CN112780249B - Underwater three-phase multi-stage gravity type separation injection-production system - Google Patents
Underwater three-phase multi-stage gravity type separation injection-production system Download PDFInfo
- Publication number
- CN112780249B CN112780249B CN202011504895.4A CN202011504895A CN112780249B CN 112780249 B CN112780249 B CN 112780249B CN 202011504895 A CN202011504895 A CN 202011504895A CN 112780249 B CN112780249 B CN 112780249B
- Authority
- CN
- China
- Prior art keywords
- phase
- separator
- gas
- liquid
- column type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005484 gravity Effects 0.000 title claims abstract description 112
- 238000000926 separation method Methods 0.000 title claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 200
- 238000003860 storage Methods 0.000 claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 230000007704 transition Effects 0.000 claims abstract description 18
- 239000012071 phase Substances 0.000 claims description 215
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 239000007791 liquid phase Substances 0.000 claims description 43
- 238000004581 coalescence Methods 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 3
- 235000019198 oils Nutrition 0.000 description 33
- 230000002776 aggregation Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 238000005054 agglomeration Methods 0.000 description 5
- 238000005191 phase separation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 235000019476 oil-water mixture Nutrition 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002569 water oil cream Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
- E21B43/385—Arrangements for separating materials produced by the well in the well by reinjecting the separated materials into an earth formation in the same well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Cyclones (AREA)
Abstract
The invention discloses an underwater three-phase multistage gravity type separation injection and production system, and belongs to the field of ocean oil and gas development. The separation injection-production system comprises an integral support structure, a three-stage column type gas-liquid cyclone separator and a support bracket thereof, a horizontal three-phase gravity separator and a support bracket thereof, three groups of booster delivery pumps, a transition liquid storage tank and corresponding connecting pipelines. The three-stage column type gas-liquid cyclone separator and the support bracket thereof, the horizontal three-phase gravity separator and the support bracket thereof, the three groups of booster delivery pumps and the transition liquid storage tank are all positioned in the integral support structure and are connected through corresponding pipelines to form a three-phase multi-stage separation injection-production system. The production liquid of the production well can be directly separated in three phases at the seabed, so that the production liquid is prevented from being lifted to an offshore platform for separation treatment, unnecessary energy consumption is reduced, precious platform area is saved for the offshore platform, the static pressure of the vertical pipe and the backpressure of a wellhead are reduced, the oil-gas exploitation efficiency and stability are improved, and the production cost is reduced.
Description
Technical Field
The invention belongs to the field of ocean oil and gas development, and particularly relates to an underwater three-phase multistage gravity type separation injection and production system.
Background
In the initial ocean oil and gas exploration and development process, the produced substances of the seabed oil well are conveyed to an offshore platform or a shore-based facility through a long-distance pipeline, then the subsequent oil-gas-water separation treatment is carried out, and the onshore conveying is carried out, so that the comprehensive benefit is more efficient than the construction of an underwater production system. However, along with the increase of the mining time and the increase of the mining strength, the water content of the deep sea produced liquid also becomes high, a large amount of energy consumption is generated by long-distance transportation, treatment and reinjection, the production cost is increased, and meanwhile, the vertical pressure increase of the pipeline also has serious influence on the whole production system. Therefore, as the exploration and development of marine oil and gas are deepened, the construction of underwater production systems becomes one of the key technologies for marine oil and gas exploration. The underwater separation injection and production system is an important component of an underwater production system. At present, the research on an underwater separation injection and production system in China is still in a preliminary planning and testing stage, and the problems of simple equipment, weak liquid quantity processing capacity, low separation efficiency and the like exist. The developed reasonable and efficient underwater separation injection-production system can improve the production efficiency of the offshore platform, reduce the economic cost and play a certain positive role in solving a series of problems faced by the current offshore oil-gas field development. In order to make up for the defects and the blank of the marine oil gas development technology in China, the invention provides an underwater three-phase multi-stage gravity separation injection and production system, which can directly carry out oil-gas-water three-phase separation on the produced fluid of a production well on the seabed so as to avoid lifting the produced fluid to an offshore platform for separation treatment, thereby reducing unnecessary energy consumption, saving precious platform area for the offshore platform, simultaneously reducing the static pressure of a stand pipe and the backpressure of a wellhead, improving the efficiency and the stability of oil gas exploitation and reducing the production cost.
Disclosure of Invention
In order to solve the technical problem of underwater separation faced by the current offshore oilfield exploitation, the invention provides an underwater three-phase multistage gravity separation injection and production system, and the system technology can directly carry out oil-gas-water three-phase separation on production fluid of a production well on the seabed.
The underwater three-phase multi-stage gravity type separation injection and production system comprises an integral support structure, a three-stage column type gas-liquid cyclone separator, a horizontal three-phase gravity separator, a gas phase boosting conveying pump, a water phase boosting conveying pump, an oil phase boosting conveying pump and a transition liquid storage tank, wherein the three-stage column type gas-liquid cyclone separator, the horizontal three-phase gravity separator, the gas phase boosting conveying pump, the water phase boosting conveying pump, the oil phase boosting conveying pump and the transition liquid storage tank are all located inside the integral support structure, produced liquid of an oil-gas well at the sea bottom enters the three-stage column type gas-liquid cyclone separator through an input pipeline of the separation injection and production system, liquid phase media separated by the three-stage column type gas-liquid cyclone separator enter the horizontal three-phase gravity separator through a connecting pipeline, a gas-water-oil three-phase outlet is formed in the horizontal three-phase gravity separator, and the separated water phase media are connected with the transition liquid storage tank through a water phase outlet pipeline and then are connected through a connecting pipe The oil phase medium obtained by separation is connected with the oil phase booster delivery pump through an oil phase outlet and is lifted to an oil storage device of a seabed or an offshore platform through the oil phase booster delivery pump, the gas phase medium obtained by separation of the three-stage column type gas-liquid cyclone separator and the gas phase medium still remained in the liquid phase medium obtained by separation of the horizontal three-phase gravity separator are respectively converged into the same delivery pipeline through respective gas phase outlet pipelines and then are connected with the gas phase booster delivery pump and are delivered to a gas phase treatment station through the gas phase booster delivery pump.
