CN105840162B - Underground combustion Convective Heating method - Google Patents
Underground combustion Convective Heating method Download PDFInfo
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- CN105840162B CN105840162B CN201610324511.8A CN201610324511A CN105840162B CN 105840162 B CN105840162 B CN 105840162B CN 201610324511 A CN201610324511 A CN 201610324511A CN 105840162 B CN105840162 B CN 105840162B
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- gas
- burner
- combustion
- air
- underground
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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
- E21B36/00—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/02—Heating, cooling, insulating arrangements for boreholes or wells, e.g. for use in permafrost zones using burners
-
- 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
- E21B43/241—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection combined with solution mining of non-hydrocarbon minerals, e.g. solvent pyrolysis of oil shale
Abstract
The invention discloses the open burning convective heating means in underground, it includes: 1) to inject pressure-air into well set；2) combustion gas and combustion-supporting gas are sent into the closely lower exit of well set through pipeline respectively, burnt in the burner after mixing, 3) the heat air that burner combustion generates, while the exhaust gas for generation of burning mixes with air；Also in the lower section of burner in the step 1), fire-retardant fluid is injected through pipeline；The fire-retardant fluid is CO2Gas, vapor or water.Burner is located at underground, open burning, and pressure-air is isolated flame, generates Hybrid Heating medium, and heat source directly contacts with heated material, the process of heat exchange is omitted, reduces thermal loss；Fire-retardant fluid and pressure-air can be converted, when unexpected, more one of safety curtain.
Description
Technical field
The invention belongs to petroleum, oil shale recovery field, and in particular to a kind of open burning convective heating means in underground and
Underground opens burning convective heating device.
Background technique
All over the world, there are widely distributed hydrocarbon reservoirs, represent in foreseeable future and persistently send out for world economy
The critical energy of exhibition.These reservoirs include that the hydrocarbon mixture-of viscosity is referred to as " tar ", " heavy oil " or " extra heavy oil " often,
Typically there is the viscosity in about 3000 to 1000000 centipoise ranges when measuring at about 37.5 DEG C.Many carryings
The geological formations of hydrocarbon include this hydrocarbon mixture, because the high viscosity of hydrocarbon content is without allowing hydrocarbon content promptly to flow
To pit shaft to exploit.In certain hydrocarbon reservoirs, such as in oil shale formation, hydrocarbon ingredient must thermally decompose into more low molecular weight
Compound recycles it from reservoir to realize.In many cases, it is necessary to be heated to reservoir more than 300 DEG C
Temperature, to realize the exploitation of the hydrocarbon in hydrocarbon reservoir.
Converted in-situ and exploitation are carried out for the organic matter in oil shale formation, be otherwise known as underground retoring technique, i.e., directly
It connects and destructive distillation is carried out to the oil shale of underground, so that oil gas be made directly to export from underground to ground by producing well.According to heating
Mode is different, is broadly divided into conduction heating (electric heating, combustion heating), fluid convection heating and radiant heating.Electricity is taken at present
The technology of heating method is most typical be exactly Shell Co. Ltd ICP technology, this technology uses vertical drilling method, by electric heater
It is placed into oil shale ore bed through drilling, using conduction of heat heating oil shale layer, converts the kerogen in oil shale to
Then these oil gas products are evacuated to ground with traditional oil production method by the oil gas product of high-quality.
There are the Convective Heating technology of Institutes Of Technology Of Taiyuan, the technique using the converted in-situ technology of fluid convection heating method
Basic step be: first in the multiple vertical shafts of ground configuration, which is pierced to the oil shale ore bed that will be exploited, then
Oil shale mine lamination is split using the gang of wells, makes what extending in the horizontal direction occurred in the oil shale ore bed to be exploited huge to split
Line makes the wellbore whole connection for being in oil shale ore bed position gang of wells, then uses producing well and the interval rotation of heat injection well, will
Superheated steam of the temperature within the scope of 400 DEG C~700 DEG C injects the oil shale ore bed of pressure break along heat injection well, adds it sufficiently
Heat forms oil gas, and carries from lines of producing wells to ground through Low Temperature Steam or condensed water after the kerogen pyrolysis in oil shale ore bed
Face.
