CN201236672Y - Gas generator for petroleum thermal production - Google Patents
Gas generator for petroleum thermal production Download PDFInfo
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- CN201236672Y CN201236672Y CNU2008201350784U CN200820135078U CN201236672Y CN 201236672 Y CN201236672 Y CN 201236672Y CN U2008201350784 U CNU2008201350784 U CN U2008201350784U CN 200820135078 U CN200820135078 U CN 200820135078U CN 201236672 Y CN201236672 Y CN 201236672Y
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- gas generator
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- oil
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Abstract
The utility model provides a combustion pot which is used for a thermal production gas injection device and suitable for increasing the oil recovery ratio. The combustion pot comprises a cylinder block, a combustion chamber at the upper part of the cylinder block, a mixing chamber at the lower part of the cylinder block, a straight injection pore injection nozzle, an igniter, a porous air distribution plate and a cooling water tank inside a cylinder sleeve; gas fuel or liquid fuel can be burnt in the combustion pot; and cooling water after being mixed with high temperature gas from the combustion chamber in the mixing chamber and vaporized is injected into an oil well. The cylinder-type combustion pot is mainly used for petroleum thermal recovery gas injection, and also can be used for paraffin removal or pipeline cleaning at an oil well or a gas well. Because the cylinder-type combustion pot can use various gas fuel or liquid fuel, and has the advantages of small size, light weight, flexibility and convenient use, the utility model has a good applicable prospect in the thermal recovery of petroleum, and in particular can be applied to an offshore platform which has rigorous weight requirements.
Description
Technical field:
The utility model relates to the gas generator that a kind of thermal recovery gas injection that improves oil recovery is used.
Background technology:
Chinese patent application 99223200 discloses a kind of oil-field thick-oil thermal recovery gas and vapour generator, and it has adopted combustion chamber, vaporizer and jet pipe structure, and the flue gas of oil inflame also can utilize, and has not only improved heat energy utilization rate but also free from environmental pollution.
Existing petroleum thermal recovery generally is to utilize steam heating boiler to produce steam to inject the down-hole, and this mode equipment is huge, energy consumption is high, efficient is low, exhaust emission is big.Adopt fuel mostly to be liquid fuel, can't guarantee that fuel can both fully burn under different oil well pressures, it is single to add fuel, and fuel cost is higher, is difficult to large-scale application.
Constantly surging along with oil price, the cry that improves oil recovery is very strong, be badly in need of the thermal recovery gas injection technology of a kind of high efficiency, low running cost raising oil recovery factor, the gas generator of particularly being badly in need of a kind of suitable use pluralities of fuel substitutes present steam heating boiler.
Summary of the invention:
The air-cylinder type gas generator that the utility model provides a kind of thermal recovery gas injection that is suitable for improving oil recovery to use, solve present thermal recovery gas injection device efficient low, use problems such as fuel is single.
This gas generator can adopt multifuel diesel cylinder principle and frame mode, and the cancellation piston becomes the continuous burning mode, produces combustion gas continuously and injects oil well.This gas generator adopts straight spray fine noz(zle) and porous compressed air distribution plate, can make the air that contracts evenly enter in the cylinder, guarantee that the flame after fuel under the different oil well pressures and burning is in the cylinder axis position all the time, just change the length of flame, do not have fuel to be directed onto in the cylinder and put, to guarantee fully burning and evenly to spray combustion gas after the blending.
A kind of gas generator for oil thermal production, the loam cake that comprises cylinder block and upper end closed thereof, loam cake is provided with fuel nozzle, compressed air inlet and igniter, external natural gas compressor of fuel nozzle or high-pressure oil pump, cylinder block is made up of the combustion chamber on top and the blending vaporizer of bottom, compressed air inlet is connected with the compressed air distribution plate of combustion chamber, and sidewall of combustion chamber is provided with water inlet, and bottom, combustion chamber sidewall is provided with a plurality of vaporization hole for water sprayings.Vaporization hole for water spraying quantity is determined as required.
