CN104694103A - Surfactant compounded system with oil reservoir adaptability - Google Patents
Surfactant compounded system with oil reservoir adaptability Download PDFInfo
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- CN104694103A CN104694103A CN201310659350.4A CN201310659350A CN104694103A CN 104694103 A CN104694103 A CN 104694103A CN 201310659350 A CN201310659350 A CN 201310659350A CN 104694103 A CN104694103 A CN 104694103A
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- oil
- surfactant
- displacing agent
- bromide
- interfacial tension
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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 surfactant compounded system with oil reservoir adaptability. The surfactant compounded system consists of nonionic surfactants A, anionic surfactants B and cationic surfactants C. An oil displacement agent related by the invention has the advantages that the Shengli oil field crude oil/water interface tension can be reduced to an ultra-low state in a short time, in addition, certain oil phase adaptability is realized, an important effect is achieved in the aspect of improving the crude oil yield, secondly, the use concentration of the surfactant of the system is low, the salt resistance is good, and the applicability to stratum mineralized water is good.
Description
Invention field
The present invention relates to a kind of preparation with the tensio-active agent ternary system of oil reservoir conformability, belong to technical field of oilfield chemistry.
Background technology
Oil is as strategic resource, and it is effectively exploited and utilizes very important.Because oil is nonrenewable resource, along with improving constantly of the level of the productive forces, society sharply rises to petroleum demand, and find that the opportunity of larger reserves oil reservoir reduces again, the recovery ratio of raising developed field is got most of the attention, and taking technique means to improve recovery ratio has become the necessary production measure had a high potential.Research has for many years proposed multiple intensified oil reduction technology, and wherein chemical process is as polymer flooding, caustic waterflooding, surfactant flooding, alkali/Surfactant/Polymer combination flooding, is develop to improve recovery efficiency technique faster.
The tensio-active agent being applied to the displacement of reservoir oil at present mainly contains sulfonated petro-leum, carboxylate salt, APG and Anionic Gemini Surfactant, latter two due to cost comparatively Gao Erwei be promoted, the salt tolerance of carboxylate fluorocarbon surfactant is poor, adsorption losses is larger, and raw material composition is complicated, different batches product performance also have larger difference, and therefore sulfonate is surfactant oil displacement most widely used at present.But because the interfacial activity of sulfonated petro-leum is not ideal enough, oil water interfacial tension can not be down to ultralow, therefore often need to add cosurfactant.Find part replace or replace sulfonate surfactant completely, be the development target of high-efficient oil-displacing agent always.
Can oil water interfacial tension be down to ultralow (10
-3mN.m
-1), be the important indicator of screening chemical oil displacement agent.The height of oil water interfacial tension, depends on the molecular composition in interfacial layer, and the hydrophobicity of oil phase is stronger, and larger with aqueous phase difference, interfacial tension is higher.Tensio-active agent is in water-oil interface absorption and enrichment, and hydrophilic group stretches to aqueous phase, and oleophilic group stretches to oil phase, interfacial energy is reduced greatly, interfacial tension lowering.Tensio-active agent reduces the ability of oil water interfacial tension, both relevant with the molecular structure of tensio-active agent, forms again relevant with envrionment conditions with oil phase.
Because crude oil composition is complicated, composition transfer is large, therefore for reservoir condition screening oil-displacing agent, not only workload is large, and the oil-displacing agent with oil reservoir conformability is often difficult to obtain, often change a block, all need again to screen oil-displacing agent formula, become the difficult problem that restriction chemical flooding improves recovery ratio development.Surfactant compound can solve the problem preferably, and chooses suitable tensio-active agent and ratio to obtain certain oil phase adaptability, has certain difficulty.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of surfactant compound that utilizes and prepare the oil-displacing agent with oil reservoir conformability.
The oil-displacing agent that the present invention produces can use under low concentration, good to oil phase adaptability, and can use under wider salinity condition.
