CN213739299U - Oil field pressure-fired crude oil stabilizing device - Google Patents
Oil field pressure-fired crude oil stabilizing device Download PDFInfo
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- CN213739299U CN213739299U CN202022382922.7U CN202022382922U CN213739299U CN 213739299 U CN213739299 U CN 213739299U CN 202022382922 U CN202022382922 U CN 202022382922U CN 213739299 U CN213739299 U CN 213739299U
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Abstract
The utility model belongs to the technical field of oil field crude oil treatment, in particular to an oil field micro-positive pressure crude oil stabilizing device, which comprises a crude oil heat exchanger, a crude oil heater, a micro-positive pressure stabilizing tower, a stable gas water cooler, a stable gas three-phase separator, a stable gas compressor and a stable gas compressor water cooler; crude oil heat exchanger, crude oil heater, pressure-fired stabilizer, stabilize air water cooler and stabilize gas three-phase separator and series connection in proper order, the gas outlet of stabilizing gas three-phase separator series connection in proper order stabilizes the air compressor and stabilizes the air compressor water cooler, stabilizes the sewage exit linkage sewage pipes line of gas three-phase separator, and the light oil exit linkage light oil export pipeline of stabilizing gas three-phase separator has solved the problem that the job site cycle is long, equipment dispersion, area is big for crude oil stabilization, the utility model discloses an integrated design, compact structure reduces area, shortens construction cycle.
Description
Technical Field
The utility model belongs to the technical field of the crude oil treatment in the oil field, concretely relates to oil field pressure-fired crude oil stabilising arrangement.
Background
A large number of united stations are currently built in the Changqing oil field, based on the specific regional environment of the Changqing oil field, heating, depressurization, storage and transportation are needed for the requirements of various process management such as metering, storage and transportation, crude oil at a transfer station or a pressurization point is conveyed to the united stations by an oil conveying pump and then mostly enters a three-phase separator for dehydration, and the dehydrated crude oil overflows to a purification tank and then is conveyed to the oil conveying station by the pump. The crude oil in the purification tank contains a large amount of dissolved gas (C) which is gaseous at normal temperature and pressure1～C4) The vapor pressure of the crude oil is very high, during storage and transportation, the components with strong volatility in the crude oil are vaporized in a large quantity, and the heavier components in the crude oil are brought into the weather due to the carrying effect to generate a large quantity of oil vaporAnd the oil gas is discharged into the atmosphere, so that the evaporation loss of the oil gas is high, the energy is wasted, and the environment is polluted. On the other hand, unstable crude oil does not meet the requirement of safe storage. Therefore, the crude oil of the oil field united station needs to be stabilized, volatile light components in the crude oil are recovered, and the oil field united station has good economic and social benefits while meeting the requirements of storage, transportation and safety. At present, most crude oil stabilizing devices are distributed, the number of devices is large, the field construction period is long, and the occupied area is large.
SUMMERY OF THE UTILITY MODEL
The utility model provides an oil field micro-positive pressure crude oil stabilizing device, which aims to overcome the problems that the crude oil in the prior art has higher evaporation loss of oil gas in the storage and transportation process, which wastes energy and pollutes environment, and the unstable crude oil can not meet the requirement of safe storage; the second purpose is to overcome the problems of multiple devices, long field construction period and large occupied area of the crude oil stabilizing device which is distributed in the prior art.
Therefore, the utility model provides an oil field micro-positive pressure crude oil stabilizing device, which comprises a crude oil heat exchanger, a crude oil heater, a micro-positive pressure stabilizing tower, a stable gas water cooler, a stable gas three-phase separator, a stable gas compressor and a stable gas compressor water cooler; the crude oil heat exchanger, the crude oil heater, the micro-positive pressure stabilizer, the stable gas water cooler and the stable gas three-phase separator are sequentially connected in series, a gas outlet of the stable gas three-phase separator is sequentially connected in series with the stable gas compressor and the stable gas compressor water cooler, a sewage outlet of the stable gas three-phase separator is connected with a sewage discharge pipeline, and a light oil outlet of the stable gas three-phase separator is connected with a light oil output pipeline.
