CN106837292B - Ground process treatment system and method for different treatment scales of multilayer station yard - Google Patents
Ground process treatment system and method for different treatment scales of multilayer station yard Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 173
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 126
- 238000010438 heat treatment Methods 0.000 claims abstract description 70
- 238000012546 transfer Methods 0.000 claims abstract description 32
- 238000003860 storage Methods 0.000 claims abstract description 26
- 239000010779 crude oil Substances 0.000 claims abstract description 23
- 239000000446 fuel Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 10
- 238000011161 development Methods 0.000 abstract description 8
- 230000018109 developmental process Effects 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 abstract description 3
- 230000033772 system development Effects 0.000 abstract description 3
- 239000010729 system oil Substances 0.000 abstract 1
- 239000003129 oil well Substances 0.000 description 9
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 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
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Abstract
The invention relates to a ground process treatment system and method with different treatment scales for a multilayer system station yard, wherein an incoming oil pipe of each layer system is converged and sequentially connected with a ball collecting barrel, a heating furnace and an oil-gas-water three-phase separator, and oil outlets of all the oil-gas-water three-phase separators are sequentially connected with an overflow settling tank, a purified oil storage tank and an oil transfer pump and then connected with a crude oil output pipeline; the oil-coming manifold, the ball-collecting barrel, the heating furnace and the oil-gas-water three-phase separator of each layer system are also communicated with other layer systems through the manifolds; the invention solves the problem of crude oil processing scale proportion distribution under the premise of uncertain double-layer system development scale by 'series-parallel connection of different equipment at different levels' and 'series-parallel connection of different equipment at the same level', optimizes the ground process of a multi-layer system oil field gathering and transportation station, reduces energy consumption, saves ground construction investment and improves comprehensive utilization benefit of oil field development.
Description
Technical Field
The invention belongs to the technical field of oil and gas field crude oil exploitation, and particularly relates to a ground process treatment system and method with different treatment scales for a multilayer system station yard, in particular to a gathering and transportation treatment system and method for in-station oil collection, heating, dehydration and crude oil pressurization and outward transportation in oil field ground construction engineering.
Background
As the capacity construction requirements of the Changqing oil field are as follows: the method is characterized by comprising the following steps of constructing a plurality of stations in a construction site, having large scale (nearly 10 combined stations are constructed and 50 stations are connected and converted every year), having fast rhythm, frequent deployment and adjustment, adopting a multi-layer system superposition development mode (which relates to a double-layer system and a multi-layer system station field and is more than half), and simultaneously adopting a rolling development mode, developing, recognizing and adjusting simultaneously, wherein the rolling development mode has a plurality of uncertain factors and large change, so that the processing scale proportion of a plurality of layers cannot be determined. This uncertainty severely restricts the choice of equipment and process flow in the cogeneration plant. In view of the fact that land acquisition and investment reduction of large and medium-sized stations are achieved, repeated reconstruction is avoided through one-time construction, and how to adapt to the situation that the development scale of a multi-layer oil field is uncertain, the flow of a dewatering system is reasonably set, the problem of flow distribution in different scale proportions is solved, and the requirement of adapting to the development, adjustment and change needs is required.
Disclosure of Invention
The invention aims to optimize the ground process of the multi-layer oil field gathering and transportation station, reduce energy consumption, save ground construction investment and improve comprehensive utilization benefit of oil field development.
Therefore, the invention provides a ground process treatment system with different treatment scales for a multilayer system station, which comprises a plurality of series of incoming oil pipes, wherein the incoming oil pipe of each series of series is sequentially connected with a ball collecting barrel, a heating furnace and an oil-gas-water three-phase separator, gas outlets of all the oil-gas-water three-phase separators are connected to an associated gas knockout together, water outlets of all the oil-gas-water three-phase separators are connected to a water treatment system together, oil outlets of all the oil-gas-water three-phase separators are sequentially connected with an overflow settling tank, a purified oil storage tank and an oil transfer pump and then connected with a crude oil output pipeline; the heating furnace is also directly communicated with the overflow settling tank through a manifold, and an oil outlet of the oil-gas-water three-phase separator is also directly communicated with an oil transfer pump through the manifold;
the incoming oil manifold of each bed series is also communicated with the ball collecting barrel of other bed series through the manifold; the ball collecting cylinder of each layer is also communicated with the heating furnaces of other layers through a manifold; the heating furnace of each layer series is also communicated with the oil-gas-water three-phase separator or the overflow settling tank of other layer series through a manifold;
all the connecting manifolds are provided with valves.