Equally, the Crush technology for avenging teflon also takes fluid convection heating method, and the technology is firstly the need of to rammell
Row explosion pressure break, utilizes high temperature CO2Oil shale layer is heated, and the products such as oil gas are exported by vertical well.Take spoke
The technology for penetrating heating method mainly has: U.S. Illinois Polytechnics and Lao Lunsili Wu Mo National Laboratory propose and develop
LLNL radio-frequency technique is heated using improved less radio-frequency heating method to oil shale, has penetration power strong, is easy control
System, shortens the time of thermal diffusion；The RF/CF technology of Ray Thcon is that another utilizes radio-frequency technique heating, supercritical fluid
Make carrier, the technology heated to oil shale layer.RF transmitter is arranged in oil shale formation first, to oil shale into
Row heating, then by supercritical CO2It is injected into mining rock stratum, the gas that oil shale pyrolysis generates is dispersed to producing well.?
Ground is by CO2Gas separation continues to be injected back into well, while oil shale pyrolysis is generated oil and gas and is extracted.Chinese patent
CN201520114231.5, a kind of well oil rammell combustion heating system describe a kind of using in closed combustion chamber
The method of interior combustion heating, it is equipped with the combustion chamber of a sealing in shaft bottom, and combustion chamber is equipped with air inlet duct, fuel inputs
Pipe, exhaust output tube, waste water efferent duct are passed through air and fuel to intracavitary, and light intracavitary, the high-temperature tail gas for generation of burning
It is discharged through exhaust output tube, heat-exchange tube is additionally provided with around exhaust output tube, pipe is provided with heat-absorbing medium, keeps exhaust gas cooling, gives up
Water vapor condensation Cheng Shui in gas, water are exported through waste water efferent duct to a certain extent；Whole device is by the combustion chamber pair that seals
Underground oil gas heated and exhaust output tube around heat-exchange tube in heat-absorbing medium underground oil gas is heated.
To sum up, in fluid convection heating technique, mainly using heating vapor or CO on ground2After gas, input exploitation
Area, thermal loss are big.Another kind is in underground closed combustion heating mode, and structure is complicated is difficult to realize, while there is also thermal effects
The low problem of rate.
Summary of the invention
The object of the present invention is in order to solve during exploiting oil shale, heavy oil fluid using fluid convection heating technique,
The problem that thermal loss is big, utilization rate is low, at high cost, and a kind of open burning convective in the underground that heating efficiency is high, safe is provided
Heating means.
Underground opens burning convective heating means, it includes:
1) pressure-air is injected into heated well well set；
2) combustion gas and combustion-supporting gas are sent into well set through pipeline respectively, at mining area, are burnt in the burner after mixing；
3) heat that burner combustion generates pressure-air for injecting into well set, and the exhaust gas generated with burning with
Air mixing, forms Hybrid Heating medium；
4) oil gas is formed after the kerogen pyrolysis in heavy oil or oil shale ore bed, Hybrid Heating medium is discharged from producing well；
Also in the lower section of burner in the step 1), fire-retardant fluid is injected through pipeline；
The fire-retardant fluid is CO2Gas, vapor or water.
Another object of the present invention is that the underground to realize the open burning convective heating means in underground and specially designing is open
Burning convective heating device.
Underground opens burning convective heating device, comprising: well set note air hose 102, combustion-supporting gas delivery pipe 101, combustion gas are defeated
Send pipe 3, igniter 4, burner 103；
Combustion-supporting gas delivery pipe 101 and gas supply pipe 3 are connected with burner 103, and burner 103 is located in well set 201,
At mining area；
The open burning convective heating device in the underground, further includes: temperature monitoring device 5, air pressure monitoring device 7, stream
Measure monitoring device 8, central controller 6；
The open burning convective heating device in the underground further include: fire-retardant fluid delivery tube 9, outlet are located at burner
103 position or below；
The 9 well upper section of fire-retardant fluid delivery tube is connected with combustion-supporting gas delivery pipe 101, well set note air hose 102, and
It is respectively equipped with communicating valve.
