CN103104229A - Multistage centrifugal water injection pump system with pressurizing attached pump and water injection method thereof - Google Patents
Multistage centrifugal water injection pump system with pressurizing attached pump and water injection method thereof Download PDFInfo
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- CN103104229A CN103104229A CN 201110379049 CN201110379049A CN103104229A CN 103104229 A CN103104229 A CN 103104229A CN 201110379049 CN201110379049 CN 201110379049 CN 201110379049 A CN201110379049 A CN 201110379049A CN 103104229 A CN103104229 A CN 103104229A
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Abstract
The invention discloses a multistage centrifugal water injection pump system with a pressuring attached pump. The multistage centrifugal water injection pump system with the pressuring attached pump is mainly composed of a multistage centrifugal water injection pump (1) and a plurality of water injection pipes (2), wherein the multistage centrifugal water injection pump (1) is connected with a water source (3), the plurality of water injection pipes (2) are respectively connected with the multistage centrifugal water injection pump (1), and the pressurizing attached pump (4) is additionally arranged between the multistage centrifugal water injection pump (1) and the water source (3). Further disclosed is a water injection method based on the multistage centrifugal water injection pump system. The small-power pressurizing attached pump with a wide working range is connected before the multistage centrifugal water injection pump in series, and therefore the large-power multistage high-pressure centrifugal water injection pump in the water injection system is enabled to work in a narrow high-efficiency working area all the time, output head and flow of a water injection pump station are adjusted, and operating efficiency of the pump station is improved.
Description
Technical field
The present invention relates to a kind of multistage centrifugal water injecting pump system and water-filling method thereof with the attached pump of supercharging.
Background technology
Water filling is a kind of very important mining type in oil field development, and it can replenish stratum energy effectively, improving oil recovery factor, guarantees to have played positive role in oil field high yield, stable yields.But water filling itself is also an energy consumption rich and influential family, and the power consumption of flood pattern is huge, accounts for 33%～56% of China's field produces electricity consumption.And along with the rising water injecting consumption of oil field composite water cut also will sharply rise.Therefore, the energy-saving and cost-reducing of flood pattern has great importance for reducing the field produces cost.Add up according to investigations, China's water injecting pump operational efficiency average out to 75.2%, domestic advanced value is 79.9% (grand celebration), is abroad 80%～85%.Domestic water filling electricity consumption unit consumption average out to 6.94kWh/t, advanced value for 6.15kWh/t, is abroad 5.6～6.0kWh/t.The average Water Injection Efficiency in the whole nation is 47.8%.This shows, improve Water Injection Efficiency, energy-saving and cost-reducing, have great significance.
Water Injection Efficiency is the index of a reflection oil field flood pattern ground surface works comprehensive economy technology, and the height of Water Injection Efficiency directly affects the height of cost of crude oil production.Development along with the development technology in oilfield technology, each oil field, the whole nation has begun to take shape the Above Ground Technology that satisfies the water flooding needs that is fit to this oil field all kinds oil reservoir, different injection pressure, different quality characteristics on flood pattern, for good condition has been created in stable yields, the volume increase in oil field.But along with the increase of oil field development difficulty, the Water Injection Efficiency in most of oil field does not all reach standard-required.
The most oil fields of China have entered development late stage, and the moisture content in oil field progressively rises, and water injection rate increases rapidly, and power consumption also sharply increases.Therefore water filling is energy-conservation to saving production cost, enhance productivity and economic benefit being significant.Making water injecting pump be operated in efficient district is the key that reduces whole pumping plant and flood pattern energy consumption.
The booster pump that use in the most domestic oil field is stage multistage centrifugal water injecting pump, and its efficacious workaround is very narrow, and motor-driven power is large, operational efficiency is generally on the low side, pump lift and discharge capacity are non-adjustable by pump self, generally use lift and the discharge capacity at valve regulated pump discharge place, and energy loss is very large.Along with the application of variable-frequency control technique, part oil field trial adopts frequency converter directly to drive multistage high-pressure centrifugal, by changing the rotating speed of centrifugal pump motor, regulates water flooding pump station output lift and flow.Due to the reason such as the working region of the intrinsic shortcoming of frequency converter self and high pressure centrifugal pump is narrow, directly drive effect unsatisfactory.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, a kind of multistage centrifugal water injecting pump system with the attached pump of supercharging is provided, this multistage centrifugal water injecting pump system with the attached pump of supercharging is by attached pump of small-power supercharging that has than wide operating range of series connection before the multistage centrifugal water injecting pump, in flood pattern, high-power multistage centrifugal high pressure water injecting pump works in narrow and small efficacious workaround all the time thereby make, and output lift and the flow of adjusting water flooding pump station, the operational efficiency of raising pumping plant.
Another object of the present invention has been to provide a kind of water-filling method based on above-mentioned multistage centrifugal water injecting pump system.
