CN106221688A - A kind of preparation method and applications technique of detergent - Google Patents
A kind of preparation method and applications technique of detergent Download PDFInfo
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- CN106221688A CN106221688A CN201610610207.XA CN201610610207A CN106221688A CN 106221688 A CN106221688 A CN 106221688A CN 201610610207 A CN201610610207 A CN 201610610207A CN 106221688 A CN106221688 A CN 106221688A
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- detergent
- base fluid
- nonionic surfactant
- oil
- water
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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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- 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
- C09K8/588—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 polymers
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses the preparation method and applications technique of a kind of detergent, base fluid is by A:10 15%, B:5 10%, C:15 20%, D:5 10%, E:5 10%, F:5 10%, G:5 10%, H:5 10%, water: the component of 10 20% percentage by weight proportionings prepares.The preparation method of the base fluid of detergent is according to proportioning, F and G is joined in the agitator tank of band heating, sequentially add A, B, C, D and E while stirring in agitator tank and be heated to being completely dissolved, be eventually adding H, temperature controls at 80 ± 5 DEG C, is incubated and prepares for 1 hour.Detergent is by above-mentioned base fluid 4%NaCl and 0.1%CaCl2Solution is configured to the aqueous solution of 1%, within 24 hours, prepares 90 DEG C of water-bath maintenances.The technique for applying of detergent uses detergent and CO2The oil production method that the technology of handling up combines, detergent displacement efficiency of the present invention is up to more than 97%, and then reaches single-wheel time and handle up and can improve the purpose of oil recovery factor 1%.
Description
Technical field
The invention belongs to technical field of tertiary oil recovery, be mainly used in the exploitation of High water cut old filed, relate to a kind of crude oil and use
The preparation method of detergent and the process of raising residual oil recovery ratio.It is specifically related to the preparation side of a kind of detergent
Method and technique for applying thereof.
Background technology
Have passed through the waterflooding extraction of more than ten years to decades, the in the world old filed of every country, the most
Entering High water cut, high recovery percent of reserves stage, China's old filed great majority have also had been enter into High water cut middle and late stage or ultra-high water cut stage
In the stage, comprehensive water cut is up to more than 80%, and great mass of data shows, when High water cut mining phase is an oil field development the most difficult
Phase, now, subterranean oil water sport and complex distribution, remaining oil disperses, and hole condition runs down, and water consumption steeply rises, and measure is imitated
Fruit is decreased obviously, and the oil field later stage difficulty of exploitation is increasing.But from the point of view of yearly rate-oil production and residual recoverable reserves, underground is still
Having substantial oil oil in place not to be extracted, the most considerable remaining oil is the abundant base produced in China's old filed increasing the storage
Plinth and the important evidence of raising recovery ratio.But, how under the conditions of existing economic technology, these remaining oils are opened economically
Extraction comes, and becomes particularly significant and urgently to be resolved hurrily the asking that China's High water cut old filed faces in the new development phase
Topic.
It is known that the recovery ratio of oil is closely related with sweep efficiency and displacement efficiency, oil recovery factor is equal to involving
Coefficient and the product of displacement efficiency, during water flooding, will improve oil recovery factor further, need to improve sweep efficiency
And displacement efficiency.Traditional Profile Control in Injection Well and oilwell water shutoff can improve the sweep efficiency injecting water, and can not improve injection
The displacement efficiency of water, from the mechanism improving recovery ratio, its effect is not enough, by High-efficiency oil displacement agent and CO2Handle up and tie mutually
Close, not only improve the sweep efficiency of injection water but also improve its displacement efficiency, make the mechanism of raising recovery ratio more comprehensively, can be more effectively
Reduce the moisture content of oil well liquid-producing, improve the oil production of oil well.Thus research and development one efficiently crude oil detergent also is applied to improve
The process of residual oil recovery ratio has highly important economic implications, is the important means of tertiary oil recovery technology.
Existing detergent is the most sensitive for salinity, higher in salinity, especially in the presence of high volence metal ion such as calcium
During magnesium, hydraulic performance decline is obvious so that its application is extremely restricted, and must research and develop for this and be suitable for actual oil field system stratum thing
The detergent of property.
