Green and low-carbon intelligent group control method and system for oil extraction system

An oil production system and intelligent control unit technology, applied in control systems, energy industry, production fluids, etc., can solve problems such as failure to take into account the limitations of the well site power grid, achieve collaborative optimization of production goals, improve utilization, and improve system safety sexual effect

Active Publication Date: 2022-07-22
陕西埃菲克能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the intelligent optimization of the oil well group is considered, it does not take into account the limitations of the well site power grid itself

Method used

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  • Green and low-carbon intelligent group control method and system for oil extraction system
  • Green and low-carbon intelligent group control method and system for oil extraction system
  • Green and low-carbon intelligent group control method and system for oil extraction system

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Experimental program
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Effect test

Embodiment 1

[0064] This embodiment discloses a green and low-carbon intelligent group control system for an oil production system, such as figure 1 As shown in the figure, it includes a well site intelligent control unit, a single well intelligent control unit and a security control system; the single well intelligent control unit includes multiple ones, which are arranged at each individual oil well; the security control system is the same as the aforementioned well site. The intelligent control units are electrically connected; the single-well intelligent control units are all electrically connected to the well site intelligent control unit; the intelligent group control system in this embodiment further includes a common DC bus device for oil wells, which consists of a rectifier / feedback unit, a common DC The busbar and the inverter unit are composed; the rectifier / feedback unit can be divided into the energy feedback method through the autotransformer. The energy feedback through the a...

Embodiment 2

[0099] Based on the green and low-carbon intelligent group control system of the oil production system described in the first embodiment, the embodiment of the present disclosure discloses a green and low-carbon intelligent group control method of the oil production system, which includes the following steps of peak shifting optimization of oil wells:

[0100] 1) Analyze the average liquid production Q of the current oil well 0 ;

[0101] 2) Collect the energy consumption curve of the current well site equipment, and obtain the load rate F of the oil well motor in the system i , the pump efficiency η i ;

[0102] 3) Select the pump efficiency η among them i >η maxThe oil well, analyze and calculate its maximum safe frequency range, the frequency N corresponding to the high-efficiency load of the motor i to produce, where n max is the set maximum pump efficiency, η min is the set minimum pump efficiency;

[0103] 4) Select the pump efficiency η among them min i max the...

Embodiment 3

[0106] Based on the green and low-carbon intelligent group control system of the oil production system described in the first embodiment, the embodiments of the present disclosure disclose a green and low-carbon intelligent group control method of the oil production system, such as image 3 shown, including the following steps for off-peak operation of wells:

[0107] 1) Select the number n of oil wells with normal power acquisition;

[0108] 2) Calculate a complete cycle T of n ports i , the corresponding maximum value T 0 , set to T=5T 0 Carry out oil well data acquisition and obtain power curve P i and system efficiency X j (j=1,2,...,n);

[0109] 3) Wait for the acquisition to be completed, and calculate the delay time of oil well operation in the order of the system efficiency value from large to small;

[0110] 4) For the first time, the maximum oil well power curve of the efficiency value is used as the reference curve P i0 ; let j = 2;

[0111] 5) Calculate P ...

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Abstract

According to the green low-carbon intelligent group control method and system for the oil extraction system, an existing oil well control system is improved and effectively fused with a solar system, a buffer device is provided for a common direct current bus technology, meanwhile, solar energy serves as supplementary energy, and the utilization rate of electric energy and the emission index of well site carbon are effectively increased. Intelligent optimization of the whole well site is achieved based on well site intelligent control, the purpose of collaborative optimization of energy and production targets is achieved, possibility is provided for energy-saving and efficient production of crude oil, meanwhile, a security control system is combined, system safety is effectively improved, and potential safety hazards of the well site are reduced.

Description

technical field [0001] The invention belongs to the technical field of optimal control of pumping units, and in particular relates to a green and low-carbon intelligent group control method and system for an oil production system. Background technique [0002] At present, major domestic oilfield companies use a large number of rod oil production systems. In rod oil production systems, beam pumping units and vertical oil pumping units account for the highest proportion; for rod oil production systems, the rotary motion (motor ) is converted into a linear reciprocating operation mode, so the difference between the upper and lower strokes of the suspended load of the pumping unit is large, and it is in the process of frequent acceleration and deceleration, and the balance adjustment is difficult, resulting in a large change in the motor load, and even the occurrence of power generation by the pumping unit. The power consumption of the oil engine is extremely high, the system ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12H02J3/14H02J3/28H02J7/35H02P27/06
CPCE21B43/121H02J3/14H02J3/28H02J7/35H02P27/06H02J2310/60Y02P90/02
Inventor 金钟辉殷亚楠张迪罗亚东金静斌王刚周石亮
Owner 陕西埃菲克能源科技有限公司
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