CN109577935A - A kind of combustion-supporting profile control technology of water logging fireflood oil reservoir - Google Patents
A kind of combustion-supporting profile control technology of water logging fireflood oil reservoir Download PDFInfo
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- CN109577935A CN109577935A CN201910017704.2A CN201910017704A CN109577935A CN 109577935 A CN109577935 A CN 109577935A CN 201910017704 A CN201910017704 A CN 201910017704A CN 109577935 A CN109577935 A CN 109577935A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 239000003599 detergent Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 32
- 238000002485 combustion reaction Methods 0.000 claims description 19
- -1 alkyl betaine Chemical compound 0.000 claims description 10
- 239000002671 adjuvant Substances 0.000 claims description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 claims description 8
- 239000004088 foaming agent Substances 0.000 claims description 8
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 6
- 229960003237 betaine Drugs 0.000 claims description 6
- 239000010779 crude oil Substances 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- 239000004343 Calcium peroxide Substances 0.000 claims description 4
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 4
- 235000019402 calcium peroxide Nutrition 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 4
- 239000002283 diesel fuel Substances 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 3
- QCCKPZOPTXCJPL-UHFFFAOYSA-N dodecyl(dimethyl)azanium;hydroxide Chemical compound [OH-].CCCCCCCCCCCC[NH+](C)C QCCKPZOPTXCJPL-UHFFFAOYSA-N 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- PRPAGESBURMWTI-UHFFFAOYSA-N [C].[F] Chemical compound [C].[F] PRPAGESBURMWTI-UHFFFAOYSA-N 0.000 claims description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 2
- NGLMYMJASOJOJY-UHFFFAOYSA-O azanium;calcium;nitrate Chemical compound [NH4+].[Ca].[O-][N+]([O-])=O NGLMYMJASOJOJY-UHFFFAOYSA-O 0.000 claims description 2
- 229940077388 benzenesulfonate Drugs 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims description 2
- 239000000571 coke Substances 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 239000011295 pitch Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 235000010333 potassium nitrate Nutrition 0.000 claims description 2
- 239000004323 potassium nitrate Substances 0.000 claims description 2
- 239000012286 potassium permanganate Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 125000000217 alkyl group Chemical group 0.000 claims 1
- 125000003368 amide group Chemical group 0.000 claims 1
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- 230000005465 channeling Effects 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 5
- 239000002981 blocking agent Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000007863 gel particle Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000006210 lotion Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fire-Extinguishing Compositions (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a kind of combustion-supporting profile control technologies of water logging fireflood oil reservoir.The technique includes: 1) the first slug: injecting the aqueous solution side 10-1000 that combustion-supporting envelope alters agent；2) the second slug: the injection water side 100-500 is isolated；3) third slug: flammable sealing agent 50-200 tons are injected；4) the 4th slug: pit shaft is cleaned using the water base greasy dirt detergent in the side 20-30；5) the 5th slug: the mark side 10000-20000 air is finally replaced.Combustion-supporting profile control technology of the invention is suitable for watered out reservoirs exploitation old area and penetrates layers apart level newly for fireflood injection well, and ignition success rate can be improved, firewire is made to promote uniform and stable, burning is abundant.
Description
Technical field
The invention belongs to field use fields.More particularly to a kind of combustion-supporting profile control technology of water logging fireflood oil reservoir.
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 combustion-supporting profile control technology of water logging fireflood oil reservoir, is suitable for
Layers apart level is penetrated newly for fireflood injection well in watered out reservoirs exploitation old area, and ignition success rate can be improved, firewire is made to promote uniform and stable,
Burning is abundant.
In order to achieve the goal above, the invention adopts the following technical scheme:
A kind of combustion-supporting profile control technology of water logging fireflood oil reservoir, the technique include:
1) the first slug: the aqueous solution side 10-1000 that combustion-supporting envelope alters agent is injected.
