CN106837268A - Control water gas-injection oil-production integration method for increasing - Google Patents
Control water gas-injection oil-production integration method for increasing Download PDFInfo
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- CN106837268A CN106837268A CN201710079288.XA CN201710079288A CN106837268A CN 106837268 A CN106837268 A CN 106837268A CN 201710079288 A CN201710079288 A CN 201710079288A CN 106837268 A CN106837268 A CN 106837268A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 155
- 238000002347 injection Methods 0.000 title claims abstract description 76
- 239000007924 injection Substances 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000010354 integration Effects 0.000 title claims abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 144
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 73
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000006260 foam Substances 0.000 claims abstract description 25
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 23
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims abstract description 17
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 11
- 239000003921 oil Substances 0.000 description 96
- 238000001802 infusion Methods 0.000 description 34
- 238000010276 construction Methods 0.000 description 19
- 239000007788 liquid Substances 0.000 description 18
- 238000013461 design Methods 0.000 description 12
- 239000010779 crude oil Substances 0.000 description 9
- 239000012530 fluid Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000003129 oil well Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 235000020681 well water Nutrition 0.000 description 4
- 239000002349 well water Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 206010020852 Hypertonia Diseases 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- -1 control aqua Substances 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004401 flow injection analysis Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004391 petroleum recovery Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000005514 two-phase flow Effects 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
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- 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
- E21B43/164—Injecting CO2 or carbonated water
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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
It is a kind of to be applied to High water cut or there is huge water outlet risk oil reservoir water production control amount and to improve the method for increasing of oil production on stream the invention discloses control water gas-injection oil-production integration method for increasing.Including nitrogen injection foam water plugging, control aqua control water, the displacement of reservoir oil of nitrogen injection rigidity, carbon dioxide oil recovery and the orderly combination of above-mentioned each individual event step.Present invention can be implemented in bottom water coning, water layer alter groove, injection water or side water advance by leaps and bounds, oil-water common-layer, wide-angle crack link up water layer oil reservoir and because the aqueous oil reservoir that casing deformation cannot carry out water pack off carries out effective water blockoff and deep layer control water, reduce the water yield during oil reservoir development or reduce water outlet risk, effectively employing for the remaining oil resource for being distributed in differently band is realized simultaneously, so as to meet the demand of aqueous oil reservoir water-control oil-increasing, Efficient Development, comprehensive exploitation benefit is improved.
Description
Technical field
The present invention provides one kind and is applied to High water cut or there is water production control amount during huge water outlet risk oil reservoir development
And improve the method for increasing of oil production, and in particular to control water gas-injection oil-production integration method for increasing.
Background technology
During oil reservoir development, due to bottom water coning, water layer alter groove, injection water or side water advance by leaps and bounds, oil-water common-layer, wide-angle
The reasons such as water layer are linked up in crack, often cause the rising of well water amount, moisture content to raise even sudden water flooding, so as to cause oil
Well oil production reduces not even oil-producing and causes to close down, so as to cause oil reservoir produced low degree, development effectiveness not good.So, it is right
In the oil reservoir of water outlet on stream or there is the oil reservoir of huge water outlet risk, not only need to be controlled to producing water, more
Oil production need to be improved in control water simultaneously.
Conventional oilwell water shutoff water control technique includes two kinds of mechanical system and chemical mode：Mechanical system such as packer point
Layer water control technique, intelligent sliding sleeve water blockoff water control technique etc., because the distribution of oil and water layers unclear or distribution of oil and water layers of understanding is excessively complicated
It is often inefficient etc. reason；Chemical mode nitrogen injection and polymer composite water shutoff agent etc., although water blockoff control water is imitated
Fruit is relatively preferable, but limited in one's ability for oil reservoir remaining oil producing, often can not effectively improve oil while water blockoff control water
The oil production of well.
Because the purpose of oil reservoir development is to improve crude oil recovery percent of reserves, occur on well water when in oilfield development process
Rise, when water outlet is serious or faces huge water outlet risk, needing one kind badly effectively water blockoff, deep layer control water and can improve well oil output
With the technology of oil reservoir produced degree, the Efficient Development to aqueous oil reservoir is realized.