And a gas outlet of the associated gas dispenser is communicated to the heating furnace.
A ground process treatment system with different treatment scales for a double-layer system station yard comprises an incoming oil manifold A and an incoming oil manifold B, wherein the incoming oil manifold A is sequentially connected with a ball collecting barrel A, a heating furnace A and an oil-gas-water three-phase separator A, the incoming oil manifold B is sequentially connected with a ball collecting barrel B, a heating furnace B and an oil-gas-water three-phase separator B, and gas outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are connected to an associated gas knockout together; the water outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are connected to a water treatment system together; the oil outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are sequentially connected with an overflow settling tank, a purified oil storage tank and an oil transfer pump and then connected with a crude oil output pipeline;
the heating furnace A and the heating furnace B are also directly communicated with an overflow settling tank through a manifold, and oil outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are also directly communicated with an oil transfer pump through a manifold;
the oil inlet manifold A is also communicated with the ball collecting barrel B through a manifold, and the oil inlet manifold B is also communicated with the ball collecting barrel A through a manifold; the ball collecting cylinder A is also communicated with a heating furnace B through a manifold, and the ball collecting cylinder B is also communicated with the heating furnace A through the manifold; the heating furnace A is also communicated with an oil-gas-water three-phase separator B through a manifold, and the heating furnace B is also communicated with the oil-gas-water three-phase separator A through the manifold;
all connecting manifolds are provided with valves.
And gas outlets of the associated gas dispenser are respectively communicated to the heating furnace A and the heating furnace B.
A ground process treatment method for different treatment scales of a multilayer system station yard comprises the following steps:
1) The layer of water-bearing oil pipes collect the water-bearing oil conveyed from the surrounding well sites, and then enter the ball collecting barrel through the pipeline valve assembly to collect balls;
2) Well liquid conveyed from a well site with the temperature of 3 ℃ in a ball collecting barrel enters a heating furnace and is heated to 55 ℃;
3) The well fluid heated by the heating furnace enters an oil-gas-water three-phase separator or directly enters an overflow settling tank;
4) The associated gas of each layer system separated by the oil-gas-water three-phase separator enters an associated gas knockout together, and the associated gas separated by the associated gas knockout enters a heating furnace as fuel; the dehydrated water of each layer separated by the oil-gas-water three-phase separator enters a water treatment system together for subsequent water treatment, and is reinjected after the treatment is qualified; the purified oil of each layer system separated by the oil-gas-water three-phase separator is transported to the next gathering station after passing through the overflow settling tank, the purified oil storage tank and the oil transportation pump in sequence.
The purified oil of each layer system separated by the oil-gas-water three-phase separator in the step 4) is divided into qualified oil and unqualified oil, and if the separated purified oil is unqualified, the oil passes through an overflow settling tank, a purified oil storage tank and an oil transfer pump in sequence and then is transported to the next gathering and transportation station; if the separated purified oil is qualified, the oil directly enters an oil transfer pump, and is pressurized by the oil transfer pump and then is output to the next gathering and transportation station.
The oil-gas-water three-phase separator is characterized in that the oil inlet pipes in each layer system are mutually connected in parallel for standby, the ball collecting barrels in each layer system are mutually connected in parallel for standby, the heating furnaces in each layer system are mutually connected in parallel for standby, and the oil-gas-water three-phase separator in each layer system is mutually connected in parallel for standby.
The ground process treatment system and method of the multilayer station yard with different treatment scales provided by the invention have the beneficial effects that:
1. the process treatment method realizes the full-closed treatment of the multilayer system.
2. The processing method solves the problem of crude oil processing scale proportion distribution on the premise of uncertain double-layer system development scale through the series-parallel connection of different equipment (a heating furnace, an oil-gas-water three-phase separator and an overflow settling tank) at different layers and the series-parallel connection of different equipment (the oil-gas-water three-phase separator and the overflow settling tank) at the same layer.
3. The process treatment method improves the adaptability of the station yard and reduces the construction period and the construction investment by realizing the adjustment of the valve assembly.
4. The production operation is convenient, and the heating furnace fuel is saved.
Drawings
The present invention will be described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the system architecture of the present invention.
Description of reference numerals: 1. an incoming oil manifold; 2. a ball collecting cylinder; 3. heating furnace; 4. an oil-gas-water three-phase separator; 5. associated gas knockout; 6. an overflow settling tank; 7. a purified oil storage tank; 8. an oil transfer pump.
