CN106761638A - The fireflood of high dip angle heavy crude reservoir is driven with flue gas re-injection gravity and cooperates with recovery method - Google Patents
The fireflood of high dip angle heavy crude reservoir is driven with flue gas re-injection gravity and cooperates with recovery method Download PDFInfo
- Publication number
- CN106761638A CN106761638A CN201611158240.XA CN201611158240A CN106761638A CN 106761638 A CN106761638 A CN 106761638A CN 201611158240 A CN201611158240 A CN 201611158240A CN 106761638 A CN106761638 A CN 106761638A
- Authority
- CN
- China
- Prior art keywords
- fireflood
- gas
- well
- flue gas
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/2406—Steam assisted gravity drainage [SAGD]
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/30—Specific pattern of wells, e.g. optimizing the spacing of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/40—Separation associated with re-injection of separated materials
Abstract
The present invention provides a kind of fireflood of high dip angle heavy crude reservoir and cooperates with recovery method with the drive of flue gas re-injection gravity.The recovery method includes：Production block is chosen, fireflood is disposed respectively and is linearly driven well pattern and flue gas re-injection gravity drive well pattern with top in the middle part of the oil reservoir of production block；Ground installation and transportation pipe line are installed；Injected from fireflood gas injection well to oil reservoir and air and lighted a fire, the deep fat for producing that will burn is produced with flue gas via fireflood producing well, by flue gas separating and filtering after, be recycled into flue gas gas injection well, produced via gas drive producing well and recovered the oil.It is uneven that the recovery method can avoid live wire caused by single fireflood from advancing, employ area it is small the drawbacks of, increase oil reservoir employs area；Fireflood is driven synergy and can improve oil recovery with flue gas re-injection gravity；The flue gas that fireflood simultaneously is produced can provide the source of the gas of stabilization for crestal gas injection, and the re-injection of flue gas can reduce the discharge of tail gas, reduce running cost, reduce air pollution, environmental protection.
Description
Technical field
The invention belongs to oil reservoir production technique field, it is related to a kind of fireflood of high dip angle heavy crude reservoir and flue gas re-injection gravity
Drive collaboration recovery method.
Background technology
Viscous crude is often referred under formation condition viscosity more than 50mPas, crude oil of the relative density more than 0.920.The country has been visited
Bright heavy oil reserves account for the 25-30% of domestic total petroleum reserves up to 1,300,000,000 tons.Viscous crude is because its density is big, viscosity is high, mobility
Difference, so conventional waterflooding behavior method development effectiveness is poor, fireflood technology have become raising thick oil recovery ratio main method it
One.For high dip angle heavy crude reservoir, two kinds of fireflood sides are linearly generally driven using the linear drive in oil reservoir top and oil reservoir rich oil area middle part
Formula.Using top, linearly the mode of driving is developed, and during from structural high part to lower location of the structure air injection, the air of injection can be to construction
High-order bit is migrated, and makes substantial amounts of air flow burned region domain, causes the waste of air.With burned region gradually expansion, it is necessary to
Air injection speed also to increase therewith, improve constantly running cost.Meanwhile, oil reservoir lower curtate position is relatively slow by effect, development efficiency
It is not high.And developed using the linear drive mode in oil reservoir rich oil area middle part, inject air from the middle position in rich oil area, at the same to top and
Bottom displacement, can cause live wire to advance uneven, cause to be taken effect preferably to bottom, and poor to taking effect for top, oil reservoir it is whole
Body development degree is low, and development effectiveness is not ideal enough.
The content of the invention
Based on above-mentioned technical problem, it is an object of the invention to provide a kind of fireflood of high dip angle heavy crude reservoir and cigarette
Gas re-injection gravity in road drives collaboration displacement recovery method, by increasing capacitance it is possible to increase oil reservoir integrally employs area, makes on the construction of high dip angle oil reservoir
Portion develops simultaneously with bottom, improves exploitation rate.
The purpose of the present invention is achieved by the following technical programs：
The present invention provides a kind of fireflood of high dip angle heavy crude reservoir and cooperates with recovery method with the drive of flue gas re-injection gravity, and it includes
Following steps：
Choose production block；
Fireflood is disposed in the middle part of the oil reservoir of production block and linearly drives well pattern；
Flue gas re-injection gravity is disposed at the top of the oil reservoir of production block and drives well pattern；
Ground installation and transportation pipe line are installed；The ground installation includes flue gas gas-liquid separation device and gas mistake
Filter device；Described gas-liquid separation device, gas-filtering device are this area routine separating and filtering device.