The content of the invention
It is an object of the invention to provide control water gas-injection oil-production integration method for increasing, high water-cut reservoir and face are mainly solved
Face during huge water outlet risk oil reservoir development, water blockoff control water effect on driving birds is not good, well oil output and underground crude oil recovery percent of reserves are low
The problems such as, present invention offer is a kind of can be realized efficient water blockoff control water and effectively improve the side of aqueous oil deposil erude petroleum recovery ratio
Method.
To achieve these goals, the technical solution adopted by the present invention is as follows：
Control water gas-injection oil-production integration method for increasing, including nitrogen filling foam water blockoff, control aqua control water, nitrogen injection rigidly drive
Oil, carbon dioxide oil recovery and the orderly combination of above-mentioned each individual event step.
Specifically, the nitrogen filling foam water blockoff forms nitrogen using nitrogen is prepared in situ with the form of glue mixed water injection
Foam system.
Further, the control aqua control water uses the control aqua with oil water stop function thoroughly in nitrogen filling foam water blockoff reality
Implemented while applying.
Yet further, the nitrogen filling foam water blockoff, control aqua control water, the displacement of reservoir oil of nitrogen injection rigidity, carbon dioxide recover the oil
It is with reference to implementation order in order：
The first step, implementation nitrogen filling foam water blockoff, and the synchronization implementation control aqua during nitrogen filling foam water blockoff is implemented
Control water；
Second step, the nitrogen injection rigidity displacement of reservoir oil of implementation first time；
3rd step, implementation carbon dioxide recover the oil；
4th step, second nitrogen injection rigidity displacement of reservoir oil of implementation.
Yet further, the nitrogen that the first time nitrogen injection rigidity displacement of reservoir oil and second nitrogen injection rigidity displacement of reservoir oil are injected
Amount is identical.
First aspect, it is contemplated that water outlet oil reservoir has huge water outlet risk oil reservoir typically with water outlet main channel, needs to use
Nitrogen filling foam water blockoff forms high intensity nitrogen bubble foam layer, meets water stabilization using nitrogen foam but the unstable characteristic of chance oil is blocked
Water body invade oil reservoir main channel, prevent oil well in oil recovery process water body again along invade main channel enter oil reservoir and oil well
It is interior.
Second aspect, it is contemplated that oil reservoir has the seepage channel of oil-water coexistence, with oil reservoir development in recovery process
Carry out, when water body cannot invade oil reservoir from the water outlet main channel for being blocked, oil reservoir can be entered by oil-water coexistence passage, need to adopt
The crane span structure barrier bed that oil blocks water is set up in oil-water coexistence passage with control aqua control water, in case water-stop body cannot break through main leading to
Oil reservoir is invaded again along oil-water coexistence passage during road barrier bed.
The third aspect, it is contemplated that huge water body is invaded and profit gravitational differentiation effect, as water body invades oil reservoir, especially
Natural bottom water coning causes oil-water interfaces to rise, underground crude oil can due to oil-water interfaces rise be stranded in oil reservoir high-order bit so as to
Oil well cannot be flowed into, need to be using nitrogen injection rigidity displacement of reservoir oil manufacture of intraocular nitrogen pneumatic jack above high-order bit oil body, using nitrogen
Rigid displacement effect is low by oil-water fluid face pressure and the crude oil of high-order bit is pushed into back into lower curtate position, realizes invading what is produced due to water body
The effective of high-order bit remaining oil employs.
Fourth aspect, it is contemplated that current degree is more than crude oil mobility during oil-water two-phase flow in general aqueous oil reservoir, needs to use
Carbon dioxide recovers the oil, and is dissolved in viscosity reduction after crude oil using carbon dioxide, increases the principles such as dissolved gas drive energy, miscible-phase displacement and increase former
The underground fluid ability of oil, puies forward the relative penetrating power and oil and water mobility ratio of oil phase in high water-cut reservoir, so as to realize to profit
Employed with layer or by the effective of remaining oil in the oil reservoir of water body intrusion.
