CN201386540Y - Gas generator for wax removal and well cleanout of oilwell - Google Patents
Gas generator for wax removal and well cleanout of oilwell Download PDFInfo
- Publication number
- CN201386540Y CN201386540Y CN200920148097U CN200920148097U CN201386540Y CN 201386540 Y CN201386540 Y CN 201386540Y CN 200920148097 U CN200920148097 U CN 200920148097U CN 200920148097 U CN200920148097 U CN 200920148097U CN 201386540 Y CN201386540 Y CN 201386540Y
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- gas generator
- cooling water
- inlet
- wax removal
- gas
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- Expired - Fee Related
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Abstract
The utility model provides a gas generator for wax removal and well cleanout of an oilwell. The gas generator comprises an internal combustion cylinder block, an igniter, an air inlet, a fuel inlet, a cooling water tank, a cooling water inlet, a cooling water outlet, a vapourization spout hole and a fuel gas spout. The gas generator is characterized in that the fuel inlet, the air inlet are formed and the igniter is arranged at the upper end of the internal combustion cylinder block; the cylinder block is provided with a combustion chamber at the upper part and a vapourization chamber at the lower part; a vapourization spout hole is formed on the side wall of the vapourization chamber; the cooling water is arranged outside the combustion pot; and the cooling water inlet and the cooling water outlet are formed on the cooling water tank. Since the utility model adopts high-temperature gas heat carrier, compared with the prior mechanical wax removal and boiler thermal wax removal, the device has remarkable advantages and helps to improve the recovery efficiency. In addition, the utility model has the advantages of low manufacturing cost, small size, light weight, flexibility and convenience, and has good application prospect in oilwell wax removal.
Description
Technical field:
The utility model provides a kind of gas generator of removing wax deposition in the oil recovery well casing.
Background technology:
In the oil exploitation process, in the oil recovery well casing often wax deposition, pipe aperture is tapered, influence oil yield efficiency, make the reduction of well output of fluid and oil production rate simultaneously.Existing wax removal technology mainly is to adopt mechanical paraffin removal and heating power wax removal, and mechanical paraffin removal is not thoroughly and influence oil well output; The heating power wax removal is generally brought heat energy into pit shaft with Boiler Steam and hot water, improves temperature in wellbore, makes its fusing point that surpasses wax, thereby wax is dissolved reach the purpose of wax removal.Utilize boiler to produce steam and hot water injection down-hole, its shortcoming is that the thermal efficiency is low, and the flushing fluid of usefulness is many, may damage the sensitiveness oil reservoir; This mode equipment is big, energy consumption is high, efficient is low, exhaust emission is arranged; The oil well task difficulty higher for the well pressure ratio is big; The difficulty of the high oil well of the content of wax and its wax removal of heavy oil wells being washed dirt work is bigger.
Along with the shortage of oil, be badly in need of a kind of high efficiency, low running cost, do not injure the removing paraffin and washing well equipment of oil reservoir.
The utility model content:
The utility model provides a kind of gas generator that is used for the paraffin removal from oil well well-flushing, for wax removal, the well-flushing of oil well, wash operations such as dirt, de-plugging, pipeline purging heat transfer medium is provided.
This gas generator comprises internal combustion cylinder body, igniter, air intlet, fuel inlet, cooling device, gasification hole for water spraying, combustion gas spout.Gas generator internal combustion cylinder body upper end is provided with fuel inlet, air intake and igniter, and gas generator is provided with cooling water equipment outward, and cooling water inlet and outlet are set on the cooling device.Cylinder block is made up of the combustion chamber on top and the vaporizer of bottom, and the vaporizer sidewall is provided with the vaporization hole for water spraying.
Cooling device adopts the frame mode of fixed jacket bosh or cooling water tank.
The vaporization hole for water spraying is positioned at the vaporizer bilateral and is oppositely arranged, and sprays to combustion gas at a certain angle, and vaporization hole for water spraying and gas-flow are the 30-60 degree to angle.The external high-pressure hydraulic pump of gasification hole for water spraying.
Air and fuel inlet are double-layer sleeve structure, and fuel enters from the center, the hybrid mode that air enters from outer ring-type inlet.Fuel inlet is interior, and the compressed air inlet is at skin.
Combustion chamber of this gas generator and vaporizer adopt the integral structure mode, and the combustion chamber diameter is 50-120mm, and blending vaporizer diameter is 50-100mm.
This gas generator can burning diesel oil and the association natural gas that produces of oil well, vaporize water with the burning after high-temperature gas mixes and vaporize formation gas heat carrier, discharge the injection oil sets annular space through the combustion gas spout, heat transfer medium is discharged from oil pipe by oil well pump together with the well liquid of output, the wax deposition of heating tube inner wall, be heated inside and outside the oil pipe, wax deposition and dirt are melted, and reach wax removal and wash dirty purpose.The method can be while pumping wax removal, do not influence oil well ordinary production and other operations.
This gas generator characteristics are: by external control system control air compressor, high-pressure injection pump or natural gas compressor air supply and fuel, the control high-pressure hydraulic pump is supplied with vaporize water, guarantees that the gas of this gas generator operate as normal and injection down-hole is optimum state.This gas generator be mainly used in producing well wax removal, wash clean-out service such as dirt, also be suitable for improving the use of oil recovery and exploitation viscous crude, high waxy oil well.
This gas generator can fuel oil, the associated gas of the oil well that also can burn, and the utilization of the natural gas in oil well half a lifetime not only can be saved operating cost, and can reduce the discharging of greenhouse gases.
The gas heat carrier temperature of this gas generator can be pressed the removing paraffin and washing well technological requirement and be set or adjust between 120 ℃-300 ℃, the injection pressure of gas heat carrier can be pressed with well and be changed, and regulates automatically from 0-25MPa.
Beneficial effect:
The high-temperature gas removing paraffin and washing well gas generator that the utility model provides has been compared remarkable advantages with the existing machinery wax removal with the boiler heating power wax removal, does not influence oil well ordinary production and other operations.This gas generator can also combine with the clear anti-wax technique of chemistry, and employed chemical agent is dissolved in the vaporize water, together injects the down-hole through oil sets annular space with the high-temperature gas mixture body, improves clear wax control result.
Because this gas generator adopts the high-temperature gas heat transfer medium, not only oil reservoir is not had injury, and helps improving recovery ratio.This gas generator can burning diesel oil and the direct association natural gas of burning oil well generation, environmental protection and energy saving, and running cost is low, fuel source is convenient.This combustion gas body generator adopts overcoat cooling water tank frame mode, and fabricating cost is low, good cooling results.Device volume is little, in light weight, flexible, and existing machinery wax removal and boiler heating power wax removal can save energy more than 30%, raise the efficiency more than one times.Aspect paraffin removal from oil well, good application prospects is arranged.
The removing paraffin and washing well gas generator reliability height that the utility model provides can skid or vehicle-mounted.
The wax removal gas generator that the utility model provides is compared with existing well-flushing boiler, the gas that injects the down-hole is not single steam, more not hot water, but the mist of the nitrogen of high temperature, steam and carbon dioxide, its ratio is about: nitrogen 30-50%, steam 30%-60%, carbon dioxide 5%-10%.Because the mass dryness fraction of high-temperature gas is greater than 1, to the wax deposition on the oil well tube wall and dirt heating and flushing; Steam can bring oil pipe big heat energy, quickens to be heated inside and outside the oil pipe, and wax deposition and dirt are melted fast, thereby improves wax removal, wash dirty efficient.
Description of drawings:
Fig. 1, gas generator schematic diagram
The structural representation of Fig. 2, gas generator
The specific embodiment:
Example 1: describe in conjunction with Fig. 1-2.
Fig. 1, Fig. 2 are this gas generator schematic diagram and structural representation, this gas generator comprises, internal combustion cylinder body 1, igniter 2, air intlet 5, fuel inlet 4, cooling water tank 6, cooling water inlet 7, coolant outlet 8, gasification hole for water spraying 10, combustion gas spout 9.
Control air compressor by air intlet 5 air supplies by external control system during work, high-pressure injection pump or natural gas compressor are supplied with fuel with fuel inlet 4, high-pressure hydraulic pump is supplied with vaporize water from gasification hole for water spraying 10, cooling water pump carries out outer circulation by the cooling water in cooling water inlet 7 and 8 pairs of cooling water tanks 6 of coolant outlet, the gas heat carrier of guaranteeing this gas generator operate as normal and injection down-hole is an optimum state, light the fuel gas that has mixed in the internal combustion cylinder body 1 by igniter 2, generation reaches the nitrogen of 2000 ℃ of high temperature, the carbon dioxide high-temperature gas, vaporize water injects vaporizer from vaporization hole for water spraying 10, mix and endothermic gasification with the high-temperature gas after the burning, inject oil sets annular space by combustion gas spout 9, heat transfer medium is discharged from oil pipe by oil well pump together with the well liquid of output, the wax deposition and the high-melting-point dirt of heating and flushing oil inside pipe wall, be heated inside and outside the oil pipe, wax deposition and dirt are melted, fade away, reach the purpose that wax removal is washed dirt.Can wash while taking out, not influence oil well ordinary production and other operations.
Double-layer sleeve structure is adopted with fuel inlet 4 in this gas generator compressed air inlet 5, fuel inlet is interior, the compressed air inlet is at skin, so that air mixes with fuel, the fuel port diameter is (natural gas) 3mm, the compressed air inlet diameter is the annular distance of 18 * 2mm, and the vaporization hole for water spraying is 2 * 1mm.The length ratio of combustion chamber and vaporizer is 3: 1, and the combustion chamber diameter is 100mm, and blending vaporizer diameter is 80mm.The temperature of gas heat carrier is set in 200 ℃ by the removing paraffin and washing well technological requirement, and the injection pressure of gas heat carrier is pressed with well and changed, and regulates automatically from 0-25MPa, and vaporization hole for water spraying and gas-flow are 40 degree to angle.
Claims (4)
1. a removing paraffin and washing well gas generator comprises internal combustion cylinder body, igniter, air intlet, fuel inlet, cooling device, vaporization hole for water spraying, combustion gas spout; It is characterized in that described internal combustion cylinder body upper end is provided with fuel inlet, air intake and igniter, gas generator is provided with cooling device outward, cooling device is provided with cooling water inlet and outlet, cylinder block is made up of the combustion chamber on top and the vaporizer of bottom, and the vaporizer sidewall is provided with the vaporization hole for water spraying.
2. removing paraffin and washing well gas generator as claimed in claim 1 is characterized in that described vaporization hole for water spraying is arranged at the vaporizer bilateral and is oppositely arranged, with gas-flow be the 30-60 degree to angle, gasification hole for water spraying external high-pressure hydraulic pump.
3. removing paraffin and washing well gas generator as claimed in claim 1 is characterized in that described cooling device is fixed jacket bosh or cooling water tank.
4. removing paraffin and washing well gas generator as claimed in claim 1 is characterized in that described air and fuel inlet are double-layer sleeve structure, and described fuel inlet is interior, and the compressed air inlet is at skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920148097U CN201386540Y (en) | 2009-04-09 | 2009-04-09 | Gas generator for wax removal and well cleanout of oilwell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920148097U CN201386540Y (en) | 2009-04-09 | 2009-04-09 | Gas generator for wax removal and well cleanout of oilwell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386540Y true CN201386540Y (en) | 2010-01-20 |
Family
ID=41579073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920148097U Expired - Fee Related CN201386540Y (en) | 2009-04-09 | 2009-04-09 | Gas generator for wax removal and well cleanout of oilwell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386540Y (en) |
-
2009
- 2009-04-09 CN CN200920148097U patent/CN201386540Y/en not_active Expired - Fee Related
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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: 20100120 Termination date: 20120409 |