CN205638413U - Offshore oil field oil gas water gathering system - Google Patents
Offshore oil field oil gas water gathering system Download PDFInfo
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- CN205638413U CN205638413U CN201620147749.3U CN201620147749U CN205638413U CN 205638413 U CN205638413 U CN 205638413U CN 201620147749 U CN201620147749 U CN 201620147749U CN 205638413 U CN205638413 U CN 205638413U
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Abstract
The utility model discloses an offshore oil field oil gas water gathering system, oil gas water gathering system is including collecing measuring device, heterogeneous delivery pump, free moisture from device, emulsification water separator, associated gas processing apparatus, sewage processing apparatus and crude oil stabilization jar etc. The defeated method of oil gas water collection includes that well liquid collects steps such as measurement, oil -gas -water three -phase separation, crude oil dehydration stability, associated gas processing, sewage treatment. Adopt rotatory flow field and implement super gravity separation, improved separation efficiency, reduced the quantity of splitter, simplified the flow, can effectively reduce the construction investment of offshore platform.
Description
Technical field
This utility model relates to a kind of oil-gas gathering and transportation technology, particularly relates to a kind of offshore oilfield oil gas water gathering system.
Background technology
The produced liquid in oil well of offshore oilfield contains a large amount of stratum associated water and associated gas, is necessary for implementing multi-phase separation to obtain qualified oil gas product.For most offshore oilfields, oil water separation process all completes on production platform or floating production system, and therefore the size of oily-water seperating equipment used and weight directly affect the production cost of offshore oil and gas.In recent years, along with continually developing of offshore oilfield, oil field comprehensive moisture content is more and more higher, produced liquid in oil well is aqueous reaches 80%～90%, generally there is the deficiencies such as efficiency is low, floor space big, time of staying length in the deposition dehydrating treatment facility based on Gravity Separation in initial stage of development construction, it is difficult to tackle the situation that middle and late stage moisture content rises, cause outer output oil to exceed standard because predrainage efficiency is low, the production problem of waste water treatmentntrol difficult happened occasionally in recent years, had had a strong impact on the continuous and stable production in oil field.And offshore platform space and load-bearing are limited, other separation equipment cannot be installed additional to expand disposal ability, for developing especially for deepwater, platform space and top loading greatly affect the construction installation cost of whole platform, more in the urgent need to area occupied compact, that heavy duty detergent oil-gas gathering and transferring technology reduces platform, alleviate top loading.
Utility model content
The purpose of this utility model is to provide a kind of offshore oilfield oil gas water gathering system, to overcome the deficiencies such as existing oil-gas gathering and transportation system efficiency is low, volume weight is huge.
The purpose of this utility model is achieved through the following technical solutions:
Offshore oilfield oil gas water gathering system of the present utility model, its preferably detailed description of the invention is:
Including collecting measurement apparatus, heterogeneous delivery pump, free water segregation apparatus, emulsified water segregation apparatus, associated gas processing means, sewage-treatment plant and crude oil stable can；
Described collecting production manifold and the test manifold that measurement apparatus includes being connected in parallel, described test manifold passes through follow-up metering separator and the effusion meter of being sequentially connected with of pipeline, and described effusion meter includes gas flowmeter and fluid flowmeter and analyser；
Described free water segregation apparatus is connected with phase separator, booster pump, inline dehydrator in turn by pipeline, described phase separator upstream is connected with collecting measurement apparatus through heterogeneous delivery pump, downstream gaseous phase outlet is connected with associated gas processing means, and downstream liquid-phase outlet is connected with booster pump；
Described emulsified water segregation apparatus is connected with annealer supply pump, heater, electric dehydrator in turn by pipeline, described annealer supply pump exports with the oil phase of inline dehydrator and is connected, the oil phase outlet of described electric dehydrator is connected with crude oil stable can, and the aqueous phase of described electric dehydrator exports intensified pump and is connected with the entrance of cyclone gas buoyant tank；
Described associated gas processing means includes the compressor that is sequentially connected with through pipeline and inline defluid device, and the liquid-phase outlet of described inline defluid device is connected with closed system, and gaseous phase outlet is connected with flare system and boiler oil gas system；
Described sewage-treatment plant includes inline cyclone, cyclone gas buoyant tank, filter, slop tank and pumping system, the intensified pump in described inline cyclone upstream exports with the aqueous phase of inline dehydrator and is connected, the intensified pump in described cyclone gas buoyant tank upstream exports with the aqueous phase of inline cyclone and electric dehydrator and is connected, the intensified pump in described filter upstream exports with the aqueous phase of cyclone gas buoyant tank and is connected, described inline cyclone, cyclone gas buoyant tank, oil phase outlet all entrances with described slop tank of filter are connected, the intensified pump that exports of described slop tank is connected with the entrance of inline dehydrator.