Furthermore, the three-stage column type gas-liquid cyclone separator consists of three single-stage column type gas-liquid cyclone separators, three-way valves are arranged between the first-stage column type gas-liquid cyclone separator and the second-stage column type gas-liquid cyclone separator as well as between the second-stage column type gas-liquid cyclone separator and the third-stage column type gas-liquid cyclone separator, the produced liquid of the seabed oil-gas well enters the first-stage column type gas-liquid cyclone separator through an input pipeline, the liquid phase outlet pipelines of the first-stage column type gas-liquid cyclone separator and the second-stage column type gas-liquid cyclone separator are divided into two pipelines through the three-way valve, one pipeline is connected with the inlet pipeline of the next-stage column type gas-liquid cyclone separator, the other pipeline is converged into the total liquid phase outlet pipeline of the three-stage column type gas-liquid cyclone separator, a two-way valve is arranged at the liquid phase outlet pipeline of the third-stage column type gas-liquid cyclone separator, and the separated liquid phase medium is converged into the total liquid phase outlet pipeline after passing through the two-way valve, gas phase outlet pipelines positioned at the tops of the three single-stage column type gas-liquid cyclone separators are converged into a gas phase main outlet pipeline of the three-stage column type gas-liquid cyclone separator, and stop valves are arranged at the gas phase outlet pipelines at the second-stage and third-stage column type gas-liquid cyclone separators.
Furthermore, the horizontal three-phase gravity separator consists of a separator main body, a fluid input pipeline of the horizontal gravity separator, an electrode control box, a gas phase outlet pipeline of the horizontal gravity separator, a water phase outlet pipeline of the horizontal gravity separator, an oil phase outlet pipeline of the horizontal gravity separator, an inlet circular hole baffle, an arc-shaped blade movable rotor and a cylinder thereof, a rotatable blade baffle group, a circular hole baffle group, an electrostatic coalescence electrode plate and a weir plate, wherein the separator main body consists of a cylinder at the middle part and hemispheres positioned at two sides, the fluid input pipeline of the horizontal three-phase gravity separator is connected into the horizontal separator along the direction parallel to the axis of the separator main body, two mutually vertical semicircular inlet circular hole baffles are arranged in the area near an inlet in the separator main body, the arc-shaped blade movable rotor and the cylinder thereof are arranged below the inlet circular hole baffles, the separator is characterized in that a rotatable blade baffle group, a circular hole baffle group, an electrostatic coalescence electrode plate and a weir plate are sequentially arranged from an inlet area to the interior of the separator, an electrode control box is configured right above the electrostatic coalescence electrode plate, a gas phase outlet pipeline of the horizontal gravity separator is arranged at the top of one side of the separator body, which is far away from the inlet area, an oil phase outlet pipeline of the horizontal three-phase gravity separator is positioned at one end, which is far away from the inlet area, of the separator, and a water phase outlet pipeline of the horizontal three-phase gravity separator is arranged in the middle of the separator.
Furthermore, the circular hole baffle group is composed of three groups of circular hole baffles with different baffle intervals and circular hole densities, the distance between each group of circular hole baffles gradually decreases along the direction of the axis of the separator, which is gradually far away from the inlet, and the circular hole densities also gradually become sparse.
Further, the electrostatic coalescence electrode plates are a set of parallel grid structures which are distributed at non-equal intervals along the direction vertical to the axis of the separator, and the closer to the bottom of the separator, the larger the distance between the electrode plates is.
Furthermore, the weir plate is positioned at the rear end of the separator and is of a semicircular baffle structure, and a water phase outlet pipeline of the horizontal gravity separator and an oil phase outlet pipeline of the horizontal gravity separator are respectively positioned at two sides of the weir plate.
Furthermore, the number of the water phase outlet pipelines of the horizontal gravity separator is four, the water phase outlet pipelines are distributed in the middle of the separator main body at unequal intervals, and the closer to the oil phase outlet pipeline of the horizontal gravity separator, the smaller the interval of the water phase outlet pipeline of each horizontal gravity separator is.
Furthermore, the three-stage column type gas-liquid cyclone separator, the horizontal three-phase gravity separator, the gas-phase booster conveying pump, the water-phase booster conveying pump and the oil-phase booster conveying pump are all provided with independent supporting brackets.
Furthermore, the integral support structure comprises a bottom platform and an upper support, the bottom platform is of a rectangular flat plate structure with an upper layer and a lower layer, the upper layer platform and the lower layer platform are separated from each other through a blank groove structure, and the three-stage column type gas-liquid cyclone separator and a support thereof, the horizontal three-phase gravity separator and a support thereof, the three groups of booster delivery pumps, the transition liquid storage tank and the connecting pipeline are all arranged on the upper layer platform.