The outside, combustion chamber is provided with the combustion gas spout for gas inner cylinder sleeve, cylinder lagging, cylinder bottom.A plurality of pores distribute on the porous compressed air distribution plate, can make compressed air evenly enter in the cylinder, guarantee that the flame after under different pressures fuel and the burning is in the cylinder axis position all the time, by changing the length of compressed-air actuated pressure change flame, do not have fuel to be directed onto in the cylinder and put, to guarantee fully burning and evenly to spray combustion gas after the blending.
The fuel nozzle of gas generator for oil thermal production is straight spray pore nozzle.The also straight spray fine noz(zle) of the fuel nozzle of gas generator for oil thermal production.
Gas generator for oil thermal production, the hole that distributes on its compressed air distribution plate, a plurality of apertures evenly distribute.Little hole number can be at 4-100.The compressed air distribution plate adopts exotic materials such as carborundum, silicon nitride, pottery to make.
Gas generator for oil thermal production, its cylinder block lower end is the combustion gas spout.
Gas generator for oil thermal production is provided with bosh between the overcoat in its combustion chamber.
Combustion chamber and blending vaporizer adopt integral type or adopt bolted mode, and the combustion chamber diameter is 180-200mm, and blending vaporizer diameter is 80-100mm.
The blending bottom of vaporizing chamber is provided with flange and combustion gas spout.
Gas generator for oil thermal production, its cylinder block lower end is the combustion gas spout.The combustion gas jet size is determined according to need of work.
Gas generator for oil thermal production is provided with bosh between the overcoat in it, and bosh reduces the temperature of high-temperature gas from sidewall by the water that adds.
Gas generator for oil thermal production, its fuel are methyl alcohol, ethanol, diesel oil, kerosene, crude oil, natural gas, dimethyl ether, coal bed gas, biogas or coal gas.
Use the method for gas generator for oil thermal production: its fuel enters from straight spray pore nozzle through high-pressure pump, the compressed air intake of compressed air, porous compressed air distribution plate enter, cooling water is the bosh between the overcoat in the cooling water inlet and the cylinder of flowing through, enter cylinder through the vaporization hole for water spraying, mist is through flange and the combustion gas spout is discharged and the injection well head.
This gas generator fuel can be supplied with by high-pressure pump, and fuel pressure exceeds 2-10 times than air supply pressure so that fuel press to change when big still at well can the good and fully burning of spray pattern, be optimal parameter with the gas of guaranteeing to inject the down-hole.
This gas generator adopts multifuel diesel cylinder principle and frame mode, can utilize standard use for diesel engine high-pressure fuel-feed pump to improve the back and use, and can reduce cost under the prerequisite that guarantees reliability.This gas generator can be made the miniaturization product, directly puts into the down-hole, with the further raising thermal efficiency, improves recovery ratio, and other parts such as fuel and air supply are placed on ground.
The air-cylinder type gas generator that thermal recovery gas injection provided by the invention is used is compared with existing steam for thermal recovery of petroleum boiler, the gas that injects the down-hole is not single steam, but the mist of nitrogen, steam and the carbon dioxide of 300 ℃ and above temperature, its gas component ratio changes to some extent when using different fuel, and its ratio is about: nitrogen 40%-55%, steam 30%-50%, carbon dioxide 9%-15%, other gas 1%.
Description of drawings:
Fig. 1 is the gas generator structural representation.