Furthermore, the sewage treatment device also comprises an oily sewage pump which is connected on the sewage discharge pipeline.
Further, the device also comprises a light oil pump, and the light oil pump is connected to a light oil external transmission pipeline.
Furthermore, a stable crude oil outlet is formed in the lower portion of the micro-positive pressure stabilizing tower, a stable crude oil inlet and a stable crude oil outlet are formed in the crude oil heat exchanger, and the stable crude oil outlet of the micro-positive pressure stabilizing tower is connected with the stable crude oil inlet of the crude oil heat exchanger through a stable crude oil pipeline.
Further, the system also comprises a stable crude oil pump which is connected between the crude oil heat exchanger and the micro-positive pressure stabilizer through a stable crude oil pipeline.
Further, the device also comprises a stabilized crude oil cooler, wherein a stabilized crude oil outlet of the crude oil heat exchanger is connected with the stabilized crude oil cooler through a stabilized crude oil pipeline.
The gas outlet of the non-condensing gas separator is output through a non-condensing gas pipeline, and the liquid outlet of the non-condensing gas separator is connected with the inlet of the stable gas three-phase separator through a condensing liquid pipeline.
Further, the system also comprises a heat conduction oil pipeline and a circulating water pipeline, wherein the crude oil heater is connected to the heat conduction oil pipeline, and the stable gas water cooler, the stable gas compressor water cooler and the stable crude oil cooler are connected to the circulating water pipeline.
A micro-positive pressure crude oil stabilizing process method for an oil field comprises the following steps: after heat is recovered by heat exchange of the unstabilized crude oil through a crude oil heat exchanger, the unstabilized crude oil enters a crude oil heater to be heated to a set temperature and then enters a micro-positive pressure stabilizer, and crude oil stabilized gas and stabilized crude oil are flashed from the micro-positive pressure stabilizer; cooling the crude oil stable gas which is flashed out to a set temperature by a stable gas water cooler, then feeding the cooled crude oil stable gas into a stable gas three-phase separator for oil-water-gas separation, pressurizing the crude oil stable gas which is separated by the stable gas three-phase separator by a stable gas compressor, then feeding the pressurized crude oil stable gas into a stable gas compressor water cooler for cooling, feeding the cooled crude oil stable gas into a noncondensable gas separator for gas-liquid separation after cooling to the set temperature, feeding the noncondensable gas which is separated by the noncondensable gas separator into a downstream for recovery and recombination, and feeding the condensate which is separated by the noncondensable gas separator into the three-phase separator for oil-water-gas separation; the sewage separated by the stable gas three-phase separator is output by a sewage discharge pipeline for sewage treatment; light oil separated by the stable gas three-phase separator is output and recycled; the stabilized crude oil separated by the micro-positive pressure stabilizing tower enters a crude oil heat exchanger to recover heat, and then enters a stabilized crude oil cooler to be cooled and transported for storage; the unstabilized crude absorbs heat released by the stabilized crude in the crude heat exchanger.
The utility model has the advantages that:
the utility model provides an oil field micro-positive pressure crude oil stabilizing device, which comprises a crude oil heat exchanger, a crude oil heater, a micro-positive pressure stabilizing tower, a stable gas water cooler, a stable gas three-phase separator, a stable gas compressor and a stable gas compressor water cooler; the integrated design is adopted, the safety of the existing crude oil stabilizing device is improved, and the problems of long construction period, scattered equipment, large occupied area and the like of a crude oil stabilizing site are solved;
2. the utility model provides a this kind of oil field pressure-fired crude oil stabilising arrangement installs oily sewage pump on the blow off pipeline, and oily sewage pump 12 blowdown ability is strong, and is non-clogging, reasonable in design, and supporting motor power is little, and energy-conserving effect is showing, and compact structure removes conveniently, and the installation is simple, and reducible engineering cost need not to build the pump house.