Linearly driven to fireflood and inject in the fireflood gas injection well in well pattern air and light a fire, the fireflood of stabilization is formed in oil reservoir
Leading edge, persistently injects air and keeps fireflood leading edge to push ahead steadily, and the deep fat for producing that will burn is with flue gas via fireflood line
Property drive well pattern in fireflood producing well extraction, by flue gas by conveyance conduit via flue gas gas-liquid separation device, gas mistake
After filter device carries out separating and filtering, it is recycled into the flue gas gas injection well during flue gas re-injection gravity drives well pattern, is noted through flue gas
Gas well is recycled into stratum, and the gas drive producing well then driven via flue gas re-injection gravity in well pattern produces oil recovery.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, " is formed in oil reservoir
The fireflood leading edge of stabilization, persistently injects air and keeps fireflood leading edge to push ahead steadily " for fireflood igniting in this area carries out fireflood
Routine operation.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that production district
The selection of block need to meet following reservoir condition：Oil reservoir inclination angle >=10 °, core intersection>2m, reservoir permeability>10×10-3μm2,
Viscosity of crude is 50mPas-50000mPas, oil saturation>30%.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that
The fireflood linearly drives well pattern including at least row's fireflood gas injection well and row's fireflood producing well (for example, implementing
It is a line fireflood producing well in example), direction (direction of well row) and the oil reservoir incline direction of fireflood gas injection well and fireflood producing well
Vertically, fireflood gas injection well is located at high-order bit, and fireflood producing well is located at lower curtate position, and fireflood leading edge is advanced from high-order bit to lower curtate position.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that fireflood is noted
Row's spacing between gas well and fireflood producing well is 50-150m.
The flue gas re-injection gravity drives well pattern includes at least a bite flue gas gas injection well and at least a bite gas drive producing well
(for example, being a line gas drive producing well in embodiment), gas drive producing well is distributed in around flue gas gas injection well；Flue gas gas injection
The direction (direction of well row) of well and gas drive producing well is vertical with oil reservoir incline direction, and flue gas gas injection well is located at high-order bit, gas
Drive producing well and be located at lower curtate position.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that flue gas
Row's spacing between gas injection well and gas drive producing well is 50-150m.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, is existed to describe oil reservoir
The vertical position of underground, the oil reservoir middle part height above sea level for defining oil reservoir is vertical range of the oil reservoir medium position on sea level.Such as
Under sea level, then the value is negative to fruit oil reservoir." high-order bit " that the present invention is previously mentioned refers to the big oil of the value of oil reservoir middle part height above sea level
Position is hidden, " lower curtate position " refers to the small oil reservoir position of the value of oil reservoir middle part height above sea level.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that describedly
Face facility also includes additional mechanical supercharging device.There is certain pressure, and the pressure in itself from the flue gas of oil reservoir lower curtate position output
It is general higher than top of oil horizon pressure, can naturally be recycled into top of oil horizon without compression.But sometimes due to well skin factor and
The influence of the factors such as injectability, it may be necessary to be pressurized by a small margin.After being pressurized using additional mechanical supercharging equipment, warp
Pipelined is recycled into stratum to oil reservoir top through noting flue gas well.The additional mechanical supercharging device is this area routinely supercharging dress
Put.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that
When live wire burns to fireflood producing well in fireflood gas injection well, fireflood gas injection well is closed, fireflood producing well is changed to
Gas injection well, and in its lower curtate position deployment two wires fireflood producing well, the deep fat for producing that burns is with flue gas in the lump via two wires fireflood
Producing well production extraction, promoting the circulation of qi is entered by flue gas by conveyance conduit via flue gas gas-liquid separation device, gas-filtering device
After liquid is separated and filtered, it is recycled into the flue gas gas injection well at the top of oil reservoir, is then produced via gas drive producing well and recovered the oil, successively
Analogizing is carried out.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that the fire per line
Row's spacing between drive producing well is adjacent is 50-150m；In every line fireflood producing well, the well spacing between fireflood producing well is adjacent
It is 50-150m.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, is to be with the second line
Example, in fact, when live wire burns to fireflood producing well in fireflood gas injection well, closing fireflood gas injection well, fireflood producing well is changed
It is gas injection well, and in the fireflood producing well of its lower curtate position deployment two wires fireflood producing well, or two wires, three lines and the above,
These producing wells can be exploited simultaneously, when can also be different.It is also such that following flue gas re-injection gravity drives.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, often arranges fireflood gas injection well
Depending on the quantity foundation oil field actual conditions of every row's fireflood producing well.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that
After flue gas after filtering is recycled into the flue gas gas injection well at the top of oil reservoir, with the injection of flue gas, stratum
In flue gas can the propulsion of peripherad gas drive producing well, when a large amount of flue gases of output in gas drive producing well, gas drive is produced
Well is closed or gas drive producing well is changed into flue gas gas injection well, and two wires gas drive producing well is disposed around it carries out production and adopt
Oil, the like carry out.Should be tried one's best in operation makes the flue gas of injection be trapped in oil reservoir, should not produce again.If having a small amount of
Flue gas is plucked out of again, and re-injection pipeline is imported into after should being isolated, and re-injects into stratum, it is to avoid discharged in air.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that per line gas
Row's spacing between drive producing well is adjacent is 50-150m；In every line gas drive producing well, the well spacing between gas drive producing well is adjacent
It is 50-150m.