In use, opening well set note air hose 102, combustion-supporting gas delivery pipe 101,3 valve of gas supply pipe, starting ignition dress
4 are set, combustion gas and combustion-supporting gas mix in the burner, and igniter 4 lights mixed gas, burning, and heated well covers interior well set note
The pressure-air that air hose 102 injects, pressure-air are mixed with the vapor of burning generation and other exhaust gas, are generated Hybrid Heating and are situated between
Matter enters oil-producing region or the heating of oil shale pressure break gap, is formed after the kerogen pyrolysis in heat diffusion heavy oil or oil shale ore bed
Oil gas, Hybrid Heating medium are discharged from production wellhead；
As heat medium, while in the flame for also having blocked burner to generate and mining area, combustible gas connects pressure-air
Touching, the CO that fire-retardant fluid delivery tube 9 conveys2Gas or water can reconcile various gas compositions in above-mentioned mixed gas, more may be used
It leans on, ensure that burner 103 is run in downhole safety.If accident occurs for underground, gas supply pipe 3, combustion-supporting gas can be closed
The valve of delivery pipe 101, well set note air hose 102 opens communicating valve, combustion-supporting gas delivery pipe 101 and well set note air hose 102 to well
Lower conveying CO2Gas.According to the data of temperature monitoring device 5, air pressure monitoring device 7 and flow monitoring device 8, central controller
The injection rate of the 6 various gases of adjustment, to adapt to the various complex environments of mining area, is opened with changing the component of Hybrid Heating medium
Dynamic emergency plan.
The present invention provides the open burning convective heating means in underground, it includes: 1) to inject pressure-air into well set；2)
Combustion gas and combustion-supporting gas are sent into the closely lower exit of well set through pipeline respectively, burnt in the burner after mixing, 3) burner combustion
The heat air generated is burnt, while the exhaust gas for generation of burning mixes with air；Also in burner in the step 1)
Fire-retardant fluid is injected through pipeline in lower section；The fire-retardant fluid is CO2Gas, vapor or water.The present invention also provides undergrounds
Open burning convective heating device, comprising: the open burning convective heating device in underground, comprising: well set note air hose 102, combustion-supporting gas
Body delivery pipe 101, gas supply pipe 3, igniter 4, burner 103, fire-retardant fluid delivery tube 9；Fire-retardant fluid delivery tube 9 its
Outlet is located at the position or below of burner 103；The 9 well upper section of fire-retardant fluid delivery tube and combustion-supporting gas delivery pipe
101, well set note air hose 102 is connected, and is respectively equipped with communicating valve.
Burner is located at underground, and flame is isolated in open burning, pressure-air, generates Hybrid Heating medium, heat source with added
Hot substance directly contacts, and the process of heat exchange is omitted, and reduces thermal loss, the pressure-air that well set note air hose 102 is passed through
Both be used as heat medium, pressure-air as heat medium, while also blocked burner generation flame and mining area in can
The contact of combustion gas, CO is inputted around burner 1032Gas or water play protective effect, more securely and reliably.Combustion-supporting gas
Body delivery pipe 101, well set note air hose 102,9 intercommunication of fire-retardant fluid delivery tube can realize CO2The conversion of gas and pressure-air,
When unexpected, high air pressure passages are all converted to CO2Gas passage.More one of safety curtain.
Detailed description of the invention
Fig. 1 is the structure chart for inventing the open burning convective heating device in underground；
Fig. 2 is the usage state diagram for inventing the open burning convective heating device in underground；
Fig. 3 is the structure chart for inventing another embodiment of the open burning convective heating device in underground.