The technical scheme provided by above-mentioned this utility model can be seen that, the offshore oilfield oil gas water gathering system that this utility model embodiment provides, by using hypergravity isolation technics at free water segregation apparatus, associated gas processing means and sewage-treatment plant, improve separation efficiency, decrease the quantity of separation equipment, simplify flow process, the more important thing is 1/4 that the floor space of equipment can be made to be reduced to conventional articulated gravity equipment, weight reduction is the 1/18 of conventional articulated gravity equipment, effectively reduces the construction investment of offshore platform.It addition, use vertical vortex air flotation technology process oil-polluted water, not only compact conformation, and high-efficiency environment friendly, after process, sewage meets row's sea requirement.
Accompanying drawing explanation
The offshore oilfield oil gas water gathering system schematic diagram that Fig. 1 provides for this utility model embodiment；
Fig. 2 is the structural representation of inline separation equipment in this utility model embodiment；
Fig. 3 is inline separation equipment the second export structure schematic diagram in this utility model embodiment；
Fig. 4 is vertical cyclone air-flotation knockout drum structural representation in this utility model embodiment.
In Fig. 1, each label corresponding point parts are: 1-collects measurement apparatus, 2-free water segregation apparatus, 3-emulsified water segregation apparatus, 4-sewage-treatment plant, 5-associated gas processing means, the heterogeneous delivery pump of 6-, 7-crude oil stable can, 11-produces manifold, 12-test manifold, 13-metering separator, 14-gas flowmeter, 15-fluid flowmeter, 21-phase separator, the inline dehydrator of 23-, 31-annealer supply pump, 32-heater, 33-electric dehydrator, 22, 41, 43, 45, 47-booster pump, 42-slop tank, the inline cyclone of 44-, 46-cyclone gas buoyant tank, 48-filter, 51-compressor, the inline defluid device of 52-；
The part that in Fig. 2, Fig. 3, each label is corresponding is: 61-mixture inlet, 62-Qi Xuan district, 63-Disengagement zone, the light phase collecting pipe of 64-, 65-heavy out, 66-light phase export, the light phase pooling zone of 67-
The part that in Fig. 4, each label is corresponding is: 71-oil water mixture entrance, 72-flotation area, 73-gas-liquid mixture entrance, and 74-aqueous phase exports, and 75-oil phase exports, 76-air vent.
Detailed description of the invention
This utility model embodiment will be described in further detail below.
Offshore oilfield oil gas water gathering system of the present utility model, its preferably detailed description of the invention is:
Including collecting measurement apparatus, heterogeneous delivery pump, free water segregation apparatus, emulsified water segregation apparatus, associated gas processing means, sewage-treatment plant and crude oil stable can；
Described collecting production manifold and the test manifold that measurement apparatus includes being connected in parallel, described test manifold passes through follow-up metering separator and the effusion meter of being sequentially connected with of pipeline, and described effusion meter includes gas flowmeter and fluid flowmeter and analyser；
Described free water segregation apparatus is connected with phase separator, booster pump, inline dehydrator in turn by pipeline, described phase separator upstream is connected with collecting measurement apparatus through heterogeneous delivery pump, downstream gaseous phase outlet is connected with associated gas processing means, and downstream liquid-phase outlet is connected with booster pump；
Described emulsified water segregation apparatus is connected with annealer supply pump, heater, electric dehydrator in turn by pipeline, described annealer supply pump exports with the oil phase of inline dehydrator and is connected, the oil phase outlet of described electric dehydrator is connected with crude oil stable can, and the aqueous phase of described electric dehydrator exports intensified pump and is connected with the entrance of cyclone gas buoyant tank；
Described associated gas processing means includes the compressor that is sequentially connected with through pipeline and inline defluid device, and the liquid-phase outlet of described inline defluid device is connected with closed system, and gaseous phase outlet is connected with flare system and boiler oil gas system；
Described sewage-treatment plant includes inline cyclone, cyclone gas buoyant tank, filter, slop tank and pumping system, the intensified pump in described inline cyclone upstream exports with the aqueous phase of inline dehydrator and is connected, the intensified pump in described cyclone gas buoyant tank upstream exports with the aqueous phase of inline cyclone and electric dehydrator and is connected, the intensified pump in described filter upstream exports with the aqueous phase of cyclone gas buoyant tank and is connected, described inline cyclone, cyclone gas buoyant tank, oil phase outlet all entrances with described slop tank of filter are connected, the intensified pump that exports of described slop tank is connected with the entrance of inline dehydrator.