Compared with prior art, the invention has the advantages that：
Nitrogen filling foam water blockoff and control aqua control water are combined, and can simultaneously realize to aqueous oil reservoir or there is huge water outlet
The water blockoff and deep layer control water of main water enchroachment (invasion) passage and oil-water coexistence passage in the oil reservoir of risk, while not influenceing oil-water coexistence passage
The proper flow of Crude Oil；Recovered the oil with reference to nitrogen injection rigidity displacement and carbon dioxide, be capable of achieving to high-order bit remaining oil and by
Remaining oil employs comprehensively in the oil reservoir that water body is invaded.Realized to wet oil present invention can be implemented in while effective water blockoff control water
Hide efficiently employing for different parts crude oil.
Brief description of the drawings
Fig. 1 is implementing procedure of the present invention.
Fig. 2 is construction ground flow of the present invention.
Fig. 3 is present invention construction infusion process mode.
Fig. 4 is 5 mouthfuls of northwest TH oil fields well control water gas-injection oil-production integration measure nitrogen foam measure consumption.
Fig. 5 is 5 mouthfuls of northwest TH oil fields well control water gas-injection oil-production integration measure control aqua measure consumption.
Fig. 6 is 5 mouthfuls of northwest TH oil fields well control water gas-injection oil-production integration measure nitrogen measure consumption.
Fig. 7 is 5 mouthfuls of northwest TH oil fields well control water gas-injection oil-production integration measure liquid carbon dioxide measure consumption.
Fig. 8 is individual well daily oil production contrast before and after the well control water gas-injection oil-production integration measure of 5 mouthfuls of northwest TH oil fields.
Fig. 9 is individual well moisture content contrast before and after the well control water gas-injection oil-production integration measure of 5 mouthfuls of northwest TH oil fields.
Figure 10 is individual well daily oil production contrast before and after the well control water gas-injection oil-production integration measure of 8 mouthfuls of North China JD oil fields.
Figure 11 is individual well moisture content contrast before and after the well control water gas-injection oil-production integration measure of 8 mouthfuls of North China JD oil fields.
Specific embodiment
With reference to embodiment and accompanying drawing, the invention will be further described, and embodiments of the present invention are included but is not limited to
The following example.
Embodiment
As shown in figs. 1-11, control water gas-injection oil-production integration method for increasing, is that one kind is applied to High water cut or exists huge
Water production control amount and the method for increasing of oil production is improved during water outlet risk oil reservoir development.The method is by control water gas-injection oil-production
Integrated programme is designed, injection material prepares, ground flow connection is constructed with preparation, infusion, return discharge spray test operation five
Step is constituted, as shown in Figure 1.
(1) control water gas-injection oil-production integrated programme design：Based on reservoir geologic character, Oil Reservoir Types, production history and oil
The analyses such as water distribution, it is determined that the scope of construction item and infusion program option of control water gas-injection oil-production engineering proposal, under flow
One step；
(2) injection material prepares：All kinds of injection materials are prepared according to identified scope of construction item in (1), is made for scene
Standby nitrogen need to prepare the equipment with corresponding preparative capacibility, for the material prepared before construction, including used by generation nitrogen foam
Glue and additive, control aqua, liquid carbon dioxide and carbon dioxide drag reducer, isolation anti-icing fluid and replacement it is active
Water, 1.1 times of general preliminary design consumption；
(3) ground flow connection and preparation：Ground installation and pipeline are attached according to shown in Fig. 2, and check connection
Whether mode is correct, and whether interface is tight, and the interface in the surface line flow at liquid carbon dioxide infusion end is utilized
Stop-leak compound is sealed, and prevents from causing liquid carbon dioxide to give a tongue-lashing leakage in work progress, treats that surface line and equipment connection confirm
Pressure testing is carried out after correct, after pressure testing is qualified, into flow next step；
(4) infusion construction：Infusion is carried out according to infusion program, real-time monitoring Dynamic Construction parameter, ensure that pressure break infusion is applied
Work is carried out safely, successfully, if occurring the too high situation of operation pressure in work progress, needs to consider to reduce operational discharge capacity as one sees fit,
After infusion is performed and terminated, need termination of pumping closing well 2-3 days, give subterranean carbon dioxide fully spread in underground, the dissolving in crude oil
Time, Specific construction infusion process mode is as shown in Figure 3；
(5) discharge spray test is returned to go into operation：Dismounting pressure break surface line, removes injection construction equipment, dismantles fracture well head, changes
With christmas tree, and the row of returning after having the small open flow to big, strict control to return row's system control pressure, prevent during the row of returning due to
Carbon dioxide gasification acutely causes to damage pit shaft.
