CN104109520A - Foaming agent suitable for high-temperature and high-salinity oil reservoir and preparation method thereof - Google Patents
Foaming agent suitable for high-temperature and high-salinity oil reservoir and preparation method thereof Download PDFInfo
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- CN104109520A CN104109520A CN201310140876.1A CN201310140876A CN104109520A CN 104109520 A CN104109520 A CN 104109520A CN 201310140876 A CN201310140876 A CN 201310140876A CN 104109520 A CN104109520 A CN 104109520A
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- 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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Abstract
The invention discloses a foaming agent suitable for a high-temperature and high-salinity oil reservoir and a preparation method thereof. The foaming agent includes 50-70 wt% of alkyl sulfonate, 10-15 wt% of alkyl amine oxide, and the balance distilled water; the pH value of the foaming agent is 7-9. The method includes the steps: successively adding alkyl sulfonate, alkyl amine oxide and distilled water into a reaction kettle while stirring, and mixing uniformly to obtain the foaming agent, wherein the temperature of the reaction kettle is 30-70 DEG C. The foaming agent has the advantages of strong foaming ability, high salinity resistance, high calcium and magnesium ion resistance and good compatibility with formation water.
Description
Technical field
The present invention relates to pore forming material field, oil field, furtherly, relate to a kind of pore forming material and preparation method who is applicable to high temperature and high salt oil deposit.
Background technology
Sinopec chemical flooding Potential Resources in 2008 is evaluated 464,790,000 tons of III type high temp high salinity reservoir (prime stratum temperature≤95 ℃, formation water salinity≤100000mg/L) geologic reserve, account for 32.9% of total geologic reserve, in the crude production rate of China Petrochemical Industry and reserves, all there is very important status, but recovery percent of reserves is low at present, only has 30% left and right.Because the temperature resistant antisalt of polymkeric substance is inadequate, polymer flooding, binary are driven and are all difficult to realize the object that III type high temp high salinity reservoir improves recovery ratio, and being suitable for III class reservoir chemical flooding neither be very large by polymkeric substance progress.Some surfactivitys in chemical flooding have relatively outstanding high temperature resistant, salt-tolerant trait, and by realizing foam flooding technology, to improve III type high temp high salinity reservoir recovery ratio be a promising method.
Foam flooding is steam bubble displacement of reservoir oil SPE/DOE14905 and CO what study morely aspect raising oil recovery factor
2foam flooding SPE29168, foaming agent wherein is mainly used for reducing injecting gas flow velocity.As the displacement means of conventional oil reservoir, the domestic mining site application of foam flooding was mainly carried out in Baise Oilfield, Shengli Oil Field, Daqing oil field and Zhongyuan Oil Field.Although the foaming agent use temperature wherein having is up to 80 ℃, the latherability evaluation of its foaming agent is all lower than 70 ℃.
The pore forming material main component of using in investigating conventional oil reservoir has Sodium dodecylbenzene sulfonate, lauryl alcohol polyethylene oxide ether sodium sulfate, the sulfonated lignin of anionic, the alkylphenol polyoxyethylene of non-ionic type and the trimethyl-glycine of both sexes etc.Dissimilar pore forming material needs different types of suds-stabilizing agent, and conventional suds-stabilizing agent has CMC, polyacrylamide, lauryl alcohol, trolamine, clay, Zulkovsky starch, lauroyl diethanolamine etc.
In recent years for the more and more harsher present situation of domestic chemical oil reservoirs condition, also there are some to be engaged in the in-house laboratory investigation of high temperature and high salt pore forming material, but the latherability evaluation study top temperature to pore forming material only reaches 80 ℃, as pore forming material (HXY-1+HXYP).
Summary of the invention
For solving the low problem of merit rating of pore forming material in prior art, the invention provides a kind of pore forming material and preparation method who is applicable to high temperature and high salt oil deposit.Strong, the resistance to high salinity of pore forming material foaming power of the present invention, the ion of resistance to high contents of calcium and magnesium and stratum compatibleness are good, and latherability evaluation temperature reaches 95 ℃.One of object of the present invention is to provide a kind of pore forming material that is applicable to high temperature and high salt oil deposit.
Comprise:
Alkylsulfonate 50～70wt%, alkyl amine oxide 10～15wt%, all the other are distilled water.
The pH value of described pore forming material is preferably 7-9; Can regulate pH value by acid;
Its alkyl carbon number of described alkylsulfonate is preferably 12～18;
Its alkyl carbon number of described alkyl amine oxide is preferably 12～16.
According to object reservoir formation water constituent, in pore forming material, can also suitably add sodium-chlor, citric acid or hydrochloric acid.The object adding is to have salinity because of local water itself, and the Best of pore forming material is also to have certain salinity scope, if the salinity conditioned disjunction pH value condition of local water is inadequate, can adds these salt or acid and regulate.
The present invention is to provide a kind of three type high temp high salinity reservoirs that are applicable to and improves the pore forming material that recovery ratio is used, be applicable to temperature not higher than 95 ℃, salinity 100000～150000mg/L, calcium ions and magnesium ions concentration is lower than the oil reservoir of 10000mg/l, and pore forming material of the present invention can form stable nitrogen or air foam.