Detailed Description
Example 1:
the embodiment provides a ground process treatment system of a multilayer system station yard with different treatment scales, as shown in fig. 1, comprising a plurality of series of incoming oil manifolds 1, wherein the incoming oil manifold 1 of each series of series is sequentially connected with a ball collecting barrel 2, a heating furnace 3 and an oil-gas-water three-phase separator 4, gas outlets of all the oil-gas-water three-phase separators 4 are connected to an associated gas dispenser 5 together, and a gas outlet of the associated gas dispenser 5 is communicated to the heating furnace 3; the water outlets of all the oil-gas-water three-phase separators 4 are connected to a water treatment system, and the oil outlets of all the oil-gas-water three-phase separators 4 are sequentially connected with an overflow settling tank 6, a purified oil storage tank 7 and an oil transfer pump 8 and then connected with a crude oil output pipeline; the heating furnace 3 is also directly communicated with an overflow settling tank 6 through a manifold, and an oil outlet of the oil-gas-water three-phase separator 4 is also directly communicated with an oil transfer pump 8 through the manifold;
the incoming oil manifold 1 of each bed series is also communicated with the ball collecting barrel 2 of other bed series through a manifold; the ball collecting barrel 2 of each layer is also communicated with the heating furnaces 3 of other layers through a manifold; the heating furnace 3 of each layer series is also communicated with the oil-gas-water three-phase separator 4 or the overflow settling tank 6 of other layer series through a manifold;
all connecting manifolds are provided with valves.
In the embodiment, the problem of proportional allocation of crude oil processing scale on the premise of uncertain double-layer system development scale is solved by 'series-parallel connection of different equipment at different levels' and 'series-parallel connection of different equipment at the same level', so that the energy consumption is reduced, and the ground construction investment is saved.
Example 2:
as shown in fig. 1, a ground process treatment system with different treatment scales for a double-layer system station comprises an incoming oil manifold a and an incoming oil manifold B, wherein the incoming oil manifold a is sequentially connected with a ball collecting cylinder a, a heating furnace a and an oil-gas-water three-phase separator a, the incoming oil manifold B is sequentially connected with a ball collecting cylinder B, a heating furnace B and an oil-gas-water three-phase separator B, gas outlets of the oil-gas-water three-phase separator a and the oil-gas-water three-phase separator B are connected to an associated gas dispenser 5 together, and a gas outlet of the associated gas dispenser 5 is respectively communicated with the heating furnace a and the heating furnace B; the water outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are connected to a water treatment system together; the oil outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are sequentially connected with an overflow settling tank 6, a purified oil storage tank 7 and an oil transfer pump 8 and then connected with a crude oil output pipeline;
the heating furnace A and the heating furnace B are also directly communicated with the overflow settling tank 6 through a manifold, and oil outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are also directly communicated with an oil transfer pump 8 through a manifold;
the incoming oil manifold A is also communicated with the ball collecting barrel B through a manifold, and the incoming oil manifold B is also communicated with the ball collecting barrel A through a manifold; the ball collecting cylinder A is also communicated with a heating furnace B through a manifold, and the ball collecting cylinder B is also communicated with the heating furnace A through the manifold; the heating furnace A is also communicated with an oil-gas-water three-phase separator B through a manifold, and the heating furnace B is also communicated with the oil-gas-water three-phase separator A through the manifold;
all the connecting manifolds are provided with valves.
The A series oil well is connected with an oil inlet pipe manifold A through a pipeline valve assembly, the oil inlet pipe manifold A is connected with an inlet of a ball collecting cylinder A through the pipeline valve assembly, an outlet of the ball collecting cylinder A is connected to a crude oil inlet of a heating furnace A, a crude oil outlet of the heating furnace A is connected with an inlet of an oil gas-water three-phase separator A through the pipeline valve assembly, the crude oil can also directly enter an overflow settling tank 6 and then enter a purified oil storage tank 7, and purified oil after passing through the purified oil storage tank 7 enters an oil transfer pump 8 and is output to a next gathering and transportation station.
The B series oil well is connected with an incoming oil pipe manifold B through a pipeline valve assembly, the incoming oil pipe manifold B is connected with an inlet of a ball collecting barrel B through the pipeline valve assembly, an outlet of the ball collecting barrel B is connected with a crude oil inlet of a heating furnace B, a crude oil outlet of the heating furnace B is connected with an inlet of an oil gas-water three-phase separator B through the pipeline valve assembly, the incoming oil gas-water three-phase separator B can also directly enter an overflow settling tank 6 and then enter a purified oil storage tank 7, and purified oil after passing through the purified oil storage tank 7 enters an oil transfer pump 8 and is output to a next gathering and transportation station.
