CN106089163A - A kind of steam injection associating air injection and production gas well gas fire huff and puff oil recovery method - Google Patents
A kind of steam injection associating air injection and production gas well gas fire huff and puff oil recovery method Download PDFInfo
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- CN106089163A CN106089163A CN201610622255.0A CN201610622255A CN106089163A CN 106089163 A CN106089163 A CN 106089163A CN 201610622255 A CN201610622255 A CN 201610622255A CN 106089163 A CN106089163 A CN 106089163A
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- 238000002347 injection Methods 0.000 title claims abstract description 112
- 239000007924 injection Substances 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000011084 recovery Methods 0.000 title claims abstract description 31
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 230000005465 channeling Effects 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 68
- 239000010779 crude oil Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000005336 cracking Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 12
- 230000015572 biosynthetic process Effects 0.000 abstract description 11
- 230000035699 permeability Effects 0.000 abstract description 6
- 238000005325 percolation Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 100
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000295 fuel oil Substances 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
- 239000011435 rock Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- -1 steam Substances 0.000 description 1
- 239000013589 supplement Substances 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
- E21B43/166—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
- 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
- E21B43/20—Displacing by water
-
- 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
-
- 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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- 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)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a kind of steam injection associating air injection and produce gas well gas fire huff and puff oil recovery method, for existing LOW PERMEABILITY RESERVOIR, heavy crude reservoir, when high-content wax oil reservoirs etc. use air-injection displacement, air percolation flow velocity in the earth formation is very fast and the impact of formation heterogeneity, easily form fingering, has channeling, thus cause gas injection individual event to be advanced by leaps and bounds, by effect inequality, air drives the problems such as inefficiency, present invention employs steam injection associating air injection and produce gas well gas fire huff and puff oil recovery method, gas injection well is carried out steam injection de-plugging, tune is altered, used vapour fire to handle up by effect inequality producing well and draw effect, reverse Pintsch process band can be formed in down-hole, continuous print passage is formed between producing well and gas injection well, and stewing well time is short, solve gas injection individual event to advance by leaps and bounds, rate of oil production and oil recovery efficiency is improved by while imitating unequal problem.
Description
Technical field
The present invention relates to LOW PERMEABILITY RESERVOIR, heavy crude reservoir, super-heavy oil deposit, the oil production method of high-content wax oil reservoir, be specifically related to
Steam injection associating air injection and production gas well gas fire huff and puff oil recovery technique, belong to field of petroleum exploitation.
Background technology
At present at field of petroleum exploitation many employings air-injection displacement, air drives the difference of other oil production methods relatively and is,
After air enters oil reservoir, oxygen fraction and crude oil generation chemical reaction, make crude oil crack, macromolecular chain breaks to form little point
Son, is divided by high carbon chain heavy and is cracked into various aromatic hydrocarbon, alcohols and various lightweight differentiation compound, and produce great amount of carbon dioxide,
Carbon dioxide is dissolved in crude oil and enhances the mobility of crude oil, and in air, remaining nitrogen assembles formation pneumatic jack in the earth formation, produces
The pressure promoting crude oil to flow to producing well, makes crude oil pass through producing well extraction；With the continuous injection of landing surface hollow gas, over the ground
Layer energy supplements, renwing stratum pressure, can increase oil and improve recovery ratio.But for LOW PERMEABILITY RESERVOIR, heavy crude reservoir, super-viscous oil oil
Hide, high-content wax oil reservoir there will be gas injection individual event and advances by leaps and bounds, driven the feelings such as inefficiency by effect inequality, air when using air-injection displacement
Condition.Therefore for solving an above-mentioned difficult problem, making the air of injection reach greatest benefit, the present invention will carry out steam injection solution to gas injection well
Stifled, tune is altered, and is used vapour fire to handle up by effect inequality producing well and draws effect.
Summary of the invention
In air drives production process, during due to air injection, air percolation flow velocity in the earth formation is very fast and stratum heterogeneous body
Property impact, easily form fingering, has channeling, thus cause gas entry profile uneven, cause between part producing well and gas injection well
Being formed by effect inequality, the present invention have employed gas injection well steam injection associating air injection and produces gas well gas fire on the basis of driving based on air
The mode handled up, carries out steam injection de-plugging, adjusts and alter gas injection well, is used vapour fire to handle up by effect inequality producing well and draws effect,
The air making injection reaches greatest benefit, uses this scheme can solve LOW PERMEABILITY RESERVOIR, heavy crude reservoir, super-heavy oil deposit, Gao Han
Wax oil is hidden occurs when using air-injection displacement that gas injection individual event is advanced by leaps and bounds, driven the situations such as inefficiency by effect inequality, air.
