CN108166962A - Communication method for fire flooding oil injection air well and oil production well - Google Patents
Communication method for fire flooding oil injection air well and oil production well Download PDFInfo
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- CN108166962A CN108166962A CN201810069283.3A CN201810069283A CN108166962A CN 108166962 A CN108166962 A CN 108166962A CN 201810069283 A CN201810069283 A CN 201810069283A CN 108166962 A CN108166962 A CN 108166962A
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- 238000002347 injection Methods 0.000 title claims abstract description 67
- 239000007924 injection Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000004891 communication Methods 0.000 title claims abstract description 25
- 239000007789 gas Substances 0.000 claims description 34
- 238000011084 recovery Methods 0.000 claims description 28
- 230000002265 prevention Effects 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 13
- 238000011065 in-situ storage Methods 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 2
- 230000002269 spontaneous effect Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 39
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000010794 Cyclic Steam Stimulation Methods 0.000 description 1
- 241000283080 Proboscidea <mammal> Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- 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
- E21B43/247—Combustion in situ in association with fracturing processes or crevice forming processes
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- 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
- E21B43/11—Perforators; Permeators
-
- 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
- E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
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- 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)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a communication method of a fire flooding oil injection air well and an oil production well, which comprises the following steps: step 1, determining a target well in the multiple production vertical wells; step 2, performing first directional perforation on a well section of the gas injection vertical well (5) at the oil reservoir part, wherein the perforation direction of the first directional perforation is that the gas injection vertical well (5) points to the target well; step 3, performing first directional fracturing on a first directional perforation part of the gas injection vertical well (5), wherein the fracturing direction of the first directional fracturing is the same as the perforation direction of the first directional perforation; and 4, performing hydraulic fracturing on the first directional fracturing part of the gas injection vertical well (5). The communication method of the fire flooding oil injection well and the oil production well can communicate the air injection well with the production oil production well, so that the overall fire flooding oil production effect is greatly improved, and a fire flooding exploitation precedent of thin and compact oil reservoirs is created.
Description
Technical field
The present invention relates to technical field of petroleum extraction, particularly a kind of fire flood air injection well and oil recovery producing well
Communication method.
Background technology
China's viscous crude is resourceful, and a large amount of high viscosity heavy crude is had been found that in many elephants.Viscous crude is because of its viscosity
High, poor mobile performance, cannot flow, conventional recovery method is difficult effectively to develop, and is caused considerably long under general reservoir condition
Time in could not be developed on a large scale.As all trades and professions are to the increase of energy demand and carrying for oil field development technology
Height, the important component for being developed into entire petroleum industry of viscous crude resource.
Include generally directed to the recovery method of heavy crude reservoir：Cyclic steam stimulation method, steam driving exploitation method, steam auxiliary weight
Power drives extraction system, horizontal well auxiliary steam extraction system, steam doping extraction system etc..After oil reservoir exploitation a period of time, yield
It can decline, in order to increase yield, need to redevelop to oil reservoir, such as fireflood.When carrying out fireflood exploitation, since oil reservoir is developed
Comparatively dense, linking between producing well and air injection well is not very good.Between the direction of burning, speed and design requirement
There is larger gap.
Invention content
In order to solve the problems, such as fireflood exploitation when producing well and air injection well between link it is undesirable, the present invention provides
A kind of ditch of the communication method of fire flood air injection well and oil recovery producing well, the fire flood air injection well and oil recovery producing well
Circulation method can link up air injection well and production producing well, and fire flood overall effect is made to have larger promotion, start thin mutual
And compact oil reservoir fireflood exploitation precedent, fireflood firewire is enable to advance by design direction, guidance is played to the exploitation of similar oil reservoir
Effect.When combustion in situ firewire advances by leaps and bounds phenomenon, technique can be implemented in appropriate well location, advanced by leaps and bounds now with weakening firewire
As, and then improve the whole oil recovery effect burnt and recovered the oil.
The technical solution adopted by the present invention to solve the technical problems is：A kind of fire flood air injection well and production of recovering the oil
The communication method of the communication method of well, the fire flood air injection well and oil recovery producing well is real for fire flood well pattern structure
It applies, which contains a bite gas injection straight well and more mouthfuls of production straight wells, and it is straight that this more mouthfuls production straight wells are located at gas injection
Around well, the communication method of the fire flood air injection well and oil recovery producing well includes the following steps：
Step 1 determines target well in this more mouthfuls production straight wells；
Step 2, well section the first oriented perforating of progress for being located at oil reservoir position to gas injection straight well, first oriented perforating are penetrated
Hole direction is to be directed toward the target well by gas injection straight well；
Step 3 carries out the first directional fracturing, the pressure of first directional fracturing to the first oriented perforating position of gas injection straight well
It is identical with the perforation direction of first oriented perforating to split direction；
Step 4 carries out hydraulic fracturing to the first directional fracturing position of gas injection straight well；
Step 5, combustion in situ recover the oil.
