CN106318356B - A kind of water blockoff lotion and preparation method thereof - Google Patents
A kind of water blockoff lotion and preparation method thereof Download PDFInfo
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- CN106318356B CN106318356B CN201510398915.7A CN201510398915A CN106318356B CN 106318356 B CN106318356 B CN 106318356B CN 201510398915 A CN201510398915 A CN 201510398915A CN 106318356 B CN106318356 B CN 106318356B
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- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
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Abstract
The invention discloses a kind of water blockoff lotions and preparation method thereof.The water blockoff lotion contains oily phase, emulsifier, dispersing agent, stabilizer and stabilizing reinforcer；Under agitation, said components dissolution is dispersed in water, is heated, be then mutually poured slowly into the oil that temperature is 60-110 DEG C in water phase, high-speed stirred to complete emulsification.After the water blockoff lotion injects stratum, not only stability is good, but also water layer can be effectively blocked, and does not have plugging action to crude oil, can reduce the moisture content of fluid produced by oil production well, improves crude output.
Description
Technical field
The present invention relates to field of oil development, further say, are related in a kind of oilfield development process for oilwell water shutoff
Lotion and preparation method thereof.
Background technique
The oil field overwhelming majority uses waterflooding extraction both at home and abroad at present, and injecting water in the middle and later periods of exploitation can be along crack, height
It permeates band etc. and enters producing well, so that production fluid is aqueous excessively high or even producing well water logging, not only considerably increase processing water
Expense and reduce crude output.
Water blockoff is a kind of measure for simply and effectively improving crude output, mainly there is Mechanical Method and chemical method at present.It is mechanical
Method water blockoff is only suitable for water exit clearly and there are the oil wells of certain thickness interlayer between water layer and oil reservoir, and requires oil well solid
Well quality will be got well.Chemical method water blockoff adapt to wider range, water shutoff agent is many kinds of, as polymer gel class, inorganic gel class,
Particulate species, foam class etc., wherein emulsion oil-in-water class water shutoff agent is a kind of typical selective water shutoff agent, and there is water blockoff not block up
The feature of oil.
Patent CN1644647A discloses a kind of " preparation method of modified paraffin selective water shutoff agent ", is by stone first
Oil-in-water emulsion is made in wax, oleic acid, stearic acid, ammonium hydroxide, water, then mixes modified paraffin lotion with Petropols, paper pulp, water
Water shutoff agent is made, in oil reservoir, the paraffin crystallized out is emulsified to be dispersed in crude oil the blocking agent, will not be entered to oil layer blocking
The modified paraffin crystal aggregation of aquaporin mutually bonds at biggish crystalline solid, plays ponding to blowhole.Patent
CN101935520B discloses a kind of " novel emulsion organic resin selective plugging agent ", by polyacrylamide, liquid organic resin (petroleum
Resin), surfactant (OP-100) and curing agent (methyl ethyl ketone peroxide) composition.Zhao Yongfeng etc. describes a kind of Water in Water Shutoff in Oil Field
It is diesel oil, emulsification with the preparation of reversed-phase emulsion and performance (Speciality Petrochemicals progress, 2011, the first phase), the material used
Agent, nano silica.
Summary of the invention
In order to improve the stability and water plugging property of water shutoff agent, the present invention provides a kind of lotion for oilwell water shutoff and
Preparation method.After the water shutoff agent injects stratum, not only stability is good, but also water layer can be effectively blocked, and does not block to crude oil
Effect, to reduce the moisture content of fluid produced by oil production well, improve crude output.
A kind of water blockoff of the invention is achieved in that with lotion
A kind of water blockoff lotion, the water blockoff lotion contain: oily phase, emulsifier, dispersing agent, stabilizer and water；
The oil is mutually one or more of dewatered oil, oil plant residual oil, pitch；The emulsifier is oleic acid, also
It may include one or more of in following substance: enuatrol, alkylbenzene sulfonate, sorbitan fatty acid ester；The dispersion
Agent agent is one or both of sodium humate, sodium lignin sulfonate；The stabilizer is sodium hydroxide, sodium carbonate, bicarbonate
One or more of sodium.
In the specific implementation, based on gross mass 100%, the water blockoff lotion contains: oily phase 20%-60%, emulsifier
0.05%-1%, dispersing agent 0.05%-3%, stabilizer 0.005%-0.8%；Preferred content be oily phase 40%-50%,
Emulsifier 0.1%-0.3%, dispersing agent 0.5%-1%, stabilizer 0.01%-0.5%.
