CN105586023A - Inorganic gel foam water shutoff profile control agent for low-permeability oil reservoir - Google Patents
Inorganic gel foam water shutoff profile control agent for low-permeability oil reservoir Download PDFInfo
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- CN105586023A CN105586023A CN201410573683.XA CN201410573683A CN105586023A CN 105586023 A CN105586023 A CN 105586023A CN 201410573683 A CN201410573683 A CN 201410573683A CN 105586023 A CN105586023 A CN 105586023A
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Abstract
The invention provides an inorganic gel foam water shutoff profile control agent for a low-permeability oil reservoir, and belongs to the field of a profile control agent for the low-permeability oil reservoir. The technical scheme of the invention is that: the inorganic gel foam water shutoff profile control agent consists of a main body material, an additive material and water, wherein the main body material consists of 10% of modified aluminum chloride and 2-5% of urea, the additive material consists of 0.4% of an auxiliary agent and 0.4% of a surfactant, the main body material and the additive material are base materials, and the weight ratio of the base materials to the water is 1:(5-7). The water shutoff profile control agent before gelling has good injectivity, has relatively high strength after being gelled in a stratum, can effectively plug a high-permeability layer, and can effectively solve the problem of serious water channeling of a high-temperature low-permeability oil reservoir.
Description
Technical field
The present invention relates to LOW PERMEABILITY RESERVOIR water plugging profile control agent, relate in particular to a kind of LOW PERMEABILITY RESERVOIR inorganic gel foam water plugging profile controlAgent.
Background technology
At present, the conventional profile-controlling and plugging agent of low permeability oil field mainly contains: (one) gel-type profile-controlling and plugging agent. (2) precipitationType inorganic salts profile-controlling and plugging agent, feature is that intensity is high, cost is low, good stability, but must take effectively in the time of constructionSafeguard measure, otherwise can stop up oil reservoir, pollution stratum. (3) gel-type profile-controlling and plugging agent, silicic acid gel should oil fieldWith comparatively extensive. (4) foam class profile-controlling and plugging agent, has that cost is low, a high temperature resistance, the stifled wet goods good characteristic of water blockoff,It is the rising selective blocking agent of one. (5) for the high-temperature profile control water shutoff agent of low permeability oil field, alkali lignin, steamingSteam foam, lignosulfonates, resinae, modification rubber sigh tannin extract, gel-cement etc. Existing profile-controlling and plugging agent is for temperatureDegree is lower than the plugged zone of 100 DEG C, and effect is better, but is not suitable for temperature higher than the high temperature and high salt oil deposit of 100 DEG C. Relevant lowInfiltration oil reservoir water blockoff or envelope are altered the report by High Temperature Plugging Agent, all rare at home and abroad at present.
Summary of the invention
The object of the invention is to, overcome the deficiencies in the prior art, for LOW PERMEABILITY RESERVOIR water breakthrough well group high temperature, high pressure, heightThe problems such as ore deposit, common profile control agent heat-resistant salt-resistant weak effect, provide a kind of inorganic gel foam that is applicable to hypotonic water breakthrough well groupWater plugging profile control agent and preparation method thereof. The front viscosity of this inorganic gel foam water plugging profile control agent gelling is low, easily injection, after gellingHave higher intensity, temperature-resistant anti-salt is good, effectively shutoff high permeability formation, and high salt low-permeability oil deposit can reach a high temperatureThe object of the effective water blockoff of water breakthrough well group.
For reaching one of above-mentioned purpose, technical scheme of the present invention is:
LOW PERMEABILITY RESERVOIR inorganic gel foam water plugging profile control agent, is made up of described main body material material of main part, interpolation material and waterMaterial is made up of 10% modified chlorinated aluminium and the urea of 2-5%, and described interpolation material is by being 0.4% auxiliary agent and 0.4% surfaceActivating agent composition, described material of main part and interpolation material are basic material, the weight ratio of described basic material and water is 1:5-7.
One of object of the present invention also can realize by following technical measures:
Described auxiliary agent is sodium sulphate.
Described surfactant is SS-161.
In order to reach two of above-mentioned purpose, technical scheme of the present invention is:
The preparation method of LOW PERMEABILITY RESERVOIR inorganic gel foam water plugging profile control agent, addition in accordance with regulations, first by polymerization chlorinationAluminium, urea and sodium sulphate are added to the water and mix successively, then add surfactant to form inorganic gel foam water pluggingProfile control agent.
The present invention, improving aspect the heat-resistant salt-resistant of host, has selected inorganic matter aluminium polychloride and urea, and urea is at heightTemperature produces gas and forms alkaline environment, AL lower decomposition3+When hydrolysis forms a large amount of aluminium hydroxide, just can be formed with enoughThe alumina gel of intensity, heatproof can reach 130 DEG C, and salt tolerant can reach 80000mg/l salinity.
The present invention, by the selection of auxiliary agent and surfactant, improves intensity and the heat endurance of blocking agent, and intensity is by 0.1MPaBe increased to 0.3MPa, heat endurance can arrive 90d under 130 DEG C of conditions and not dewater. To fill a prescription further perfect, finally examinationTest rear indices and all reach requirement.