The fireflood of above-mentioned high dip angle heavy crude reservoir and flue gas re-injection gravity are driven in cooperate with recovery method, flue gas gas injection well with
The flue that the quantity of the specific well of gas drive producing well is produced according to oil reservoir actual conditions, the gas injection ability of individual well and expected fireflood
Depending on tolerance.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that the cigarette
The type that gas re-injection gravity in road drives well pattern can include areal well pattern, row well pattern or skewed pattern；
It is further preferred that the areal well pattern can include Five-point method pattern, anti-seven-spat pattern or 9 method well patterns.
The fireflood of above-mentioned high dip angle heavy crude reservoir and flue gas re-injection gravity are driven in cooperate with recovery method, it is preferable that fireflood and
Flue gas re-injection gravity drives and can develop simultaneously.
The fireflood of above-mentioned high dip angle heavy crude reservoir is cooperateed with recovery method with the drive of flue gas re-injection gravity, it is preferable that fireflood
The reservoir layer position that reservoir layer position and flue gas re-injection gravity drive may be located at same layer position or different layers position.
High dip angle heavy crude reservoir middle part fireflood of the invention is driven with top flue gas re-injection gravity and cooperates with displacement recovery method
The original reservoir can be applied to, it is also possible to suitable for the oil reservoir in steam injection development later stage.
In the present invention, viscous crude is often referred under formation condition viscosity more than 50mPas, original of the relative density more than 0.920
Oil；High dip angle oil reservoir typically refers to oil reservoir of the stratigraphic dip more than 10 °；Fireflood refers to the abbreviation of combustion in situ oil production method, is led to
Cross gas injection well to be continuously injected into air to stratum and light oil reservoir, burning in layer is realized, so as to in-place oil be pushed to from gas injection well
The oil production method of producing well；It refers to the flue gas re-injection that will be discharged during oil reservoir middle part fireflood that flue gas re-injection gravity in top drives
To in the stratum of oil reservoir top, artificial gas cap is formed, forming stabilization gravity using the gravity difference between gas and crude oil drives.
The main oil production machine for cooperateing with recovery method is driven in high dip angle heavy crude reservoir of the invention fireflood with flue gas re-injection gravity
Reason is as follows：
(1) the recovery method moderate heat oil flooding method is along with complicated heat transfer, mass transport process and physicochemical change,
With various withdrawal mechanisms.Fireflood is continuously injected into air by gas injection well to stratum, and lights oil reservoir, forms live wire.Before live wire
Side crude oil be heated viscosity reduction, distillation, light oil, vapour and combustion product gases after distillation be driven to front, leave the weight not being distilled
Matter component produces cracking, decomposes at high temperature, and last remaining pyrolysis product-coke maintains oil as the fuel of combustion in situ
Layer continues to burn forward；At high temperature, oil-reservoir water (including irreducible water), injection water and burning generation water, become steam, carry big
The heat transfer of amount gives front oil reservoir, and scrubs Crude Oil again, and crude oil is finally driven onto producing well.So just in subterranean oil
A various driving mechanisms and the complex process deposited, various mechanism collective effects are formed in layer.
(2) there is the recovery method moderate heat oil flooding method hot water flooding, steam to drive and the various withdrawal mechanisms of flue gas flooding.