3. The utility model provides an oil field pressure-fired crude oil stabilizing device, install the light oil pump on the light oil export pipeline, the light oil pump compact structure, self-priming capability is powerful, high efficiency, can possess very strong adaptability, and in some conveying liquid environment with impurity, the light oil pump has the longest service life, adapts to the occasion of continuous long-term work;
4. the utility model provides an oil field pressure-fired crude oil stabilizing device, install stable crude oil pump on the stable crude oil pipeline between crude oil heat exchanger and the pressure-fired stabilizer, stable crude oil pump carries the light oil process stably, does not shake, does not fall oil, and efficient, the operation is stable, work efficiency is high;
5. the utility model provides an oil field pressure-fired crude oil stabilising arrangement adopts noncondensable gas separator 10, noncondensable gas separator 10 can carry out aqueous vapor separation with the oil steady gas after the cooling, makes the noncondensable gas recovery of separating recombine to and make the condensate of separation department transport once more and return to steady gas three-phase separator 7 and further oil-gas separation, improve the precision;
6. the utility model provides a this kind of oil field pressure-fired crude oil stabilising arrangement adopts the pressure-fired stabilizer, and the stable crude oil of the stable department of pressure-fired stabilizer gets into 2 recovery heats of crude oil heat exchanger, improves the reuse rate of stabilizing crude oil.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic flow diagram of a process for stabilizing crude oil under micro-positive pressure in an oil field.
Description of reference numerals: 1. unstabilized crude oil; 2. a crude oil heat exchanger; 3. a crude oil heater; 4. a micro-positive pressure stabilization tower; 5. crude oil stabilization gas; 6. stabilizing the air water cooler; 7. a stable gas three-phase separator; 8. stabilizing the gas compressor; 9. stabilizing a water cooler of the gas compressor; 10. a noncondensable gas separator; 11. a condensate line; 12. an oily sewage pump; 13. a waste line; 14. a light oil pump; 15. light oil export lines; 16. stabilizing the crude oil pipeline; 17. stabilizing the crude oil pump; 18. a stabilized crude oil cooler; 19. heat conducting oil; 20. circulating water; 21. non-condensable gas.
Detailed Description
Example 1:
as shown in fig. 1, the micro-positive pressure crude oil stabilizing device for the oil field comprises a crude oil heat exchanger 2, a crude oil heater 3, a micro-positive pressure stabilizing tower 4, a stabilizing gas water cooler 6, a stabilizing gas three-phase separator 7, a stabilizing gas compressor 8 and a stabilizing gas compressor water cooler 9; the crude oil heat exchanger 2, the crude oil heater 3, the micro-positive pressure stabilizer 4, the stable gas water cooler 6 and the stable gas three-phase separator 7 are sequentially connected in series, a gas outlet of the stable gas three-phase separator 7 is sequentially connected in series with the stable gas compressor 8 and the stable gas compressor water cooler 9, a sewage outlet of the stable gas three-phase separator 7 is connected with a sewage discharge pipeline 13, and a light oil outlet of the stable gas three-phase separator 7 is connected with a light oil output pipeline 15.
Further, the crude oil heat exchanger 2, the crude oil heater 3, the micro-positive pressure stabilizer 4, the stable gas water cooler 6, the stable gas three-phase separator 7, the stable gas compressor 8 and the stable gas compressor water cooler 9 adopt skid-mounted devices; the device can accomplish whole prefabrication at the manufacturing plant, the transportation of being convenient for to reducible site operation work load adopts the integrated design, improves current crude oil stabilising arrangement security, solves crude oil stabilization site operation cycle length, equipment dispersion, area big scheduling problem.
Example 2:
on the basis of the embodiment 1, further, an oily sewage pump 12 is also included, and the oily sewage pump 12 is connected to a sewage pipeline 13. The oily sewage pump 12 has strong sewage discharge capacity, no blockage, reasonable design, small power of a matched motor, obvious energy-saving effect, compact structure, convenient movement, simple installation, reduced construction cost and no need of building a pump room.