Summary of the invention
It is an object of the invention to overcome the deficiency in the preparation of existing detergent and application technology thereof, it is provided that " a kind of washing oil
The preparation method and applications technique of agent ".This detergent design of components is reasonable, preparation technology simple, and prepared detergent is applied
Technique mainly uses High-efficiency oil displacement agent and CO2The oil production method that the technology of handling up combines, not only improved inject water sweep efficiency but also
Improve its displacement efficiency, can more effectively reduce the moisture content of oil well liquid-producing, to improve the oil production of oil well.Detergent of the present invention
Preparation and use cost is the lowest, construction safety, reliable, be effectively improved crude oil displacement efficiency, displacement efficiency is up to more than 97%, enters
And reach secondary the handling up of single-wheel and can improve the purpose of oil recovery factor 1%.
To achieve these goals, the present invention is achieved through the following technical solutions: one. the preparation of a kind of detergent
Method, comprises the following steps: the invention provides the base fluid of a kind of detergent, and this base fluid is by the group of following percentage by weight proportioning
Part prepares:
A: nonionic surfactant 10-15%,
B: anion surfactant 5-10%,
C: anion surfactant 15-20%,
D: nonionic surfactant 5-10%,
E: nonionic surfactant 5-10%,
F: organic acid 5-10%,
G: organic base 5-10%,
H: penetrating agent 5-10%,
Water: 10-20%.
Wherein, A: nonionic surfactant is NPE C33H60O10, B: anion surfactant is
Polyoxyethylene lauryl ether sodium sulfate C16H33O3SO4Na, C: anion surfactant is dodecylbenzene sodium sulfonate
C18H29NaO3S, D: nonionic surfactant is polyoxyethylene sorbitan fatty acid ester C58H114O26, E: non-ionic surface
Activating agent is sorbitan fatty acid fat (C24H44O6), F: organic acid is cis-9-18 (carbon) olefin(e) acid C18H34O2, G: organic
Alkali is triethanolamine C6H15O6N, H: penetrating agent is polyoxyethylene ether compound H (OCH2CH2)n OH。
Preferably, this base fluid is prepared by the component of following percentage by weight proportioning:
A: nonionic surfactant 15%
B: anion surfactant 5%
C: anion surfactant 15%
D: nonionic surfactant 10%
E: nonionic surfactant 5%
F: organic acid 10%
G: organic base 10%
H: penetrating agent 10%
Water: 20%.
Preferably, this base fluid is prepared by the component of following percentage by weight proportioning:
A: nonionic surfactant 10%
B: anion surfactant 10%
C: anion surfactant 20%
D: nonionic surfactant 10%
E: nonionic surfactant 10%
F: organic acid 10%
G: organic base 10%
H: penetrating agent 10%
Water: 10%.
The invention provides the preparation method of the base fluid of above-mentioned detergent, the method comprises the steps:
(1) according to proportioning, F and G is joined in the agitator tank of band heating, stirs to being completely dissolved,
(2) A, B, C, D and E are sequentially added while stirring in agitator tank and be heated to being completely dissolved,
(3) being eventually adding H, temperature controls at 80 ± 5 DEG C,
(4) insulation 1 hour, i.e. prepares the base fluid of the detergent of the present invention.
Present invention also offers a kind of detergent, this detergent is by above-mentioned base fluid 4%NaCl and 0.1%CaCl2Solution
It is configured to the aqueous solution of 1%, within 24 hours, prepares 90 DEG C of water-bath maintenances.
Two, present invention also offers the technique for applying of above-mentioned detergent, this technique mainly uses High-efficiency oil displacement agent and CO2Gulp down
The oil production method that the technology of telling combines, comprises the following steps:
Detergent utilize liquid distributing vehicle dilute dosing.
(1), detergent is injected by oil jacket annular space to oil well target zone initially with cementing truck；
(2), special liquid CO is then used2Injection pump injects liquid CO by oil jacket annular space in stratum2；
(3) stewing well after, having injected；
(4), after stewing well pressure stably drives a well open flow, machine pumping is produced.