Can realize the purpose of the present invention by the following technical solutions:
A kind of steam injection associating air injection and production gas well gas fire huff and puff oil recovery method, completed by following steps, including:
1. the requirement recovered the oil according to high-order bit gas injection, low position uses inverted five spot, anti-9 points, row's formula well spacing method to gas injection well
And producing well (2) carries out well spacing (1)；
2. pair gas injection well (1) carries out carrying out completion by air injection, injects the 280-330 of 80-300 ton in gas injection well (1)
DEG C high-temperature steam stratum is heated, set up temperature field, stratum heat preheating backward gas injection well (1) inject air light a fire,
And proceed by air-injection displacement；
3. after air-injection displacement starts 3 months, proceed by producing well (2) gas fire and handle up (7) process: first to producing well
(2) inject the high-temperature-hot-water 50-100 ton of 130-170 DEG C, after completing, inject air 8-30 ten thousand side, note sky further according to formation parameter
Jia bombardier suddenly completes backward producing well (2) and injects high-temperature steam (3) the 200-1000 ton of 280-330 DEG C, and gas injection is stewing well 3-after terminating
15 days, making steam fully heat in-place oil, there is reverse cracking reaction, producing well (2) well with crude oil in the air injected in advance
End local pressure raises, and forms pressure differential with strata pressure, promotes crude oil to flow to producing well (2), to life after pressure stability
Produce well (2) and carry out open flow oil recovery；
4. after open flow recovers the oil and terminates, re-start completion practice, oil well is transferred to normal oil recovery, allow and stratum injects
Air continues stable with oil reservoir generation cracking reaction, and constantly observes, when occurring that has channeling situation and gas entry profile are uneven
Time, can again repeat producing well (2) gas fire and handle up (7) operation.
Wherein, in step 1, gas injection well and the selection of producing well and well spacing are to determine oil in stratum according to geology analysis
The situation hidden includes that permeability, porosity, moisture content, oil saturation etc. complete.
In step 2, the high-temperature steam temperature preferably 320 DEG C that gas injection well injects.
In step 3, the high-temperature-hot-water temperature preferably 150 DEG C that producing well injects；The high-temperature steam temperature that producing well injects is excellent
Select 320 DEG C.
In step 3, after gas injection terminates, preferably boil in a covered pot over a slow fire well 12 days.
Carry out producing well in step 3 before gas fire handles up, gas entry profile, producing well tail gas amount etc. to be carried out system and dividing
Analysis, connects situation with determine gas injection well and producing well；And producing well is carried out completion, well-flushing, after well-flushing in sleeve pipe successively
With entering horn mouth under oil pipe connected mode, packer, compensator carry out sealing.
Need to control daily fluid production rate when oil well transfers to normal oil recovery in step 4.
Use the steam injection associating air injection of this case and produce gas well gas fire huff and puff oil recovery method, can reach following effect:
Using steam injection associating air to drive method of gas injection, when production operation, safety is higher, can effectively prevent oil well raw
During product, in the has channeling of generation, tail gas, oxygen content is too high causes the potential safety hazards such as blast.
The production gas well gas fire of this case is handled up method, and the component injected in down-hole is hot water, steam, air, it is possible at well
The Pintsch process band that lower formation is reverse, can effectively reduce downhole crude viscosity, producing well shaft bottom and strata pressure and form pressure differential
While change the trend of gas passage in stratum, between producing well and gas injection well formed continuous print passage, relatively conventional
Steam soak sphere of action is bigger, and the stewing well time is short.
This steam injection associating air injection and produce gas well gas fire huff and puff oil recovery method for LOW PERMEABILITY RESERVOIR, heavy crude reservoir, super thick
Gas injection individual event can be solved during oil oil reservoir, high-content wax oil reservoir advance by leaps and bounds, driven the problems such as inefficiency by effect inequality, air, improve and recover the oil
Speed and oil recovery efficiency.
Water-drive oil recovery relatively eliminates multi-purpose station, water-injection station and water injection facility, and cost is relatively low, and economic benefit is higher.
Accompanying drawing explanation
Fig. 1 is reverse cracking reaction schematic diagram.
1. gas injection well；2. producing well；3. producing well inverse injection steam；4. Pintsch process forward position；5. overlying rock；6. logical
Road；7. gas fire is handled up；8. descend rock stratum；9. oil reservoir
Detailed description of the invention
Below by embodiment, technical scheme is described in further detail.