Technical scheme of the present invention is as follows:
There is a surfactant compound oil-displacing agent for oil reservoir conformability, it is characterized in that, be made up of nonionogenic tenside A, anion surfactant B and cats product C, wherein,
Surfactant A is selected from fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, alkylol amide Soxylat A 25-7, alkylol amide (1:1 type);
Surfactant B is selected from sulfonated α-olefin, alkyl-sulphate, sulfonated petro-leum, fatty-acid ethyl ester sulfonate, alkyl carboxylate, sultaine or carboxybetaine;
Tensio-active agent C is selected from Trimethyllaurylammonium bromide, Tetradecyl Trimethyl Ammonium Bromide, cetyl trimethylammonium bromide, Cetyltrimethylammonium bromide
The mass ratio of above-mentioned A, B, C is (1 ~ 8): (1 ~ 5): (1 ~ 4)
The above-mentioned a kind of preparation method with the surfactant compound system oil-displacing agent of oil reservoir conformability of the present invention, step is as follows:
A, B are mixed in proportion, when constant temperature 25-40 DEG C, add a certain amount of mineralized water, Keep agitation, until system becomes the single liquid phase of clear, continuing slowly to add cats product C by a certain percentage when stirring, continuing to be stirred to solution clear to single liquid phase, and making the total mass concentration of A, B and C be 0.05 ~ 0.6wt%.
When the present invention applies, the salinity range that described oil-displacing agent can tolerate is: total mineralization 0-80,000ppm, calcium ions and magnesium ions total concn 0-1,000ppm.
The oil-displacing agent that the present invention produces, can be applicable to the low Permeability reservoir for improving recovery factor needing more low interfacial tension.Below technical characterstic and the excellent results explanation of oil-displacing agent of the present invention:
The present invention chooses polar head good hydrophilic property, interfacial adsorption trend is strong, and the surfactivity that interface saturated extent of adsorption is large carries out ternary built.Three kinds of tensio-active agents form mixed micellazation solution under finite concentration and specific proportioning, its water-oil interface adsorption tendency is strengthened, oil water interfacial tension is declined, and there is general oil phase adaptability, and the composite electrocharge effect can eliminated between tensio-active agent of negative and positive, and the loss of the tensio-active agent making the anion surfactant amount of skipping over can reduce stratum absorption and cause.
Accompanying drawing explanation
Fig. 1 is oil/water interfacial tension change curve in time.Use the embodiment of the present invention 1 oil-displacing agent respectively, adopt TEXAS-500 to rotate and drip interfacial tensimeter, measure oil/water interfacial tension over time, obtain INTERFACIAL TENSION CURVES.Oil phase adopts Shengli Oil Field to win mouthful crude oil that sticks together.
Fig. 2 changes three kinds of surfactant compound ratios in the embodiment of the present invention 1, adopts TEXAS-500 to rotate and drips interfacial tensimeter, measure oil/water interfacial tension over time, obtain INTERFACIAL TENSION CURVES.Oil phase adopts Shengli Oil Field lonely East crude oil.
Fig. 3 be oil-displacing agent of the present invention adopt respectively Shengli Oil Field win stick together crude oil, Gudao crude, Gudong crude oil time, use TEXAS-500 rotate drip an interfacial tensimeter, measure different crude oils/water interfacial tension over time, obtain INTERFACIAL TENSION CURVES.
Fig. 4 is that oil-displacing agent of the present invention adopts the western crude oil of Shengli Oil Field stake, uses TEXAS-500 to rotate and drips interfacial tensimeter, measure the western crude oil/water interface of stake over time, obtain INTERFACIAL TENSION CURVES.
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:
Composite oil-displacing agent composition: A, aliphatic amine polyoxyethylene ether, B, sulfonated petro-leum, C, cetyl trimethylammonium bromide.
In 20000ppm local water, add A, B according to 1:1, be uniformly mixed, then slowly drip C, make proportions specifically for 4:4:2, and three's total concn is 0.3%.TEXAS-500 is rotated an interfacial tensimeter and is adjusted to 40 DEG C, the sample hose filling previous solu is put into, after stablizing half an hour, about 1 microlitre oil from Shengli oil field is added with microsyringe, under rotating speed is 6000 revs/min, between read interfacial tension at regular intervals, INTERFACIAL TENSION CURVES is as shown in Figure 1.
Comparative example 1:
In 20000ppm local water, add A, B according to 3:1, be uniformly mixed, then slowly drip C, make proportions be 6:2:2, and three's total concn is 0.3%.According to step similarly to Example 1, measure INTERFACIAL TENSION CURVES, the results are shown in Figure 2.
Comparison diagram 1, Fig. 2 INTERFACIAL TENSION CURVES can be found out, the proportioning of three kinds of tensio-active agents is changed in comparative example, under identical measuring condition, its minimum interfacial tension value comparatively under specified proportion ternary built system high, be about 5E-3mN/m, and crude oil/water interface is down to the 3E-4 order of magnitude by the oil-displacing agent that the present invention relates in 20min, Be very effective compared with comparative example 1.