Specific embodiment
1 underground of embodiment opens burning convective heating means
Underground opens burning convective heating means, it includes:
1) pressure-air is injected into heated well well set；
2) combustion gas and combustion-supporting gas are sent into well set through pipeline respectively, at mining area, are burnt in the burner after mixing；
3) heat that burner combustion generates pressure-air for injecting into well set, and the exhaust gas generated with burning with
Air mixing, forms Hybrid Heating medium；
4) oil gas is formed after the kerogen pyrolysis in heavy oil or oil shale ore bed, Hybrid Heating medium is discharged from producing well；
Also in the lower section of burner in the step 1), fire-retardant fluid is injected through pipeline；
The fire-retardant fluid is CO2Gas, vapor or water.
2 underground of embodiment opens burning convective heating device
Underground opens burning convective heating device, comprising: well set note air hose 102, combustion-supporting gas delivery pipe 101, combustion gas are defeated
Send pipe 3, igniter 4, burner 103；
Combustion-supporting gas delivery pipe 101 and gas supply pipe 3 are connected with burner 103, and burner 103 is located in well set 201,
At mining area；
The open burning convective heating device in the underground, further includes: temperature monitoring device 5, air pressure monitoring device 7, stream
Measure monitoring device 8, central controller 6.
3 underground of embodiment opens burning convective heating device
Underground opens burning convective heating device, comprising: well set note air hose 102, combustion-supporting gas delivery pipe 101, combustion gas are defeated
Send pipe 3, igniter 4, burner 103；
Combustion-supporting gas delivery pipe 101 and gas supply pipe 3 are connected with burner 103, and burner 103 is located in well set 201,
At mining area；
The open burning convective heating device in the underground, further includes: temperature monitoring device 5, air pressure monitoring device 7, stream
Measure monitoring device 8, central controller 6；
The open burning convective heating device in the underground further include: fire-retardant fluid delivery tube 9, outlet are located at burner
103 position or below；
The 9 well upper section of fire-retardant fluid delivery tube is connected with combustion-supporting gas delivery pipe 101, well set note air hose 102, and
It is respectively equipped with communicating valve.
In use, opening well set note air hose 102, combustion-supporting gas delivery pipe 101,3 valve of gas supply pipe, starting ignition dress
4 are set, combustion gas and combustion-supporting gas mix in the burner, and igniter 4 lights mixed gas, burning, and heated well covers interior well set note
The pressure-air that air hose 102 injects, pressure-air are mixed with the vapor of burning generation and other exhaust gas, are generated Hybrid Heating and are situated between
Matter enters oil-producing region or the heating of oil shale pressure break gap, is formed after the kerogen pyrolysis in heat diffusion heavy oil or oil shale ore bed
Oil gas, Hybrid Heating medium are discharged from production wellhead；
As heat medium, while in the flame for also having blocked burner to generate and mining area, combustible gas connects pressure-air
Touching, the CO that fire-retardant fluid delivery tube 9 conveys2Gas or water can reconcile various gas compositions in above-mentioned mixed gas, more may be used
It leans on, ensure that burner 103 is run in downhole safety.If accident occurs for underground, gas supply pipe 3, combustion-supporting gas can be closed
The valve of delivery pipe 101, well set note air hose 102 opens communicating valve, combustion-supporting gas delivery pipe 101 and well set note air hose 102 to well
Lower conveying CO2Gas.According to the data of temperature monitoring device 5, air pressure monitoring device 7 and flow monitoring device 8, central controller
The injection rate of the 6 various gases of adjustment, to adapt to the various complex environments of mining area, is opened with changing the component of Hybrid Heating medium
Dynamic emergency plan.
Claims (7)
1. underground opens burning convective heating means, it includes:
1) pressure-air is injected into heated well well set；
2) combustion gas and combustion-supporting gas are sent into well set through pipeline respectively, at mining area, are burnt in the burner after mixing；
3) pressure-air that the heat that burner combustion generates is injected into well set, and the exhaust gas and air generated with burning
Mixing forms Hybrid Heating medium；
4) oil gas is formed after the kerogen pyrolysis in heavy oil or oil shale ore bed, Hybrid Heating medium is discharged from producing well.
2. the open burning convective heating means in underground according to claim 1, it is characterised in that: in the step 1) also
In the lower section of burner, fire-retardant fluid is injected through pipeline.