Embodiment 1
A kind of steam injection associating air injection and produce gas well gas fire huff and puff oil recovery method, including: 1. according to high-order bit gas injection, low
The requirement recovered the oil in position uses inverted five spot, anti-9 points, row's formula well spacing method that gas injection well (1) and producing well (2) are carried out well spacing；2. pair
Gas injection well (1) carries out high-pressure gas injection completion, and in gas injection well (1), stratum is heated by the high-temperature steam of injection 260 tons 280 DEG C, builds
Vertical temperature field, stratum heats the backward gas injection well of preheating (1) injection air and lights a fire, and proceeds by air-injection displacement；3. empty
Gas drive is recovered the oil and is started after 3 months, proceeds by producing well (2) gas fire and handles up (7) process: first injects 130 DEG C high to producing well (2)
Warm water 100 tons, injects air 150,000 side further according to formation parameter after completing, and air injection step completes backward producing well (2) note
Entering 280 DEG C of high-temperature steams (3) 1000 tons, gas injection is stewing well 15 days after terminating, and make steam fully heat in-place oil, inject in advance
There is reverse cracking reaction with crude oil in air, producing well (2) shaft bottom local pressure raises, and forms pressure differential with strata pressure, promotees
Make crude oil flow to producing well (2), after pressure stability, producing well (2) is carried out open flow oil recovery；4. after open flow oil recovery terminates,
The air injected in stratum continues stable with oil reservoir generation cracking reaction, and constantly observes, when occur has channeling situation and
During gas entry profile inequality, can again repeat producing well (2) gas fire and handle up (7) operation.
Embodiment 2
A kind of steam injection associating air injection and produce gas well gas fire huff and puff oil recovery method, including: 1. according to high-order bit gas injection, low
The requirement recovered the oil in position uses inverted five spot, anti-9 points, row's formula well spacing method that gas injection well (1) and producing well (2) are carried out well spacing；2. pair
Gas injection well (1) carries out high-pressure gas injection completion, and in gas injection well (1), stratum is heated by the high-temperature steam of injection 200 tons 300 DEG C, builds
Vertical temperature field, stratum heats the backward gas injection well of preheating (1) injection air and lights a fire, and proceeds by air-injection displacement；3. empty
Gas drive is recovered the oil and is started after 3 months, proceeds by producing well (2) gas fire and handles up (7) process: first injects 150 DEG C high to producing well (2)
Warm water 80 tons, injects air 200,000 side further according to formation parameter after completing, and air injection step completes backward producing well (2) and injects
300 DEG C of high-temperature steams (3) 800 tons, gas injection is stewing well 12 days after terminating, and make steam fully heat in-place oil, the sky injected in advance
There is reverse cracking reaction with crude oil in gas, producing well (2) shaft bottom local pressure raises, and forms pressure differential with strata pressure, promotes
Crude oil flows to producing well (2), after pressure stability, producing well (2) is carried out open flow oil recovery；4. after open flow oil recovery terminates, ground
The air injected in Ceng continues stable with oil reservoir generation cracking reaction, and constantly observes, when has channeling situation and suction occur
During gas section inequality, can again repeat producing well (2) gas fire and handle up (7) operation.
Embodiment 3
A kind of steam injection associating air injection and produce gas well gas fire huff and puff oil recovery method, including: 1. according to high-order bit gas injection, low
The requirement recovered the oil in position uses inverted five spot, anti-9 points, row's formula well spacing method that gas injection well (1) and producing well (2) are carried out well spacing；2. pair
Gas injection well (1) carries out high-pressure gas injection completion, and in gas injection well (1), stratum is heated by the high-temperature steam of injection 180 tons 320 DEG C, builds
Vertical temperature field, stratum heats the backward gas injection well of preheating (1) injection air and lights a fire, and proceeds by air-injection displacement；3. empty
Gas drive is recovered the oil and is started after 3 months, proceeds by producing well (2) gas fire and handles up (7) process: first injects 150 DEG C high to producing well (2)
Warm water 80 tons, injects air 300,000 side further according to formation parameter after completing, and air injection step completes backward producing well (2) and injects
320 DEG C of high-temperature steams (3) 500 tons, gas injection is stewing well 10 days after terminating, and make steam fully heat in-place oil, the sky injected in advance
There is reverse cracking reaction with crude oil in gas, producing well (2) shaft bottom local pressure raises, and forms pressure differential with strata pressure, promotes
Crude oil flows to producing well (2), after pressure stability, producing well (2) is carried out open flow oil recovery；4. after open flow oil recovery terminates, ground
The air injected in Ceng continues stable with oil reservoir generation cracking reaction, and constantly observes, when has channeling situation and suction occur
During gas section inequality, can again repeat producing well (2) gas fire and handle up (7) operation.