(3) in the recovery method top injection flue gas gravity oil flooding method have solubilising, viscosity reduction, intensifying distillation and
Expand the effect such as swept volume.
(4) flue gas usually contains 80%- during top injection flue gas gravity drives oil recovery process in the recovery method
85% nitrogen and the carbon dioxide of 15%-20% and a small amount of impurity.The chemical composition of flue gas is not fixed, and its property is main
Depending on the shared ratio in flue gas of nitrogen and carbon dioxide, the mechanism of oil displacement with carbon dioxide flooding and nitrogen flooding.
(5) nitrogen be able to can not enter into water in the injection flue gas gravity oil flooding method of top in the recovery method
Hyposmosis interval, it is possible to decrease permeable belt be in bound state mother oil displacement turn into flowable crude oil.
(6) after nitrogen is injected into oil reservoir in the injection flue gas gravity oil flooding method of top in the recovery method, can be
Constraint gas saturation is formed in oil reservoir, so that water saturation and water phase permeability reduction, improve follow-up to a certain extent
The swept volume of water drive.
(7) nitrogen is water insoluble in the injection flue gas gravity oil flooding method of top in the recovery method, is slightly soluble in oil,
Microbubble can be formed, emulsion is formed with profit, reduce Crude viscosity, improve recovery ratio.
Prominent effect of the invention is：
The high dip angle viscous crude oil fireflood that the present invention is provided is driven with flue gas re-injection gravity and cooperates with recovery method, exploitation effect
Good, exploitation rate is high, the live wire caused by single fireflood can be avoided to advance uneven, employ area it is small the drawbacks of, increase oil
Hide entirety and employ area；The crude oil that fireflood can effectively reduce involved stratum with flue gas re-injection gravity drive synergy glues
Degree, supplements stratum energy, increases single well productivity and improves oil recovery；The flue gas that fireflood simultaneously is produced can be noted for top
For stable source of the gas, the re-injection of flue gas can reduce the discharge of tail gas to air lift, reduce running cost, reduce air pollution, protect
Retaining ring border.
Brief description of the drawings
Fig. 1 is that the fireflood of high dip angle heavy crude reservoir and flue gas re-injection gravity drive to cooperate with and exploits flow in the embodiment of the present invention
Figure；
Fig. 2 be the embodiment of the present invention in fireflood linearly drive well pattern schematic diagram；
Fig. 3 is flue gas re-injection gravity drive five-spot pattern schematic diagram in the embodiment of the present invention；
Fig. 4 is that the fireflood of high dip angle heavy crude reservoir and flue gas re-injection gravity drive to cooperate with and exploits bulk flow in the embodiment of the present invention
Journey schematic diagram.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and beneficial effect, now to skill of the invention
Art scheme carry out it is described further below, but it is not intended that to it is of the invention can practical range restriction.
Embodiment
The present embodiment provides a kind of fireflood of high dip angle heavy crude reservoir and cooperates with recovery method, flow with the drive of flue gas re-injection gravity
Figure is as shown in figure 1, it is comprised the following steps：
(1) production block is chosen, the reservoir condition of the production block is：Oil reservoir inclination angle is 30 °, and core intersection is 15m, oil
Layer permeability is 580 × 10-3μm2, viscosity of crude is 250mPas-300mPas, initial oil saturation under reservoir condition
It is 70%.
(2) fireflood is disposed in the middle part of the oil reservoir of production block and linearly drives well pattern, well pattern is linearly driven in the fireflood includes one
Row's fireflood gas injection well and row's fireflood producing well (being a line fireflood producing well)；Often the quantity of row's well is 5 mouthfuls.As shown in Fig. 2 fiery
It is 100m to drive the row's spacing between gas injection well and a line fireflood producing well, per in line fireflood producing well, fireflood producing well it is adjacent it
Between well spacing be 100m, fireflood gas injection well be located at high-order bit, a line fireflood producing well be located at lower curtate position.
(3) flue gas re-injection gravity is disposed at the top of the oil reservoir of production block and drives well pattern, the flue gas re-injection gravity drives
Well pattern includes that a bite flue gas gas injection well and four implications disposed around it drive producing well (being a line gas drive producing well), portion
Administration takes Five-point method pattern (as shown in Figure 3), four mouthfuls of wells to constitute square corner, and flue gas gas injection well is located at square center,
Row's spacing between gas drive producing well and flue gas gas injection well is 150m, and the well spacing between drive producing well is adjacent per implication is
150m；The direction of flue gas gas injection well and gas drive producing well is vertical with oil reservoir incline direction, and flue gas gas injection well is located at high-order bit,
Gas drive producing well is located at lower curtate position.