Above-mentioned steps (1) are specifically included：
A1, determine that reservoir physical property is special according to data such as reservoir geologic character, Oil Reservoir Types, production history and oil and water zonations
Levy, oil reservoir earial drainage volume, water body invade volume, reservoir temperature, pressure, oil-water interfaces；
A2, according to water body invade situation and well water situation design injection nitrogen foam volume and control aqua consumption；
A3, according to oil reservoir earial drainage volume, oil-water interfaces, reservoir temperature and pressure design nitrogen injection rigidity the displacement stage needed for
Nitrogen injection rate；
A4, liquid carbon dioxide consumption is formulated according to remaining oil distribution situation and reservoir temperature, pressure；
A5, according to structure of oil well design injection operating tool string structure, and according to tubing string volume design replacement active water and
Anti-icing fluid consumption is used in isolation；
A6, all kinds of injection material scale design infusion program options according to designed by a2-a5；
A7, the injection operating tool string structure according to designed by a5, the infusion program option designed by a6, with reference to reservoir geology
Analysis of data predicts operation pressure.
Above-mentioned steps (4) are specifically included：
D1, carried out according to infusion programming nitrogen foam injection construction, nitrogen is carried out by nitrogen infusion ground flow
Injection, while carry out glue injection by liquid end infusion ground flow, while carry out, nitrogen and glue are to well head for two ends injection
It is preceding to enter well after threeway mixes；
D2, in the nitrogen filling foam stage, according to infusion programming input control aqua, the injection of control aqua is from liquid end infusion ground
Fracturing blender truck in surface current journey is delivered, and is injected with slug formula, and single input is no more than 2000kg in principle；
D3, closing liquid end infusion ground flow, opening nitrogen infusion ground flow carries out a nitrogen injection construction, nitrogen injection
Measure to design the 1/2 of nitrogen injection total amount, strict monitoring nitrogen injection pressure in injection process, if nitrogen injection hypertonia, drops as one sees fit
Low nitrogen injection discharge capacity；
After d4, a nitrogen injection construction terminate, nitrogen infusion ground flow is closed, open liquid end infusion ground flow, entered
Row isolation is constructed with anti-icing fluid infusion；
After d5, the infusion construction of isolation anti-icing fluid terminate, liquid end infusion ground flow is closed, open carbon dioxide infusion ground
Flow, carries out liquid carbon dioxide infusion construction, disposably finishes design liquid carbon dioxide amount whole infusion；
After d6, liquid CO 2 infusion terminate, carbon dioxide injection ground flow is closed, open liquid end infusion surface flow
Journey, carries out the construction of isolation anti-icing fluid infusion；
D7, closing liquid end infusion ground flow, opening nitrogen infusion ground flow carries out secondary nitrogen injection construction, nitrogen injection
Measure to design the 1/2 of nitrogen injection total amount, strict monitoring nitrogen injection pressure in injection process, if nitrogen injection hypertonia, drops as one sees fit
Low nitrogen injection discharge capacity；
After d8, the construction of secondary nitrogen injection terminate, nitrogen infusion ground flow is closed, open liquid end infusion ground flow, entered
Row replacement is constructed with active water infusion, disposably finishes the active water whole infusion of design, and infusion construction terminates；
After d9, infusion terminate, closing well 2-3 days, pressure after record closing well.