In the specific implementation, the oil is mutually oil plant residual oil, and the emulsifier is that oleic acid and sodium alkyl benzene sulfonate press matter
Measure mixture than 3:1, the dispersing agent is sodium humate and the sodium lignin sulfonate mixture of 2:1 in mass ratio, described steady
Determining agent is sodium hydroxide and the sodium bicarbonate mixture of 10:1 in mass ratio.
In the specific implementation, the water blockoff lotion also contains stabilizing reinforcer, and the stabilizing reinforcer is sodium metaphosphate；
Based on gross mass 100%, in the water blockoff lotion, the content of the stabilizing reinforcer is less than or equal to 0.5%.
In the specific implementation, the preferred water blockoff lotion, based on gross mass 100%, oil is mutually 50%, emulsifier is
0.25%, dispersing agent 0.8%, stabilizer 0.35%, stabilizing reinforcer 0.1%, surplus are water.
A kind of preparation method of water blockoff lotion of the invention is achieved in that
Under agitation, the oleic acid is dissolved in the oily phase, by the emulsifier in addition to the oleic acid,
With the dispersing agent, the stabilizer, the stabilizing reinforcer, dissolution is dispersed in water, and obtains water phase；Then by the water phase
60-90 DEG C (preferably 70 DEG C) are heated to, the oil that temperature is 60-110 DEG C (preferably 90 DEG C) is mutually poured slowly into the water phase
In, in 1000r/min-2000r/min stirring down toward complete emulsification；Then cooling under the stirring of 200r/min-500r/min
To room temperature, the water blockoff lotion is obtained.
Water blockoff produced by the present invention is placed 30 days at room temperature with lotion, is slightly settled, and cementing phenomenon does not occur, gently shakes
The dynamic reagent bottle equipped with blocking agent, lotion becomes uniform, flowable, phenomena such as agglomeration.
Compared with prior art, water shutoff agent oil phase of the present invention, water, emulsifier, dispersing agent, stabilizer, stable increasing
Strong agent is prepared under conditions of heating, stirring, its main feature is that numerous emulsifiers synergistic effect emulsifying capacity is stronger, introduces
Emulsion intercalation method can be enhanced in dispersing agent, while the stabilizing reinforcer added can further increase cream with oil phase component phase separation
The stability of liquid, the blocking agent of formation oil in oil reservoir are mutually soluble in crude oil, meet oil and do not block up；Demulsification when encountering water phase, oil
Blocking duct is mutually precipitated.Lotion is diluted into injection oil well, after which injects stratum with lotion, not only stability when construction
It is good, and water layer can be effectively blocked, there is no plugging action to crude oil, to reduce the moisture content of fluid produced by oil production well, improve original
Oil yield.
Specific embodiment
Technical solution of the present invention is described in further detail below with reference to embodiment, protection scope of the present invention is not limited to following
Specific embodiment.
Embodiment 1:
This example is used to prepare oilwell water shutoff lotion.
Oily is mutually oil plant residual oil, and emulsifier is oleic acid and the sodium alkyl benzene sulfonate mixture of 3:1 in mass ratio, dispersing agent
For sodium humate and the sodium lignin sulfonate mixture of 2:1 in mass ratio, stabilizer is that sodium hydroxide and sodium bicarbonate press quality
Mixture than 10:1, stabilizing reinforcer are sodium metaphosphate.
Sequentially add water 53g under agitation in 250mL reaction vessel, sodium alkyl benzene sulfonate is by 0.125g, dispersion
Agent 1g, stabilizer 0.5g, stirring and dissolving are uniformly dispersed, by heated aqueous to 80 DEG C；0.375g oleic acid is dissolved in 45g oil phase
In, then oil at a temperature of 90 °C is mutually poured slowly into water phase under high velocity agitation, stirring arrives water blockoff to complete emulsification
Use lotion.
It places 1 month, agitated lotion restores uniform state again.0.3PV in rock core is injected, water phase permeability reduces
80%.
Embodiment 2:
This example is used to prepare oilwell water shutoff lotion.
Oily is mutually oil plant residual oil, and emulsifier is oleic acid and the sodium alkyl benzene sulfonate mixture of 3:1 in mass ratio, dispersing agent
For sodium humate and the sodium lignin sulfonate mixture of 2:1 in mass ratio, stabilizer is that sodium hydroxide and sodium bicarbonate press quality
Mixture than 10:1, stabilizing reinforcer are sodium metaphosphate.
Sequentially add water 50.4g, sodium alkyl benzene sulfonate 0.025g, dispersion under agitation in 250mL reaction vessel
Agent 0.8g, stabilizer 0.6, stabilizing reinforcer 0.1g, stirring and dissolving are uniformly dispersed, by heated aqueous to 80 DEG C；By 0.075g oil
Then acid dissolution is mutually poured slowly into oil at a temperature of 90 °C in water phase under high velocity agitation in 48g oil phase, stir to complete
Emulsification is to get to water blockoff lotion.