Fig. 2 is the cooling tank structure key diagram
Fig. 3 is the sectional drawing of loam cake A among Fig. 1
Fig. 4 is the sectional drawing of vaporization hole for water spraying B among Fig. 1,
Fig. 5 is the structural representation of compressed air distribution plate C among Fig. 3
Beneficial effect: thermal recovery gas injection gas generator volume is little, in light weight, cost is low, reduced investment, and is simple in structure, The reliability height, maneuverability can skid or vehicle-mounted, and being particularly suitable for has the offshore oil production of strict restriction flat to weight Platform uses. Nitrogen is very strong in the driving effect to the down-hole oil reservoir in the mist; Steam can bring oil reservoir big heat Can, increase oily flowability; Carbon dioxide itself is the good viscosity reduction auxiliary agent that recovers the oil, and can make the down-hole under certain pressure The oil gas mixed phase, thereby improve recovery ratio. Thermal recovery gas injection gas generator has been compared with existing steam for thermal recovery of petroleum boiler Significantly advantage can save energy about 40%, can improve oil recovery factor about 30%.
Concrete enforcement:
As shown in Figure 1: thermal recovery gas injection air-cylinder type gas generator comprises cylinder block 1, directly sprays pore nozzle 2, compressed air inlet 3, porous compressed air distribution plate 4, cooling water inlet 5, igniter 6, loam cake 7, bosh 8, gas inner cylinder sleeve 9, cylinder lagging 10, combustion chamber 11, blending vaporizer 12, vaporization hole for water spraying 13, combustion gas spout 14, flange 15.
Fuel enters from straight spray pore nozzle 2 during work, and the compressed air intake 3 of compressed air, porous compressed air distribution plate 4 enter.Adopt high-pressure pump or fuel natural gas compressor apparatus, make gaseous fuel (methane) or liquid fuel (diesel oil) supply pressure exceed 2-10 times than air supply pressure, so that fuel press to change when big still at well is can spray pattern good and light the back by igniter 6 and fully burn combustion chamber 11 in, be optimal parameter with the gas of guaranteeing to inject the down-hole.Fuel is fully burning in combustion chamber 11, its burning produces the nitrogen of nearly 2000 degree high temperature, carbon dioxide gas mixture, cooling water is the bosh between the overcoat in the cooling water inlet 5 and the cylinder of flowing through, enter cylinder through gasification hole for water spraying 13, after water and high-temperature gas mixture body meet, give the cooling of high-temperature gas mixture body, while water endothermic gasification, the indoor formation of gasification blending 300 degree left sides by nitrogen, the mist that carbon dioxide and water vapour are formed, its temperature can be adjusted by the thermal recovery technology requirement, and the mist that is adjusted into the most suitable thermal recovery requirement temperature injects well head through combustion gas spout 14.
Example 1
As shown in Figure 1: a kind of thermal recovery gas injection air-cylinder type gas generator that is suitable for improving oil recovery comprises cylinder block (1), directly sprays fine noz(zle) 2, compressed air inlet 3, porous compressed air distribution plate 4, cooling water inlet 5, igniter 6, loam cake 7, bosh 8, ceramic gas inner cylinder sleeve 9, cylinder lagging 10, combustion chamber 11, blending vaporizer 12, vaporization hole for water spraying 13, combustion gas spout 14, flange 15.The combustion chamber adopts bolt to be connected with the blending vaporizer.
It is 1mm that gas generator directly sprays the fine noz(zle) outlet diameter, 6 holes that diameter is 2mm of silicon carbide porous compressed air distribution plate distribution, and vaporization hole for water spraying diameter is 2mm.The length ratio of combustion chamber and blending vaporizer is 1:2, and the combustion chamber diameter is 180mm, and blending vaporizer diameter is 100mm.