Described phase separator, inline defluid device and inline cyclone are referred to as inline separation equipment, overall employing tubular structure, the hypergravity produced by rotational flow field implements multi-phase separation, described inline separation equipment, including the mixture inlet being sequentially connected with, Qi Xuan district, Disengagement zone, light phase collecting pipe and outlet, described outlet includes light phase export and heavy out.
The entrance of described inline separation equipment, export, by Flange joint to transfer pipeline, and the physical dimension that according to separating medium and separation requirement adjusted inline separation equipment or use parallel way combination according to treating capacity.
Described cyclone gas buoyant tank is vertical gas buoyant tank, and lower space is provided with tubular type microbubble generator, and upper space is flotation area；Described cyclone air-flotation pot sidewall top is provided with oil water mixture tangential inlet and oil phase outlet, and top is provided with bottom air vent and is provided with aqueous phase outlet.
Gathering system of the present utility model realizes oil gas water collecting and transporting method, including following components:
1) well liquid collects measurement: use test manifold that a small amount of oil well liquid-producing is transported in metering separator carry out separate measurement, uses production manifold to be transported to phase separator after being collected by a large amount of oil well liquid-producings；
2) oil gas water three phase separates: uses phase separator separation manifold to come the gas in liquid and liquid, the free water in liquid and oil phase is separated through inline dehydrator；
3) crude oil dehydration is stable: use electric dehydrator to slough the emulsified water in above-mentioned oil phase, moisture content is dropped to less than 1%, remove volatile components subsequently into crude oil stable can, be met the crude oil of outer defeated standard；
4) associated gas processes: above-mentioned gas enters fuel gas system after inline defluid device removing liquid；
5) sewage disposal: the oil-polluted water that inline dehydrator and electric dehydrator produce directly arranges sea after the process of described sewage-treatment plant is up to standard.
Offshore oilfield oil gas water gathering system of the present utility model, by using hypergravity isolation technics at free water segregation apparatus, associated gas processing means and sewage-treatment plant, improve separation efficiency, decrease the quantity of separation equipment, simplify flow process, the more important thing is 1/4 that the floor space of equipment can be made to be reduced to conventional articulated gravity equipment, weight reduction is the 1/18 of conventional articulated gravity equipment, effectively reduces the construction investment of offshore platform.It addition, use vertical vortex air flotation technology process oil-polluted water, not only compact conformation, and high-efficiency environment friendly, after process, sewage meets row's sea requirement.
Specific embodiment:
As it is shown in figure 1, offshore oilfield oil gas water gathering system of the present utility model, including collecting measurement apparatus 1, heterogeneous delivery pump 6, free water segregation apparatus 2, emulsified water segregation apparatus 3, associated gas processing means 5, sewage-treatment plant 4 and crude oil stable can 7；Wherein,
Free water segregation apparatus 2 upstream is connected with collecting measurement apparatus 1 through heterogeneous delivery pump 6, downstream is connected to three branch lines, being connected with emulsified water segregation apparatus 3, associated gas processing means 5, sewage-treatment plant 4 respectively according to medium in pipe, emulsified water segregation apparatus 3 downstream is connected with crude oil stable can；
Above-mentioned collect production manifold 11 and the test manifold 12 that measurement apparatus 1 includes being connected in parallel, major part well head to be delivered to after liquid collects heterogeneous delivery pump by described production manifold 11, a small amount of well head is carried out liquid and delivers to metering separator 13 and carry out gas-liquid separation by described test manifold 12, gas phase after separation is imported conveyance conduit after being measured by gas flowmeter 14 and delivers to heterogeneous delivery pump, and the liquid phase after separation delivers to heterogeneous delivery pump by importing conveyance conduit after fluid flowmeter 15 and analyser quantitative analysis；
Well head carrys out liquid and is delivered to free water segregation apparatus 2 after the supercharging of heterogeneous delivery pump 6, gas-liquid separation implemented by the phase separator 21 entered in free water segregation apparatus 2, isolated gas phase is delivered to associated gas processing means 5 by pipeline, enter inline dehydrator 23 after the supercharging of isolated liquid phase (oil water mixture) intensified pump 22 and implement oil-water separation, isolated free water enters sewage-treatment plant 4, and isolated oil phase enters emulsified water segregation apparatus 3；