Comparative example 2:
Prepare the composite oil-displacing agent of specified proportion according to method in the same manner as in Example 1, under different oil phase condition, and according to step similarly to Example 1, measure INTERFACIAL TENSION CURVES, the results are shown in Figure 3.As seen from Figure 3, the crude oil/water interface of above-mentioned Different sources can be down to 10 by this oil-displacing agent faster
-3mN/m, the oil water interfacial tension of crude oil and the Gudao crude of even victory can being sticked together is down to 1.47E-4mN/m and 8.5E-5mN/m, embodies higher water-oil interface performance and general oil reservoir conformability.
Comparative example 3:
According to the surfactant soln that method in the same manner as in Example 1 is 0.3wt% with the western water filling of Shengli Oil Field stake for base fluid compound concentration, its salinity is 7075ppm.And according to step similarly to Example 1, measure the dynamical interfacial tension curve of the western crude oil of stake, the results are shown in Figure 4.As can be seen from Figure 4, western for stake crude oil/water interface can be down to 7.3 × 10 by this oil-displacing agent in 30 minutes
-5mN/m, illustrate that the change of salinity is little to this oil-displacing agent interfacial tension performance impact, this oil-displacing agent can use in wider salinity range.
Claims (4)
1. there is a surfactant compound oil-displacing agent for oil reservoir conformability, it is characterized in that, be made up of nonionogenic tenside A, anion surfactant B and cats product C, wherein,
Surfactant A is selected from fatty alcohol-polyoxyethylene ether, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, alkylol amide Soxylat A 25-7, alkylol amide (1:1 type);
Surfactant B is selected from sulfonated α-olefin, alkyl-sulphate, sulfonated petro-leum, fatty-acid ethyl ester sulfonate, alkyl carboxylate, sultaine or carboxybetaine;
Tensio-active agent C is selected from Trimethyllaurylammonium bromide, Tetradecyl Trimethyl Ammonium Bromide, cetyl trimethylammonium bromide, Cetyltrimethylammonium bromide.
2. composite oil-displacing agent according to claim 1, the mass ratio of above-mentioned A, B, C is (1 ~ 8): (1 ~ 5): (1 ~ 4).
3. the preparation of composite oil-displacing agent according to claim 1, step is as follows:
A, B are pressed 1:1 mixing, when constant temperature 25-40 DEG C, add a certain amount of mineralized water, Keep agitation, until system becomes the single liquid phase of clear, continuing slowly to add cats product C by a certain percentage when stirring, continuing to be stirred to solution clear to single liquid phase, make three's mass ratio be 4:4:2, and make the total mass concentration of A, B and C be 0.05 ~ 0.6wt%.
4. the application of composite oil-displacing agent as claimed in claim 1, wherein, the salinity range that described oil-displacing agent can tolerate is: total mineralization 0-80,000ppm, calcium ions and magnesium ions total concn 0-1,000ppm.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962273A (en) * | 2015-06-17 | 2015-10-07 | 成都高普石油工程技术有限公司 | Preparing method of compound surfactant for tertiary oil recovery |
| CN105131927A (en) * | 2015-09-01 | 2015-12-09 | 石家庄长宏能源科技有限公司 | Surface active agent used for binary compound flooding and preparation method thereof |
| CN106318358A (en) * | 2016-07-28 | 2017-01-11 | 山东大学 | Green and environmentally friendly foam oil displacement system based on alkyl glycoside and preparation method and application thereof |
| CN106350048A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Oil washing agent for oil well fracturing as well as preparation method and application of oil washing agent |
| CN107573916A (en) * | 2017-10-17 | 2018-01-12 | 中国石油大学(华东) | A kind of low dense high efficiency composition displacement composition |
| CN110129019A (en) * | 2019-06-11 | 2019-08-16 | 西南石油大学 | A kind of nanometer displacement agent and preparation method thereof for tertiary oil recovery |
| CN110157403A (en) * | 2019-05-08 | 2019-08-23 | 中国石油大学(北京) | A kind of low-permeability oil deposit oil displacement agent |