(4) flue gas gas-liquid separation device, gas-filtering device and additional mechanical supercharging device, fireflood producing well, flue are installed
Gas gas-liquid separation device, gas-filtering device pass sequentially through conveyance conduit and are connected with flue gas gas injection well.
(5) air is injected from fireflood gas injection well to oil reservoir, electricity consumption sparking mode lights oil reservoir, stabilization is formed in oil reservoir
Fireflood leading edge, and continue injection air and keep fireflood leading edge to push ahead steadily, the deep fat and the flue gas that produce of burning via
One line fireflood producing well is produced, and is above returned to ground, then by flue gas by conveyance conduit via flue gas gas-liquid separation device,
After gas-filtering device carries out gas-liquid separation and filtering, after being pressurized using additional mechanical supercharging device, through pipelined to oil reservoir
In the flue gas gas injection well at top, stratum is recycled into through flue gas gas injection well, is then recovered the oil (as schemed via the production of gas drive producing well
Shown in 4).
The gas injection speed of initial stage fireflood gas injection well is 3000Nm3/ d, it is 1000Nm that individual well month increases gas injection speed3/ d, until single
Well gas injection speed reaches 20000Nm3/ d, is not further added by afterwards.Can be produced according to dynamic monitoring information and oil well in implementation process
Amount is adjusted correspondingly.When live wire is burned to downwards a line producing well in oil reservoir, fireflood gas injection well is closed, by a line fireflood
Producing well is changed to gas injection well, and in its lower curtate position deployment two wires fireflood producing well, the deep fat that produces and the flue gas of burning and via
The production extraction of two wires fireflood producing well, promoting the circulation of qi is entered by conveyance conduit via flue gas gas-liquid separation device, gas-filtering device
After liquid is separated and filtered, in the flue gas gas injection well that the flue gas after filtering is recycled at the top of oil reservoir, then given birth to via gas drive
Well production is produced to recover the oil, the like, three line fireflood producing wells are disposed, the row's spacing between every line fireflood producing well is adjacent is
The height of 100m, two wires fireflood producing well and three line fireflood producing well positions successively decreases (as shown in Figure 2) successively.
After flue gas after filtering is recycled into the flue gas gas injection well at the top of oil reservoir, with the injection of flue gas, stratum
In flue gas can the propulsion of peripherad gas drive producing well, when a large amount of flue gases of output in gas drive producing well, gas drive is produced
Well is changed to flue gas gas injection well, and deployment two wires gas drive producing well carries out production oil recovery around it, the like, per line gas drive
Row's spacing between producing well is adjacent is 150m.
, by the production of 5 years, the annual effective gas injection time average out to of gas injection well 330 days is (because the original such as well workover for the case
Because needing temporary shut-down (TSD)), 5 mouthfuls of accumulative injection air 1.65 × 10 of gas injection well8Nm3；One line, two wires, three line fireflood producing wells add up
Oil-producing 8 × 104t.According to bottom hole temperature (BHT) monitoring result, combustion front has arrived at a line fireflood producing well, now closes original
Gas injection well, by a line producing well switch to gas injection well injection air.This stage accumulative extraction flue gas 1.4 × 108Nm3, these cigarettes
The flue gas re-injection gravity that road gas all re-injects into top by ground flow carries out top flue gas flooding, warp in driving well pattern
The accumulative extraction crude oil 3.2 × 10 of flue gas gas drive producing well4t.In traditional fireflood technology, the flue gas of extraction is simply located
It is discharged into air after reason, and the present invention carries out the top displacement of reservoir oil using the flue gas of extraction, not only avoids environmental pollution, also adopts
Extra crude oil is gone out.
The high dip angle heavy crude reservoir fireflood that the present invention is provided in sum is driven with flue gas re-injection gravity and cooperates with recovery method,
Exploitation effect is good, exploitation rate is high, the live wire caused by single fireflood can be avoided to advance uneven, employs the small disadvantage of area
End, increase oil reservoir integrally employs area；Fireflood is driven synergy and can effectively reduce involved stratum with flue gas re-injection gravity
Viscosity of crude, supplement stratum energy, increase single well productivity and improve oil recovery；The flue gas that fireflood simultaneously is produced can
The source of the gas of stabilization is provided for crestal gas injection, the re-injection of flue gas can reduce the discharge of tail gas, reduce running cost, reduce air
Pollution, environmental protection.