Has the advantages that:
1) the underwater three-phase multi-stage gravity separation injection and production system is directly installed on the seabed, and can separate oil, gas and water from produced liquid of a production well in a near-well area without conveying the produced liquid to an offshore platform through a vertical pipe according to a traditional mode and then performing separation treatment, so that the platform space is saved, the energy consumption is reduced, the static pressure of the vertical pipe and the back pressure of a wellhead are reduced, and the production stability is improved;
2) the underwater three-phase multistage gravity separation injection and production system can carry out multistage separation on the produced liquid of the oil-gas well, so that the three-phase separation of oil, gas and water is realized to the greatest extent, and the integral separation effect of the system is greatly improved;
3) the three-stage column type cyclone separator is formed by combining three single-stage column type gas-liquid cyclone separators, and the stage number of the column type gas-liquid cyclone separator participating in liquid volume treatment can be controlled by controlling the switches of the relevant valves according to the size of the liquid volume to be treated and the gas content, so that the reasonable configuration of the separation device is realized, and the service life of the separation device is prolonged;
4) the horizontal three-phase gravity separator is provided with a relatively complete inlet component, a rectifying component and an agglomeration component which are composed of an inlet circular hole baffle, an arc-shaped blade movable rotor, a rotatable blade baffle group, a circular hole baffle group and an electrostatic agglomeration electrode plate, can realize relatively thorough oil-water separation of oil-water mixtures entering the separator, and simultaneously adopts an electrostatic agglomeration separation technology, compared with the conventional gravity separation, the electrostatic agglomeration separation can accelerate the agglomeration of small liquid drops in oil-water emulsion, thereby improving the oil-water gravity separation efficiency;
5) three-stage column type gas-liquid cyclone separator and horizontal three-phase gravity separator of profit are all installed on same platform through whole support structure, and simple structure is compact, can wholly transfer to the seabed during installation, have avoided fixed the step of laying and interconnect alone, can wholly hoist during the maintenance, have simplified the operation degree of difficulty greatly. Meanwhile, the gas-liquid separator and the oil-water separator are provided with independent supports, and can be lifted for independent overhaul and maintenance when faults occur.
Drawings
FIG. 1 is a three-dimensional schematic view of an underwater three-phase multi-stage gravity separation injection-production system;
FIG. 2 is a top view of an underwater three-phase multi-stage gravity separation injection-production system;
FIG. 3 is a side view of an underwater three-phase multi-stage gravity separation injection-production system;
FIG. 4 is a front view of an underwater three-phase multi-stage gravity separation injection-production system;
FIG. 5 is a three-dimensional schematic view of a three-stage column type gas-liquid cyclone separator and a support bracket thereof;
FIG. 6 is a side view of a three-stage column type gas-liquid cyclone and its support bracket;
FIG. 7 is a top view of a three-stage column type gas-liquid cyclone separator and its support bracket;
FIG. 8 is a rear view of the three-stage column type gas-liquid cyclone and its support bracket;
FIG. 9 is a three-dimensional schematic view of a horizontal three-phase gravity separator and its support frame;
FIG. 10 is a side view of a horizontal three-phase gravity separator and its support bracket;
FIG. 11 is a top view of the horizontal three-phase gravity separator and its support bracket;
FIG. 12 is a schematic cross-sectional view of a horizontal three-phase gravity separator;
FIG. 13 is a front view of a movable rotor with arcuate vanes;
FIG. 14 is a top view of the movable letter turn of the arcuate vanes;
FIG. 15 is a schematic three-dimensional view of a movable vane barrier;
FIG. 16 is a front view of the movable vane barrier;
fig. 17 is a schematic three-dimensional structure diagram of a circular hole baffle.
1. An integral support structure, 2, a support of a horizontal three-phase gravity separator, 3, the horizontal three-phase gravity separator, 4, a support of a three-stage column type gas-liquid cyclone separator, 5, the three-stage column type gas-liquid cyclone separator, 6, a system input pipeline, 7, a connecting pipeline of the horizontal gravity separator and the column type gas-liquid cyclone separator, 8, a gas phase booster conveying pump, 9, a water phase booster conveying pump, 10, a transition liquid storage tank, 11, an oil phase booster conveying pump, 12, a support of the booster conveying pump, 301, a fluid input pipeline of the horizontal gravity separator, 302, an electrode control box, 303, a gas phase outlet pipeline of the horizontal gravity separator, 304, a water phase outlet pipeline of the horizontal gravity separator, 305, an oil phase outlet pipeline of the horizontal gravity separator, 306, an inlet circular hole baffle, 307, an arc-shaped blade movable rotor and a cylinder body thereof, 308, a gas phase outlet pipeline of the horizontal gravity separator, a transition liquid storage tank, a transition liquid phase booster conveying pump, a transition liquid storage tank, a liquid phase booster conveying pump, a liquid phase pump, a, Rotatable blade baffle group, 309, round hole baffle group, 310, electrostatic coalescence electrode plate, 311, weir plate, 501, inlet pipeline of three-stage column type gas-liquid cyclone separator, 502, first-stage column type gas-liquid cyclone separator, 503, first-stage stop valve, 504, second-stage column type gas-liquid cyclone separator, 505, second-stage stop valve, 506, third-stage column type gas-liquid cyclone separator, 507, first-stage three-way valve, 508, second-stage three-way valve, 509, two-way valve, 510, total gas phase outlet pipeline of three-stage column type gas-liquid cyclone separator, 511, total liquid phase outlet pipeline of three-stage column type gas-liquid cyclone separator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration only, not by way of limitation, i.e., the embodiments described are intended as a selection of the best mode contemplated for carrying out the invention, not as a full mode.
As shown in fig. 1, 2, 3 and 4, the underwater three-phase multi-stage gravity separation injection-production system includes: the device comprises an integral support structure 1, a three-stage column type gas-liquid cyclone separator 5, a support bracket 4 of the three-stage column type gas-liquid cyclone separator, a horizontal three-phase gravity separator 3, a support bracket 2 of the horizontal three-phase gravity separator, a gas phase booster conveying pump 8, a water phase booster conveying pump 9, an oil phase booster conveying pump 11, a transition liquid storage tank 10 and corresponding connecting pipelines. Wherein, the three-stage column type gas-liquid cyclone separator 5, the support bracket 4 of the three-stage column type gas-liquid cyclone separator, the horizontal three-phase gravity separator 3 and the support bracket 2 of the horizontal three-phase gravity separator are arranged in the integral support structure 1, and the three-stage column type gas-liquid cyclone separator 5 and the horizontal three-phase gravity separator 3 are connected and communicated with a connecting pipeline 7 of the column type gas-liquid cyclone separator through the horizontal gravity separator.
