CN107816636B - Supercharging device and supercharging method for oil well metering station - Google Patents
Supercharging device and supercharging method for oil well metering station Download PDFInfo
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- CN107816636B CN107816636B CN201710477727.2A CN201710477727A CN107816636B CN 107816636 B CN107816636 B CN 107816636B CN 201710477727 A CN201710477727 A CN 201710477727A CN 107816636 B CN107816636 B CN 107816636B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Water Supply & Treatment (AREA)
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Abstract
The invention discloses a supercharging device for an oil well metering station, which comprises a separator, wherein one end of the separator is connected with a multi-well liquid inlet pipeline, and oil-gas-water separation equipment aiming at liquid inlet of the multi-well liquid inlet pipeline is arranged in the separator; the other end of the separator is connected with a single-well liquid inlet pipeline, and oil-gas-water separation equipment for feeding liquid to the single-well liquid inlet pipeline is arranged in the separator; an oil-water outlet at the lower end of the separator is connected with an inlet of an electric reversing valve through a pipeline; the electric reversing valve is provided with two outlets, one outlet of the electric reversing valve is connected to an inlet of the first booster pump through a pipeline and the first filter, an outlet of the first booster pump is connected to an oil-water outlet pipeline, the other outlet of the electric reversing valve is connected to an inlet of the second booster pump through the second filter and the pipeline, and an outlet of the second booster pump is connected to the oil-water outlet pipeline through the pipeline. The invention adopts an integrated skid-mounted structure, is convenient and quick to construct and install on site, adopts intelligent control, and has high digitization degree.
Description
Technical Field
The invention belongs to the technical field of petroleum, and relates to oil-gas-water metering pressurization, in particular to a pressurization device and a pressurization method for an oil well metering station.
Background
Metering techniques for low-producing wells have been studied for many years, but have not fundamentally solved the problem all the time. As old oil fields enter a high water-cut period, the difficulty of oil well metering is increased. And the requirements of the production development and the operation management are increased on the oilfield metering technology. Therefore, the problem of wellhead metering in the oil field is seriously solved, and the current wellhead metering precision and management level are improved, so that the method has become an important subject to be solved in the oil field production. Attempts have been made to modify the structure of the separator to further improve the process flow to meet the requirements for improved well metering accuracy. Meanwhile, the advanced technology of foreign oil well metering is referred, and the aim of improving the oil field metering technology is fulfilled by modifying the traditional metering flow.
High water content oil well metering characteristics:
1 the water content of the oil well is high and the fluctuation is larger.
When the two-phase metering separator is used for metering high-water-content crude oil, although the flowmeter and the online water-content analyzer can work normally in a measuring range, the measured oil well pure oil yield still has larger error and does not meet the standard requirement. Assuming that the flowmeter for measuring the total liquid amount has no error in operation, the metering error of pure oil caused by a 2.2-100% high-moisture online analyzer with 2.0-level precision (the reliability precision of a general high-moisture analyzer is not higher than 2.0-level) or manual test is shown in Table 1 in detail.
TABLE 1 Water content and pure oil precision error comparison Table
This is the effect on the accuracy of metering of pure oil when the water content measurement error is + -2%.
2. Oil, gas and water three-phase separator
As is clear from Table 1, in order to accurately measure the pure oil amount in the oil well in the high water content period, it is necessary to separate the free water from the mixed solution so that the water content of the crude oil in the oil inlet instrument is reduced to a certain degree (e.g., 30%), and the total measurement accuracy is ensured. The oil, gas and water are separated according to certain requirements by using the three-phase separator, so that the oil, gas and water yield of the oil well can be accurately measured. Practice proves that only the energy is accurate if the energy is clear. Thus, the three-phase separator is a key technology for metering oil wells in high water-cut periods.