Preferably, it is 1%-100% that the combustion-supporting envelope, which alters the concentration of the aqueous solution of agent, including foaming agent and combustion-supporting
Agent.When concentration is 100%, as pure combustion-supporting envelope alters agent solution injection, without adding water dilution.
Preferably, the mass ratio of the foaming agent and combustion adjuvant is (80-90): (10-20).
Preferably, the foaming agent includes but is not limited to aliphatic alcohol polyoxyethylene sulfonate, alkyl betaine, alkyl acyl
Amine glycine betaine, azochlorosulfonate propyl lycine, phosphate ester glycine betaine, fluorine carbon surfactant, sodium alkyl benzene sulfonate, sodium alkyl sulfate,
The combination of one or more of the surfactants such as alkanolamide.Implement envelope by the Jamin effect of foaming agent to alter, auxiliary helps
Combustion agent keeps burning abundant.
Preferably, the combustion adjuvant includes but is not limited to ammonium persulfate, calcium ammonium nitrate, ammonium nitrate, potassium nitrate, potassium permanganate
The combination of one or more of oxidant of water is dissolved in potassium hyperchlorate etc..Combustion adjuvant catalyst combustion reaction, so that burning is filled
Point.
In a preferred embodiment of the invention, it includes: dodecyldimethylammonium hydroxide inner salt 40- that the combustion-supporting envelope, which alters agent,
50wt%, k-12 lauryl sodium sulfate 40-50wt%, ammonium persulfate 10-20wt%.
2) the second slug: the injection water side 100-500 is isolated.
In an embodiment of the present invention, second segment, which matches used water, can be clear water, be also possible to sewage.In a reality
It applies in example, used water is the sewage that the combustion-supporting envelope of cleaning alters agent solution storage can.
3) third slug: flammable sealing agent 50-200 tons are injected.
Preferably, flammable sealing agent includes incendivity organic matter and combustion adjuvant.
Preferably, the combustible organic include but is not limited to diesel oil, thin oil, viscous crude, residual oil, pitch, paraffin, rosin,
ABS plastic, PA12 plastic cement, starch (flour), coke or charcoal powder etc..Combustible organic can burn, and generate thermal energy and be used for
Fireflood；Pollution problem is not present for stratum, economizes on resources, improves final recovery ratio.
In a preferred embodiment of the invention, the flammable sealing agent includes diesel oil or the dilute crude oil of viscosity 100MPa.s or less
80-90wt%, flour (preferably former wheat band bran is commonly milled, and can also be commercially available long patent flour) 10-20wt%, calper calcium peroxide 1-
5wt%.
4) the 4th slug: using the water base greasy dirt detergent in the side 20-30 (commercially available or viscosity reduction cleaning agent), cleans pit shaft.
5) the 5th slug: the mark side 10000-20000 air is finally replaced.
After completing the above profile control technology, normal ignition technique is carried out.
Present invention is generally directed to more round steam soak blocks, and water logging, formation depletion is serious, and oil saturation is low, newly
Layers apart position is penetrated, the injection well of fireflood is prepared, by combustion-supporting profile control technology, reaches raising ignition success rate, firewire promotes uniformly flat
Surely, it burns sufficient purpose.
Technique of the invention includes the technique of a pressure water cone, and the purpose that the 5th slug injects air is following water
The water drive flooded in oil reservoir is walked, and exposes oil reservoir surface convenient for igniting, if the not profile control slug of front, will make upper layer air-breathing
Seriously, air-breathing or air-breathing be not few for lower layer, below water cone pressure do not go down, bottom oil layer does not just reveal not come out, and leads to loss of ignition.If adopting
It is drained with huge discharge gas injection, upper layer can be made to shift to an earlier date has channeling, although just starting water cone can also be subdued, arrive normal ignition gas injection
When discharge capacity presses design and operation, the water of the flooded part of lower part can be return, leads to bottom oil layer loss of ignition.
Compared with the prior art, the present invention has the following beneficial effects:
(1) flammable closure ingredient remains less, ignition success rate height.
(2) combustion adjuvant is added, burning is abundant.