The beneficial effects of the invention are as follows：The communication method of the fire flood air injection well and oil recovery producing well can be accurately square
Just position of the mobile gauge block of adjusting in X-axis and Z-direction solves the accurate gauge mark of track geometry detecting system gauge
Fixed and calibration, while meet the needs of laser device laser line is adjusted with rail vertical irradiation, the time is saved for technical staff, is saved
About manpower, has more saved cost.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation do not constitute improper limitations of the present invention for explaining the present invention.
The schematic diagram that firewire is advanced by leaps and bounds when Fig. 1 is fire flood.
1st, No. 1 producing well；2nd, No. 2 producing wells；3rd, No. 3 producing wells；4th, No. 4 producing wells；5th, gas injection straight well；6th, firewire.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The communication method of a kind of fire flood air injection well and oil recovery producing well, the fire flood air injection well and oil recovery
The communication method of producing well is implemented for fire flood well pattern structure, which contains a bite gas injection straight well 5
With more mouthfuls of production straight wells, this more mouthfuls production straight wells are located at around gas injection straight well 5, the fire flood air injection well and life of recovering the oil
The communication method of production well includes the following steps：
Step 1 determines target well in this more mouthfuls production straight wells；
Step 2, well section the first oriented perforating of progress for being located at oil reservoir position to gas injection straight well 5, first oriented perforating
Perforation direction is to be directed toward the target well by gas injection straight well 5；
Step 3 carries out the first directional fracturing to the first oriented perforating position of gas injection straight well 5, first directional fracturing
Pressure break direction is identical with the perforation direction of first oriented perforating；
Step 4 carries out hydraulic fracturing to the first directional fracturing position of gas injection straight well 5；
Step 5, combustion in situ recover the oil.
The fire flood well pattern structure contains a bite gas injection straight well 5 and more mouthfuls of production straight wells, this more mouthfuls production straight wells are located at
Around gas injection straight well 5, the quantity of the production straight well can be 4 mouthfuls or 6 mouthfuls.In step 3, which can produce
The crack of raw design direction requirement, makes crack extend along original direction to farther place.In step 4, support is carried in fracturing fluid
Agent, the size of proppant are reasonably selected and are combined according to different reservoir conditions.
In the present embodiment, it also follows the steps below before step 1：The developmental state of geological analysis oil reservoir, judgement are
It is no to carry out in next step.If the porosity and permeability on the stratum mainly according to residing for oil reservoir is to determine whether carry out above-mentioned steps 1
To step 5, wherein, the upper limit of the permeability is 1 × 10- 3μm2, the upper limit of the porosity is 12%, i.e. the permeability is less than etc.
In 1 × 10- 3μm2, and the porosity be less than or equal to 12% when, above-mentioned steps 1 can be carried out to step 5.In step 3, this
Multiple-pulse loading pressure break may be used in one directional fracturing.In step 4, proppant is carried in the fracturing fluid of the hydraulic fracturing.
Combustion in situ oil recovery technique at present, firewire direction of propulsion are that all the winds, the direction of firewire is unable to control, complete
It is determined entirely by oil reservoir developmental state.I.e. in steps of 5, when carrying out combustion in situ oil recovery, the firewire 6 that fireflood is formed often will appear
The situation that firewire is advanced by leaps and bounds.What scene can control is reservoir layer position combustion case, you can which layer position to be controlled to burn and is burnt
Situation, the mode of mainly control injection air capacity controls.
In order to which firewire is controlled to advance by leaps and bounds, present invention further proposes it is a kind of control combustion in situ burning direction method,
More mouthfuls of production straight wells are divided into target well and prevention and control well by this method first, i.e., in this more mouthfuls produce straight well, in addition to the target well
Well location in addition is prevention and control well.Target well be firewire direction of propulsion be directed toward well, target well can according to amount number and
Geological condition is judged.As shown in Figure 1, if it is desired to firewire is promoted to the direction of No. 1 producing well 1 and No. 4 producing wells 4, then and 1
Number producing well 1 and No. 4 producing wells are target well, then No. 2 producing wells 2 and No. 3 producing wells 3 are prevention and control well；If it is desired to firewire is to 1
The direction of number producing well 1 promotes, then No. 1 producing well 1 is target well, then 2, No. 3 producing wells 3 of No. 2 producing wells and No. 4 producing wells 4
It is prevention and control well.
