CN109652040A - A kind of flammable sealing agent of water logging fireflood oil reservoir oil base - Google Patents
A kind of flammable sealing agent of water logging fireflood oil reservoir oil base Download PDFInfo
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- CN109652040A CN109652040A CN201910014166.1A CN201910014166A CN109652040A CN 109652040 A CN109652040 A CN 109652040A CN 201910014166 A CN201910014166 A CN 201910014166A CN 109652040 A CN109652040 A CN 109652040A
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- sealing agent
- water logging
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- flammable sealing
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
- C09K8/493—Additives for reducing or preventing gas migration
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
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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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of flammable sealing agents of water logging fireflood oil reservoir oil base.The water logging flammable sealing agent of fireflood oil reservoir oil base includes carrying agent, flammable sealing agent principal component and combustion adjuvant；The carrying agent is that oil base carries agent；The flammable sealing agent principal component is the combination of one or more of residual oil, pitch, paraffin, rosin, starch and coke or charcoal powder；The combustion adjuvant is the combination of one or both of calper calcium peroxide and manganese dioxide.Present invention is generally directed to more round steam soak blocks, and water logging, formation depletion is serious, and near wellbore zone oil saturation is extremely low (aqueous to be greater than 99%), prepare the injection well of fireflood.Flammable sealing agent principal component and combustion adjuvant are carried by oil, provides combustible organic while carrying out profile control closure near wellbore zone, making igniting, uniformly burning is abundant.
Description
Technical field
The invention belongs to field use fields.More particularly to a kind of flammable sealing agent of water logging fireflood oil reservoir oil base.
Background technique
Fireflood is exactly using the heavy component in in-place oil as fuel, using air or oxygen rich gas as combustion-supporting
Agent takes the methods of spontaneous combustion and manual firing that reservoir temperature is made to reach crude oil burning point, and is continuously injected into combustion adjuvant, makes Crude Oil
Sustained combustion, combustion reaction generates a large amount of heat, heated oil reservoir, so that reservoir temperature rises to 600~700 DEG C, heavy component
It cracks at high temperature, the gas and water vapour of light oil, burning generation that gas, the heavy oil pyrolysis of injection generate are for driving
Crude oil is flowed to producing well, and is produced from producing well.
It is that air onlap is serious that combustion in situ, which recovers the oil there are a significant deficiency, and top development degree is big, when exploitation enters
Certain degree can cause has channeling, and especially own to develop oil reservoir, has channeling degree is bigger.
Current common ignition process causes fire floor position to employ unevenness, and the oil reservoir for being not suitable for fireflood generates coking waste,
Subsequent developable resource is greatly reduced, the heavy crude reservoir of steam soak exploitation is carried out especially for oneself, coking waste is asked
Topic is particularly acute.
Heavy oil wells envelope alter technical aspect mainly and have the particulate species such as traditional cements blocking agent, high temperature organogel, thermosetting resin,
The types such as gel particle blocking agent, foam class water shutoff agent.The wherein particulate species such as traditional cements blocking agent there are partial sizes big, non-selectivity,
The disadvantages of easily causing reservoir damage；High temperature organogel is on the high side；Thermosetting resin non-selectivity, curing rate are non-to temperature
It is often sensitive, poor controllability；Gel particle blocking agent can not inject earth formation deep；Foam class water shutoff agent plugging strength is too low, stratum is suitable
Answering property is poor.
Patent 201510909656.X discloses a kind of fireflood envelope and alters agent and preparation method thereof；Patent 201410592158.2
Disclose a kind of combustion in situ ignition method and device；Patent 201410592160.X discloses a kind of combustion in situ combustion-assistant ignition
Method；Patent 201510887763.7 discloses a kind of regulating section of oil wells agent and its preparation and application；Patent 201611253606.1
Disclose a kind of sulfur-fixating combustion-promoting high temp profile control agent and the preparation method and application thereof；Patent 201610617729.2 disclose it is a kind of to
The equipment of coal dust and the ignition method of combustion in situ are injected in oil reservoir；Patent 201410592183.0 discloses a kind of oil exploitation
In profile control envelope alter method and device；Patent 201610116728.X discloses the tune in the has channeling channel of a kind of pair of fireflood gas injection well
Cut open method and its tubing string；Patent 201510887763.7 discloses a kind of regulating section of oil wells agent and its preparation and application；Patent
201610454433.3 disclosing a kind of method of combustion in situ air foam profile control；Viscous crude fireflood profile control temporarily blocks up mechanism experiment and grinds
Study carefully, " Inner Mongol petrochemical industry ", 1006-7981, (2011) 22-0154-03；Heavy crude reservoir fireflood injection-production well chemical regulation skill
Art, " special reservoirs ", 2016,23 (5): 122-125；The research of thin interbed heavy crude reservoir fireflood development behavior control technique, " changes
Work management ", 2014 (20): 118-118.