(3) foaming agent is added, firewire promotes uniform and stable.
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:
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.
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 (9)
1. a kind of combustion-supporting profile control technology of water logging fireflood oil reservoir, which is characterized in that the technique includes:
1) the first slug: the aqueous solution side 10-1000 that combustion-supporting envelope alters agent is injected；
2) the second slug: the injection water side 100-500 is isolated；
3) third slug: flammable sealing agent 50-200 tons are injected；
4) the 4th slug: pit shaft is cleaned using the water base greasy dirt detergent in the side 20-30；
5) the 5th slug: the mark side 10000-20000 air is finally replaced.
2. the combustion-supporting profile control technology of water logging fireflood oil reservoir according to claim 1, which is characterized in that the combustion-supporting envelope alters agent
The concentration of aqueous solution is 1%-100%, including foaming agent and combustion adjuvant.
3. the combustion-supporting profile control technology of water logging fireflood oil reservoir according to claim 2, which is characterized in that the foaming agent and combustion-supporting
The mass ratio of agent is (80-90): (10-20).
4. the combustion-supporting profile control technology of water logging fireflood oil reservoir according to claim 2, which is characterized in that the foaming agent is fat
Alcohol polyethenoxy ether sulphonate, alkyl betaine, alkyl amido betaine, azochlorosulfonate propyl lycine, phosphate ester glycine betaine, fluorine carbon
The combination of one or more of surfactant, sodium alkyl benzene sulfonate, sodium alkyl sulfate and alkanolamide.
5. the combustion-supporting profile control technology of water logging fireflood oil reservoir according to claim 2, which is characterized in that the combustion adjuvant is over cure
The combination of one or more of sour ammonium, calcium ammonium nitrate, ammonium nitrate, potassium nitrate, potassium permanganate and potassium hyperchlorate.
6. the combustion-supporting profile control technology of water logging fireflood oil reservoir according to claim 2, which is characterized in that the combustion-supporting envelope alters agent packet
It includes: dodecyldimethylammonium hydroxide inner salt 40-50wt%, k-12 lauryl sodium sulfate 40-50wt%, ammonium persulfate 10-
20wt%.
7. the combustion-supporting profile control technology of water logging fireflood oil reservoir according to claim 1, which is characterized in that the flammable sealing agent packet
Include incendivity organic matter and combustion adjuvant.
8. the combustion-supporting profile control technology of water logging fireflood oil reservoir according to claim 7, which is characterized in that the combustible organic is
In diesel oil, thin oil, viscous crude, residual oil, pitch, paraffin, rosin, ABS plastic, PA12 plastic cement, starch and coke or charcoal powder
One or more of combinations.
9. the combustion-supporting profile control technology of water logging fireflood oil reservoir according to claim 7, which is characterized in that the flammable sealing agent packet
Include diesel oil or viscosity 100MPa.s or less dilute crude oil 80-90wt%, flour 10-20wt%, calper calcium peroxide 1-5wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017704.2A CN109577935B (en) | 2019-01-08 | 2019-01-08 | Water flooding fire flooding oil reservoir combustion-supporting profile control process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017704.2A CN109577935B (en) | 2019-01-08 | 2019-01-08 | Water flooding fire flooding oil reservoir combustion-supporting profile control process |
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| Publication Number | Publication Date |
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| CN109577935A true CN109577935A (en) | 2019-04-05 |
| CN109577935B CN109577935B (en) | 2020-12-01 |
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| CN201910017704.2A Active CN109577935B (en) | 2019-01-08 | 2019-01-08 | Water flooding fire flooding oil reservoir combustion-supporting profile control process |
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| CN101314710A (en) * | 2008-07-18 | 2008-12-03 | 中国石油大学(华东) | Oil displacement profile control agent, displacement of reservoir oil system and displacement of reservoir oil method |
| CN102061906A (en) * | 2010-12-09 | 2011-05-18 | 延长油田股份有限公司 | Air foam slug flow driving process for oil recovery of oil field |
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