Further technical scheme is that described in step (1), its concentration of detergent is 0.5-2%, and injection pressure is less than stratum
Fracture pressure, injection rate controls 10～15m3/ h, total injection controls to note 80m at every meter of high permeability zone thickness3Detergent.
Further technical scheme is that described in step (1), its concentration of detergent is 1.2%.
Further technical scheme is, in step (2), and described injection liquid CO in stratum2, its injection rate controls
3.5～4t/h, total injection controls to note 15t liquid CO at every Miyou layer thickness2。
Further technical scheme is that, in step (3), the described stewing well time is 7～10d.
Further technical scheme is, treats that pressure stability, the change of specific requirement pressure are less than described in step (4)
0.05MPa/d。
Use the designed detergent prepared of the present invention and technique for applying thereof compared with prior art, have the advantage that
1. this detergent design of components is reasonable, preparation technology simple, and prepared detergent technique for applying mainly uses efficient washing oil
Agent and CO2The oil production method that the technology of handling up combines, not only improves the sweep efficiency of injection water but also improves its displacement efficiency, can more have
Effect ground reduces the moisture content of oil well liquid-producing, to improve the oil production of oil well.Detergent of the present invention preparation and use cost is the lowest, execute
Work is safe and reliable, is effectively improved crude oil displacement efficiency, and displacement efficiency is up to more than 97%, and then reaches single-wheel time and handle up and can improve
The purpose of oil recovery factor 1%.
2, using the detergent of the designed preparation of the present invention after testing: surface tension 27.90mN/m, content of organic chloride is 0,
There is good salt tolerant and heat resistance.
3, because injecting detergent, the washing oil of heat-resistant salt-resistant by oil jacket annular space to oil well target zone initially with cementing truck
Agent can will be attached to the crude oil of rock surface and be effectively peeled off by changing rock wettability, improves the mobility ratio of crude oil and water,
Crude oil is more prone in the earth formation migrate, improve oil recovery factor with this.
4. because using special liquid CO2Injection pump injects liquid CO by oil jacket annular space in stratum2, can be with disturbance warp
Crossing the movable residual oil after detergent effect, viscosity reduction ability is mutually collaborative and strengthens, and plays overall driving effect, CO2Constantly with
There is the mutual transmission of quality, kinetic energy and heat energy between moveable oil, improve detergent sweep area and depth of interaction, the most permissible
Reduce viscosity of crude, supplement stratum energy, and owing to gas-liquid density contrast is relatively big, the less gas of gas viscosity floats, and forms pneumatic jack,
Push away under oil-water interfaces, reduce well water.
5. after having injected, stewing well, makes High-efficiency oil displacement agent and CO2Fully react with crude oil in the earth formation, reach to improve further
Sweep efficiency and the purpose of displacement efficiency, and then reach single-wheel and time handle up and can improve the purpose of oil recovery factor 1%.
Detailed description of the invention
Below by non-limiting example, the present invention is expanded on further, understands the present invention.
One, detergent prepares embodiment
The preparation method of a kind of detergent comprises the steps:
1, the base fluid of detergent, this base fluid is prepared by the component of following percentage by weight proportioning:
Embodiment 1:A:15%, B:5%, C:15%, D:10%, E:5%, F:10%, G:10%, H:10%, water: 20%.
Embodiment 2:A:10%, B:10%, C:20%, D:10%, E:10%, F:10%, G:10%, H:10%, water: 10%.
Embodiment 3:A:15%, B:5%, C:15%, D:5%, E:10%, F:10%, G:10%, H:10%, water: 20%.
Embodiment 4:A:12%, B:8%, C:15%, D:8%, E:8%, F:10%, G:10%, H:10%, water: 19%.
Embodiment 5:A:12%, B:8%, C:20%, D:8%, E:5%, F:10%, G:10%, H:10%, water: 17%.
2, the preparation method of the base fluid of detergent, the method comprises the steps:
150ml distilled water is added at 1000ml agitator tank.