Embodiment 4
A kind of steam injection associating air injection and produce gas well gas fire huff and puff oil recovery method, including: 1. according to high-order bit gas injection, low
The requirement recovered the oil in position uses inverted five spot, anti-9 points, row's formula well spacing method that gas injection well (1) and producing well (2) are carried out well spacing；2. pair
Gas injection well (1) carries out high-pressure gas injection completion, and in gas injection well (1), stratum is heated by the high-temperature steam of injection 180 tons 330 DEG C, builds
Vertical temperature field, stratum heats the backward gas injection well of preheating (1) injection air and lights a fire, and proceeds by air-injection displacement；3. empty
Gas drive is recovered the oil and is started after 3 months, proceeds by producing well (2) gas fire and handles up (7) process: first injects 170 DEG C high to producing well (2)
Warm water 60 tons, injects air 300,000 side further according to formation parameter after completing, and air injection step completes backward producing well (2) and injects
330 DEG C of high-temperature steams (3) 450 tons, gas injection is stewing well 12 days after terminating, and make steam fully heat in-place oil, the sky injected in advance
There is reverse cracking reaction with crude oil in gas, producing well (2) shaft bottom local pressure raises, and forms pressure differential with strata pressure, promotes
Crude oil flows to producing well (2), after pressure stability, producing well (2) is carried out open flow oil recovery；4. after open flow oil recovery terminates, ground
The air injected in Ceng continues stable with oil reservoir generation cracking reaction, and constantly observes, when has channeling situation and suction occur
During gas section inequality, can again repeat producing well (2) gas fire and handle up (7) operation.
Claims (4)
1. a steam injection associating air injection and production gas well gas fire huff and puff oil recovery method, it is characterised in that including:
1). the requirement recovered the oil according to high-order bit gas injection, low position carries out well spacing to gas injection well (1) and producing well (2)；
2). gas injection well (1) is carried out high-pressure gas injection completion, the high temperature of 280-330 DEG C of injection 80-300 ton in gas injection well (1)
Stratum is heated by steam, sets up temperature field, stratum heat preheating backward gas injection well (1) inject air light a fire, and start into
Row air-injection displacement；
3). after air-injection displacement starts 3 months, proceed by producing well (2) gas fire and handle up (7) process: first note to producing well (2)
Entering the high-temperature-hot-water 50-100 ton of 130-170 DEG C, reinject air 8-30 ten thousand side after completing, air injection step completes backward production
Well (2) injects high-temperature steam (3) the 200-1000 ton of 280-330 DEG C, and gas injection is stewing well 3-15 days after terminating, and make steam fully heat
In-place oil, there is reverse cracking reaction with crude oil, after pressure stability, producing well (2) is carried out open flow in the air injected in advance
Recover the oil；
4). after open flow recovers the oil and terminates, the air injected in stratum continues stable with oil reservoir generation cracking reaction, and constantly enters
Row is observed, and when there is has channeling situation and gas entry profile inequality, can again repeat producing well (2) gas fire and handle up (7) operation.
2. steam injection associating air injection as claimed in claim 1 and production gas well gas fire huff and puff oil recovery method, it is characterised in that step
In rapid 2, stratum is heated by the high-temperature steam of inject 180 tons in gas injection well (1) 320 DEG C.
3. steam injection associating air injection as claimed in claim 1 and production gas well gas fire huff and puff oil recovery method, it is characterised in that step
In rapid 3, the high-temperature-hot-water temperature that producing well (2) injects is 150 DEG C, injects 80 tons；The high-temperature steam temperature that producing well (2) injects
It is 320 DEG C, injects 500 tons.
4. steam injection associating air injection as claimed in claim 1 and production gas well gas fire huff and puff oil recovery method, it is characterised in that step
In rapid 3, gas injection is stewing well 12 days after terminating.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100599A (en) * | 2017-03-17 | 2017-08-29 | 中国石油天然气股份有限公司 | Oil production method and well pattern arrangement structure thereof |
| CN107178349A (en) * | 2017-07-04 | 2017-09-19 | 中国石油天然气股份有限公司 | Method and device for improving mining effect of fireflooding assisted gravity drainage |
| CN110439514A (en) * | 2018-05-04 | 2019-11-12 | 中国石油天然气股份有限公司 | Gas drive oil displacement method |
| US11428065B2 (en) | 2019-08-05 | 2022-08-30 | Petrochina Company Limited | Borehole wall resistance increasing apparatus for improving energy utilization rate of injection gas |
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| CN107178349B (en) * | 2017-07-04 | 2019-12-10 | 中国石油天然气股份有限公司 | Method and device for improving mining effect of fireflooding assisted gravity drainage |
| CN110439514A (en) * | 2018-05-04 | 2019-11-12 | 中国石油天然气股份有限公司 | Gas drive oil displacement method |
| US11428065B2 (en) | 2019-08-05 | 2022-08-30 | Petrochina Company Limited | Borehole wall resistance increasing apparatus for improving energy utilization rate of injection gas |
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