When the scale of the oil well of the layer A is larger, the scale of the oil well B is smaller, the oil well A is also connected with an oil inlet pipe manifold A through a pipeline valve assembly, the oil inlet pipe manifold A is connected with an inlet of a ball collecting cylinder A through the pipeline valve assembly, an outlet of the ball collecting cylinder A is connected to a crude oil inlet of a heating furnace B, and a crude oil outlet of the heating furnace B is connected with an inlet of an oil-gas-water three-phase separator B through the pipeline valve assembly.
When the scale of the oil well of the layer B is larger, the scale of the oil well A is reduced, the oil well A is also connected with an oil inlet manifold B through a pipeline valve assembly, the oil inlet manifold B is connected with an inlet of a ball collecting cylinder B through the pipeline valve assembly, an outlet of the ball collecting cylinder B is connected to an inlet of a crude oil inlet of a heating furnace A, and an outlet of the crude oil of the heating furnace A is connected with an inlet of an oil-gas-water three-phase separator A through the pipeline valve assembly.
Qualified oil outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are connected with an inlet of an oil transfer pump 8, and an outlet of the oil transfer pump 8 is connected with a crude oil output pipeline.
The oil of oil gas water three-phase separator A is unqualified, then oil gas water three-phase separator A's export gets into overflow settling cask 6, carries out the secondary and subsides, and 6 exports of overflow settling cask insert the import that purifies oil storage tank 7, and the exit linkage fuel delivery pump 8 of purifying oil storage tank 7 enters the mouth, and the fuel delivery pump 8 exit linkage crude oil outward pipeline.
The oil of oil gas water three-phase separator B is unqualified, then the export of oil gas water three-phase separator B gets into overflow settling cask 6, carries out the secondary and subsides, and 6 exports of overflow settling cask insert the import that purifies oil storage tank 7, and the exit linkage fuel delivery pump 8 of purifying oil storage tank 7 enters the mouth, and the fuel delivery pump 8 exit linkage crude oil outward pipeline.
The gas outlets of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B are connected to the associated gas knockout 5, and the outlet of the associated gas knockout 5 is connected to the gas inlets of the heating furnace A and the heating furnace B.
And water outlet dewatering treatment devices of the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B.
Example 3:
the embodiment provides a ground process treatment method for different treatment scales of a multilayer station yard, which comprises the following steps of:
1) The system is that the layer incoming oil manifold 1 receives the water-containing oil delivered from the surrounding well sites, and then enters the ball collecting barrel 2 through the pipeline valve assembly to collect balls;
2) Well liquid conveyed from a well site with the temperature of 3 ℃ through the ball collecting barrel 2 enters the heating furnace 3 and is heated to 55 ℃;
3) The well fluid heated by the heating furnace 3 enters an oil-gas-water three-phase separator 4 or directly enters an overflow settling tank 6;
4) The associated gas of each layer system separated by the oil-gas-water three-phase separator 4 enters an associated gas knockout 5 together, and the associated gas separated by the associated gas knockout enters the heating furnace 3 as fuel; the dehydrated water of each layer system separated by the oil-gas-water three-phase separator 4 enters a water treatment system together for subsequent water treatment, and is reinjected after the treatment is qualified; the purified oil of each layer system separated by the oil-gas-water three-phase separator 4 passes through the overflow settling tank 6, the purified oil storage tank 7 and the oil transfer pump 8 in sequence and then is output to the next gathering and transportation station.
The purified oil of each layer system separated by the oil-gas-water three-phase separator 4 in the step 4) is divided into qualified oil products and unqualified oil products, and if the separated purified oil products are unqualified, the oil passes through the overflow settling tank 6, the purified oil storage tank 7 and the oil transfer pump 8 in sequence and then is transported to the next gathering and transportation station; if the separated purified oil is qualified, the purified oil directly enters the oil transfer pump 8 and is pressurized by the oil transfer pump 8 and then is output to the next gathering and transportation station.