3. the open burning convective heating means in underground according to claim 2, it is characterised in that: the fire-retardant fluid
For CO2Gas, vapor or water.
4. underground opens burning convective heating device, which is characterized in that it includes: well set note air hose (102), combustion-supporting gas conveying
Manage (101), gas supply pipe (3), igniter (4), burner (103)；Combustion-supporting gas delivery pipe (101) and gas supply pipe
(3) it is connected with burner (103), burner (103) is located in well set (201), at mining area；Side according to claim 1
Method operation.
5. the open burning convective heating device in underground according to claim 4, which is characterized in that it further include: fire-retardant stream
Body delivery pipe (9), outlet are located at the position or below of burner (103).
6. the open burning convective heating device in underground according to claim 5, which is characterized in that the fire-retardant fluid is defeated
It send pipe (9) well upper section to be connected with combustion-supporting gas delivery pipe (101), well set note air hose (102), and is respectively equipped with communicating valve.
7. the open burning convective heating device in underground according to claim 6, which is characterized in that further include: temperature prison
Survey device (5), air pressure monitoring device (7), flow monitoring device (8), central controller (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610324511.8A CN105840162B (en) | 2016-05-17 | 2016-05-17 | Underground combustion Convective Heating method |
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| CN201610324511.8A CN105840162B (en) | 2016-05-17 | 2016-05-17 | Underground combustion Convective Heating method |
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| CN105840162B true CN105840162B (en) | 2019-09-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119097A (en) * | 2016-11-29 | 2018-06-05 | 中国石油天然气股份有限公司 | Pumping and washing process and well washing system |
| CN109707356B (en) * | 2019-02-02 | 2023-04-25 | 吉林大学 | Underground ignition heating device and method for oil shale in-situ exploitation |
| CN110043235A (en) * | 2019-05-23 | 2019-07-23 | 西南石油大学 | A kind of thick oil filling vaporization method burnt using underground supercritical water |
| CN110259424B (en) * | 2019-07-17 | 2020-07-28 | 中国石油大学(北京) | Method and device for extracting oil shale in situ |
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| US6269882B1 (en) * | 1995-12-27 | 2001-08-07 | Shell Oil Company | Method for ignition of flameless combustor |
| CN1507528A (en) * | 2001-04-24 | 2004-06-23 | ���ʿ����о�����˾ | In-situ combustion for oil recovery |
| CN201347746Y (en) * | 2008-11-28 | 2009-11-18 | 北京新天绿城节能环保科技有限公司 | Downhole heat tracing device |
| CN204457711U (en) * | 2015-02-17 | 2015-07-08 | 吉林大学 | A kind of OIH rammell combustion heating system |
| CN205100960U (en) * | 2015-11-06 | 2016-03-23 | 东营天华石油技术开发有限公司 | Coiled tubing is many first hot -fluid burner in pit |
| CN205714144U (en) * | 2016-05-17 | 2016-11-23 | 赵金岷 | Underground combustion convection heating system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425399B (en) * | 2011-12-29 | 2015-06-10 | 新奥气化采煤有限公司 | Method for exploiting oil shale |
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2016
- 2016-05-17 CN CN201610324511.8A patent/CN105840162B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6269882B1 (en) * | 1995-12-27 | 2001-08-07 | Shell Oil Company | Method for ignition of flameless combustor |
| CN1507528A (en) * | 2001-04-24 | 2004-06-23 | ���ʿ����о�����˾ | In-situ combustion for oil recovery |
| CN201347746Y (en) * | 2008-11-28 | 2009-11-18 | 北京新天绿城节能环保科技有限公司 | Downhole heat tracing device |
| CN204457711U (en) * | 2015-02-17 | 2015-07-08 | 吉林大学 | A kind of OIH rammell combustion heating system |
| CN205100960U (en) * | 2015-11-06 | 2016-03-23 | 东营天华石油技术开发有限公司 | Coiled tubing is many first hot -fluid burner in pit |
| CN205714144U (en) * | 2016-05-17 | 2016-11-23 | 赵金岷 | Underground combustion convection heating system |
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