3. Foreign well metering conditions: the main characteristics of oil well metering are as follows:
(1) In oil field wellhead metering, the low water content period adopts two-phase separation, the medium water content period adopts three-phase separation, and timing continuous metering is performed. In the oil field construction design, three-phase separators are designed, and in the low water-containing period, the three-phase separators are used as two phases, and in the medium water-containing period, the three-phase separation function is started to be used. The united states oilfield measurement is characterized by a small station flow. The metering station is provided with two sets of devices, namely a metering separator and a production separator, the production separator is used for metering the total output of oil, gas and water of the whole metering station, and a multi-way valve is adopted for well selection in oil well metering.
(2) The three-phase separator is adopted for metering and is mostly matched with an instrument, for example, a flowmeter and an online water-containing analyzer are arranged, and continuous metering can be realized.
(3) The secondary meter of the metering station adopts microcomputer for the acquisition, processing, calculation and output of data such as intellectualization, digitalization, flow, water content and the like, and can display, print and output data such as absolute oil, absolute water, air quantity, water content and the like at any time.
(4) The metering system is generally used for metering each oil well for 8 hours or 24 hours, and the metering period is 7d, 12d and 30 d.
The liquid part of the separator does not always have a clear oil-water interface with oil above and water below in the operating state, but often the top of the liquid part is a pure oil layer with very low water content, the bottom of the separator is a clear water layer, and a water content gradual transition layer is arranged between the clear water layer and the clear water layer. Numerous field experiments over the years have led us to the following valuable experience: (1) interface control is a key technology for success and failure of separators; (2) previous attempts to directly control the oil-water interface with a variety of meters have not been desirable and have been a directional error in improving the accuracy of the meter control. The process conditions play a decisive role in the success or failure of the instrument.
Meanwhile, the crude oil produced by the oil well is in a high back pressure (2.5-5 MPa) production state for a long time due to various reasons such as long well group distance, long oil pipeline, serious wax precipitation of the oil well and the like, so that the normal production of the oil well is seriously affected, the back pressure can reach 6-7MPa in cold weather in winter, and the oil well can hardly produce normally under the condition. The well group's external transportation flow is generally double-barrelled flow, i.e. one time measures pipeline, one time thoughtlessly defeated pipeline, must guarantee that two times pipelines are incessantly defeated oil when defeated oil winter, as long as have one time pipeline stop defeated oil for an hour, will cause the pipeline to lock up, has wasted effective resource, has improved manufacturing cost, has increased workman intensity of labour.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a supercharging device and a supercharging method for an oil well metering station, wherein the supercharging device comprises XC-JHY-93 series products.
The aim of the invention is realized by the following technical scheme:
the supercharging device for the oil well metering station comprises a separator, wherein one end of the separator is connected with a multi-well liquid inlet pipeline, and oil-gas-water separation equipment for feeding liquid to the multi-well liquid inlet pipeline is arranged in the separator; the other end of the separator is connected with a single-well liquid inlet pipeline, and oil-gas-water separation equipment aiming at liquid inlet of the Shan Jingjin liquid pipeline is arranged in the separator; an oil-water outlet at the lower end of the separator is connected with an inlet of an electric reversing valve through a pipeline; the electric reversing valve is provided with two outlets, one outlet of the electric reversing valve is connected to the inlet of the first booster pump through a pipeline and a first filter, the outlet of the first booster pump is connected to an oil-water outlet pipeline, the other outlet of the electric reversing valve is connected to the inlet of the second booster pump through a second filter and a pipeline, and the outlet of the second booster pump is connected to the oil-water outlet pipeline through a pipeline; the multi-well liquid inlet pipeline is also provided with a bypass pipeline connected to the oil-water outlet pipeline; and the rear end of the separator is provided with a metering error automatic checking flow instrument.
Further, the separator is of a horizontal tank structure.
Further, the front part of the tank body of the separator is provided with an oil remover which divides the tank body into a front part and a rear part, the front part of the tank body is provided with a liquid level transmitter, and the pipe head is upwards provided with an umbrella after the multi-well liquid inlet pipeline stretches into the tank body; a separating plate is arranged below the pipe end of the multi-well liquid inlet pipeline, and a hole pipe is connected below the separating plate.
Further, the pressure gauge and the relief valve are provided in the front of the tank of the separator.