| CN110527503A (en) * | 2018-05-24 | 2019-12-03 | 中国石油化工股份有限公司 | Middle and low permeable reservoir displacement of reservoir oil zwitterion is to nanoemulsions oil displacement agent |
| CN110776893A (en) * | 2018-07-31 | 2020-02-11 | 中国石油化工股份有限公司 | Low-interfacial-tension strong-foam oil displacement agent |
| CN110964494A (en) * | 2018-09-30 | 2020-04-07 | 中国石油化工股份有限公司 | Composite alkali-free oil displacement agent containing polymer and nano emulsion and oil displacement method |
| CN114426838A (en) * | 2021-12-16 | 2022-05-03 | 中国石油化工股份有限公司 | Composite synergistic cleanup additive and preparation method thereof |
| CN115386358A (en) * | 2022-06-30 | 2022-11-25 | 常州大学 | Natural surfactant compound system and preparation method thereof |
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2013
- 2013-12-09 CN CN201310659350.4A patent/CN104694103A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104962273A (en) * | 2015-06-17 | 2015-10-07 | 成都高普石油工程技术有限公司 | Preparing method of compound surfactant for tertiary oil recovery |
| CN105131927B (en) * | 2015-09-01 | 2020-04-17 | 石家庄长宏能源科技有限公司 | Surfactant for binary combination flooding and preparation method thereof |
| CN105131927A (en) * | 2015-09-01 | 2015-12-09 | 石家庄长宏能源科技有限公司 | Surface active agent used for binary compound flooding and preparation method thereof |
| CN106350048A (en) * | 2016-07-22 | 2017-01-25 | 北京斯迪莱铂油气技术有限公司 | Oil washing agent for oil well fracturing as well as preparation method and application of oil washing agent |
| CN106350048B (en) * | 2016-07-22 | 2019-06-14 | 北京斯迪莱铂油气技术有限公司 | A kind of wellfracturing detergent and its preparation method and application |
| CN106318358A (en) * | 2016-07-28 | 2017-01-11 | 山东大学 | Green and environmentally friendly foam oil displacement system based on alkyl glycoside and preparation method and application thereof |
| CN106318358B (en) * | 2016-07-28 | 2019-05-21 | 山东大学 | A kind of environmental type foam flooding system and the preparation method and application thereof based on alkyl glycosides |
| CN107573916A (en) * | 2017-10-17 | 2018-01-12 | 中国石油大学(华东) | A kind of low dense high efficiency composition displacement composition |
| CN107573916B (en) * | 2017-10-17 | 2020-04-28 | 中国石油大学(华东) | Low-concentration efficient composite oil displacement composition |
| CN110527503B (en) * | 2018-05-24 | 2021-08-20 | 中国石油化工股份有限公司 | Anion-cation pair nanoemulsion oil displacement agent for oil displacement of medium-low permeability reservoir |
| CN110527503A (en) * | 2018-05-24 | 2019-12-03 | 中国石油化工股份有限公司 | Middle and low permeable reservoir displacement of reservoir oil zwitterion is to nanoemulsions oil displacement agent |
| CN110776893A (en) * | 2018-07-31 | 2020-02-11 | 中国石油化工股份有限公司 | Low-interfacial-tension strong-foam oil displacement agent |
| CN110776893B (en) * | 2018-07-31 | 2022-02-22 | 中国石油化工股份有限公司 | Low-interfacial-tension strong-foam oil displacement agent |
| CN110964494A (en) * | 2018-09-30 | 2020-04-07 | 中国石油化工股份有限公司 | Composite alkali-free oil displacement agent containing polymer and nano emulsion and oil displacement method |
| CN110964494B (en) * | 2018-09-30 | 2021-12-10 | 中国石油化工股份有限公司 | Composite alkali-free oil displacement agent containing polymer and nano emulsion and oil displacement method |
| CN110157403A (en) * | 2019-05-08 | 2019-08-23 | 中国石油大学(北京) | A kind of low-permeability oil deposit oil displacement agent |
| CN110129019B (en) * | 2019-06-11 | 2021-01-26 | 西南石油大学 | Nano oil displacement agent for tertiary oil recovery and preparation method thereof |
| CN110129019A (en) * | 2019-06-11 | 2019-08-16 | 西南石油大学 | A kind of nanometer displacement agent and preparation method thereof for tertiary oil recovery |
| CN114426838A (en) * | 2021-12-16 | 2022-05-03 | 中国石油化工股份有限公司 | Composite synergistic cleanup additive and preparation method thereof |
| CN115386358A (en) * | 2022-06-30 | 2022-11-25 | 常州大学 | Natural surfactant compound system and preparation method thereof |
| CN115386358B (en) * | 2022-06-30 | 2023-08-08 | 常州大学 | Natural surfactant compound system and preparation method thereof |
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Application publication date: 20150610 |