The fireflood reservoir profile method mentioned in above-mentioned patent and article, profile control envelope used, which alters agent, to burn, and exist
In various degree the problem of pollution stratum, efficient resource is wasted, the raising of ultimate recovery is influenced.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of water logging fireflood oil reservoir oil base flammable sealing agent, is applicable in
In water logging heavy crude reservoir, oil saturation extremely low (aqueous to be greater than 99%) fireflood injection well near wellbore zone makes igniting uniformly, combustion
It burns abundant.
In order to achieve the goal above, the invention adopts the following technical scheme:
A kind of flammable sealing agent of water logging fireflood oil reservoir oil base, including carry agent, flammable sealing agent principal component and combustion adjuvant；
The carrying agent is that oil base carries agent；
The flammable sealing agent principal component includes but is not limited to residual oil, pitch, paraffin, rosin, starch (flour) and coke
Or the combination of one or more of charcoal powder etc., it is flammable solid or semisolid；
The combustion adjuvant is the combustion adjuvant for being insoluble in water, is the group of one or both of calper calcium peroxide and manganese dioxide
It closes.
Present invention is generally directed to more round steam soak blocks, and water logging, formation depletion is serious, near wellbore zone oil-containing saturation
It spends extremely low (aqueous to be greater than 99%), prepares the injection well of fireflood.Flammable sealing agent principal component and combustion adjuvant are carried by oil, right
Near wellbore zone carries out providing combustible while profile control closure, and making igniting, uniformly burning is abundant.Water logging fireflood oil reservoir of the invention
Oil base is flammable, and sealing agent can be used alone, and other combustion-supporting envelopes can also be cooperated to alter agent use.
Preferably, in the flammable sealing agent of the water logging fireflood oil reservoir oil base each ingredient mass percentage content are as follows: carry
Agent 80%-90%, flammable sealing agent principal component 10%-20%, combustion adjuvant 1%-5%.
Preferably, it is diesel oil or viscosity 100MPa.s dilute crude oil below that the oil base, which carries agent,.
Preferably, the flammable sealing agent principal component is starch, i.e. flour, and preferably former wheat band bran is commonly milled, can also
It is commercially available long patent flour.
Preferably, the combustion adjuvant is calper calcium peroxide.
Preferably, the usage amount of the flammable sealing agent of the water logging fireflood oil reservoir oil base is 50-200 tons.
In a preferred embodiment of the invention, the proportion of the flammable sealing agent of the sealing agent water logging fireflood oil reservoir oil base
Are as follows: diesel oil or viscosity 100MPa.s dilute crude oil 80%-90% below, starch 10%-20%, calper calcium peroxide 1%-5%.
Compared with the prior art, the present invention has the following beneficial effects:
(1) flammable sealing agent supplements near wellbore zone combustible, combustion even.
(2) combustion adjuvant is added, burning is abundant.
(3) it has both profile control envelope and alters double effects.
Specific embodiment
In order to illustrate more clearly of the present invention, below with reference to preferred embodiment, the present invention is described further.Ability
Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, this should not be limited with this
The protection scope of invention.
Embodiment 1:
The present embodiment is to cooperate other envelopes to alter agent to complete as third slug.
10 meters of 14 substratum is newly penetrated out in building oil reservoir fireflood injection well in certain oil field, and water logging, well-flushing is oil-free, according to offset well data,
There is has channeling risk.For smooth ignition, implement following technique:
1, scheme tripping in electric ignition tool is pressed.
2, combustion-supporting envelope alters agent: dodecyldimethylammonium hydroxide inner salt 40%, k-12 lauryl sodium sulfate 40%, ammonium persulfate
20%, weight percent, technical grade.Clear water prepares 10% solution, and the first slug injects 208 sides.Injection pressure 0.5MPa, injection
Speed 30m3/h。
3, clear water washes above-mentioned combustion-supporting envelope and alters agent storage can, and washing lotion continues to inject 180 side of stratum as the second slug.Injection pressure
Power 0.8MPa, injection rate 30m3/h。
4, flammable sealing agent: 80 tons of the dilute crude oil of viscosity 56MPa.s, 19 tons of commercially available long patent flour, 1 ton of calper calcium peroxide.By city
Sell long patent flour and calper calcium peroxide be slowly added in order uniform stirring it is abundant after, as third slug inject.Injection pressure from
0.8MPa rises to 3.6MPa, injection rate 15m3/h。
5, the injection commercially available water-based industrial greasy dirt detergent of 25 sides cleans pit shaft as the 4th slug.Injection pressure
3.5MPa, injection rate 10m3/h。
6, air replaces: 15000 mark side's air are finally replaced as the 5th slug.Gas injection speed 9138Nm3/ d, note
Atmospheric pressure 5.5MPa.
