CN104109520B - 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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- CN104109520B CN104109520B CN201310140876.1A CN201310140876A CN104109520B CN 104109520 B CN104109520 B CN 104109520B CN 201310140876 A CN201310140876 A CN 201310140876A CN 104109520 B CN104109520 B CN 104109520B
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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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- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
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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 oil field foaming agent field, furtherly, it is related to a kind of foaming being applied to high temperature and high salt oil deposit
Agent and preparation method.
Background technology
Sinopec chemical flooding Potential Resources in 2008 evaluate type high temp high salinity reservoir (prime stratum temperature≤95 DEG C,
Formation water salinity≤100000mg/l) 464,790,000 tons of oil in place, account for the 32.9% of total oil in place, in the crude oil of sinopec
It is respectively provided with very important status in yield and reserves, but current recovery percent of reserves is low, only 30% about.Resistance to due to polymer
Not, polymer flooding, binary drive the purpose being all difficult to that type high temp high salinity reservoir improves recovery ratio to warm salt-resistance, are suitable to
Class reservoir chemical flooding polymer progress is not very big.Some surface activitys in chemical flooding have than more prominent high temperature resistant,
Salt-tolerant trait, is a promising method by realize foam flooding technology improving type high temp high salinity reservoir recovery ratio.
Foam flooding improve oil recovery factor in terms of study more be steam bubble displacement of reservoir oil spe/doe14905 and
co2Foam flooding spe29168, foam therein is primarily used to reduce injection gas flow rate.Displacement as conventional oil reservoir
Means, the domestic filed application of foam flooding was mainly carried out in Baise Oilfield, Shengli Oil Field, Daqing oil field and Zhongyuan Oil Field.Although
The foam wherein having uses temperature to be relatively up to 80 DEG C, but the foamability evaluation of its foam is all less than 70 DEG C.
There are the dodecylbenzene sodium sulfonate of anionic, Laurel through foaming agent main component used in the conventional oil reservoir of investigation
Alcohol poly(ethylene oxide) ether sodium sulfate, lignosulfonates, the alkylphenol polyoxyethylene of nonionic and the glycine betaine of both sexes etc..
Different types of foaming agent needs different types of foam stabilizer, and conventional foam stabilizer has cmc, polyacrylamide, lauryl alcohol, three ethanol
Amine, clay, soluble starch, lauroyl diethanolamine etc..
It is directed to the increasingly harsher present situation of domestic chemistry oil reservoirs condition in recent years, also have some to be engaged in high temperature and high salt and bubble
The in-house laboratory investigation of agent, but 80 DEG C are only reached to the foamability evaluation study maximum temperature of foaming agent, such as foaming agent (hxy-
1+hxyp).
Content of the invention
Merit rating for solving the problems, such as foaming agent in prior art is low, the invention provides one kind is applied to high temperature height
The foaming agent of salt oil deposit and preparation method.The foaming agent foaming capacity of the present invention is strong, resistance to high salinity, the magnesium ion of resistance to high calcium with ground
Layer compatibility is good, and foamability evaluation temperature reaches 95 DEG C.An object of the present invention is to provide one kind to be applied to high temperature and high salt
The foaming agent of oil reservoir.
Including:
Alkylsulfonate 50～70wt%, alkyl amine oxide 10～15wt%, remaining is distilled water.
The ph value of described foaming agent is preferably 7-9；Ph value can be adjusted 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 purpose reservoir formation water constituent, sodium chloride, citric acid or hydrochloric acid in foaming agent, can also be properly added.Add
Purpose be because that stratum water has salinity in itself, the Best of foaming agent is also to have certain salinity scope
, if the salinity condition of stratum water or ph value condition are not, these salt or acid can be added to adjust.
The present invention be provide a kind of be suitable for three type high temp high salinity reservoirs improve recovery ratios foaming agent it is adaptable to temperature not
Higher than 95 DEG C, salinity 100000～150000mg/l, calcium ions and magnesium ions concentration is less than the oil reservoir of 10000mg/l, and the present invention rises
Infusion can form stable nitrogen or air foam.
Described foaming agent includes main foam anionic alkylsulfonate and foam stabilizer alkyl amine oxide.Its composition presses matter
Amount ratio alkylsulfonate 50～70%, alkyl dimethyl amine oxide 10～15%, remaining is distilled water.
Alkylsulfonate molecular formula: rso3Na, wherein alkyl r are preferably 12～18 carbon.
Alkyl amine oxide structural formula:
Alkyl r is preferably 12 carbon～16 carbon.
The second object of the present invention is to provide a kind of preparation method of the foaming agent being applied to high temperature and high salt oil deposit.
Including:
Sequentially add alkylsulfonate, alkyl amine oxide, distilled water while stirring in a kettle., be obtained after mix homogeneously
Described foaming agent；
The temperature of reactor is 30～70 DEG C.
Specifically,
First main foam is added in reactor, 30～70 DEG C of constant temperature scope, add foam stabilizer and distilled water while stirring,
Stop heated and stirred after fully mixing.According to specific stratum water, suitable control foaming agent ph value is 7～9.
The foaming agent of the present invention has that foaming capacity is strong, resistance to high salinity, the magnesium ion of resistance to high calcium are good with stratum compatibility
Characteristic.
The present invention passes through Roche foam meter foamability and evaluates, foaming agent concentration 0.5%, 95 DEG C of temperature, salinity
Under the conditions of 100000-150000mg/l, foamability 900～1000ml, 8～12 minutes half-life.