Further, the device also comprises a light oil pump 14, and the light oil pump 14 is connected to a light oil output pipeline 15. The light oil pump 14 has a compact structure, strong self-priming capability and high efficiency, can have strong adaptability, and has the longest service life in the impurity-containing liquid conveying environment and is suitable for occasions of continuous long-term work.
Further, a stabilized crude oil outlet is formed in the lower portion of the micro-positive pressure stabilizing tower 4, a stabilized crude oil inlet and a stabilized crude oil outlet are formed in the crude oil heat exchanger 2, and the stabilized crude oil outlet of the micro-positive pressure stabilizing tower 4 is connected with the stabilized crude oil inlet of the crude oil heat exchanger 2 through a stabilized crude oil pipeline 16. The stable crude oil at the stable position of the micro-positive pressure stabilizing tower 4 enters the crude oil heat exchanger 2 to recover heat, and the repeated utilization rate of the stable crude oil is improved.
Further, the system also comprises a stable crude oil pump 17, wherein the stable crude oil pump 17 is connected between the crude oil heat exchanger 2 and the micro-positive pressure stabilizer 4 through a stable crude oil pipeline 16; the stable crude oil pump has the advantages of stable light oil conveying process, no vibration, no oil falling, high efficiency, stable operation and high working efficiency.
Further, a stabilized crude oil cooler 18 is included, and a stabilized crude oil outlet of the crude oil heat exchanger 2 is connected with the stabilized crude oil cooler 18 through a stabilized crude oil pipeline 16. The stabilized crude oil cooler 18 is convenient for cooling the stabilized crude oil 16 after absorbing heat and returning the cooled stabilized crude oil to reuse, thereby improving the utilization rate.
Further, the micro-positive pressure stabilizing tower 4 adopts a tank back tower form; after entering the tower from the upper part of the tower tray of the micro-positive pressure stabilizing tower 4, the crude oil is stabilized in the tower, the stabilized crude oil is buffered in a buffer tank at the lower part of the micro-positive pressure stabilizing tower 4, then pressurized by a stabilized crude oil pump 17, enters a crude oil heat exchanger 2 to recover heat, then enters a stabilized crude oil cooler 18 to be cooled, and returns to an oil station for storage and export sales. Simple structure is stable, improves the reuse rate of stable crude oil.
Further, the gas-liquid separator comprises a noncondensable gas separator 10, an outlet of the stable gas compressor water cooler 9 is connected with an inlet of the noncondensable gas separator 10, a gas outlet of the noncondensable gas separator 10 is output through a noncondensable gas pipeline 21, and a liquid outlet of the noncondensable gas separator 10 is connected with an inlet of the stable gas three-phase separator 7 through a condensate pipeline 11. The non-condensable gas separator 10 can separate water from gas of the cooled oil-stabilized gas, recover and recombine the separated non-condensable gas, and convey the condensed liquid at the separation part back to the stabilized gas three-phase separator 7 for further oil-gas separation, thereby improving the precision; the stationary gas three-phase separator 7 and the noncondensable gas separator 10 are conventional devices, and the structure and principle thereof will not be described in detail.
Further, the system also comprises a heat conduction oil pipeline 19 and a circulating water pipeline 20, the crude oil heater 3 is connected to the heat conduction oil pipeline 19, and the stable gas water cooler 6, the stable gas compressor water cooler 9 and the stable crude oil cooler 18 are connected to the circulating water pipeline 20. The heat conducting oil pipeline 19 is used for conveying heat to the crude oil heater 3, the circulating water pipeline 20 is used for cooling the stable gas water cooler 6, the stable gas compressor water cooler 9 and the stable crude oil cooler 18, and the heat conducting oil pipeline 19 and the circulating water pipeline 20 can be recycled, so that the structure is simple, energy is saved, emission is reduced, and the utilization rate is improved.