The gas of above-mentioned entrance associated gas processing means 5 enters inline defluid device 52 after compressor 51 supercharging and removes a small amount of liquid carried in gas, the dry gas of removing liquid is partly into boiler oil feed channel and enters flare system burn as user's fuel, remainder；
Enter heater 34 after entering oil phase thermally treated device supply pump 31 supercharging of emulsified water segregation apparatus 3 to heat, oil phase after heating is delivered to electric dehydrator 35, by electric field action breakdown of emulsion to isolate the emulsified water in oil phase, isolated emulsified water is delivered to sewage-treatment plant 4, and after electric dehydrator 35 processes, moisture content is less than the Crude Oil Transportation of 1% to crude oil stable can 7；
In crude oil stable can 7, be delivered to boiler oil feed channel after the volatilization of volatile light hydrocarbon component as user's fuel, stable after crude oil outer the most defeated through multi-purpose station pipeline；
The sewage entering sewage-treatment plant includes two parts, and one is the above-mentioned isolated free water of inline dehydrator 23, enters inline cyclone 44 and implement oil-water separation after the supercharging of intensified pump 43；Two is the emulsified water that above-mentioned electric dehydrator 35 is separated, and enters cyclone air-flotation tank 46 and implement oil-water separation further together with the sewage separated with above-mentioned inline cyclone 44 after the supercharging of intensified pump 45；Entering filter 48 after oil-polluted water intensified pump 47 supercharging after cyclone gas buoyant tank 46 process to filter, the sewage after filtration meets row's seamark and collimates sea of running in；The oil phase that above-mentioned inline cyclone 44, cyclone gas buoyant tank 46, filter 48 are separated is delivered to slop tank 42 after collecting, deliver to inline dehydrator 23 and implement oil-water separation after the supercharging of intensified pump 41.
Above-mentioned phase separator 21, inline defluid device 52 and inline cyclone 44 are referred to as inline separation equipment, product for this utility model people's independent research and development, its operation principle is as in figure 2 it is shown, overall employing tubular structure, and the hypergravity produced by rotational flow field implements multi-phase separation.Specific works process is as described below: have the biphase of density contrast or three-phase mixed phase enters separation equipment from mixture inlet 61 under a certain pressure, under the effect playing vane sheet, high speed rotating is produced when flowing through Qi Xuan district 62, after entering behind Disengagement zone 63 under the influence of centrifugal force, less light phase of density collects nucleation at center, being discharged by light phase export 66 after light phase collecting pipe 64 is collected, the heavy phase that density is bigger is collected in exterior annular space and is then discharged by heavy out 65.Above-mentioned separator inlet 61, outlet 65,66 can be compact conformation, light by Flange joint in transfer pipeline.It addition, the physical dimension of inline separation equipment can be adjusted according to separating medium and the requirement to separating effect；Mode in parallel can be used to combine inline separation equipment according to the requirement for the treatment of capacity.When using parallel way combination, it is recommended that select the export structure shown in Fig. 3, one-dimensional space structure can be realized, not only combine conveniently, and greatly reduce occupation of land space.
Vertical vortex dissolved air flotation tank 46 is the product of this utility model people's independent research and development, its structure is as shown in Figure 4, utilize tubular type microbubble generator, substantial amounts of micro air bubble it is mixed in pending oil-polluted water, then enter vertical vortex dissolved air flotation tank 46 from upper tangential entrance 71, produce weak eddy flow in the Disengagement zone of middle and upper part.On the one hand weak eddy flow makes the contaminant particle of lightweight and micro air bubble migrate to center, on the other hand promote the collision between contaminant particle and micro air bubble to adhere to, form bubble-pollutant flco that density is less, under the dual function of gravity and centrifugal force, flco floats up to rapidly the water surface, is formed " an air supporting effect ".Bubble-pollutant the flco floating to liquid level can be discharged from container top air vent depended on pressure, it is also possible to takes flow by gravity to discharge；Sewage after process is discharged from bottom, and water backflow and top after part process are discharged gas and again mixed in gas-liquid mixing pump, and the recirculation water with a large amount of micro air bubbles enters through gas-liquid mixture entrance 73 at lower vessel portion, plays " secondary air supporting effect ".All in all, oil-polluted water is equivalent to carry out a cyclonic separation and secondary dissolved air flotation in cyclone air-flotation knockout drum, and therefore oil removal efficiency more conventional cyclonic separation equipment and conventional air-flotation separation equipment have and promote by a relatively large margin.
Described electric dehydrator 33 and filter 48 have been obtained for extensively applying in oil water separation process, and this utility model repeats no more.