The unitary support structure 1 includes a bottom platform and an upper support. Wherein the bottom platform is upper and lower two-layer rectangle flat structure, separates each other through the blank groove structure that sets up between upper platform and the lower floor's platform, and all separator and connecting line all place on the upper platform, set up lower floor's platform and groove structure's purpose and carry out direct contact in order to avoid upper platform and seabed to play certain degree's guard action to separator and the pipeline of placing on the upper platform. The upper support is located on the bottom platform, four square support poles of the upper support are fixed at four square corners of the bottom platform, four mutually perpendicular square poles are arranged at the top of the upper support, and four arched circular rings are arranged above the square poles and used for the whole separation injection-production system so as to facilitate integral installation and maintenance.
The gas phase booster pump 8, the water phase booster pump 9, the oil phase booster pump 11 and the support bracket 12 of the booster pump are also arranged in the integral bracket structure 1, the structure of the support bracket 12 of the booster pump is similar to that of the integral bracket structure 1, the cuboid bracket is used as a main body, and a plurality of horizontal square pole columns and vertical square pole columns are intersected and constructed. The gas phase pressurizing and conveying pump 8, the water phase pressurizing and conveying pump 9 and the oil phase pressurizing and conveying pump 11 are mainly used for pressurizing corresponding separated phases and conveying the separated phases to the next link for further treatment. Wherein the gas-phase booster conveying pump 8 is connected with a gas-phase collecting pipeline consisting of a gas-phase outlet pipeline 510 of the three-stage column type gas-liquid cyclone separator and a gas-phase outlet pipeline 303 of the horizontal three-phase gravity separator and is used for boosting and conveying a gas phase separated by the separation injection-production system; the water phase pressurizing and conveying pump 9 is connected with an outlet pipeline of the transition liquid storage tank 10 and is used for pressurizing and injecting the water phase separated by the separation injection-production system back into the stratum so as to play a role in maintaining the ground pressure, and the transition liquid storage tank 10 mainly plays a role in temporarily storing excessive water phase and reducing the work load of the water phase pressurizing and conveying pump 9; the oil phase pressurizing and conveying pump 11 is connected with an oil phase outlet pipeline 305 of the horizontal three-phase gravity separator, and plays a role in pressurizing and conveying the oil phase separated by the separation injection-production system.
As shown in fig. 5, 6, 7 and 8, the support frame 4 of the three-stage column type gas-liquid cyclone separator has a rectangular frame as a main body, wherein the rectangular frame is constructed by intersecting a plurality of horizontal square posts and vertical square posts, two sides of the rectangular frame are respectively provided with a square post distributed along a rectangular diagonal line, the upper part and the lower part of the frame are provided with a square post and a disc type support for supporting the column type separator, the square post on the upper part is provided with a plurality of support rings for supporting a pipeline, and the uppermost part of the rectangular frame is provided with four lifting rings for suspending the gas-liquid separator for installation and maintenance.
The three-stage column type gas-liquid cyclone separator 5 is composed of a first-stage column type gas-liquid cyclone separator 502, a second-stage column type gas-liquid cyclone separator 504 and a third-stage column type gas-liquid cyclone separator 506, the three single-stage column type gas-liquid cyclone separators are main places for realizing gas-liquid separation of a mixture, the gas-liquid mixture enters the single-stage column type gas-liquid cyclone separators through an inclined tangential inlet, under the comprehensive action of centrifugal force, gravity and buoyancy, a liquid phase with higher density is pushed to the outer side along the radial direction and moves downwards to be discharged from a liquid phase outlet at the bottom of the separator, and a gas phase with lower density moves to a central area and floats upwards to be discharged from a gas phase outlet at the top of the separator.
A first-stage three-way valve 507 and a second-stage three-way valve 508 are respectively arranged between the first-stage single-stage column gas-liquid cyclone separator 502 and the second-stage single-stage column gas-liquid cyclone separator 504 and between the second-stage single-stage column gas-liquid cyclone separator 504 and the third-stage single-stage column gas-liquid cyclone separator 506, used for controlling the communication condition of the liquid phase outlet pipeline of the gas-liquid separator of the stage and the mixture inlet pipeline of the gas-liquid separator of the next stage and the total liquid phase outlet pipeline 511 of the column type gas-liquid cyclone separator of the third stage, a two-way valve 509 is arranged between the liquid phase outlet pipeline of the third stage single-stage column type gas-liquid cyclone 506 and the total liquid phase outlet pipeline 511 of the third stage column type gas-liquid cyclone, is used for controlling the connection condition of the liquid phase outlet pipeline of the third stage single-stage column type gas-liquid cyclone 506 and the total liquid phase outlet pipeline 511 of the third stage single-stage column type gas-liquid cyclone. A first-stage stop valve 503 and a second-stage stop valve 505 are respectively arranged between the gas-phase outlet pipeline of the second-stage single-stage column type gas-liquid cyclone separator 504 and the gas-phase outlet pipeline of the third-stage single-stage column type gas-liquid cyclone separator 506 and the total gas-phase outlet pipeline 510 of the three-stage column type gas-liquid cyclone separator, and are used for controlling the communication relationship between the gas-phase outlet pipelines of the second-stage single-stage column type gas-liquid cyclone separator 504 and the third-stage single-stage column type gas-liquid cyclone separator 506 and the total gas-phase outlet pipeline 510 of the gas-liquid separator.