It places 1 month, agitated lotion restores uniform state again.0.3PV in rock core is injected, water phase permeability reduces
80%.
Claims (6)
1. a kind of water blockoff lotion, which is characterized in that the water blockoff lotion contains: oily phase, emulsifier, dispersing agent, stabilizer
And water；
Based on gross mass 100%, the water blockoff lotion contains: oily phase 40-50 weight %, emulsifier 0.1-0.3 weight %, dividing
Powder 0.5-1 weight %, stabilizer 0.01-0.5 weight %；
The oil is mutually oil plant residual oil, and the emulsifier is oleic acid and the sodium alkyl benzene sulfonate mixture of 3:1 in mass ratio, institute
Stating dispersing agent is sodium humate and the sodium lignin sulfonate mixture of 2:1 in mass ratio, and the stabilizer is sodium hydroxide and carbon
The sour hydrogen sodium mixture of 10:1 in mass ratio.
2. water blockoff lotion according to claim 1, it is characterised in that:
The water blockoff lotion also contains stabilizing reinforcer, and the stabilizing reinforcer is sodium metaphosphate.
3. water blockoff lotion according to claim 2, it is characterised in that:
Based on gross mass 100%, in the water blockoff lotion, the content of the stabilizing reinforcer are as follows: be less than or equal to 0.5 weight
Measure %.
4. water blockoff lotion according to claim 3, it is characterised in that:
Based on gross mass 100%, the composition of the water blockoff lotion are as follows: oily 50 weight % of phase, 0.25 weight % of emulsifier, dispersion
0.8 weight % of agent, 0.35 weight % of stabilizer, 0.1 weight % of stabilizing reinforcer, surplus is water.
5. the preparation method of water blockoff lotion described according to claim 1~one of 4, which is characterized in that this method include with
Lower step:
Under agitation, the oleic acid is dissolved in the oily phase, by addition to the oleic acid the emulsifier and institute
Dispersing agent, the stabilizer, the stabilizing reinforcer are stated, dissolution is dispersed in water, and obtains water phase；Then by the heated aqueous
To 60-90 DEG C, the oil that temperature is 60-110 DEG C is mutually poured slowly into the water phase, in 1000r/min-2000r/min
Stirring is down toward complete emulsification；Then it is cooled to room temperature under the stirring of 200r/min-500r/min, obtains the water blockoff cream
Liquid.
6. preparation method according to claim 5, it is characterised in that:
By the heated aqueous to 65-70 DEG C, then the oil that temperature is 90-100 DEG C is mutually poured slowly into the water phase,
Stirring is emulsified to complete；Then it is cooled to room temperature under stiring, obtains the water blockoff lotion.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111334263B (en) * | 2018-12-18 | 2022-10-04 | 中国石油天然气股份有限公司 | Self-selective plugging agent based on aging oil and water plugging method |
| 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 |
| CN112210357B (en) * | 2020-10-23 | 2023-03-03 | 中国石油大学(华东) | W/O/W type multiple emulsion water shutoff system and preparation method thereof |
| CN114479796A (en) * | 2020-11-12 | 2022-05-13 | 中国石油化工股份有限公司 | Low-cost vegetable oil gel system and preparation method thereof |
| CN113336884B (en) * | 2021-06-15 | 2023-01-10 | 长江大学 | Oil-water interface suspension water-control emulsion, and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876305A (en) * | 2011-07-14 | 2013-01-16 | 中国石油化工股份有限公司 | Oil well water shutoff agent and oil well water shutoff method |
| CN102952526A (en) * | 2011-08-26 | 2013-03-06 | 中国石油化工股份有限公司 | High-softening point emulsified asphalt water-based drilling fluid additive and preparation method thereof |
| CN103897678A (en) * | 2012-12-27 | 2014-07-02 | 中国石油化工股份有限公司 | Water-in-oil drilling fluid and preparation method thereof |
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- 2015-07-08 CN CN201510398915.7A patent/CN106318356B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876305A (en) * | 2011-07-14 | 2013-01-16 | 中国石油化工股份有限公司 | Oil well water shutoff agent and oil well water shutoff method |
| CN102952526A (en) * | 2011-08-26 | 2013-03-06 | 中国石油化工股份有限公司 | High-softening point emulsified asphalt water-based drilling fluid additive and preparation method thereof |
| CN103897678A (en) * | 2012-12-27 | 2014-07-02 | 中国石油化工股份有限公司 | Water-in-oil drilling fluid and preparation method thereof |
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