The above; it is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (4)
1. an offshore oilfield oil gas water gathering system, it is characterized in that, including collecting measurement apparatus (1), heterogeneous delivery pump (6), free water segregation apparatus (2), emulsified water segregation apparatus (3), associated gas processing means (5), sewage-treatment plant (4) and crude oil stable can (7)；
Described collect production manifold (11) and the test manifold (12) that measurement apparatus (1) includes being connected in parallel, described test manifold (12) is sequentially connected with metering separator (13) and effusion meter by pipeline is follow-up, and described effusion meter includes gas flowmeter (14) and fluid flowmeter (15) and analyser；
Described free water segregation apparatus (2) is connected with phase separator (21), booster pump (22), inline dehydrator (23) in turn by pipeline, described phase separator (21) upstream is connected with collecting measurement apparatus (1) through heterogeneous delivery pump (6), downstream gaseous phase outlet is connected with associated gas processing means (5), and downstream liquid-phase outlet is connected with booster pump (22)；
Described emulsified water segregation apparatus (3) is connected with annealer supply pump (31), heater (34), electric dehydrator (35) in turn by pipeline, described annealer supply pump (31) exports with the oil phase of inline dehydrator (23) and is connected, the oil phase outlet of described electric dehydrator is connected with crude oil stable can (7), and the aqueous phase of described electric dehydrator exports intensified pump (45) and is connected with the entrance (71) of cyclone gas buoyant tank (46)；
Described associated gas processing means (5) includes compressor (51) and the inline defluid device (52) being sequentially connected with through pipeline, the liquid-phase outlet of described inline defluid device (52) is connected with closed system, and gaseous phase outlet is connected with flare system and boiler oil gas system；
nullDescribed sewage-treatment plant (4) includes inline cyclone (44)、Cyclone gas buoyant tank (46)、Filter (48)、Slop tank (42) and pumping system (41)、(43)、(45)、(47)，The intensified pump in described inline cyclone (44) upstream (43) exports with the aqueous phase of inline dehydrator (23) and is connected，The intensified pump in described cyclone gas buoyant tank (46) upstream (45) exports with the aqueous phase of inline cyclone (44) and electric dehydrator (35) and is connected，The intensified pump in described filter (48) upstream (47) exports with the aqueous phase of cyclone gas buoyant tank and is connected，Described inline cyclone (44)、Cyclone gas buoyant tank (46)、Oil phase outlet all entrances with described slop tank (42) of filter (48) are connected，The intensified pump of the outlet (41) of described slop tank (42) is connected with the entrance of inline dehydrator (23).
Offshore oilfield oil gas water gathering system the most according to claim 1, it is characterized in that, described phase separator (21), inline defluid device (52) and inline cyclone (44) are referred to as inline separation equipment, overall employing tubular structure, the hypergravity produced by rotational flow field implements multi-phase separation, described inline separation equipment, including the mixture inlet (61) being sequentially connected with, Qi Xuan district (62), Disengagement zone (63), light phase collecting pipe (64) and outlet, described outlet includes light phase export (66) and heavy out (65).
Offshore oilfield oil gas water gathering system the most according to claim 2, it is characterized in that, the entrance (61) of described inline separation equipment, outlet (65), (66) are by Flange joint to transfer pipeline, and the physical dimension that according to separating medium and separation requirement adjusts inline separation equipment or use parallel way combination according to treating capacity.
Offshore oilfield oil gas water gathering system the most according to claim 1, it is characterized in that, described cyclone gas buoyant tank (46) is vertical gas buoyant tank, and lower space is provided with tubular type microbubble generator (73), and upper space is flotation area (72)；Described cyclone air-flotation pot sidewall top is provided with oil water mixture tangential inlet (71) and oil phase outlet (75), and top is provided with air vent (76) bottom and is provided with aqueous phase outlet (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147749.3U CN205638413U (en) | 2016-02-26 | 2016-02-26 | Offshore oil field oil gas water gathering system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620147749.3U CN205638413U (en) | 2016-02-26 | 2016-02-26 | Offshore oil field oil gas water gathering system |
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| CN205638413U true CN205638413U (en) | 2016-10-12 |
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| CN201620147749.3U Withdrawn - After Issue CN205638413U (en) | 2016-02-26 | 2016-02-26 | Offshore oil field oil gas water gathering system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604535A (en) * | 2016-02-26 | 2016-05-25 | 北京石油化工学院 | Offshore oilfield oil-gas-water gathering and transporting system and method |
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2016
- 2016-02-26 CN CN201620147749.3U patent/CN205638413U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604535A (en) * | 2016-02-26 | 2016-05-25 | 北京石油化工学院 | Offshore oilfield oil-gas-water gathering and transporting system and method |
| CN105604535B (en) * | 2016-02-26 | 2018-06-08 | 北京石油化工学院 | A kind of offshore oilfield oil gas water gathering system and method |
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Granted publication date: 20161012 Effective date of abandoning: 20180608 |