Described pore forming material comprises main foaming agent anionic alkylsulfonate and suds-stabilizing agent alkyl amine oxide.It forms alkylsulfonate 50～70% in mass ratio, alkyl dimethyl amine oxide 10～15%, and all the other are distilled water.
Alkylsulfonate molecular formula: RSO
3na, wherein alkyl R is preferred 12～18 carbon.
Alkyl amine oxide structural formula:
Alkyl R is preferably 12 carbon～16 carbon.
Two of object of the present invention is to provide a kind of preparation method who is applicable to the pore forming material of high temperature and high salt oil deposit.
Comprise:
In reactor, add successively while stirring alkylsulfonate, alkyl amine oxide, distilled water, after mixing, make described pore forming material;
The temperature of reactor is 30～70 ℃.
Particularly,
First main foaming agent is added in reactor, 30～70 ℃ of constant temperature scopes, add suds-stabilizing agent and distilled water while stirring, after fully mixing, stop heated and stirred.According to concrete local water, suitably control pore forming material pH value 7～9.
Pore forming material of the present invention has the characteristic that strong, the resistance to high salinity of foaming power, the ion of resistance to high contents of calcium and magnesium and stratum compatibleness are good.
The present invention evaluates by Roche Latherometer latherability, foaming agent concentration 0.5%, and under 95 ℃ of temperature, salinity 100000-150000mg/L condition, latherability 900～1000ml, 8～12 minutes transformation period.
Embodiment
Below in conjunction with embodiment, further illustrate the present invention.
Raw materials used in embodiment:
The alkylsulfonate industrial goods place of production: Xi'an south wind daily use chemicals limited liability company/Zhejiang Province ZanYu Technology Co., Ltd
The alkyl amine oxide industrial goods place of production: the great unit in Tianjin
The Sodium dodecylbenzene sulfonate industrial goods place of production: the great unit in Tianjin
The empgen BB industrial goods place of production: the great unit in Tianjin
The lauryl alcohol polyethylene oxide ether sodium sulfate industrial goods place of production: the lucky unit of containing in Tianjin
The sodium-chlor analytical pure place of production: Beijing Chemical Plant
The concentrated hydrochloric acid analytical pure place of production: Beijing Chemical Plant
The citric acid analytical pure place of production: Chemical Reagent Co., Ltd., Sinopharm Group
Pore forming material DP-4 (being 80 ℃ of a kind of pore forming material using in conventional oil reservoir: use temperature <)
The industrial goods place of production: Shengli Oil Field
Embodiment 1
300g alkylsulfonate (carbon number 12～14) is added in reactor, start 30 ℃ of agitator constant temperature, add while stirring 100g distilled water, add again 50g suds-stabilizing agent alkyl amine oxide (carbon number 12～16), with salt acid for adjusting pH value to 7, after being fully mixed evenly, stop heated and stirred.Place after sedimentation, obtain pore forming material product.
Embodiment 2
150kg alkylsulfonate (carbon number 15～16) is added in reactor, start 60 ℃ of agitator constant temperature, add while stirring 30kg suds-stabilizing agent alkyl amine oxide (carbon number 12～16), then add 100kg distilled water, after being fully mixed evenly, stop heated and stirred.Place after sedimentation, obtain pore forming material product.
Embodiment 3
250g alkylsulfonate (carbon number 12～16) is added in reactor, start 70 ℃ of agitator constant temperature, add while stirring 100g distilled water, then add 50g sodium-chlor, 70g suds-stabilizing agent alkyl amine oxide (carbon number 12～16), uses hydrochloric acid adjust pH 8.After being fully mixed evenly, stop heated and stirred.Place after sedimentation, obtain pore forming material product.
Test:
The performance evaluation of pore forming material
In 1000ml wide-necked bottle, accurately taking pore forming material 4.00g(embodiment 1 preparation) graduated cylinder measures 800ml salinity 100000-150000mg/L salt solution (NaCl preparation).With glass stick, salt solution is proceeded in the wide-necked bottle that takes pore forming material, in 80 ℃ of waters bath with thermostatic control, constant temperature is stirred to pore forming material and fully dissolves.0.5% foaming agent solution preparing is transferred to respectively in 95 ℃ of Roche Latherometers, makes 500ml foaming agent solution after 450mm highly impacts the 50ml solution surface of uniform temp and concentration, foam height H while writing down the complete 500ml solution of firm stream
0foam height H after stable with separatory
t, as the evaluation of pore forming material latherability and froth stability.Record latherability (H
t-H
0foam height), half foam life period, at least do two Duplicate Samples and average and do foaming merit rating.Experimental result for the first time, latherability 960ml at 95 ℃, half foam life period 11min; Latherability 930ml at 95 ℃ of experimental results for the second time, half foam life period 9min; Latherability 945ml at 95 ℃ of final experimental results, half foam life period 10min.