Effect assessment
Scene application example 1 of the invention
In northwest China TH oil fields, fractured-porous reservoir type 5 mouthfuls of wells of Production From A Massive Carbonate Reservoirs With Bottom Water implement the inventive method, complete
Well well depth 5693.0-6666.0m.Implement preceding 5 mouthfuls of wells using the inventive method and enter Water-cut Period：It is single before the technology of the present invention measure
Well daily output liquid 18.17-66.25m3, average 38.45m3, 3.56-10.01 tons of oil-producing of individual well day, average 6.04 tons, individual well daily output water
12.3-52.9m3, average 30.4m3, individual well moisture content 67.7%-84.4%, average 77.9%.
Using control water gas-injection oil-production integration method for increasing, individual well nitrogen foam consumption 800-1050m3, average 950m3, individual well
Control aqua consumption 8000-15000kg, average 11200kg, individual well nitrogen injecting quantity 193800-198000m3, average 237240m3；It is single
Well fluid injection state amount of carbon dioxide 900-1000m3, average 960m3.Individual well average material measure consumption is as shown in figs. 4-7.
Individual well daily output liquid 35.72-87.57m after the inventive method measure3, average 51.13m3, individual well day oil-producing 18.24-
48.50 tons, average 29.48 tons, individual well daily output water 8.5-20.9m3, average 11.8m3, individual well moisture content 19.3%-31.9%, put down
Equal 23.2%.
4.1-5.5 times of oil output per well amplification, average individual well increases 4.9 times of oil, and individual well moisture content declines 46.6%-
62.0%, average individual well moisture content declines 54.6%.Daily oil production contrast is as shown in figure 8, moisture content is contrasted before and after single well measure
As shown in Figure 9.
Scene application example 2 of the invention
In East China JD oil fields, first batch of 8 mouthfuls of test wells carry out application effect statistics, single before the technology of the present invention measure
Well day 0-3.22 tons of oil-producing, average 1.49 tons, individual well moisture content 81.5%-100%, average 95.3%.Adopted using control water gas injection
Oily integration yield-increasing technology, 3.91-10.50 tons of oil-producing of individual well day, average 6.68 tons, individual well moisture content 24.4%- after measure
62.8%, average 48.3%.The accumulation of individual well stage increases 192-553 tons of oil, and average individual well stage accumulation increases oil 370.38t, individual well
Water 582-19964m is produced in stage accumulation less3, the accumulation of average individual well stage produces water 6021.88m less3.Stage individual well increases oily multiple
2.09-4.92, average 3.53 times, stage individual well moisture content range of decrease 32.0-70.9%, the average moisture content range of decrease 48.7%.First batch of 8
Daily oil production contrast is as shown in Figure 10 before and after mouth test well application the technology of the present invention, and moisture content is to such as Figure 11 institutes before and after measure
Show.
In East China JD oil fields accumulative application the technology of the present invention 67 mouthfuls of wells of work of multiple block, construction success rate
100%, measure effective percentage 95.2%, the stage increases oil 153800t, and comprehensive water cut drops to 61.4%, water is produced less by 95.3%
1322828m3。
According to above-described embodiment, the present invention just can be well realized.What deserves to be explained is, before said structure design
Put, to solve same technical problem, even if some made in the present invention are used without substantial change or polishing
Technical scheme essence still as the present invention, therefore it should also be as within the scope of the present invention.
Claims (5)
1. water gas-injection oil-production integration method for increasing is controlled, it is characterised in that including nitrogen filling foam water blockoff, control aqua control water, note
The displacement of reservoir oil of nitrogen rigidity, carbon dioxide oil recovery and the orderly combination of above-mentioned each individual event step.
2. it is according to claim 1 to control water gas-injection oil-production integration method for increasing, it is characterised in that the nitrogen filling foam
Water blockoff forms nitrogen foam system using nitrogen is prepared in situ with the form of glue mixed water injection.