(1) according to embodiment 1-5 proportioning, first being joined by F and G in the agitator tank of band heating, stirring is to being completely dissolved；
(2) A, B, C, D and E are sequentially added while stirring in agitator tank and be heated to being completely dissolved,
(3) being eventually adding H, temperature controls at 80 ± 5 DEG C；
(4) insulation 1 hour, i.e. prepares the base fluid of the detergent of the present invention.
3, the preparation of detergent
1) this detergent is by above-mentioned base fluid 4%NaCl and 0.1%CaCl2Solution is configured to the aqueous solution of 1%, 90 DEG C of water-baths
Maintenance prepares for 24 hours.
Use standard is all met through the detergent combination property prepared by embodiment 1-5 being measured, detecting its technical specification
Requirement, especially obvious with embodiment 1-2 effect, concrete technical specification is:
Detergent concentration is 0.3% aqueous solution surface tension 28.28mN/m, and content of organic chloride is 0, and washing oil rate is up to 97.71%(waist
42 well crude oil).
4%NaCl and 0.1%CaCl2Sample is made into the aqueous solution of 1% by solution jointly, after maintenance 24 hours, and solution surface
Tension force 27.82 mN/m, salt resistant character is good.
4%NaCl and 0.1%CaCl2Sample is made into the aqueous solution of 1% by solution jointly, 90 DEG C of water-bath maintenances 24 hours, molten
Liquid surface tension 27.90mN/m, heat resistance is good.
Two, detergent Application Example
Detergent used herein is the detergent containing kinds of surface activating agent composition prepared by the present invention.
The technique for applying of a kind of detergent, comprises the following steps:
The first step, first detergent utilize liquid distributing vehicle be diluted to the aqueous solution that concentration is 1.2%, according to laboratory data concentration
It is 0.3% aqueous solution, its surface tension 28.28mN/m, washing oil rate is up to 97.71%(waist 42 well crude oil), but in view of target zone
The many practical factors existed, for guaranteeing that washing oil rate reaches more than 97%, for this, detergent being diluted to concentration is 1.2%.According to 1m
Thickness high permeability zone uses detergent 80m3Determining total injection rate, it is the most on-the-spot that water-tank lorry transports the medicament configured, and cementing truck leads to
Crossing oil jacket annular space and inject target zone, injection rate controls 10～15m3/h。
Second step, then in stratum, inject liquid CO by oil jacket annular space2, gas injection equipment uses special liquid CO2Note
Entering pump, injection rate determines according to 15t/m according to core intersection, on the premise of injection pressure is less than fracture pressure, carries as far as possible
High injection rate, should keep more than 100t/d in principle, it is contemplated that site specific injection rate controls 3.5～4t/h.
3rd step, injected after stewing well, make detergent at CO2Agitation under be sufficiently mixed with remaining oil, improve washing oil
Efficiency, increases stratum energy simultaneously, and after stewing well 7～10d pressure stability, then (pressure change is less than 0.05MPa/d) drive a well open flow
Recovery machine pumping is produced.
In sum, this detergent design of components is reasonable, preparation technology simple, and prepared detergent technique for applying is mainly adopted
With High-efficiency oil displacement agent and CO2The oil production method that the technology of handling up combines, not only improves the sweep efficiency of injection water but also improves its washing oil
Efficiency, can more effectively reduce the moisture content of oil well liquid-producing, to improve the oil production of oil well.Detergent of the present invention preparation and use
Cost is the lowest, construction safety, reliable, be effectively improved crude oil displacement efficiency, displacement efficiency is up to more than 97%, and then reaches single-wheel
Secondary handling up can improve the purpose of oil recovery factor 1%.