Claims (10)
1. a kind of high dip angle heavy crude reservoir fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, and it is comprised the following steps：
Choose production block；
Fireflood is disposed in the middle part of the oil reservoir of production block and linearly drives well pattern；
Flue gas re-injection gravity is disposed at the top of the oil reservoir of production block and drives well pattern；
Ground installation and transportation pipe line are installed；The ground installation includes that flue gas gas-liquid separation device and gas filtration are filled
Put；
Linearly driven to fireflood and inject in the fireflood gas injection well in well pattern air and light a fire, before the fireflood for forming stabilization in the oil reservoir
Edge, persistently injects air and keeps fireflood leading edge to push ahead steadily, and the deep fat of generation of burning is linear via fireflood with flue gas
The fireflood producing well extraction in well pattern is driven, by flue gas by conveyance conduit via flue gas gas-liquid separation device, gas filtration
After device carries out separating and filtering, it is recycled into the flue gas gas injection well during flue gas re-injection gravity drives well pattern, through flue gas gas injection
Well is recycled into stratum, and the gas drive producing well then driven via flue gas re-injection gravity in well pattern produces oil recovery.
2. high dip angle heavy crude reservoir according to claim 1 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by, the selection for producing block need to meet following reservoir condition：Oil reservoir inclination angle >=10 °, core intersection>2m, oil reservoir oozes
Saturating rate>10×10-3μm2, viscosity of crude is 50mPas-50000mPas, oil saturation>30%.
3. high dip angle heavy crude reservoir according to claim 1 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by：
Well pattern is linearly driven in the fireflood includes at least row's fireflood gas injection well and row's fireflood producing well, fireflood gas injection well and fireflood
The direction of producing well is vertical with oil reservoir incline direction, and fireflood gas injection well is located at high-order bit, and fireflood producing well is located at lower curtate position, fireflood
Leading edge is advanced from high-order bit to lower curtate position；
Preferably, the row's spacing between fireflood gas injection well and fireflood producing well is 50-150m.
4. high dip angle heavy crude reservoir according to claim 1 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by：
The flue gas re-injection gravity drives well pattern includes at least a bite flue gas gas injection well and at least a bite gas drive producing well, gas drive
Producing well is distributed in around flue gas gas injection well；Hung down with oil reservoir incline direction in the direction of flue gas gas injection well and gas drive producing well
Directly, flue gas gas injection well is located at high-order bit, and gas drive producing well is located at lower curtate position；
Preferably, the row's spacing between flue gas gas injection well and gas drive producing well is 50-150m.
5. high dip angle heavy crude reservoir according to claim 1 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by：The ground installation also includes additional mechanical supercharging device.
6. high dip angle heavy crude reservoir according to claim 3 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by：
When live wire burns to fireflood producing well in fireflood gas injection well, fireflood gas injection well is closed, fireflood producing well is changed to gas injection
Well, and in its lower curtate position deployment two wires fireflood producing well, the deep fat for producing that burns is produced via two wires fireflood in the lump with flue gas
Well production extraction, gas-liquid point is carried out by flue gas by conveyance conduit via flue gas gas-liquid separation device, gas-filtering device
From with filtering after, be recycled into the flue gas gas injection well at the top of oil reservoir, then via gas drive producing well produce recover the oil, the like
Carry out；
Preferably, the row's spacing between every line fireflood producing well is adjacent is 50-150m；Per in line fireflood producing well, fireflood is produced
Well spacing between well is adjacent is 50-150m.
7. high dip angle heavy crude reservoir according to claim 4 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by：
After flue gas after filtering is recycled into the flue gas gas injection well at the top of oil reservoir, with the injection of flue gas, in stratum
Flue gas can the propulsion of peripherad gas drive producing well, when a large amount of flue gases of output in gas drive producing well, gas drive producing well is closed
Closing or gas drive producing well is changed into flue gas gas injection well, and two wires gas drive producing well is disposed around it carries out production oil recovery, according to
It is secondary analogize carry out；
Preferably, the row's spacing between every line gas drive producing well is adjacent is 50-150m；Per in line gas drive producing well, gas drive is produced
Well spacing between well is adjacent is 50-150m.