The present embodiment is described in detail by taking a double-layer station as an example, as shown in fig. 1:
the layer A is an oil pipe manifold A which receives the water-containing oil conveyed from the surrounding well sites, and after passing through a ball collecting cylinder A, well liquid conveyed from the well sites with the temperature of 3 ℃ is mixed and then is conveyed into a heating furnace A to be heated to 55 ℃; the well fluid that the well site carried after the heating has two ways outputs, and two ways are each other for subsequent use:
if the three-phase separator is adopted for dehydration, the oil gas and the water directly enter the oil gas and water three-phase separator A for oil gas and water three-phase separation, and the oil gas and the water separated by the oil gas and water three-phase separator A are output in 3 paths.
(1) The separated purified oil is qualified and then directly enters the oil transfer pump 8, and is pressurized by the oil transfer pump 8 and then is output to the next gathering and transportation station.
And the separated purified oil is unqualified, enters the overflow settling tank 6, then enters the purified oil storage tank 7, and enters the oil transfer pump 8 to be transferred to the next gathering and transportation station.
(2) The gas outlet of the associated gas separated by the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B is connected to the associated gas knockout 5, and the outlet of the associated gas knockout 5 is connected to the gas inlet of the heating furnace A and the heating furnace B.
(3) And the sewage separated by the oil-gas-water three-phase separator A and the oil-gas-water three-phase separator B is drained from a water outlet to a water treatment device, and is reinjected after being qualified.
And the other way is to adopt an overflow settling tank for dehydration, well liquid conveyed from a well site after heating directly enters the overflow settling tank 6, then enters a purified oil storage tank 7, and purified oil passing through the purified oil storage tank 7 enters an oil transfer pump 8 and is conveyed to the next gathering and transportation station.
In the same way, the layer B can also realize the functions.
Example 4:
in the embodiment, the incoming oil manifolds 1 in each layer system are connected in parallel to reserve, the ball receiving barrels 2 in each layer system are connected in parallel to reserve, the heating furnaces 3 in each layer system are connected in parallel to reserve, and the oil-gas-water three-phase separators 4 in each layer system are connected in parallel to reserve, so that when the well fluid of a certain layer system is enlarged, the oil-gas-water three-phase separators can be divided by other layer systems.
Taking the double-layer system station as an example, when the scale of the layer A is increased and the scale of the layer B is decreased in the later period, the part of the equipment, which is connected into the layer B by the pipeline valve assembly, of the layer A is mutually standby.
For example, the standby flow of the heating furnace 3 is as follows:
when the oil well of the layer A is large in scale, the system is connected with an incoming pipe manifold A of the layer A through a pipeline valve assembly, the incoming pipe manifold A is connected with an inlet of a ball collecting barrel A through the pipeline valve assembly, well liquid conveyed from a well site with the temperature of 3 ℃ is mixed and then is conveyed into a heating furnace B to be heated to 55 ℃; the well fluid delivered from the heated well site has two output paths:
one way is that if a three-phase separator is adopted for dehydration, the oil gas water enters the oil gas water three-phase separator A directly for oil gas water three-phase separation, and oil gas water separated by the oil gas water three-phase separator A is output in 3 ways.
And the other path is that an overflow settling tank is adopted for dehydration, well liquid conveyed from a well site after being heated directly enters the overflow settling tank 6, then enters a purified oil storage tank 7, and purified oil passing through the purified oil storage tank 7 enters an oil transfer pump 8 and is transferred to the next gathering and transportation station.
Similarly, the ball collecting barrel 2 and the oil-gas-water three-phase separator 4 can be standby equipment of two layer systems.
Similarly, the B layer can realize the functions after being enlarged.