The produced liquid of the production well enters the three-stage column type gas-liquid cyclone separator 3 through the inlet pipeline 501, then gas-liquid separation is realized in the single-stage column type gas-liquid cyclone separator, the separated gas phase is gathered to the total gas phase outlet pipeline 510 of the three-stage column type gas-liquid cyclone separator through the gas phase outlet of each single-stage column type gas-liquid cyclone separator, and then is conveyed to the next stage link for subsequent treatment through a conveying pipeline, and the separated liquid phase is gathered to the total liquid phase outlet pipeline through the liquid phase outlet of each single-stage column type gas-liquid cyclone separator, and then is conveyed to the horizontal three-phase gravity separator 3 through the connecting pipeline 7 for oil-water two-phase separation.
In the gas-liquid separation link, the stage number of the single-stage column type gas-liquid cyclone separator participating in the gas-liquid separation can be adjusted according to the size of the treatment liquid amount. When the liquid to be treated is small, the treatment capacity of the single-stage column gas-liquid cyclone 502 is sufficient, and at this time, the liquid phase outlet of the first-stage column gas-liquid cyclone is connected to the total liquid phase outlet pipeline 511 of the three-stage column gas-liquid cyclone by controlling the first-stage three-way valve 507, the communication between the liquid phase outlet pipelines of the second-stage column gas-liquid cyclone 504 and the third-stage column gas-liquid cyclone 506 and the total liquid phase outlet pipeline 511 of the three-stage column gas-liquid cyclone is blocked by controlling the second-stage three-way valve 504 and the two-way valve 509, and the communication between the gas phase outlet pipelines of the second-stage column gas-liquid cyclone 504 and the third-stage column gas-liquid cyclone 506 and the total gas phase outlet pipeline 510 of the three-stage column gas-liquid cyclone is blocked by controlling the first-stage stop valve 503 and the second-stage stop valve 505, so that the gas phase separated in the first stage column gas-liquid cyclone 502 is prevented from flowing back to the second stage column gas-liquid cyclone 504 and the third stage column gas-liquid cyclone 506. When the amount of liquid to be treated is increased and the secondary column type gas-liquid cyclone separator is required to be capable of treating the liquid, the liquid phase outlet pipeline of the primary column type gas-liquid cyclone separator 502 is connected with the inlet pipeline of the next stage gas-liquid separator by adjusting the primary three-way valve 507 and the secondary three-way valve 508, the liquid phase outlet pipeline of the secondary column type gas-liquid cyclone separator 504 is connected with the main outlet pipeline 511 of the tertiary column type gas-liquid cyclone separator, the liquid phase outlet pipeline of the tertiary column type gas-liquid cyclone separator 508 is blocked from being communicated with the main liquid phase outlet pipeline 511 of the tertiary column type gas-liquid cyclone separator by controlling the two-way valve 509, and the gas phase outlet pipeline of the tertiary column type gas-liquid cyclone separator 506 is blocked from being communicated with the main gas phase outlet pipeline 510 by controlling the secondary stop valve 505, so that the gas phase separated by the primary column type gas-liquid cyclone separator 502 and the secondary column type gas-liquid cyclone separator 504 is prevented from flowing back to the tertiary column type gas-liquid cyclone separator In separator 506. When the amount of liquid to be treated is increased and the three-stage column type gas-liquid cyclone separator is required to treat the liquid, the liquid phase outlet pipeline of the first-stage and second-stage column type gas-liquid cyclone separators is connected with the inlet pipeline of the next-stage separator by controlling the first-stage three-way valve 507 and the second-stage three-way valve 508, and the liquid phase outlet pipeline of the third-stage column type gas-liquid cyclone separator is connected with the total liquid phase outlet pipeline 511 of the three-stage column type gas-liquid cyclone separator by adjusting the two-way valve 509.
As shown in fig. 9, 10 and 11, the support frame 2 of the horizontal three-phase gravity separator is mainly a rectangular parallelepiped frame constructed by intersecting a plurality of horizontal square poles and vertical square poles, and four hanging rings are provided at the tops of the circular poles at the four corners of the support frame for hanging the gas-liquid separator for installation and decoration.
The horizontal three-phase gravity separator 3 consists of a separator body, a fluid input pipeline 301 of the horizontal gravity separator and an outlet pipeline corresponding to each separation. Wherein the fluid input line 301 of the horizontal gravity separator is connected to the interior of the separator in a direction parallel to the axis of the separator. The gas phase outlet line 303 of the horizontal three-phase gravity separator is located at the top of the horizontal separator, the oil phase outlet line 305 of the horizontal three-phase gravity separator is located at the end of the separator remote from the inlet area, while the four aqueous phase outlet lines 304 of the horizontal three-phase gravity separator are distributed at unequal intervals in the middle of the separator, the closer to the oil phase outlet line 305 of the horizontal three-phase gravity separator, the smaller the interval of each aqueous phase outlet line is.