8. high dip angle heavy crude reservoir according to claim 1 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by：The type that the flue gas re-injection gravity drives well pattern includes areal well pattern, row well pattern or skewed pattern；
Preferably, the areal well pattern includes Five-point method pattern, anti-seven-spat pattern or 9 method well patterns.
9. high dip angle heavy crude reservoir according to claim 1 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by：Fireflood is driven with flue gas re-injection gravity and is developed simultaneously.
10. high dip angle heavy crude reservoir according to claim 1 fireflood is driven with flue gas re-injection gravity and cooperates with recovery method, its
It is characterised by：The reservoir layer position that the reservoir layer position of fireflood and flue gas re-injection gravity drive is located at same layer position or different layers position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611158240.XA CN106761638B (en) | 2016-12-15 | 2016-12-15 | The fireflood of high dip angle heavy crude reservoir cooperates with recovery method with the drive of flue gas re-injection gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611158240.XA CN106761638B (en) | 2016-12-15 | 2016-12-15 | The fireflood of high dip angle heavy crude reservoir cooperates with recovery method with the drive of flue gas re-injection gravity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761638A true CN106761638A (en) | 2017-05-31 |
| CN106761638B CN106761638B (en) | 2019-05-07 |
Family
ID=58889223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611158240.XA Active CN106761638B (en) | 2016-12-15 | 2016-12-15 | The fireflood of high dip angle heavy crude reservoir cooperates with recovery method with the drive of flue gas re-injection gravity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761638B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284862A (en) * | 2019-03-19 | 2019-09-27 | 西南石油大学 | The method for infusing remaining oil in non-condensing gas or combustion (of oil) insitu exploitation oriented perforating |
| CN112377161A (en) * | 2020-11-19 | 2021-02-19 | 中国石油天然气股份有限公司 | Fire flooding method for low-permeability layered heavy oil reservoir |
| CN113294133A (en) * | 2020-08-19 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and system for determining fire flooding front edge in fire flooding well pattern |
| CN113445984A (en) * | 2020-03-25 | 2021-09-28 | 中国石油天然气股份有限公司 | Fire flooding mining method for side water invasion heavy oil reservoir with stratum inclination angle |
| CN113931620A (en) * | 2020-07-13 | 2022-01-14 | 中国石油天然气股份有限公司 | Method and device for calculating gas suction index model of gas injection development oil reservoir and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100096126A1 (en) * | 2008-10-17 | 2010-04-22 | Sullivan Laura A | Low pressure recovery process for acceleration of in-situ bitumen recovery |
| CN104389572A (en) * | 2014-10-28 | 2015-03-04 | 中国石油天然气股份有限公司 | Method for exploiting stratified deposit from in-situ combustion |
| CN104389571A (en) * | 2014-10-28 | 2015-03-04 | 中国石油天然气股份有限公司 | Method for mining uniclinal structure oil pool in combustion of oil in-situ |
| CN205135593U (en) * | 2015-10-23 | 2016-04-06 | 中国石油天然气股份有限公司 | Fireflood is flue gas recharge well net simultaneously |
| CN205225223U (en) * | 2015-11-23 | 2016-05-11 | 中国石油天然气股份有限公司 | Air flue gas is with annotating well pattern structure |
-
2016
- 2016-12-15 CN CN201611158240.XA patent/CN106761638B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100096126A1 (en) * | 2008-10-17 | 2010-04-22 | Sullivan Laura A | Low pressure recovery process for acceleration of in-situ bitumen recovery |
| CN104389572A (en) * | 2014-10-28 | 2015-03-04 | 中国石油天然气股份有限公司 | Method for exploiting stratified deposit from in-situ combustion |
| CN104389571A (en) * | 2014-10-28 | 2015-03-04 | 中国石油天然气股份有限公司 | Method for mining uniclinal structure oil pool in combustion of oil in-situ |
| CN205135593U (en) * | 2015-10-23 | 2016-04-06 | 中国石油天然气股份有限公司 | Fireflood is flue gas recharge well net simultaneously |
| CN205225223U (en) * | 2015-11-23 | 2016-05-11 | 中国石油天然气股份有限公司 | Air flue gas is with annotating well pattern structure |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284862A (en) * | 2019-03-19 | 2019-09-27 | 西南石油大学 | The method for infusing remaining oil in non-condensing gas or combustion (of oil) insitu exploitation oriented perforating |