In conclusion, the invention provides a novel method for processing multilayer oil field gathering and transportation stations in different scales, so that the ground process of the multilayer oil field gathering and transportation stations is optimized, the energy consumption is reduced, the ground construction investment is saved, and the comprehensive utilization benefit of oil field development is improved.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (1)
1. A ground process treatment system with different treatment scales for a multilayer station yard is characterized in that: the device comprises a coming oil pipe manifold (1) of a plurality of series, wherein the coming oil pipe manifold (1) of each series is sequentially connected with a ball collecting barrel (2), a heating furnace (3) and an oil-gas-water three-phase separator (4), gas outlets of all the oil-gas-water three-phase separators (4) are connected to an associated gas dispenser (5), water outlets of all the oil-gas-water three-phase separators (4) are connected to a water treatment system, oil outlets of all the oil-gas-water three-phase separators (4) are sequentially connected with an overflow settling tank (6), a purified oil storage tank (7) and an oil transfer pump (8) and then connected with a crude oil output pipeline; the heating furnace (3) is also directly communicated with the overflow settling tank (6) through a manifold, and an oil outlet of the oil-gas-water three-phase separator (4) is also directly communicated with an oil transfer pump (8) through the manifold;
the oil inlet manifold (1) of each series is also communicated with the ball collecting barrels (2) of other series through the manifold; the ball collecting cylinder (2) of each layer is also communicated with the heating furnaces (3) of other layers through a manifold; the heating furnace (3) of each layer series is also communicated with the oil-gas-water three-phase separator (4) or the overflow settling tank (6) of other layer series through a manifold, all connecting manifolds are provided with valves, and the gas outlet of the associated gas knockout (5) is communicated to the heating furnace (3);
the ground process treatment method of the multilayer station yard with different treatment scales is characterized by comprising the following steps of: the method comprises the following steps:
1) The system is characterized in that a water-containing oil conveyed from a peripheral well site is received by a layer of incoming oil pipe manifold (1) and enters a ball collecting barrel (2) through a pipeline valve assembly to collect balls;
2) Well liquid conveyed from a well site with the temperature of 3 ℃ through the ball collecting barrel (2) enters the heating furnace (3) to be heated to 55 ℃;
3) The well fluid heated by the heating furnace (3) enters an oil-gas-water three-phase separator (4) or directly enters an overflow settling tank (6);
4) The associated gas of each layer separated by the oil-gas-water three-phase separator (4) enters an associated gas knockout (5) together, and the associated gas separated by the associated gas knockout enters a heating furnace (3) as fuel; the dehydrated water of each layer system separated by the oil-gas-water three-phase separator (4) enters a water treatment system together for subsequent water treatment, and is reinjected after the treatment is qualified; purified oil of each layer system separated by the oil-gas-water three-phase separator (4) passes through an overflow settling tank (6), a purified oil storage tank (7) and an oil transfer pump (8) in sequence and then is output to a next gathering and transportation station;
the purified oil of each layer system separated by the oil-gas-water three-phase separator (4) in the step 4) is divided into qualified oil products and unqualified oil products, and if the separated purified oil products are unqualified, the oil passes through an overflow settling tank (6), a purified oil storage tank (7) and an oil transfer pump (8) in sequence and then is transported to the next gathering and transportation station; if the separated purified oil is qualified, the purified oil directly enters an oil transfer pump (8), is pressurized by the oil transfer pump (8) and then is output to the next gathering and transportation station;
the oil inlet manifolds (1) in each layer system are mutually connected in parallel for standby, the ball collecting barrels (2) in each layer system are mutually connected in parallel for standby, the heating furnaces (3) in each layer system are mutually connected in parallel for standby, the oil-gas-water three-phase separators (4) in each layer system are mutually connected in parallel for standby, and when the well fluid scale of a certain layer system is increased, the oil-gas-water three-phase separators can be shunted by other layer systems.
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| CN110541698A (en) * | 2019-08-02 | 2019-12-06 | 西安长庆科技工程有限责任公司 | Combined oil-water separation oil-gas mixed transportation produced water on-site reinjection device and method |
| CN115703974A (en) * | 2021-08-05 | 2023-02-17 | 中国石油天然气集团有限公司 | Three-dimensional three-phase separation device |
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| US8616283B2 (en) * | 2009-12-11 | 2013-12-31 | E I Du Pont De Nemours And Company | Process for treating water in heavy oil production using coated heat exchange units |
| CN102654245B (en) * | 2012-05-15 | 2013-07-31 | 中国石油天然气股份有限公司 | Method and device for series overlapped development of small-type station field gathering and transferring treatment |
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| CN104763403B (en) * | 2015-03-26 | 2017-07-25 | 西安长庆科技工程有限责任公司 | A kind of ground high-low pressure gas-liquid mixture piece-rate system that gas production field is closed based on multi-reservoir |
| CN206647093U (en) * | 2017-03-24 | 2017-11-17 | 西安长庆科技工程有限责任公司 | A kind of surface technology processing system of more series of strata yard different disposal scales |
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| CN201381836Y (en) * | 2009-01-12 | 2010-01-13 | 西安长庆科技工程有限责任公司 | Oilfield multiwell short-distance cascading oil collecting device |
| RU123684U1 (en) * | 2012-08-27 | 2013-01-10 | Общество с ограниченной ответственностью "Газпром добыча Ямбург" | INSTALLATION OF PREPARATION OF GAS-CONDENSATE FLUID AND STABILIZATION OF CONDENSATE |
| 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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