As shown in fig. 12, the inlet circular hole baffle 306 located at the inlet area belongs to the component of the inlet component of the horizontal three-phase gravity separator 3, and is composed of two mutually perpendicular semicircular circular hole baffles, the movable rotor with arc-shaped blades and the supporting cylinder 307 thereof located at the bottom of the inlet circular hole baffle 306 are also part of the inlet component of the horizontal three-phase gravity separator 3, and the movable rotor with arc-shaped blades as shown in fig. 13 and 14 jointly form the inlet component of the horizontal three-phase gravity separator 3, and play roles of reducing and stabilizing the flow velocity, changing the flow direction and preventing the fluid entering the interior of the separator through the inlet pipeline 301 from entering a dead liquid area. Each group of the vane baffles of the rotatable vane baffle group 308 is composed of four vanes which can rotate freely around a circular shaft fixed on the inner wall of the separator from top to bottom, the structure of the rotatable vane baffle is shown in fig. 15 and 16, when no liquid flows into the separator, the vanes in the rotatable vane baffle group 308 do not deflect at any angle, the direction of the vanes is perpendicular to the direction of the axis of the separator, when the liquid enters the separator through the inlet pipeline 301 and the inlet member, the liquid will transfer the kinetic energy of the part of the liquid to the rotatable vane baffle group 308, so that the vanes of the rotatable vane baffle group 308 deflect at a certain angle, and the rotatable vane baffle group 308 belongs to a part of the rectifying member of the horizontal three-phase gravity separator 3 and mainly plays the roles of reducing the kinetic energy of the fluid and stabilizing the flow field. The circular hole baffle plate group 309 is composed of three groups of circular hole baffle plates with different intervals and different circular hole densities, the structure of the circular hole baffle plate is shown in figure 17, the distance between each group of circular hole baffle plates along the direction of gradually keeping away from an inlet along the axis of the separator gradually becomes smaller, the circular hole densities also become sparse gradually, the circular hole baffle plate group 309 mainly plays a role in stabilizing a flow field and accelerating the coalescence of liquid drops, belongs to a rectifying and gathering structure of the horizontal three-phase gravity separator 3, and the intervals and the circular hole densities of the circular hole baffle plates can be adjusted according to the size of required treatment liquid amount. The electrostatic coalescence electrode plate 310 is a group of parallel grid plate structures which are distributed along the direction vertical to the separator in a non-equidistant way, the closer to the bottom of the separator, the larger the space between the electrode plates is, the electrostatic coalescence electrode plate can ionize positive and negative ions, thereby accelerating the polymerization and condensation speed of small liquid drops in the mixed oil-water emulsion, accelerating the separation speed and improving the separation efficiency, and the electrostatic coalescence electrode plate 310 belongs to a polymerization structure of a horizontal gravity separator 3 and can adjust the quantity and the space of the electrode plates according to the size of required treatment liquid and the water content. An electrode control box 302 located above the electrostatic coalescer electrode plate 310 can be used to control the operating state of the electrode plate. The weir plate 311 located at the rear end of the separator is of a semicircular baffle structure, the water phase outlet pipeline 304 and the oil phase outlet pipeline 305 are respectively located on two sides of the weir plate 311, and the weir plate 311 can prevent the oil-water channeling and improve the separation efficiency.
The working process of the underwater three-phase multistage gravity separation injection-production system comprises the following steps: the produced liquid of the oil and gas well at the seabed is input into the whole gravity type separation injection-production system through an input pipeline 6 of the separation injection-production system, firstly, the oil well enters the three-stage column type gas-liquid cyclone separator 5 for gas-liquid separation through an inlet pipeline 501 of the three-stage column type gas-liquid cyclone separator, according to the liquid amount to be treated and the gas content, the stage number of the single-stage column type gas-liquid cyclone separator participating in gas-liquid separation can be controlled by controlling the opening and closing of the first-stage three-way valve 507, the second-stage three-way valve 508, the two-way valve 509, the first-stage stop valve 503 and the second-stage stop valve 505, therefore, the reasonable configuration of the separation device is realized, and the separated gas phase is collected to the total gas phase outlet pipeline 510 of the three-stage column type gas-liquid cyclone separator through the gas phase outlet pipeline of each single-stage column type gas-liquid cyclone separator so as to be conveyed to the next link for processing. The separated liquid phase is collected to a total liquid phase outlet pipeline 511 of the three-stage column type gas-liquid cyclone separator through the liquid phase outlet pipelines of the single-stage column type gas-liquid cyclone separators, and then is conveyed to the horizontal three-phase gravity separator 3 through a connecting pipeline 7 for oil-water two-phase separation. The oil-water mixture firstly passes through an inlet component formed by an inlet circular hole baffle 306, an arc-shaped blade movable rotor and a cylindrical barrel 307 thereof, and the inlet component mainly plays the roles of slowing down the flow velocity of liquid flow, changing the direction of the liquid flow, preventing the liquid flow from directly entering the rear end of the separator and avoiding forming a liquid-dead zone. Then the oil-water mixture passes through the rectifying component and the collecting component which are composed of the rotatable blade baffle group 308, the circular hole baffle group 309 and the electrostatic coalescence electrode plate 310 in sequence. The kinetic energy consumed when the kinetic energy is transferred to the blades of the rotatable blade baffle group 308 and passes through the circular holes of the circular hole baffle group 309 is utilized, so that the flow field in the separator gradually tends to be stable, the retention time of liquid flow in the separator is prolonged, and the separation effect of the gravity separator is improved. Under the electrostatic coalescence action of the electrostatic coalescence electrode plate 310, the coalescence speed of the small liquid drops can be accelerated, so that the speed and the effect of oil-water gravity separation are further improved. Under the action of the rectifying component and the aggregation component, oil and water gradually begin to stratify, a water phase with relatively high density is mainly settled at the bottom of the separator, and is conveyed to the transition liquid storage tank 10 on the integral support structure 1 through a water phase outlet pipeline 304 on the left side of the weir plate 311, and then is conveyed to the water phase conveying booster pump 9 through a corresponding pipeline, and is pressurized by the water phase conveying booster pump 9 and then is injected back into the stratum, so that the effect of maintaining the ground pressure is achieved. And the oil phase with relatively low density floats on the surface layer of the liquid flow, when the liquid flow reaches a certain height, the oil phase flows over the weir plate 311 and enters the tail end of the separator, is conveyed to the oil phase conveying booster pump 11 on the integral support structure 1 through the oil phase outlet pipeline 305 of the horizontal gravity separator on the right side of the weir plate 311, and is lifted to the oil storage device of the seabed or offshore platform after being pressurized by the oil phase conveying booster pump 11. And the gas phase remained in the oil-water mixture is collected and conveyed to the gas phase conveying booster pump 8 on the integral support structure 1 together with the gas phase separated from the total gas phase outlet pipeline 510 of the three-stage gas-liquid cyclone separator through the gas phase outlet pipeline at the top of the separator, and is also conveyed to the next link for next treatment after being boosted by the gas phase conveying booster pump 8.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (8)