The objective for implementation of the method for the burning direction of the control combustion in situ is respectively for target well and prevention and control well, i.e., in step
In rapid 5, when occurring, firewire is advanced by leaps and bounds, direction of advancing by leaps and bounds is advanced by leaps and bounds and (is advanced in controlled range in firewire towards prevention and control well and the firewire
Cheng Zhong, the fluctuation in the range of the 5% of normal value of well casing gas and crude oil yield fluctuation is the controlled range) within when,
It follows the steps below：
Step 5.1a, profile control operation is carried out to the prevention and control well.Such as No. 1 producing well 1 is target well, then No. 2 producing wells 2,3
Producing well 3 and No. 4 producing wells 4 are prevention and control well.It advances by leaps and bounds at this point, there is firewire, direction No. 3 producing wells 3 of direction that firewire is advanced by leaps and bounds,
And the firewire is advanced by leaps and bounds within controlled range, then No. 33 profile control operations of producing well is blocked.The profile control operation can adopt
With air foam or nitrogen foam.
In steps of 5, when occurring, firewire is advanced by leaps and bounds, direction of advancing by leaps and bounds is advanced by leaps and bounds towards prevention and control well and the firewire beyond controlled range
When, it follows the steps below：
Step 5.1b, the second oriented perforating is carried out to well section of the target well location in oil reservoir position, second oriented perforating
Perforation direction is to be directed toward gas injection straight well 5 by the target well；
Step 5.2b, the second directional fracturing, the pressure of second directional fracturing are carried out to the oriented perforating position of the target well
It is identical with the perforation direction of second oriented perforating to split direction；
Step 5.3b, hydraulic fracturing is carried out to the second directional fracturing position of the target well.
If No. 1 producing well 1 is target well, 2, No. 3 producing wells 3 of No. 2 producing wells and No. 4 producing wells 4 are prevention and control well.This
When, there is firewire and advance by leaps and bounds, the direction that firewire is advanced by leaps and bounds is towards No. 3 producing wells 3, and the firewire is advanced by leaps and bounds within controlled range
When, it follows the steps below：
Step 5.1b, the well section for being located at oil reservoir position to No. 1 producing well 1 carries out the second oriented perforating, which penetrates
The perforation direction in hole is to be directed toward gas injection straight well 5 by No. 1 producing well 1；
Step 5.2b, the second directional fracturing, second directional fracturing are carried out to the oriented perforating position of No. 1 producing well 1
Pressure break direction it is identical with the perforation direction of second oriented perforating；
Step 5.3b, hydraulic fracturing is carried out to the second directional fracturing position of No. 1 producing well 1, can be taken in fracturing fluid
Band proppant, the size of proppant are reasonably selected and are combined according to different reservoir conditions.
In steps of 5, it when carrying out combustion in situ oil recovery, lights a fire first to gas injection straight well 5, the igniting is using electric point
Fire, chemic ignition or steam injection spontaneous ignition.In the present invention, first oriented perforating and the second oriented perforating are only perforation sides
To difference, the technological means of use is essentially identical, and is the prior art.First directional fracturing and the second directional fracturing are only
Pressure break direction is different, and the technological means of use is essentially identical, and is the prior art.It can phase between air injection well and producing well
Mutually conversion.In addition, hydraulic fracturing seam, it should make between crack is in and splits and do not split, firewire otherwise to be caused to advance by leaps and bounds phenomenon
Occur, be unfavorable for producing.If the frac pressure that hydraulic fracturing seam uses is the 95%~105% of fracture pressure, splitting at this time
Seam can ensure to glow, this is the perfect condition of fire flood.
Below by taking 66 pieces of fire flood projects of Du of Liaohe Oil Field as an example, it is empty that fire flood note of the present invention is discussed in detail
The particular condition in use of the communication method of gas well and oil recovery producing well.