Methyl alcohol enters from straight spray fine noz(zle) 2 through external high-pressure oil pump during work, and the compressed air intake 3 of compressed air, porous compressed air distribution plate 4 enter.Adopt high-pressure pump equipment, make fuel-supplying pressure exceed 5-7 doubly than air supply pressure, so that fuel press to change when big still at well is can spray pattern good and light the back by igniter 6 and fully burn combustion chamber 11 in, be optimal parameter with the gas of guaranteeing to inject the down-hole.Fuel is fully burning in middle combustion chamber 11, its burning produces the nitrogen of nearly 2000 degree high temperature, carbon dioxide gas mixture, cooling water is the bosh between the overcoat in the cooling water inlet 5 and the cylinder of flowing through, enter cylinder through gasification hole for water spraying 13, after water and high-temperature gas mixture body meet, give the cooling of high-temperature gas mixture body, while water endothermic gasification, the indoor formation of gasification blending 300 degree by nitrogen, the mist that carbon dioxide and water vapour are formed, its temperature can be adjusted by the thermal recovery technology requirement, and the mist that is adjusted into the most suitable thermal recovery requirement temperature is through flange and 14 discharges of combustion gas spout and injection well head.
Example 2 is substantially with example 1
Fuel adopts ethanol to enter through external high-pressure oil pump in this example, and it is 1.5mm that this gas generator directly sprays the fine noz(zle) outlet diameter, 30 holes that diameter is 2mm of silicon nitride porous compressed air distribution plate distribution, and vaporization hole for water spraying diameter is 2mm.The length ratio of combustion chamber and blending vaporizer is 1:2, and the combustion chamber diameter is 180mm, and blending vaporizer diameter is 100mm.
Example 3 is substantially with example 1
Fuel adopts the external natural gas compressor of natural gas via to enter in this example, and it is 1.5mm that this gas generator directly sprays the fine noz(zle) outlet diameter, 60 holes that diameter is 2mm of porous compressed air distribution plate distribution, and vaporization hole for water spraying diameter is 2mm.The length ratio of combustion chamber and blending vaporizer is 1:2, and the combustion chamber diameter is 180mm, and blending vaporizer diameter is 100mm.
Example 4 is substantially with example 1, and fuel adopts diesel oil in this example, 100 holes that diameter is 2mm of porous compressed air distribution plate distribution.
Claims (6)
1, a kind of gas generator for oil thermal production, the loam cake that comprises cylinder block and upper end closed thereof, it is characterized in that loam cake is provided with fuel nozzle, compressed air inlet and igniter, external natural gas compressor of fuel nozzle or high-pressure oil pump, cylinder block is made up of the combustion chamber on top and the vaporizer of bottom, compressed air inlet is connected with the compressed air distribution plate of upper end, combustion chamber, and sidewall of combustion chamber is provided with water inlet, puts in the cylinder block vaporization hole for water spraying is set.
2, a kind of gas generator for oil thermal production as claimed in claim 1 is characterized in that described fuel nozzle is straight spray pore nozzle.
3, a kind of gas generator for oil thermal production as claimed in claim 1, the hole that it is characterized in that described compressed air distribution plate is for evenly distributing.
4, a kind of gas generator for oil thermal production as claimed in claim 1 is characterized in that described vaporization hole for water spraying is positioned at the bottom, combustion chamber.
5, a kind of gas generator for oil thermal production as claimed in claim 1 is characterized in that described cylinder block lower end is the combustion gas spout.
6, a kind of gas generator for oil thermal production as claimed in claim 1 is characterized in that being provided with bosh between the interior overcoat of described cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201350784U CN201236672Y (en) | 2008-08-29 | 2008-08-29 | Gas generator for petroleum thermal production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201350784U CN201236672Y (en) | 2008-08-29 | 2008-08-29 | Gas generator for petroleum thermal production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236672Y true CN201236672Y (en) | 2009-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201350784U Expired - Fee Related CN201236672Y (en) | 2008-08-29 | 2008-08-29 | Gas generator for petroleum thermal production |
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| Country | Link |
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| CN (1) | CN201236672Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577922A (en) * | 2018-11-29 | 2019-04-05 | 山西易高煤层气有限公司 | A kind of method of coal-bed-gas production-increase |
-
2008
- 2008-08-29 CN CNU2008201350784U patent/CN201236672Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577922A (en) * | 2018-11-29 | 2019-04-05 | 山西易高煤层气有限公司 | A kind of method of coal-bed-gas production-increase |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20100829 |