Further, the rear part of the tank body of the separator is provided with the single-well oil-gas-water metering device and the oil-gas-water interface detector; the single-well oil-gas-water metering device is connected with a Shan Jingjin liquid pipeline connected with the tank body.
Further, the rear part of the tank body of the separator is provided with a dosing device. A gas flow meter is also arranged at the rear part of the separator.
The invention also comprises RTU, PLC and data detection control system.
The invention has the following beneficial effects:
the pressurizing device for the oil well metering station can meter the oil gas and water yield of a single well, can meter the yield of a well group (multiple wells), and has high metering precision by an automatic metering error checking device; meanwhile, the back pressure of the oil well can be reduced, the transfusion capacity is improved, and the oil well yield is improved. The device adopts integrated sled dress formula structure, and on-the-spot construction simple to operate is swift, and whole set of device adopts intelligent control, and the digitization degree is high.
Drawings
FIG. 1 is a schematic diagram of the process flow structure of the present invention.
Wherein: 1. a multi-well liquid inlet pipeline; 2. a valve; 3, a filter; 4. a pressure gauge; 5. a safety valve; 6. a gas flow meter; 7. an oil-gas-water interface detector; 8. a dosing device; 9. shan Jingjin liquid line; 10. a single well oil-gas-water metering device; 11. error automatic checking flow instrument; 12-1, a first filter; 12-2, a second filter; 13. a first booster pump; 14. a flow meter; 15-1, a first oil water outlet line; 15-2, a second oil water outlet line; 16. an electric reversing valve; 17. a second booster pump; 18. a bypass line; 19. a blow-down line; 20. a bypass valve; 21. an oil remover; 22. a liquid level transmitter; 23. a hole pipe; 24. a separation plate; 25. an umbrella.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
see fig. 1: the invention is used for the supercharging device of the oil well metering station, comprising a separator, wherein one end of the separator is connected with a multi-well liquid inlet pipeline 1, and oil-gas-water separation equipment for feeding liquid to the multi-well liquid inlet pipeline 1 is arranged in the separator; the other end of the separator is connected with a single-well liquid inlet pipeline 9, and oil-gas-water separation equipment for feeding liquid to the Shan Jingjin liquid pipeline 9 is arranged in the separator; an oil-water outlet at the lower end of the separator is connected with an inlet of an electric reversing valve 16 through a pipeline; the electric directional valve 16 is provided with two outlets, one outlet of the electric directional valve 16 is connected to the inlet of the first booster pump 13 through a pipeline and the first filter 12-1, the outlet of the first booster pump 13 is connected to the oil-water outlet pipeline 15, the other outlet of the electric directional valve 16 is connected to the inlet of the second booster pump 17 through the second filter 12-2 and the pipeline, and the outlet of the second booster pump 17 is connected to the oil-water outlet pipeline 15 through the pipeline; the multi-well liquid inlet pipeline 1 is also provided with a bypass pipeline 18 connected to the oil-water outlet pipeline 15; the rear end of the separator is provided with a metering error automatic checking flow meter 11.
In a preferred embodiment of the invention, the separator is a horizontal tank structure. The front part of the tank body of the separator is provided with an oil remover 21 which divides the tank body into a front part and a rear part, the front part of the tank body is provided with a liquid level transmitter 22, and the pipe head of the multi-well liquid inlet pipeline 1 extends into the tank body and is upwards provided with an umbrella 25 at the pipe end; a separating plate 24 is arranged below the pipe end of the multi-well liquid inlet pipeline 1, and a hole pipe 23 is connected below the separating plate 24. A pressure gauge 4 and a relief valve 5 are arranged in front of the tank body of the separator. A single-well oil-gas-water metering device 10 and an oil-gas-water interface detector 7 are arranged at the rear part of the tank body of the separator; the single-well oil-gas-water metering device 10 is connected with a Shan Jingjin liquid pipeline 9 connected with the tank body. A dosing device 8 is arranged at the rear part of the tank body of the separator. A gas flow meter 6 is also provided at the rear of the separator.