Purpose of the present invention is achieved through the following technical solutions: the multistage centrifugal water injecting pump system with the attached pump of supercharging, mainly consist of by the multistage centrifugal water injecting pump that is connected with the water source and with some water injection pipes that the multistage centrifugal water injecting pump is connected respectively, also be provided with the attached pump of supercharging between described multistage centrifugal water injecting pump and water source.
Be provided with flow meter between the attached pump of described supercharging and water source.
Be provided with choke valve between described multistage centrifugal water injecting pump and water injection pipe.
Water-filling method based on above-mentioned multistage centrifugal water injecting pump system comprises the following steps:
(a) at first, open the water filling of multistage centrifugal water injecting pump water injection pipe;
(b) when needs are regulated the output lift of water flooding pump station and flow, open the attached pump of supercharging, whole system is carried out supercharging;
(c) regulate by the attached pump of supercharging from the output lift of the water at water source and flow after, enter water injection tank, finally complete water filling.
In sum, the invention has the beneficial effects as follows: by attached pump of small-power supercharging that has than wide operating range of series connection before the multistage centrifugal water injecting pump, in flood pattern, high-power multistage centrifugal high pressure water injecting pump works in narrow and small efficacious workaround all the time thereby make, and output lift and the flow of adjusting water flooding pump station, the operational efficiency of raising pumping plant.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.
Embodiment:
As shown in Figure 1, the multistage centrifugal water injecting pump system with the attached pump of supercharging that the present invention relates to, mainly consist of by the multistage centrifugal water injecting pump 1 that is connected with water source 3 and with some water injection pipes 2 that multistage centrifugal water injecting pump 1 is connected respectively, also be provided with the attached pump 4 of supercharging between described multistage centrifugal water injecting pump 1 and water source 3.
Be provided with flow meter 5 between the attached pump 4 of described supercharging and water source 3.
Be provided with choke valve 6 between described multistage centrifugal water injecting pump 1 and water injection pipe 2.
Water-filling method based on above-mentioned multistage centrifugal water injecting pump system comprises the following steps:
(a) at first, open the water filling of multistage centrifugal water injecting pump water injection pipe;
(b) when needs are regulated the output lift of water flooding pump station and flow, open the attached pump of supercharging, whole system is carried out supercharging;
(c) regulate by the attached pump of supercharging from the output lift of the water at water source and flow after, enter water injection tank, finally complete water filling.
The present invention is by attached pump of small-power supercharging that has than wide operating range of series connection before the multistage centrifugal water injecting pump, as shown in Figure 1, in flood pattern, high-power multistage centrifugal high pressure water injecting pump works in narrow and small efficacious workaround all the time thereby make, and output lift and the flow of adjusting water flooding pump station, the operational efficiency of raising pumping plant.
The above is only preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, and every foundation technical spirit of the present invention, any simple modification, equivalent variations that above embodiment is done are within all falling into protection scope of the present invention.
Claims (4)
1. the multistage centrifugal water injecting pump system that has the attached pump of supercharging, it is characterized in that, the some water injection pipes (2) that mainly are connected respectively by the multistage centrifugal water injecting pump (1) that is connected with water source (3) and with multistage centrifugal water injecting pump (1) consist of, and also are provided with the attached pump of supercharging (4) between described multistage centrifugal water injecting pump (1) and water source (3).
2. the multistage centrifugal water injecting pump system with the attached pump of supercharging according to claim 1, is characterized in that, is provided with flow meter (5) between the attached pump of described supercharging (4) and water source (3).
3. the multistage centrifugal water injecting pump system with the attached pump of supercharging according to claim 1, is characterized in that, is provided with choke valve (6) between described multistage centrifugal water injecting pump (1) and water injection pipe (2).
4. based on the water-filling method of above-mentioned multistage centrifugal water injecting pump system, it is characterized in that, comprise the following steps:
(a) at first, open multistage centrifugal water injecting pump (1) to water injection pipe (2) water filling;
(b) when needs are regulated the output lift of water flooding pump station and flow, open the attached pump of supercharging (4), whole system is carried out supercharging;
(c) regulate by the attached pump of supercharging (4) from the output lift of the water at water source and flow after, enter water injection tank (2), finally complete water filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110379049 CN103104229A (en) | 2011-11-11 | 2011-11-11 | Multistage centrifugal water injection pump system with pressurizing attached pump and water injection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110379049 CN103104229A (en) | 2011-11-11 | 2011-11-11 | Multistage centrifugal water injection pump system with pressurizing attached pump and water injection method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103104229A true CN103104229A (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110379049 Pending CN103104229A (en) | 2011-11-11 | 2011-11-11 | Multistage centrifugal water injection pump system with pressurizing attached pump and water injection method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103104229A (en) |
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2011
- 2011-11-11 CN CN 201110379049 patent/CN103104229A/en active Pending
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Application publication date: 20130515 |