Example 3:
on the basis of the embodiment 2, the oilfield micro-positive pressure crude oil stabilizing process method comprises the following steps: after heat is recovered by heat exchange of an unstable crude oil 1 through a crude oil heat exchanger 2, the unstable crude oil enters a crude oil heater 3 to be heated to a set temperature, and then enters a micro-positive pressure stabilizer 4, and crude oil stable gas 5 and stable crude oil are flashed from the micro-positive pressure stabilizer 4; cooling the crude oil stable gas 5 which is flashed out to a set temperature by a stable gas water cooler 6, then feeding the cooled crude oil stable gas 5 into a stable gas three-phase separator 7 for oil-water-gas separation, pressurizing the crude oil stable gas 5 which is separated out by the stable gas three-phase separator 7 by a stable gas compressor 8, then feeding the pressurized crude oil stable gas into a stable gas compressor water cooler 9 for internal cooling, feeding the crude oil stable gas 5 into a noncondensable gas separator 10 for gas-liquid separation after being cooled to the set temperature, feeding the noncondensable gas 21 which is separated by the noncondensable gas separator 10 into a downstream recovery and recombination, and feeding the condensate which is separated by the noncondensable gas separator 10 into the three-phase separator 7 for oil-water-gas separation; the sewage separated by the stable gas three-phase separator 7 is output by a sewage discharge pipeline 13 for sewage treatment; the light oil separated by the stable gas three-phase separator 7 is output and recycled; the stabilized crude oil separated by the micro-positive pressure stabilizing tower 4 enters the crude oil heat exchanger 2 to recover heat, and then enters the stabilized crude oil cooler 18 to be cooled and transported for storage; the unstabilized crude oil 1 absorbs heat released by the stabilized crude oil in the crude oil heat exchanger 2.
The device has the advantages of high integration degree, highly optimized process, good stabilizing effect, high separation efficiency, good recovery effect, shortened construction period, centralized equipment and small occupied area.
Example 4:
on the basis of the embodiment 3, unstable crude oil 1 from an upstream station firstly exchanges heat with stable crude oil in a crude oil heat exchanger 2, after heat is recovered, the unstable crude oil enters a crude oil heater 3 and is heated to about 100 ℃, then enters a micro-positive pressure crude oil stabilizing tower 4, a crude oil stable gas 5 is flashed out under 105kPa in the micro-positive pressure crude oil stabilizing tower 4, the stable gas 5 flashed out enters a stable gas water cooler 6 and is cooled to 40 ℃, then a stable gas three-phase separator 7 carries out three-phase separation, the separated crude oil stable gas 5 directly enters a stable gas compressor 8 for pressurization, the pressurized oil stable gas enters a stable gas compressor water cooler 9 and is cooled to 40 ℃, then a non-condensable gas 10 carries out two-phase separation, the separated non-condensable gas 21 enters a downstream system and is recovered as a heavy component; the condensate separated by the noncondensable gas separator 10 is conveyed back to the stable gas three-phase separator 7 through a condensate pipeline 11 to further realize oil-gas separation, the separated oily sewage is pressurized by an oily sewage pump 12 and then conveyed to a downstream sewage recovery system for treatment through a sewage discharge pipeline 13, the separated light oil is pressurized by a light oil pump 14 and then conveyed to the downstream light oil recovery system for treatment through a light oil output pipeline 15, the micro-positive pressure crude oil stabilization 4 tower adopts a tank-back tower form, the crude oil enters the tower from the upper part of a tower top tray and is stabilized in the tower, the stable crude oil is buffered in a buffer tank at the lower part of the micro-positive pressure stabilization tower and then is pressurized by a stable crude oil pump 17 and enters the crude oil heat exchanger 2 to recover heat,and then enters a stabilized crude oil cooler 18 for cooling, and returns to the oil station for storage and export sale. The treatment capacity is 10-60 multiplied by 104the crude oil at t/a is stable.