1. The underwater three-phase multistage gravity type separation injection and production system is characterized by comprising an integral support structure, a three-level column type gas-liquid cyclone separator, a horizontal three-phase gravity separator, a gas-phase boosting conveying pump, a water-phase boosting conveying pump, an oil-phase boosting conveying pump and a transition liquid storage tank, wherein the three-level column type gas-liquid cyclone separator, the horizontal three-phase gravity separator, the gas-phase boosting conveying pump, the water-phase boosting conveying pump, the oil-phase boosting conveying pump and the transition liquid storage tank are all located inside the integral support structure, produced liquid of a submarine oil-gas well enters the three-level column type gas-liquid cyclone separator through an input pipeline of the separation injection and production system, liquid-phase media separated by the three-level column type gas-liquid cyclone separator enters the horizontal three-level gravity separator through a connecting pipeline, and gas, water and oil three-phase outlets are arranged on the horizontal three-level gravity separator, The separated water phase medium is connected with a transition liquid storage tank through a water phase outlet pipeline and then is conveyed to a water phase pressurizing conveying pump through a connecting pipeline, and is injected back into the stratum after being pressurized by the water phase pressurizing conveying pump, the separated oil phase medium is connected with the oil phase pressurizing conveying pump through an oil phase outlet and is lifted to an oil storage device of the seabed or an offshore platform through the oil phase pressurizing conveying pump, the gas phase medium obtained by the separation of the three-stage column type gas-liquid cyclone separator and the gas phase medium still remained in the liquid phase medium obtained by the separation of the horizontal three-phase gravity separator are respectively merged into the same conveying pipeline through respective gas phase outlet pipelines, are connected with the gas phase pressurizing conveying pump and are conveyed to a gas phase treatment station through the gas phase pressurizing conveying pump;
the three-stage column type gas-liquid cyclone separator consists of three single-stage column type gas-liquid cyclone separators, three-way valves are respectively arranged between the first-stage column type gas-liquid cyclone separator and the second-stage column type gas-liquid cyclone separator and between the second-stage column type gas-liquid cyclone separator and the third-stage column type gas-liquid cyclone separator, produced liquid of a seabed oil-gas well enters the first-stage column type gas-liquid cyclone separator through an input pipeline, liquid phase outlet pipelines of the first-stage column type gas-liquid cyclone separator and the second-stage column type gas-liquid cyclone separator are divided into two pipelines through the three-way valve, one pipeline is connected with an inlet pipeline of the next-stage column type gas-liquid cyclone separator, the other pipeline is converged into a main liquid phase outlet pipeline of the three-stage column type gas-liquid cyclone separator, a two-way valve is arranged at the liquid phase outlet pipeline of the third-stage column type gas-liquid cyclone separator, and separated liquid phase medium is converged into the main liquid phase outlet pipeline after passing through the two-way valve, gas phase outlet pipelines positioned at the tops of the three single-stage column type gas-liquid cyclone separators are converged into a gas phase main outlet pipeline of the three-stage column type gas-liquid cyclone separators, and stop valves are arranged at the gas phase outlet pipelines at the column type gas-liquid cyclone separators of the second stage and the third stage.
2. The underwater three-phase multi-stage gravity separation injection and production system of claim 1, wherein: the horizontal three-phase gravity separator consists of a separator body, a fluid input pipeline of the horizontal gravity separator, an electrode control box, a gas phase outlet pipeline of the horizontal gravity separator, a water phase outlet pipeline of the horizontal gravity separator, an oil phase outlet pipeline of the horizontal gravity separator, an inlet circular hole baffle, an arc-shaped blade movable rotor and a cylinder thereof, a rotatable blade baffle group, a circular hole baffle group, an electrostatic coalescence electrode plate and a weir plate, wherein the separator body consists of a cylinder at the middle part and hemispheres positioned at two sides, the fluid input pipeline of the horizontal three-phase gravity separator is connected into the horizontal separator along the direction parallel to the axis of the separator body, two mutually vertical semicircular inlet circular hole baffles are arranged in the area near an inlet in the separator body, the arc-shaped blade movable rotor and the cylinder thereof are arranged below the inlet circular hole baffles, and the rotatable blade baffle group is sequentially arranged from an inlet area gradually deep into the separator, The separator comprises a circular hole baffle group, an electrostatic coalescence electrode plate and a weir plate, wherein an electrode control box is arranged right above the electrostatic coalescence electrode plate, a gas phase outlet pipeline of a horizontal gravity separator is arranged at the top of one side of a separator main body, which is far away from an inlet area, an oil phase outlet pipeline of the horizontal three-phase gravity separator is positioned at one end, which is far away from the inlet area, of the separator, and a water phase outlet pipeline of the horizontal three-phase gravity separator is arranged in the middle of the separator.
3. The underwater three-phase multi-stage gravity type separation injection-production system of claim 2, characterized in that: the circular hole baffle group is composed of three groups of circular hole baffles with different baffle intervals and circular hole densities, the distance between each group of circular hole baffles gradually decreases along the direction of gradually keeping away from the inlet along the axis of the separator, and the circular hole densities also gradually become sparse.
4. The underwater three-phase multi-stage gravity separation injection and production system of claim 2, wherein: the electrostatic coalescence electrode plates are a group of parallel grid plate structures which are distributed at non-equal intervals along the direction vertical to the axial line of the separator, and the closer to the bottom of the separator, the larger the distance between the electrode plates is.
5. The underwater three-phase multi-stage gravity separation injection and production system of claim 2, wherein: the weir plate is positioned at the rear end of the separator and is of a semicircular baffle structure, and a water phase outlet pipeline of the horizontal gravity separator and an oil phase outlet pipeline of the horizontal gravity separator are respectively positioned at two sides of the weir plate.