The invention also comprises RTU, PLC and data detection control system.
Claims (8)
1. A supercharging device for an oil well metering station, which is characterized by comprising a separator, wherein one end of the separator is connected with a multi-well liquid inlet pipeline (1), and oil-gas-water separation equipment for feeding liquid to the multi-well liquid inlet pipeline (1) is arranged in the separator; the other end of the separator is connected with a single-well liquid inlet pipeline (9), and oil-gas-water separation equipment for feeding liquid to the Shan Jingjin liquid pipeline (9) is arranged in the separator; an oil-water outlet at the lower end of the separator is connected with an inlet of an electric reversing valve (16) through a first oil-water outlet pipeline (15-1); the electric reversing valve (16) is provided with two outlets, one outlet of the electric reversing valve (16) is connected to an inlet of the first booster pump (13) through a pipeline and the first filter (12-1), the outlet of the first booster pump (13) is connected to the second oil-water outlet pipeline (15-2), the other outlet of the electric reversing valve (16) is connected to an inlet of the second booster pump (17) through the second filter (12-2) and the pipeline, and the outlet of the second booster pump (17) is connected to the second oil-water outlet pipeline (15-2) through the pipeline; the multi-well liquid inlet pipeline (1) is also provided with a bypass pipeline (18) connected to the second oil-water outlet pipeline (15-2); the rear end of the separator is provided with a metering error automatic checking flow instrument (11).
2. The supercharging device for an oil well metering station of claim 1 wherein the separator is of a horizontal tank configuration.
3. Supercharging device for oil well metering station according to claim 2, characterized in that the front part of the tank body of the separator is provided with a deoiler (21) dividing the tank body into front and rear parts, the front part of the tank body is provided with a liquid level transducer (22), the multi-well liquid inlet pipeline (1) extends into the tank body, the pipe head is upward, and an umbrella (25) is arranged at the pipe end; a separating plate (24) is arranged below the pipe end of the multi-well liquid inlet pipeline (1), and a hole pipe (23) is connected below the separating plate (24).
4. A supercharging device for an oil well metering station as claimed in claim 3, characterized in that a pressure gauge (4) and a safety valve (5) are provided in front of the tank of the separator.
5. A supercharging device for an oil well metering station according to claim 3, characterized in that a single well oil-gas-water metering device (10) and an oil-gas-water interface detector (7) are arranged at the rear part of the tank body of the separator; the single-well oil-gas-water metering device (10) is connected with a Shan Jingjin liquid pipeline (9) connected with the tank body.
6. A supercharging device for an oil well metering station as claimed in claim 3, characterized in that a dosing device (8) is provided outside the tank body of the separator.
7. A supercharging device for an oil well metering station as claimed in claim 3, characterized in that a gas flow meter (6) is also provided at the rear of the separator.
8. A supercharging device for an oil well metering station as claimed in claim 3 which further comprises an RTU, PLC and data detection control system.
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| CN201710477727.2A CN107816636B (en) | 2017-06-21 | 2017-06-21 | Supercharging device and supercharging method for oil well metering station |
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| CN201710477727.2A CN107816636B (en) | 2017-06-21 | 2017-06-21 | Supercharging device and supercharging method for oil well metering station |
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| CN107816636B true CN107816636B (en) | 2024-01-30 |
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| CN111206918B (en) * | 2020-03-25 | 2024-10-01 | 新疆金牛能源物联网科技股份有限公司 | Oil well metering equipment |
| CN111927430A (en) * | 2020-08-05 | 2020-11-13 | 陕西星辰石油科技有限责任公司 | Oil well oil gas gathering, transportation, extraction, measurement and pressurization device |
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| CN116255128B (en) * | 2021-12-09 | 2025-07-29 | 中国石油天然气股份有限公司 | Skid-mounted wellhead oil-gas-water three-phase separation metering device |
| CN114432782A (en) * | 2022-03-09 | 2022-05-06 | 西安山川石油科技有限责任公司 | High-molecular recycling scale absorption device and control method thereof |
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| CN107816636A (en) | 2018-03-20 |
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