| CN110284862B (en) * | 2019-03-19 | 2021-04-13 | 西南石油大学 | Method for injecting non-condensable gas and exploiting residual oil in bottom water heavy oil reservoir by in-situ combustion |
| CN113445984A (en) * | 2020-03-25 | 2021-09-28 | 中国石油天然气股份有限公司 | Fire flooding mining method for side water invasion heavy oil reservoir with stratum inclination angle |
| CN113445984B (en) * | 2020-03-25 | 2022-06-03 | 中国石油天然气股份有限公司 | Fire flooding mining method for side water invasion heavy oil reservoir with stratum inclination angle |
| CN113931620A (en) * | 2020-07-13 | 2022-01-14 | 中国石油天然气股份有限公司 | Method and device for calculating gas suction index model of gas injection development oil reservoir and storage medium |
| CN113931620B (en) * | 2020-07-13 | 2023-06-30 | 中国石油天然气股份有限公司 | Method, device and storage medium for calculating gas injection development oil reservoir gas suction index model |
| CN113294133A (en) * | 2020-08-19 | 2021-08-24 | 中国石油天然气股份有限公司 | Method and system for determining fire flooding front edge in fire flooding well pattern |
| CN113294133B (en) * | 2020-08-19 | 2023-05-26 | 中国石油天然气股份有限公司 | Method and system for determining fire flooding front edge in fire flooding well pattern |
| CN112377161A (en) * | 2020-11-19 | 2021-02-19 | 中国石油天然气股份有限公司 | Fire flooding method for low-permeability layered heavy oil reservoir |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106761638B (en) | 2019-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106761638B (en) | The fireflood of high dip angle heavy crude reservoir cooperates with recovery method with the drive of flue gas re-injection gravity | |
| CN102587877B (en) | Multi-element thermal fluid displacement process | |
| CN100455769C (en) | Method for extracting hydrate on bottom of sea by deep earth heart water circulation | |
| CN1875168B (en) | Hydrocarbon recovery from impermeable oil shales | |
| CN104481467B (en) | A kind of method and apparatus exploiting seabed combustible ice | |
| AU2014255651B2 (en) | Method for CO2 EOR and storage and use thereof | |
| CN102767356A (en) | Method for using combustion and vapor combination flooding to exploit thick oil | |
| CN102230372A (en) | Thermal recovery technology of multielement thermal fluid of thickened oil well | |
| CN103758495A (en) | Method for increasing the recovery of hydrocarbons | |
| CN103061730A (en) | Method for coal bed methane mining by multi-element thermal fluid foam displacement | |
| CN101122225A (en) | Fire flooding oil extraction method for vertical well gas-injection horizontal well oil extraction | |
| CN105545274B (en) | A kind of well pattern and method improving thick-layer heavy crude reservoir fireflood effect | |
| CN109209306A (en) | Oil in Super-low Permeability compact oil reservoir horizontal well infuses CO2The asynchronous method for supplementing energy of handling up | |
| CN104196507A (en) | Fireflooding huff and puff and fireflooding linkage thickened oil exploitation method | |
| CN104533368B (en) | Application and system of a kind of combustion in situ flue gas in oil reservoir exploitation | |
| CN104389572B (en) | A kind of method of combustion in situ exploitation stratified deposit | |
| CN207093050U (en) | A kind of gas drive well pattern structure of high water cut rate high inclination-angle LOW PERMEABILITY RESERVOIR | |
| CN102587878A (en) | Multi-element thermal fluid auxiliary gravitational displacement process | |
| CN106437640B (en) | Low-permeability reservoir CO2、N2Mixed oil displacement method | |
| CN103470223B (en) | The method and system that a kind of fossil energy low-carbon (LC) is adopted altogether | |
| CN107448179A (en) | A kind of CO2- water alternately injects the method and its application of purging | |
| CN103939072A (en) | Liquid oxygen strong-stimulation ignition air-driving high temperature pyrolyzing mixed-phase gas composite oil driving technology | |
| CN105089573A (en) | Recovering method for improving substrate and microfracture oil flooding efficiency in dual medium reservoir gas injection | |
| Miller et al. | Field case: Cyclic gas recovery for light oil-using carbon dioxide/nitrogen/natural gas | |
| CN1888381A (en) | Deep low penetrating thin oil reservoir fire flooding oil production firing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |