CN202117650U - Oil-gas mixed convey liquid reinjection system - Google Patents
Oil-gas mixed convey liquid reinjection system Download PDFInfo
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- CN202117650U CN202117650U CN 201120163100 CN201120163100U CN202117650U CN 202117650 U CN202117650 U CN 202117650U CN 201120163100 CN201120163100 CN 201120163100 CN 201120163100 U CN201120163100 U CN 201120163100U CN 202117650 U CN202117650 U CN 202117650U
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Abstract
Provided is an oil-gas mixed convey liquid reinjection system, which aims to overcome the disadvantages of the prior art that reinjection liquid volume cannot meet demand and a reflux apparatus is easy to be damaged. An oil-gas mixture pump, a mixture pump output pipeline, a separating device input pipeline, a separating device, a liquid storage tank, a reinjection pipeline, a mixture pump input pipeline are connected in order. The upper end cover of the separating device is fixedly disposed at the upper end of a tank body. A gas-liquid separation umbrella in the shape of a funnel is vertically disposed in the middle of the tank body, and the big end of the gas-liquid separation umbrella is fixedly connected to the tank body. The separating device input pipeline enters from the side face of the tank body, and is communicated with the upper end of the gas-liquid separation umbrella. The gas-liquid output port of the tank body is disposed in the upper portion of the gas-liquid separation umbrella. The oil-gas mixed convey liquid reinjection system is advantageous in that the structure is reasonable, and the operation is easy; adequate liquid volume can be provided, ensuring a normal running of the oil-gas mixed convey device; service lifetime of the device is prolonged, and investment cost and non-production cost are reduced.
Description
Technical field
The utility model relates to a kind of oil and gas multiphase flow system of oil and gas development, especially relates to a kind of oil and gas multiphase flow liquid re-injection system.
Background technology
Along with the continuous research and development of oil and gas multiphase flow technology with equipment, the oil and gas multiphase flow technology is applied.Employing oil and gas multiphase flow technology can reduce wellhead back pressure, improves oil recovery amount, reduces capital investment.
Traditional gas-liquid two-phase piece-rate system is overlapped independently the gas-liquid delivery pipe line by eliminator, oil transfer pump, air compressor machine and two and is formed, and its system constitutes complicated, and capital investment is big, and the management maintenance expense is high.
The oil and gas multiphase flow system compares with traditional gas-liquid two-phase piece-rate system, and the most significant advantage is that it is simple in structure; Easy to operate, the multi-phase mixed delivering system has reduced complicated eliminator, oil transfer pump; Air compressor machine and two overlaps independently gas-liquid delivery pipe line; Reduce cost of investment, simultaneously, also reduced overhead cost.Use the oil and gas multiphase flow system, can reduce well head pressure, improve the multiphase medium flow velocity, productivity gain can prolong the life-span of using the oil well of exploitation simultaneously, thereby obtains high economic benefit.
In oil and gas multiphase flow systematic research field, the most representative product is an oil-gas mixed delivery pump.Oil-gas mixed delivery pump is a kind of rotary volume pump, has the performance of pump and compressor concurrently, can be used for carrying void fraction＜98%, and the short time void fraction is undressed gassiness, wet crude in 100% scope.But gas content is too high in the mixture of carrying, and cavitation erosion, gas lock can occur, and phenomenons such as commentaries on classics, temperature rising or discharge capacity minimizing are done in mechanical seal, has a strong impact on the operate as normal of oil-gas mixed delivery pump.
Mix the high harmful effect that produces of air content in the communication system in order to reduce; Between the exhaust chamber of oil-gas mixed delivery pump and admission chamber, reflux (referring to Fig. 1) is set, its principle is to utilize the density variation of great disparity between gas and the liquid, and the reflux 33 that the liquid that is deposited on exhaust chamber 31 bottoms is passed through gets into imbibition chambeies 32; Reduce the void fraction of imbibition end; It is lubricated to improve mechanical seal, absorbs the heat that seal friction produces, thereby reduces system temperature.Deficiency below this method exists: at first,, when the medium of carrying is high gassiness for a long time, can not supply the void fraction that enough liquid reduces the imbibition end in the pump because the volume restrictions of pump storage liquid measure is few; Secondly, reflux is inner at the pump housing, and its processing and installation be difficulty very, and damages easily at long-time high pressure washing refluxed device, and the life-span is low, and separator damages and is difficult for coming to light.
The utility model content
For the re-injection liquid measure that overcomes the existence of existing oil and gas multiphase flow system can not be satisfied the demand, the flimsy deficiency of reflux, the utility model provides a kind of oil and gas multiphase flow liquid re-injection system.
The utility model solves the technical scheme that its technical problem adopted: the oil-gas mixed delivery pump of oil and gas multiphase flow liquid re-injection system, mixed defeated pumping-out line, separator intake pipeline, separator, fluid reservoir, re-injection pipeline, mixed defeated pump intake pipeline are communicated with successively.Separator comprises tank body, upper end cover, gas-liquid separation umbrella; Upper end cover is fixedly mounted on the tank body upper end; The gas-liquid separation umbrella is an infundibulate, and the gas-liquid separation umbrella vertically is installed in the middle part in the tank body, and the big end of gas-liquid separation umbrella is fixedly connected with tank body; The separator intake pipeline is got into by the tank body side of separator, and is communicated with gas-liquid separation umbrella upper end; Gas-liquid delivery outlet on the tank body is positioned at the top of gas-liquid separation umbrella; Be installed with liquid on the tank body and pour into pipe, liquid pours into pipe and is lower than gas-liquid separation umbrella upper end with the tank body link position; The tank body lower end is fixedly connected with the fluid reservoir upper end.Safety valve, delivery gauge, vent valve are installed on the upper end cover of separator; On the pump housing of oil-gas mixed delivery pump temperature pick up is installed; Mix on the defeated pump intake pipeline pressure sensor is installed; Mix on the defeated pumping-out line pressure sensor is installed; The fluid reservoir lower end is equipped with re-injection pipeline, blow-off pipe, and is communicated with respectively; On the re-injection pipeline electromagnetic valve is installed.Temperature pick up, pressure sensor, delivery gauge, electromagnetic valve are connected with automatic control system.
The beneficial effect of the utility model is, and is rational in infrastructure, and easy operating control can provide enough liquid measures, guarantees that oil and gas multiphase flow equipment normally moves, and prolongs service life of equipment, and investment cost is few, reduces nonproductive operating cost.
Description of drawings
Fig. 1 is existing oil and gas multiphase flow system schematic.
Fig. 2 is the utility model oil and gas multiphase flow liquid re-injection system sketch map.
Among the figure: 1. oil-gas mixed delivery pump, 2. mix defeated pump intake pipeline, 3. pressure sensor, 4. temperature pick up, 5. pressure sensor, 6. separator intake pipeline; 7. safety valve, 8. delivery gauge, 9. liquid pours into pipe, 10. gas-liquid separation umbrella, 11. fluid reservoirs, 12. blow-off pipes; 13. electromagnetic valve, 14. re-injection pipelines, 15. gas-liquid delivery outlets, 16. vent valves, 17. mix defeated pumping-out line, 18. separators; 19. tank body, 20. upper end covers, 31. exhaust chambers, 32. imbibition chambeies, 33. refluxes.
The specific embodiment
The utility model is described further with embodiment below in conjunction with accompanying drawing 2.But what those skilled in the art should know is that the utility model is not limited to the listed specific embodiment, as long as spirit according to the invention all should belong in protection scope of the present invention.
The utility model oil and gas multiphase flow liquid re-injection system; Comprise oil-gas mixed delivery pump 1, separator 18, fluid reservoir 11, pipeline etc.; Oil-gas mixed delivery pump 1, mixed defeated pumping-out line 17, separator intake pipeline 6, separator 18, fluid reservoir 11, re-injection pipeline 14, mixed defeated pump intake pipeline 2 are communicated with successively, and the arrow mark is that pumped (conveying) medium is at intrasystem flow direction among Fig. 2.
Separator 18 comprises tank body 19, upper end cover 20, gas-liquid separation umbrella 10 etc.; Upper end cover 20 is fixedly mounted on tank body 19 upper ends; Usually adopt welding procedure to connect.Gas-liquid separation umbrella 10 is an infundibulate, and gas-liquid separation umbrella 10 vertically is installed in the middle part in the tank body 19, and shape, size in the big end of gas-liquid separation umbrella 10 and the tank body 19 match, and the big end of gas-liquid separation umbrella 10 is fixedly connected with tank body 19.Separator intake pipeline 6 is got in the tank body 19 by the side of separator 18, and is communicated with gas-liquid separation umbrella 10 upper ends.The eliminator delivery outlet 15 of tank body 19 is positioned at the top of gas-liquid separation umbrella 10.Be installed with liquid on the tank body 19 and pour into pipe, liquid pours into pipe 9 and is lower than gas-liquid separation umbrella 10 upper ends with tank body 19 link positions.
For the ease of controling, safety valve 7, delivery gauge 8, vent valve 16 are installed on the upper end cover 20 of separator 18.Temperature pick up 4 is installed on the pump housing of oil-gas mixed delivery pump 1; Mix pump suction end pressure sensor 3 is installed on the defeated pump intake pipeline 2; Mix on the defeated pumping-out line 17 outlet side of pump pressure sensor 5 is installed.
Tank body 19 lower ends of separator 18 are fixedly connected with fluid reservoir 11 upper ends, use flange, bolt to connect usually; Fluid reservoir 11 lower ends are connected with re-injection pipeline 14 and blow-off pipe 12, and electromagnetic valve 13 is installed on the re-injection pipeline 14.
The utility model oil and gas multiphase flow liquid re-injection system is provided with separator 18 outside oil-gas mixed delivery pump 1, the suction end of oil-gas mixed delivery pump 1 is connected with mixed defeated pump intake pipeline 2; The output of oil-gas mixed delivery pump 1 is connected with export pipeline 17, and export pipeline 17 is connected with separator intake pipeline 6 again; Separator 18 lower ends are fixedly connected with fluid reservoir 11, and the re-injection pipeline 14 of fluid reservoir 11 lower ends is communicated with mixed defeated pump intake pipeline 2 with the suction end of oil-gas mixed delivery pump 1, and the blow-off pipe 12 of the lower end of fluid reservoir 11 lower ends is communicated with drainage.
Oil-gas mixed delivery pump 1 gets into the gas-liquid mixed media of carrying the gas-liquid separation umbrella 10 of separator 18 through manifold; The gas-liquid mixed media that arrives gas-liquid separation umbrella 10 has pressure; Rotation when separating umbrella 10 through liquid gas, under action of centrifugal force, the material that density is bigger is thrown to the outer space; Downward along gas-liquid separation umbrella 10 inwalls, get in the fluid reservoir 11 of separator 18 belows; The material that density is less and all the other liquids and gases are compressed in inner space, upwards transfer out oil and gas multiphase flow liquid re-injection system through gas-liquid delivery outlet 15, realize the separation of re-injection liquid.
Pressure sensor 3, temperature pick up 4, pressure sensor 5, delivery gauge 8 and the electromagnetic valve 13 etc. installed in the utility model oil and gas multiphase flow liquid re-injection system are connected with automatic control system; The control system realizes the control to oil and gas multiphase flow liquid re-injection system according to the correlation values of setting, and guarantees oil and gas multiphase flow liquid re-injection system operate as normal.
Temperature pick up 4 is housed on the pump housing of oil-gas mixed delivery pump 1, and temperature pick up 4 is connected with the control system.When the medium air content of carrying is big, reach 80% when above like: oil-gas mixed delivery pump 1 imbibition end void fraction, the interior temperature of the pump housing raises rapidly; When temperature reached 80 ℃ Celsius, liquid electromagnetic valve 13 was opened back according to the signal of temperature pick up 4 feedbacks by the control system; The liquid that stores in the fluid reservoir 11 enters into through re-injection pipeline 14 and mixes in the defeated pump intake pipeline 2, reduces oil-gas mixed delivery pump 1 entrance void fraction, and the lubricating mechanical sealing device; Prevent oil-gas mixed delivery pump 1 dried the commentaries on classics, reduce delivery temperature; The medium air content of carrying when oil-gas mixed delivery pump 1 reduces; Oil-gas mixed delivery pump 1 imbibition end void fraction drops to below 80%, and temperature begins to reduce in the pump housing, when temperature is lower than 80 ℃ Celsius; Just no longer need re-injection liquid; Electrical control system is closed electromagnetic valve 13 according to the signal of temperature pick up 4 feedbacks, and the liquid that stores in the fluid reservoir 11 will no longer inject to mixing defeated pump intake pipeline 2.
Safety valve 7, the pressure sensor 5 installed on the separator 18 are safety attachments of oil and gas multiphase flow liquid re-injection system; When oil and gas multiphase flow liquid re-injection system pressure reach rated operating pressure more than 1.1 times the time safety valve 7 will open automatically that (for example: the rated operating pressure of oil and gas multiphase flow liquid re-injection system is 1.5MPa; When pressure reaches 1.65 when above); Release pressure outside system reduces system pressure, after pressure recovers the following normal value of 1.5MPa; 7 times seats of safety valve keep normal state.Pressure sensor 5 is that system works pressure is delivered to automatic control system through signal, and oil-gas mixed delivery pump 1 will stop automatically when pressure exceeds the controlling value of setting, and system is played a protective role when meeting accident fault.
On the tank body 19 of external separator 18 liquid intrusion pipe 9 is installed; At the 1 use initial stage of oil-gas mixed delivery pump; Can in fluid reservoir 11, inject suitable liquid through liquid intrusion pipe 9; Gas content is higher when preventing turn on pump, and does not have the liquid re-injection in the fluid reservoir 11 and oil-gas mixed delivery pump 1 is caused damage.
On the upper end cover 20 of separator 18 vent valve 16 is installed, gassy in separator 18 is when influencing oil-gas mixed delivery pump 1 output medium entering separator 18; Can termination of pumping; Open vent valve 16, the gas in the separator 18 is outwards discharged, guarantee oil-gas mixed delivery pump 1 and run well.Fluid reservoir 11 lower ends are equipped with blow-off pipe 12, when solid particle is too many in the fluid reservoir 11, can open Pollution discharge sluise gate blowdown outside jar after the termination of pumping, are recycled into the suction end of oil-gas mixed delivery pump 1 with the liquid that guarantees cleaning.
Because the utility model oil and gas multiphase flow liquid re-injection system is provided with the external liquid-gas separation device, does not receive the restriction of oil-gas mixed delivery pump, can confirm the volume of device as required; Separative efficiency is high, and it is many to store liquid measure, when the long-time air content of medium of carrying is too high; Can be the enough liquid of oil-gas mixed delivery pump imbibition end supply; Reduce the void fraction that oil-gas mixed delivery pump sucks end thereby reach, improve the anti-commentaries on classics ability of doing of oil-gas mixed delivery pump, the life-span of prolonged mechanical sealing; And simple in structure, be convenient to make and install.
It should be noted that the foregoing description is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (5)
1. oil and gas multiphase flow liquid re-injection system; Comprise oil-gas mixed delivery pump, feed-line, valve, it is characterized in that: oil-gas mixed delivery pump (1), mixed defeated pumping-out line (17), separator intake pipeline (6), separator (18), fluid reservoir (11), re-injection pipeline (14), mixed defeated pump intake pipeline (2) are communicated with successively.
2. according to the said oil and gas multiphase flow liquid of claim 1 re-injection system, it is characterized in that: said separator (18) comprises tank body (19), upper end cover (20), gas-liquid separation umbrella (10); Upper end cover (20) is fixedly mounted on tank body (19) upper end; Gas-liquid separation umbrella (10) is an infundibulate, and gas-liquid separation umbrella (10) vertically is installed in the middle part in the tank body (19), and the big end of gas-liquid separation umbrella (10) is fixedly connected with tank body (19);
Said separator intake pipeline (6) is got into by tank body (19) side of separator (18), and is communicated with gas-liquid separation umbrella (10) upper end;
Gas-liquid delivery outlet (15) on the said tank body (19) is positioned at the top of gas-liquid separation umbrella (10);
Be installed with liquid on the said tank body (19) and pour into pipe (9), liquid pours into pipe (9) and is lower than gas-liquid separation umbrella (10) upper end with tank body (19) link position;
Said tank body (19) lower end is fixedly connected with fluid reservoir (11) upper end.
3. according to the said oil and gas multiphase flow liquid of claim 2 re-injection system, it is characterized in that:
Safety valve (7), delivery gauge (8), vent valve (16) are installed on the upper end cover (20) of said separator (18);
Temperature pick up (4) is installed on the pump housing of said oil-gas mixed delivery pump (1); Mix on the defeated pump intake pipeline (2) pressure sensor (3) is installed; Mix on the defeated pumping-out line (17) pressure sensor (5) is installed.
4. according to the said oil and gas multiphase flow liquid of claim 3 re-injection system, it is characterized in that: said fluid reservoir (11) lower end is equipped with re-injection pipeline (14), blow-off pipe (12), and is communicated with respectively; Re-injection pipeline (14) is gone up electromagnetic valve (13) is installed.
5. according to the said oil and gas multiphase flow liquid of claim 4 re-injection system, it is characterized in that: said temperature pick up (4), pressure sensor (3), pressure sensor (5), delivery gauge (8), electromagnetic valve (13) are connected with automatic control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120163100 CN202117650U (en) | 2011-05-20 | 2011-05-20 | Oil-gas mixed convey liquid reinjection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120163100 CN202117650U (en) | 2011-05-20 | 2011-05-20 | Oil-gas mixed convey liquid reinjection system |
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| Publication Number | Publication Date |
|---|---|
| CN202117650U true CN202117650U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120163100 Expired - Fee Related CN202117650U (en) | 2011-05-20 | 2011-05-20 | Oil-gas mixed convey liquid reinjection system |
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| Country | Link |
|---|---|
| CN (1) | CN202117650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787836A (en) * | 2011-05-20 | 2012-11-21 | 中国石油集团渤海石油装备制造有限公司 | Liquid reinjection system for oil-gas mixed transportation |
-
2011
- 2011-05-20 CN CN 201120163100 patent/CN202117650U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787836A (en) * | 2011-05-20 | 2012-11-21 | 中国石油集团渤海石油装备制造有限公司 | Liquid reinjection system for oil-gas mixed transportation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20200520 |