Main foaming agent in several mining site application and pore forming material of the present invention are 95 ℃, salinity 10 * 10
4the preparation of mg/L(sodium-chlor) lower same concentration evaluation test the results are shown in Table 1:
Table 1
From the data of table 1, can find out, under identical temperature and salinity condition, the foaming of embodiment 1 and stability are all relatively good, are better than pore forming material conventional in prior art.
Claims (5)
1. be applicable to a pore forming material for high temperature and high salt oil deposit, it is characterized in that described pore forming material comprises:
Alkylsulfonate 50～70wt%, alkyl amine oxide 10～15wt%, all the other are distilled water.
2. the pore forming material that is applicable to high temperature and high salt oil deposit as claimed in claim 1, is characterized in that:
The pH value of described pore forming material is 7-9.
3. the pore forming material that is applicable to high temperature and high salt oil deposit as claimed in claim 1, is characterized in that:
Its alkyl carbon number of described alkylsulfonate is 12～18.
4. the pore forming material that is applicable to high temperature and high salt oil deposit as claimed in claim 1, is characterized in that:
Its alkyl carbon number of described alkyl amine oxide is 12～16.
5. a preparation method for the pore forming material that is applicable to high temperature and high salt oil deposit as described in one of claim 1～4, is characterized in that described method comprises:
In reactor, add successively while stirring alkylsulfonate, alkyl amine oxide, distilled water, after mixing, make described pore forming material;
The temperature of reactor is 30～70 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310140876.1A CN104109520B (en) | 2013-04-22 | 2013-04-22 | Foaming agent suitable for high-temperature and high-salinity oil reservoir and preparation method thereof |
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| CN201310140876.1A CN104109520B (en) | 2013-04-22 | 2013-04-22 | Foaming agent suitable for high-temperature and high-salinity oil reservoir and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395932A (en) * | 2016-11-09 | 2017-02-15 | 烟台史密得机电设备制造有限公司 | Temperature-resisting and salt-resisting three-compound combination flooding produced water degreaser and preparation method thereof |
| CN108822823A (en) * | 2018-06-15 | 2018-11-16 | 吉林石油集团兴业石油化学技术服务有限公司 | A kind of acid-resisting and oil-resisting oil recovery gas production foaming agent and preparation method thereof |
| CN109207134A (en) * | 2018-10-23 | 2019-01-15 | 天津大港油田滨港集团博弘石油化工有限公司 | Efficient surfactant oil displacement composition and preparation method thereof |
| CN109679637A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | The method that ultra-deep gas well uses the composition water pumping gas production of solid foam water discharge agent |
| CN112048290A (en) * | 2020-10-21 | 2020-12-08 | 陕西延长石油（集团）有限责任公司 | Acidic nano foaming agent for high-salinity formation water of low-permeability oil and gas field and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5654260A (en) * | 1994-01-10 | 1997-08-05 | Phillips Petroleum Company | Corrosion inhibitor for wellbore applications |
| CN102676145B (en) * | 2012-05-16 | 2014-06-04 | 中国石油天然气股份有限公司 | High-temperature foaming agent and preparation method thereof |
| CN102676142B (en) * | 2012-05-28 | 2013-11-06 | 中国石油天然气股份有限公司 | Condensate oil foam discharging agent suitable for natural gas exploitation |
| CN102977872B (en) * | 2012-11-29 | 2015-08-12 | 辽宁石油化工大学 | A kind of strengthening foam oil-displacing agent for enhancing crude oil recovery efficiency in tertiary recovery and preparation method thereof |
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2013
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395932A (en) * | 2016-11-09 | 2017-02-15 | 烟台史密得机电设备制造有限公司 | Temperature-resisting and salt-resisting three-compound combination flooding produced water degreaser and preparation method thereof |
| CN109679637A (en) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | The method that ultra-deep gas well uses the composition water pumping gas production of solid foam water discharge agent |
| CN109679637B (en) * | 2017-10-18 | 2021-05-28 | 中国石油化工股份有限公司 | Method for draining water and producing gas by adopting solid foam water draining agent composition for ultra-deep gas well |
| CN108822823A (en) * | 2018-06-15 | 2018-11-16 | 吉林石油集团兴业石油化学技术服务有限公司 | A kind of acid-resisting and oil-resisting oil recovery gas production foaming agent and preparation method thereof |
| CN109207134A (en) * | 2018-10-23 | 2019-01-15 | 天津大港油田滨港集团博弘石油化工有限公司 | Efficient surfactant oil displacement composition and preparation method thereof |
| CN109207134B (en) * | 2018-10-23 | 2021-02-19 | 天津大港油田滨港集团博弘石油化工有限公司 | Surfactant composition for efficient oil displacement and preparation method thereof |
| CN112048290A (en) * | 2020-10-21 | 2020-12-08 | 陕西延长石油（集团）有限责任公司 | Acidic nano foaming agent for high-salinity formation water of low-permeability oil and gas field and preparation method and application thereof |
| CN112048290B (en) * | 2020-10-21 | 2023-02-28 | 陕西延长石油（集团）有限责任公司 | Acidic nano foaming agent for high-salinity formation water of low-permeability oil and gas field and preparation method and application thereof |
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| CN104109520B (en) | 2017-01-25 |
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