The invention has the beneficial effects as follows, inorganic gel foam water plugging profile control agent is taking gel as continuous phase, and gas is decentralized photo,Formation of foam and gel-forming exist and occur simultaneously, and the final product forming is gel foam but not single gel. Before gelling, be liquidBody, has good injection, after gelling, is inorganic gel, has higher intensity, and heat-resistant salt-resistant is good, canEffectively shutoff high permeability formation, can effectively solve the serious problem of high temperature LOW PERMEABILITY RESERVOIR water breakthrough.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail. It should be noted that the present embodiment is only for rightThe present invention is further described, and can not be interpreted as limiting the scope of the invention, the person skilled in the art in this fieldCan make some nonessential improvement and adjustment according to the content of the invention described above.
Embodiment 1
Modified chlorinated aluminium 10%, urea 2% and sodium sulphate 0.4% are joined successively in the water of 5 times of above-mentioned raw materials weight and mixEvenly, then add 0.4% SS-161 to mix, obtain inorganic gel foam water plugging profile control agent. Above consumption is qualityPercentage.
Embodiment 2
By modified chlorinated aluminium 10%, urea 5% and sodium sulphate 0.4% join successively in the water of 7 times of above-mentioned raw materials weight and mixEvenly, then add 0.4% SS-161 to mix, obtain inorganic gel foam water plugging profile control agent. Above consumption is qualityPercentage.
Embodiment 3
By modified chlorinated aluminium 10%, urea 3% and sodium sulphate 0.4% join successively in the water of 6 times of above-mentioned raw materials weight and mix allEven, then add 0.4% SS-161 to mix, obtain inorganic gel foam water plugging profile control agent. Above consumption is mass percent.
Claims (4)
1. LOW PERMEABILITY RESERVOIR inorganic gel foam water plugging profile control agent, formed by material of main part, interpolation material and water, it is characterized in that, described material of main part is made up of 10% modified chlorinated aluminium and the urea of 2-5%, described interpolation material is made up of 0.4% auxiliary agent and 0.4% surfactant, and described material of main part and the weight ratio of adding material and water are 1:5-7.
2. LOW PERMEABILITY RESERVOIR inorganic gel foam water plugging profile control agent according to claim 1, is characterized in that, described auxiliary agent is sodium sulphate.
3. LOW PERMEABILITY RESERVOIR inorganic gel foam water plugging profile control agent according to claim 1, is characterized in that, described surfactant is SS-161.
4. according to the preparation method of LOW PERMEABILITY RESERVOIR inorganic gel foam water plugging profile control agent described in claim 1,2 or 3, it is characterized in that, first described modified chlorinated aluminium, urea and sodium sulphate are added to the water and are mixed successively, then add described surfactant to form inorganic gel foam water plugging profile control agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410573683.XA CN105586023A (en) | 2014-10-23 | 2014-10-23 | Inorganic gel foam water shutoff profile control agent for low-permeability oil reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410573683.XA CN105586023A (en) | 2014-10-23 | 2014-10-23 | Inorganic gel foam water shutoff profile control agent for low-permeability oil reservoir |
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|---|---|
| CN105586023A true CN105586023A (en) | 2016-05-18 |
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| CN201410573683.XA Pending CN105586023A (en) | 2014-10-23 | 2014-10-23 | Inorganic gel foam water shutoff profile control agent for low-permeability oil reservoir |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345133A (en) * | 2017-06-14 | 2017-11-14 | 胜利油田康贝石油工程装备有限公司 | A kind of compound stifled tune liquid of three-phase froth and preparation method and application |
| CN116606117A (en) * | 2023-05-04 | 2023-08-18 | 长江大学 | A kind of degradable fly ash oil-water interface separator and its preparation method and application |
| RU2820437C1 (en) * | 2022-12-19 | 2024-06-03 | Акционерное общество "Зарубежнефть" | Composition for isolation of water influx to producing oil wells |
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| US4889563A (en) * | 1985-07-02 | 1989-12-26 | Dowell Schlumberger Incorporated | Process for retarding and controlling the formation of gels or precipitates derived from aluminium and corresponding compositions, plus the corresponding applications-in particular regarding oil wells |
| RU2352766C1 (en) * | 2007-07-17 | 2009-04-20 | Институт химии нефти Сибирского отделения Российской академии наук | Method of water production shut-off in oil and gas producing wells and equalisation of injectivity profile in pressure vertical and horizontal wells at presence of super fractures and high penetrable beds and composition for implementation of this method |
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| US4889563A (en) * | 1985-07-02 | 1989-12-26 | Dowell Schlumberger Incorporated | Process for retarding and controlling the formation of gels or precipitates derived from aluminium and corresponding compositions, plus the corresponding applications-in particular regarding oil wells |
| RU2352766C1 (en) * | 2007-07-17 | 2009-04-20 | Институт химии нефти Сибирского отделения Российской академии наук | Method of water production shut-off in oil and gas producing wells and equalisation of injectivity profile in pressure vertical and horizontal wells at presence of super fractures and high penetrable beds and composition for implementation of this method |
| RU2406746C1 (en) * | 2009-07-13 | 2010-12-20 | Закрытое акционерное общество (ЗАО) "Научно-производственное предприятие "НефтеСервисКомплект" | Thermotropic gel-forming composition |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107345133A (en) * | 2017-06-14 | 2017-11-14 | 胜利油田康贝石油工程装备有限公司 | A kind of compound stifled tune liquid of three-phase froth and preparation method and application |
| RU2820437C1 (en) * | 2022-12-19 | 2024-06-03 | Акционерное общество "Зарубежнефть" | Composition for isolation of water influx to producing oil wells |
| CN116606117A (en) * | 2023-05-04 | 2023-08-18 | 长江大学 | A kind of degradable fly ash oil-water interface separator and its preparation method and application |
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