7, electric ignition device is opened, normal ignition process is started.The well designs 450 DEG C of firing temperature or more, and maximum is implemented
Power 93KW, lights a fire 15 days by 461 DEG C of actual ignition temperature, gas injection speed 19720Nm3/ d, gas injection pressure 6.0-5.5-
5.8MPa.The trend that rises afterwards first drop in presentation, and flammable profile control agent participation burning zone, pressure is declined, the later period with gas injection rate increasing
Add, pressure is gone up again.
8, the well is smoothly lighted, and has channeling does not occur for corresponding producing well, reaches construction purpose.
Embodiment 2:
Certain oilfield fireflood injection well, water logging, well-flushing is oil-free, and near wellbore zone is in debt serious, and data is shown, oil saturation pole
It is low.For smooth ignition, implement following technique:
1, scheme tripping in electric ignition tool is pressed.
2,70 tons of refinery's slurry oil are selected, slurry oil is adjusted to 50 DEG C of viscosity 375mPa.s with diesel oil, it is spare.
3, calper calcium peroxide 5% is uniformly blended into above-mentioned stock, forms incendivity sealing agent.
4, incendivity sealing agent is injected stratum to 65 DEG C, then with injection device by preheating incendivity sealing agent.Injection pressure
From 2MPa, 7.2MPa, injection rate 10m are risen to3/h。
5, the injection commercially available water-based industrial greasy dirt detergent pit shaft of 45 sides cleans.Injection pressure 7.2-6.8MPa, injection
Speed 8m3/h。
6, it is replaced with 12000 mark side's air, makes pit shaft liquid level to oil reservoir lower bound.Gas injection speed 18346Nm3/ d, note
Atmospheric pressure 8.5MPa.
7, electric ignition device is opened, normal ignition process is started.The well designs 450 DEG C of firing temperature or more, and maximum is implemented
Power 95KW, lights a fire 21 days by 462 DEG C of actual ignition temperature, gas injection speed 18073Nm3/ d, gas injection pressure 8.5-9.2MPa.
8, the smooth quick high-temp oxidation of the well is lighted, and has channeling does not occur for corresponding producing well, reaches construction purpose.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (7)
1. a kind of flammable sealing agent of water logging fireflood oil reservoir oil base, which is characterized in that including carry agent, flammable sealing agent principal component and
Combustion adjuvant；
The carrying agent is that oil base carries agent；
The flammable sealing agent principal component be one of residual oil, pitch, paraffin, rosin, starch and coke or charcoal powder or
Several combinations；
The combustion adjuvant is the combination of one or both of calper calcium peroxide and manganese dioxide.
2. the flammable sealing agent of water logging fireflood oil reservoir oil base according to claim 1, which is characterized in that the water logging fireflood oil
Hide the mass percentage content of each ingredient in the flammable sealing agent of oil base are as follows: carry agent 80%-90%, flammable sealing agent principal component
10%-20%, combustion adjuvant 1%-5%.
3. the flammable sealing agent of water logging fireflood oil reservoir oil base according to claim 1, which is characterized in that the oil base carries agent
For diesel oil or viscosity 100MPa.s dilute crude oil below.
4. the flammable sealing agent of water logging fireflood oil reservoir oil base according to claim 1, which is characterized in that the flammable sealing agent
Principal component is starch.
5. the flammable sealing agent of water logging fireflood oil reservoir oil base according to claim 1, which is characterized in that the combustion adjuvant was
Calcium oxide.
6. the flammable sealing agent of water logging fireflood oil reservoir oil base according to claim 1, which is characterized in that the water logging fireflood oil
The usage amount for hiding the flammable sealing agent of oil base is 50-200 tons.
7. the flammable sealing agent of water logging fireflood oil reservoir oil base according to claim 1, which is characterized in that the sealing agent water logging
The proportion of fireflood oil reservoir oil base is flammable sealing agent are as follows: diesel oil or viscosity 100MPa.s dilute crude oil 80%-90% below, starch
10%-20%, calper calcium peroxide 1%-5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910014166.1A CN109652040B (en) | 2019-01-08 | 2019-01-08 | Water flooding fire flooding oil reservoir oil-based combustible plugging agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910014166.1A CN109652040B (en) | 2019-01-08 | 2019-01-08 | Water flooding fire flooding oil reservoir oil-based combustible plugging agent |
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| CN109652040A true CN109652040A (en) | 2019-04-19 |
| CN109652040B CN109652040B (en) | 2021-01-29 |
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