Du's 66-02-31 (the gas injection straight well 5 being equivalent in Fig. 1) well is a bite fireflood air injection well of 66 pieces of Du, is noted first
Vapour, 26,280,000 mark side's air, air injection pressure are maintained between 8MPA~10MPA, and surrounding producing well (is equivalent to No. 1 in Fig. 1
The producing well 3 of producing well 2,3 of producing well 1,2 and No. 4 producing wells 4) production effect is good, to scene comparison hair after a period of time
Existing production well production rises comparatively fast, and oil well casing tolerance exceeds normal volume, by analyzing exhaust gas composition,
As a result display is that oxygen content is exceeded, and carbon dioxide content is on the low side, and the decline of some producing well crude outputs is also very fast.Through geology
Obtain it is since fireflood firewire is advanced by leaps and bounds caused by with site administrator's analysis, need to take control measure that firewire is controlled to advance by leaps and bounds speed.
The oil well high to yield implements temporarily stifled profile control operation, while control the casing gas burst size of all producing wells, avoids
Phenomenon of advancing by leaps and bounds, which adds, to be feared.Show that carry out the finer and close position of reservoir improvement i.e. oil reservoir in control well carries out according to oil pool analysis simultaneously
Transformation.Choosing Du's 66-31-45 (No. 3 producing wells 3 being equivalent in Fig. 1) oil well is transformed, well spacing air injection well Du 66-02-
31 be 300 meters, carries out kill-job operation to the nitrogen of Du66-31-45Jing injection 500-600 mark sides first, then tripping in multiple-pulse
Loading fracturing string is oriented pressure break seam.Act Multi pulse loading fracturing string, tripping in hydraulic fracturing tubing string, into stratum
The fracturing fluid of 300 mark sides is squeezed into, while 30 side of proppant of carrying 30/50 is supported.The well is closed after being transformed.This is arranged
After applying implementation 14 days, crude output and tail gas yield are all restored to normal level.
Du's 66-55-21 (No. 1 producing well 1 being equivalent in Fig. 1) well is a bite fireflood producing well of 66 pieces of Du, is being produced
Find that the well tail gas yield is larger in the process, oxygen content therein is more than limit value, the well and air injection well connectivity when saying
It is bad, in order to expand firewire sweep area and speed, determine to be transformed the well.In order to increase connectivity, oriented perforating is used
Technology carries out perforation transformation to oil reservoir, and then tripping in pulse loading fracturing technique carries out pressure break seam, utilizes hydraulic fracturing skill afterwards
Art carries out oil reservoir pressure break and squeezes into 650 side of fracturing fluid, while 53 side of proppant of carrying 30/50 is supported such that crack obtains
Further extension.It is carried out after construction, injects the steaming that 300 tons of mass dryness fractions are more than 90% after injecting 100,000 mark side of air in advance
Vapour carries out Self-burning, and raw persistently injection air injection rate is daily 10,000 mark side, and after running 7 days, the condition of production has obtained larger
Improvement, firewire fltting speed is in the range of design requirement.
The present invention can be by oriented perforating technology, multiple-pulse on-load pressure, hydraulic fracturing and takes sand technology orientation seam,
The firewire control design direction of combustion in situ is promoted, and then improves crude output.The present invention can control the burning of combustion in situ
Direction, while it is capable of the size of control critical eigenvalue to control burning velocity.Overcoming can only be controlled in the past by the size of air capacity
The method of burning velocity.The present invention is suitable for the manual control fracture extension direction of thin mutual oil reservoir and compact oil reservoir, and then advantageous
In crude oil production, increase economic efficiency.
The above, only specific embodiments of the present invention, it is impossible to the range that its restriction invention is implemented, so it is equivalent
The displacement of component or the equivalent variations made according to scope of patent protection of the present invention and modification, should all still fall within what this patent was covered
Scope.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical solution, technical solution with
Use can be freely combined between technical solution.
Claims (9)
1. the communication method of a kind of fire flood air injection well and oil recovery producing well, which is characterized in that the fire flood note is empty
The communication method of gas well and oil recovery producing well is implemented for fire flood well pattern structure, which contains flatly
Gas injection straight well (5) and more mouthfuls of production straight wells, this more mouthfuls production straight wells are located at around gas injection straight well (5), the fire flood note
The communication method of air well and oil recovery producing well includes the following steps：
Step 1 determines target well in this more mouthfuls production straight wells；
Step 2 carries out the first oriented perforating to well section of the gas injection straight well (5) positioned at oil reservoir position, which penetrates
Hole direction is to be directed toward the target well by gas injection straight well (5)；
Step 3 carries out the first directional fracturing, the pressure of first directional fracturing to the first oriented perforating position of gas injection straight well (5)
It is identical with the perforation direction of first oriented perforating to split direction；
Step 4 carries out hydraulic fracturing to the first directional fracturing position of gas injection straight well (5)；
Step 5, combustion in situ recover the oil.