3. it is according to claim 1 to control water gas-injection oil-production integration method for increasing, it is characterised in that the control aqua control water
Implemented while nitrogen filling foam water blockoff is implemented using the control aqua with saturating oily water stop function.
4. it is according to claim 1 to control water gas-injection oil-production integration method for increasing, it is characterised in that the nitrogen filling foam
Water blockoff, control aqua control water, the displacement of reservoir oil of nitrogen injection rigidity, carbon dioxide recover the oil and are with reference to implementation order in order：
The first step, implementation nitrogen filling foam water blockoff, and the synchronization implementation control aqua control water during nitrogen filling foam water blockoff is implemented；
Second step, the nitrogen injection rigidity displacement of reservoir oil of implementation first time；
3rd step, implementation carbon dioxide recover the oil；
4th step, second nitrogen injection rigidity displacement of reservoir oil of implementation.
5. it is according to claim 4 to control water gas-injection oil-production integration method for increasing, it is characterised in that the first time notes nitrogen
The gas rigidity displacement of reservoir oil is identical with the nitrogen amount that second nitrogen injection rigidity displacement of reservoir oil is injected.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005382A (en) * | 2019-04-16 | 2019-07-12 | 西南石油大学 | A kind of coal seam liquid state CO2Fracturing technology method is cooperateed with active water |
| CN110318721A (en) * | 2019-08-15 | 2019-10-11 | 中国石油大学(华东) | A kind of method that fault block oil reservoir foam flooding auxiliary nitrogen soak improves recovery ratio |
| CN111577224A (en) * | 2019-02-19 | 2020-08-25 | 中国石油化工股份有限公司 | Method for improving bottom water gas reservoir recovery ratio by controlling water with carbon dioxide in horizontal well |
| CN114215492A (en) * | 2021-12-16 | 2022-03-22 | 山东省煤田地质局第三勘探队 | Water stopping device for layered water pumping of hydrogeology drilling |
| CN114482946A (en) * | 2020-11-12 | 2022-05-13 | 中国石油天然气股份有限公司 | Method and device for removing blockage of stratum, storage medium and computer equipment |
| CN115163027A (en) * | 2021-04-02 | 2022-10-11 | 中国石油化工股份有限公司 | Method for treating water coning or ridge entering at bottom of oil well |
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| CN202788787U (en) * | 2012-07-16 | 2013-03-13 | 中国石油天然气股份有限公司 | Nitrogen foam gel profile control process pipe column |
| CN205532549U (en) * | 2016-02-01 | 2016-08-31 | 河北易压得石油科技有限公司 | Moisture oil reservoir of crowning accuse water increases oil pressure and splits structure |
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| CN111577224B (en) * | 2019-02-19 | 2022-07-08 | 中国石油化工股份有限公司 | Method for improving bottom water gas reservoir recovery ratio by controlling water with carbon dioxide in horizontal well |
| CN110005382A (en) * | 2019-04-16 | 2019-07-12 | 西南石油大学 | A kind of coal seam liquid state CO2Fracturing technology method is cooperateed with active water |
| CN110005382B (en) * | 2019-04-16 | 2021-08-06 | 西南石油大学 | Coal bed gas liquid CO2Fracturing process method cooperated with active water |
| CN110318721A (en) * | 2019-08-15 | 2019-10-11 | 中国石油大学(华东) | A kind of method that fault block oil reservoir foam flooding auxiliary nitrogen soak improves recovery ratio |
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| CN115163027A (en) * | 2021-04-02 | 2022-10-11 | 中国石油化工股份有限公司 | Method for treating water coning or ridge entering at bottom of oil well |
| CN114215492A (en) * | 2021-12-16 | 2022-03-22 | 山东省煤田地质局第三勘探队 | Water stopping device for layered water pumping of hydrogeology drilling |
| CN114215492B (en) * | 2021-12-16 | 2023-11-17 | 山东省煤田地质局第三勘探队 | Water stopping device for hydrogeology drilling layered water pumping |
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