In the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms or the like based on the orientation or positional relationship shown in the drawings, it is not intended to indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (8)
1. The utility model provides an oil field pressure-fired crude oil stabilising arrangement which characterized in that: comprises a crude oil heat exchanger (2), a crude oil heater (3), a micro-positive pressure stabilizer (4), a stabilizer gas water cooler (6), a stabilizer gas three-phase separator (7), a stabilizer gas compressor (8) and a stabilizer gas compressor water cooler (9); the device comprises a crude oil heat exchanger (2), a crude oil heater (3), a micro-positive pressure stabilizer (4), a stabilized gas water cooler (6) and a stabilized gas three-phase separator (7) which are sequentially connected in series, wherein a gas outlet of the stabilized gas three-phase separator (7) is sequentially connected with a stabilized gas compressor (8) and a stabilized gas compressor water cooler (9) in series, a sewage outlet of the stabilized gas three-phase separator (7) is connected with a sewage discharge pipeline (13), and a light oil outlet of the stabilized gas three-phase separator (7) is connected with a light oil output pipeline (15).
2. The oilfield micro-positive pressure crude oil stabilization device of claim 1, wherein: the sewage treatment device also comprises an oily sewage pump (12), and the oily sewage pump (12) is connected to the sewage discharge pipeline (13).
3. The oilfield micro-positive pressure crude oil stabilization device of claim 1, wherein: the device also comprises a light oil pump (14), wherein the light oil pump (14) is connected to the light oil output pipeline (15).
4. The oilfield micro-positive pressure crude oil stabilization device of claim 1, wherein: the lower part of the micro-positive pressure stabilizing tower (4) is provided with a stable crude oil outlet, the crude oil heat exchanger (2) is provided with a stable crude oil inlet and a stable crude oil outlet, and the stable crude oil outlet of the micro-positive pressure stabilizing tower (4) is connected with the stable crude oil inlet of the crude oil heat exchanger (2) through a stable crude oil pipeline (16).
5. The oilfield micro-positive pressure crude oil stabilization device of claim 4, wherein: the device also comprises a stable crude oil pump (17), wherein the stable crude oil pump (17) is connected between the crude oil heat exchanger (2) and the micro-positive pressure stabilizer (4) through a stable crude oil pipeline (16).
6. The oilfield micro-positive pressure crude oil stabilization device of claim 4, wherein: the device also comprises a stabilized crude oil cooler (18), wherein a stabilized crude oil outlet of the crude oil heat exchanger (2) is connected with the stabilized crude oil cooler (18) through a stabilized crude oil pipeline (16).
7. The oilfield micro-positive pressure crude oil stabilization device of claim 1, wherein: the device is characterized by further comprising a noncondensable gas separator (10), an outlet of the stable gas compressor water cooler (9) is connected with an inlet of the noncondensable gas separator (10), a gas outlet of the noncondensable gas separator (10) is output through a noncondensable gas pipeline (21), and a liquid outlet of the noncondensable gas separator (10) is connected with an inlet of the stable gas three-phase separator (7) through a condensate pipeline (11).
8. The oilfield micro-positive pressure crude oil stabilization device of claim 6, wherein: the device is characterized by further comprising a heat conduction oil pipeline (19) and a circulating water pipeline (20), the crude oil heater (3) is connected to the heat conduction oil pipeline (19), and the stable gas water cooler (6), the stable gas compressor water cooler (9) and the stable crude oil cooler (18) are all connected to the circulating water pipeline (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022382922.7U CN213739299U (en) | 2020-10-23 | 2020-10-23 | Oil field pressure-fired crude oil stabilizing device |
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| CN202022382922.7U CN213739299U (en) | 2020-10-23 | 2020-10-23 | Oil field pressure-fired crude oil stabilizing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480957A (en) * | 2020-10-23 | 2021-03-12 | 西安长庆科技工程有限责任公司 | Micro-positive pressure crude oil stabilizing device and process method for oil field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112480957A (en) * | 2020-10-23 | 2021-03-12 | 西安长庆科技工程有限责任公司 | Micro-positive pressure crude oil stabilizing device and process method for oil field |
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