing cross-linked structure, and preparation method |
| CN110713824A (en) * | 2019-09-24 | 2020-01-21 | 大港油田集团有限责任公司 | Anti-adsorption composite oil displacement system and preparation method thereof |
| CN114989423A (en) * | 2022-06-09 | 2022-09-02 | 中国石油天然气集团有限公司 | Sedimentation stabilizing composition, sedimentation stabilizing agent and preparation method and application thereof |
-
2004
- 2004-02-25 CN CN 200410023488 patent/CN1244750C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184036A (en) * | 2011-12-29 | 2013-07-03 | 中国石油化工股份有限公司 | Oil-based drilling fluid filtrate reducer containing cross-linked structure, and preparation method |
| CN103184036B (en) * | 2011-12-29 | 2016-09-28 | 中国石油化工股份有限公司 | A kind of fluid loss additive of oil-base drilling fluid containing cross-linked structure and preparation method |
| CN110713824A (en) * | 2019-09-24 | 2020-01-21 | 大港油田集团有限责任公司 | Anti-adsorption composite oil displacement system and preparation method thereof |
| CN110713824B (en) * | 2019-09-24 | 2021-09-07 | 大港油田集团有限责任公司 | Anti-adsorption composite oil displacement system and preparation method thereof |
| CN114989423A (en) * | 2022-06-09 | 2022-09-02 | 中国石油天然气集团有限公司 | Sedimentation stabilizing composition, sedimentation stabilizing agent and preparation method and application thereof |
| CN114989423B (en) * | 2022-06-09 | 2023-09-26 | 中国石油天然气集团有限公司 | Sedimentation stabilizing composition, sedimentation stabilizing agent and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1244750C (en) | 2006-03-08 |
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Granted publication date: 20060308 Termination date: 20110225 |