Claims (10)
1. the base fluid of a detergent, it is characterised in that this base fluid is prepared by the component of following percentage by weight proportioning:
A: nonionic surfactant 10-15%,
B: anion surfactant 5-10%,
C: anion surfactant 15-20%,
D: nonionic surfactant 5-10%,
E: nonionic surfactant 5-10%,
F: organic acid 5-10%,
G: organic base 5-10%,
H: penetrating agent 5-10%,
Water: 10-20%；
Wherein, A: nonionic surfactant is NPE, C33H60O10；B: anion surfactant is the moon
Cinnamic alcohol polyethenoxy ether sodium sulfate C16H33O3SO3Na；C: anion surfactant is dodecylbenzene sodium sulfonate
C18H29NaO3S；D: nonionic surfactant is polyoxyethylene sorbitan fatty acid ester C58H114O26；E: non-ionic surface
Activating agent is sorbitan fatty acid fat (C24H44O6) ；F: organic acid is cis-9-18 (carbon) olefin(e) acid C18H34O2；G: have
Machine alkali is triethanolamine C6H15O6N；H: penetrating agent is polyoxyethylene ether compound H (OCH2CH2)n OH。
Base fluid the most according to claim 1, it is characterised in that this base fluid is prepared by the component of following percentage by weight proportioning
Obtain:
A: nonionic surfactant 15%
B: anion surfactant 5%
C: anion surfactant 15%
D: nonionic surfactant 10%
E: nonionic surfactant 5%
F: organic acid 10%
G: organic base 10%
H: penetrating agent 10%
Water: 20%.
Base fluid the most according to claim 1, it is characterised in that this base fluid is prepared by the component of following percentage by weight proportioning
Obtain:
A: nonionic surfactant 10%
B: anion surfactant 10%
C: anion surfactant 20%
D: nonionic surfactant 10%
E: nonionic surfactant 10%
F: organic acid 10%
G: organic base 10%
H: penetrating agent 10%
Water: 10%.
4. the preparation method of the base fluid described in any one of claim 1-3, it is characterised in that the method comprises the steps:
(1) according to proportioning, F and G is joined in the agitator tank of band heating, stirs to being completely dissolved,
(2) A, B, C, D and E are sequentially added while stirring in agitator tank and be heated to being completely dissolved,
(3) being eventually adding H, temperature controls at 80 ± 5 DEG C,
(4) insulation 1 hour, i.e. prepares the base fluid of the detergent of the present invention.
5. a crude oil detergent, it is characterised in that this detergent by the base fluid described in any one of claim 1-3 with 4%
NaCl and 0.1%CaCl2Solution is configured to the solution of 1%, within 24 hours, prepares 90 DEG C of water-bath maintenances.
6. the technique for applying of the detergent used described in claim 5, it is characterised in that comprise the following steps:
(1), detergent is injected by oil jacket annular space to oil well target zone initially with cementing truck；
(2), special liquid CO is used2Injection pump injects liquid CO by oil jacket annular space in stratum2；
(3) stewing well after, having injected；
(4), after stewing well pressure stably drives a well open flow, machine pumping is produced.
The technique for applying of a kind of detergent the most according to claim 6, it is characterised in that detergent described in step (1)
Its concentration is 0.5-2%, and injection pressure is less than formation fracture pressure, and injection rate controls 10～15m3/ h, total injection controls
80m is noted at every meter of high permeability zone thickness3Detergent.
The technique for applying of described a kind of detergent the most according to claim 6, it is characterised in that described in step (1)
Its concentration of crude oil detergent is 1.2%.
The technique for applying of a kind of detergent the most according to claim 6, it is characterised in that in step (2), described to ground
Liquid CO is injected in Ceng2, its injection rate controls 3.5～4t/h, and total injection controls to note 15t liquid at every Miyou layer thickness
CO2。
The technique for applying of a kind of detergent the most according to claim 6, it is characterised in that in step (3), described stewing well
Time is 7～10d, treats pressure stability described in step (4), and the change of specific requirement pressure is less than 0.05MPa/d.
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| CN106968652A (en) * | 2017-03-27 | 2017-07-21 | 姚莉芳 | A kind of auxiliary carbon dioxide is handled up new method |
| CN113403057A (en) * | 2021-04-12 | 2021-09-17 | 中国地质大学（武汉） | In-situ generated middle-phase microemulsion washing oil system and preparation method thereof |
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Application publication date: 20161214 |