Specific embodiment
With reference to embodiment, further illustrate the present invention.
Raw materials used in embodiment:
The alkylsulfonate industrial goods place of production: the space science and technology limited public affairs of share are praised in Xi'an south wind daily use chemicals Co., Ltd/Zhejiang
Department
The alkyl amine oxide industrial goods place of production: the great unit in Tianjin
The dodecylbenzene sodium 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 poly(ethylene oxide) ether sodium sulfate industrial goods place of production: Tianjin is lucky to contain unit
Sodium chloride analyzes the pure place of production: Beijing Chemical Plant
Concentrated hydrochloric acid analyzes the pure place of production: Beijing Chemical Plant
The pure place of production of Fructus Citri Limoniae acid analysis: Chemical Reagent Co., Ltd., Sinopharm Group
Foaming agent dp-4 (be using a kind of foaming agent arriving in conventional oil reservoir: using temperature ＜ 80 DEG C)
The industrial goods place of production: Shengli Oil Field
Embodiment 1
300g alkylsulfonate (carbon number 12～14) is added in reactor, starts agitator 30 DEG C of constant temperature, side
Stirring side adds 100g distilled water, adds 50g foam stabilizer alkyl amine oxide (carbon number 12～16), adjusts ph value with hydrochloric acid
To 7, stop heated and stirred after being fully mixed evenly.After placing sedimentation, obtain foaming agent product.
Embodiment 2
150kg alkylsulfonate (carbon number 15～16) is added in reactor, starts agitator 60 DEG C of constant temperature, side
Stirring side adds 30kg foam stabilizer alkyl amine oxide (carbon number 12～16), adds 100kg distilled water, treats fully to mix all
Stop heated and stirred after even.After placing sedimentation, obtain foaming agent product.
Embodiment 3
250g alkylsulfonate (carbon number 12～16) is added in reactor, starts agitator 70 DEG C of constant temperature, side
Stirring side adds 100g distilled water, adds 50g sodium chloride, 70g foam stabilizer alkyl amine oxide (carbon number 12～16), uses salt
Acid adjusts ph value 8.Stop heated and stirred after being fully mixed evenly.After placing sedimentation, obtain foaming agent product.
Test:
The performance evaluation of foaming agent
Accurately weighing foaming agent 4.00g(embodiment 1 to prepare in 1000ml wide mouthed bottle) graduated cylinder measures 800ml salinity
100000-150000mg/l saline (nacl preparation).With Glass rod, saline is proceeded in the wide mouthed bottle weighing foaming agent, at 80 DEG C
In water bath with thermostatic control, constant temperature stirs and fully dissolves to foaming agent.Prepare 0.5% foaming agent solution is transferred to 95 DEG C of Roche bubbles respectively
In foam instrument, after making the 500ml foaming agent solution 50ml solution surface with concentration mutually synthermal from 450mm Height Impact, write down
Foam height h when just having flowed 500ml solution0With foam height h after stable for point liquidt, steady as foaming agent foamability and foam
Qualitatively evaluate.Record foamability (ht-h0Foam height), half foam life period, at least do two Duplicate Samples and average and do
Bubble merit rating.First time experimental result, foamability 960ml at 95 DEG C, half foam life period 11min；Second experimental result
Foamability 930ml at 95 DEG C, half foam life period 9min；Foamability 945ml at final 95 DEG C of experimental result, half foam life period
10min.
Main foam in several filed application and foaming agent of the present invention are in 95 DEG C, salinity 10 × 104Mg/l(sodium chloride
Prepare) under same concentration evaluation test the results are shown in Table 1:
Table 1
Can be seen that under the conditions of identical temperature and salinity from the data of table 1, the foaming of embodiment 1 and stability
All relatively good, better than foaming agent commonly used in the prior art.
Claims (3)
1. a kind of foaming agent being applied to high temperature and high salt oil deposit is it is characterised in that described foaming agent includes:
Alkylsulfonate 50～70wt%, alkyl amine oxide 10～15wt%, remaining is distilled water；
The molecular formula of described alkylsulfonate is rso3Na, wherein, the carbon number of alkyl r is 12～18；Described alkyl amine oxide
Structural formula beWherein, the carbon number of alkyl r is 12～16.
2. be applied to the foaming agent of high temperature and high salt oil deposit as claimed in claim 1 it is characterised in that:
The ph value of described foaming agent is 7-9.
3. a kind of preparation method of the foaming agent being applied to high temperature and high salt oil deposit as claimed in claim 1 or 2 it is characterised in that
Methods described includes:
Sequentially add alkylsulfonate, alkyl amine oxide, distilled water while stirring in a kettle., be obtained described after mix homogeneously
Foaming agent；
The temperature of reactor is 30～70 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
Applications Claiming Priority (1)
| 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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| CN104109520A CN104109520A (en) | 2014-10-22 |
| CN104109520B true CN104109520B (en) | 2017-01-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395932B (en) * | 2016-11-09 | 2019-06-14 | 烟台史密得机电设备制造有限公司 | A kind of ternary composite flooding water extraction degreaser of heat-resistant salt-resistant and preparation method thereof |
| 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 |
| 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 |
| 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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| CN102676145A (en) * | 2012-05-16 | 2012-09-19 | 中国石油天然气股份有限公司 | High-temperature foaming agent and preparation method thereof |
| CN102676142A (en) * | 2012-05-28 | 2012-09-19 | 中国石油天然气股份有限公司 | Condensate oil foam discharging agent applied to natural gas extraction |
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