2. the communication method of fire flood air injection well according to claim 1 and oil recovery producing well, which is characterized in that
It is also followed the steps below before step 1：
The developmental state of oil reservoir is analyzed, is judged whether in next step.
3. the communication method of fire flood air injection well according to claim 1 and oil recovery producing well, which is characterized in that
In step 3, which loads pressure break using multiple-pulse.
4. the communication method of fire flood air injection well according to claim 1 and oil recovery producing well, which is characterized in that
In step 4, proppant is carried in the fracturing fluid of the hydraulic fracturing.
5. the communication method of fire flood air injection well according to claim 1 and oil recovery producing well, which is characterized in that
In this more mouthfuls production straight wells, the well location other than the target well is prevention and control well.
6. the communication method of fire flood air injection well according to claim 5 and oil recovery producing well, which is characterized in that
In step 5, when occurring that firewire is advanced by leaps and bounds, direction of advancing by leaps and bounds is advanced by leaps and bounds towards prevention and control well and the firewire within controlled range, carry out
Following steps：
Step 5.1a, profile control operation is carried out to the prevention and control well.
7. the communication method of fire flood air injection well according to claim 6 and oil recovery producing well, which is characterized in that should
Profile control operation uses air foam or nitrogen foam.
8. the communication method of fire flood air injection well according to claim 6 and oil recovery producing well, which is characterized in that
In step 5, when occurring that firewire is advanced by leaps and bounds, direction of advancing by leaps and bounds is advanced by leaps and bounds towards prevention and control well and the firewire beyond controlled range, carry out with
Lower step：
Step 5.1b, the second oriented perforating, the perforation of second oriented perforating are carried out to well section of the target well location in oil reservoir position
Direction is to be directed toward gas injection straight well (5) by the target well；
Step 5.2b, the second directional fracturing, the pressure break side of second directional fracturing are carried out to the oriented perforating position of the target well
To identical with the perforation direction of second oriented perforating；
Step 5.3b, hydraulic fracturing is carried out to the second directional fracturing position of the target well.
9. the communication method of fire flood air injection well according to claim 1 and oil recovery producing well, which is characterized in that
In step 5, when carrying out combustion in situ oil recovery, light a fire first to gas injection straight well (5), the igniting is using electric ignition, chemical point
Fire or steam injection spontaneous ignition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810069283.3A CN108166962A (en) | 2018-01-24 | 2018-01-24 | Communication method for fire flooding oil injection air well and oil production well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810069283.3A CN108166962A (en) | 2018-01-24 | 2018-01-24 | Communication method for fire flooding oil injection air well and oil production well |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109536151A (en) * | 2019-01-08 | 2019-03-29 | 中国石油天然气股份有限公司 | Solution type combustion-supporting channeling sealing agent for fireflooding oil reservoir |
| CN112177580A (en) * | 2019-07-02 | 2021-01-05 | 中国石油天然气股份有限公司 | Fire flooding oil extraction method |
| CN112302598A (en) * | 2020-11-20 | 2021-02-02 | 西南石油大学 | System and method for generating steam underground in ultra-deep heavy oil reservoir |
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| CN107387047A (en) * | 2017-08-03 | 2017-11-24 | 中国石油天然气股份有限公司 | Fireflooding sectional pipe column and ignition gas injection method |
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| CN109536151A (en) * | 2019-01-08 | 2019-03-29 | 中国石油天然气股份有限公司 | Solution type combustion-supporting channeling sealing agent for fireflooding oil reservoir |
| CN109536151B (en) * | 2019-01-08 | 2021-11-02 | 中国石油天然气股份有限公司 | Solution type combustion-supporting channeling sealing agent for fireflooding oil reservoir |
| CN112177580A (en) * | 2019-07-02 | 2021-01-05 | 中国石油天然气股份有限公司 | Fire flooding oil extraction method |
| CN112302598A (en) * | 2020-11-20 | 2021-02-02 | 西南石油大学 | System and method for generating steam underground in ultra-deep heavy oil reservoir |
| CN112302598B (en) * | 2020-11-20 | 2022-04-01 | 西南石油大学 | System and method for generating steam underground in ultra-deep heavy oil reservoir |
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Application publication date: 20180615 |