6. The underwater three-phase multi-stage gravity separation injection and production system of claim 2, wherein: the number of the water phase outlet pipelines of the horizontal gravity separator is four, the water phase outlet pipelines are distributed in the middle of the separator main body at unequal intervals, and the closer to the oil phase outlet pipeline of the horizontal gravity separator, the smaller the interval between the water phase outlet pipelines of each horizontal gravity separator is.
7. The underwater three-phase multi-stage gravity separation injection and production system according to any one of claims 1 to 6, wherein: the three-stage column type gas-liquid cyclone separator, the horizontal three-phase gravity separator, the gas-phase booster conveying pump, the water-phase booster conveying pump and the oil-phase booster conveying pump are all provided with independent supporting brackets.
8. The underwater three-phase multi-stage gravity separation injection and production system according to any one of claims 1 to 6, wherein: the integral support structure comprises a bottom platform and an upper support, the bottom platform is a rectangular flat plate structure with an upper layer and a lower layer, the upper layer platform and the lower layer platform are separated from each other through a blank groove structure, and the three-stage column type gas-liquid cyclone separator and a support bracket thereof, the horizontal three-phase gravity separator and a support bracket thereof, the three groups of booster conveying pumps, the transition liquid storage tank and the connecting pipeline are all placed on the upper layer platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504895.4A CN112780249B (en) | 2020-12-18 | 2020-12-18 | Underwater three-phase multi-stage gravity type separation injection-production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011504895.4A CN112780249B (en) | 2020-12-18 | 2020-12-18 | Underwater three-phase multi-stage gravity type separation injection-production system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112780249A CN112780249A (en) | 2021-05-11 |
| CN112780249B true CN112780249B (en) | 2022-09-27 |
Family
ID=75751256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011504895.4A Active CN112780249B (en) | 2020-12-18 | 2020-12-18 | Underwater three-phase multi-stage gravity type separation injection-production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112780249B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE529771C2 (en) * | 2005-04-29 | 2007-11-20 | Gl & V Man Hungary Kft Hermina | Hydrocyclone unit and method for separating a fiber pulp suspension containing relatively heavy impurities |
| CN2930824Y (en) * | 2005-09-27 | 2007-08-08 | 邓志安 | Water and sand separation apparatus for oil and gas |
| EP1779911A1 (en) * | 2005-10-28 | 2007-05-02 | M-I Epcon As | A separator tank |
| CN103785552B (en) * | 2012-11-05 | 2015-07-08 | 中国石油化工股份有限公司 | Fence type oil-gas-water three-phase separation device |
| CN103883305B (en) * | 2014-01-20 | 2014-12-24 | 中国石油大学(华东) | Deepwater seabed oil and water separation and reinjection device |
| CN104689931B (en) * | 2014-12-31 | 2017-06-30 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of high-pressure gas-liquid separation method |
| CN106032473A (en) * | 2015-03-21 | 2016-10-19 | 李庆银 | High-frequency electric coalescence type high-efficiency oil-gas-water three-phase separator |
| CN107383215B (en) * | 2017-08-18 | 2020-04-21 | 温州市康而达实业有限公司 | Starch refining device with pre-concentration rotational flow system and clarification washing system |
| CN209020602U (en) * | 2018-09-30 | 2019-06-25 | 云南省澄江县藕粉厂 | Multi-stage multi-pipe formula spiral liquid separation device |
| CN110529095B (en) * | 2019-09-04 | 2021-08-20 | 中国石油大学(华东) | Deep sea parallel multiphase multistage separation reinjection system |
-
2020
- 2020-12-18 CN CN202011504895.4A patent/CN112780249B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112780249A (en) | 2021-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101810941B (en) | Compound oil-water separation system | |
| CN115321633B (en) | High-efficient cyclone floats splitter | |
| CN209838390U (en) | Oil well produced liquid near centralized processing system | |
| RU2681140C2 (en) | Flotation installation | |
| CN204865094U (en) | High -efficient marine oil gas production oil gas water three -phase separator | |
| CN108222914B (en) | Membrane material underground oil-water separation device, production pipe column and oil-water separation method | |
| CN110902758A (en) | Single-stage, multi-stage and variable-stage rotational flow air flotation oily sewage treatment device | |
| CN102251765A (en) | Axial type inlet oil-water cyclone separator | |
| CN104747162A (en) | Multiphase multistage separation type re-injection system used in deep sea | |
| CN108191001B (en) | A kind of oily-water seperating equipment | |
| CN112780249B (en) | Underwater three-phase multi-stage gravity type separation injection-production system | |
| CN103045295A (en) | Water removing system for gas-water-containing crude oil and application method of system | |
| CN210457711U (en) | Multistage oil separation tank | |
| CN203315803U (en) | Compact type underwater gas-liquid separation system | |
| CN116675385A (en) | Air-float synergistic oil-water separation treatment device | |
| CN101837200A (en) | Industrial oil water separation method and system thereof | |
| CN116877045A (en) | Gas lift reinforced oil-gas-water three-phase cyclone separator in same-well injection-production shaft | |
| CN217661665U (en) | Multiphase fluid mixed transportation water-gas separation device | |
| CN107557058B (en) | Compact combined flash crude oil degassing method and device | |
| CN110529095B (en) | Deep sea parallel multiphase multistage separation reinjection system | |
| CN108434785A (en) | A kind of oily-water seperating equipment and application | |
| CN207920596U (en) | Deep-sea oil gas water separation device | |
| CN202892983U (en) | Oil-gas-water phase separation skid-mounted pressurizing device | |
| CN113323645A (en) | Separation method and separation device for oil, gas and water at well mouth and application of separation device | |
| CN106730985A (en) | Extraction equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |