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Control method and system for shifting peak operation of electric submersible pump oil pumping system

A work control, submersible pump technology, applied in pump control, machine/engine, liquid variable capacity machinery, etc. The effect of reducing operating costs and reducing regulation capacity

Active Publication Date: 2021-03-30
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method and system for controlling peak-staggered operation of an electric submersible pump oil pumping system, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that the existing electric submersible pumps work at the same time with a large power load. The capacity of the transformer is also large, which can easily lead to equipment failure and increase the cost

Method used

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  • Control method and system for shifting peak operation of electric submersible pump oil pumping system
  • Control method and system for shifting peak operation of electric submersible pump oil pumping system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: as attached figure 1 As shown, the electric submersible pump pumping system staggered work control method includes the following steps:

[0026] Step 1, according to the electric submersible pump pumping system to complete the construction and wiring of each equipment;

[0027] Step 2, the electric submersible pump pumping system is powered on, and each device is initialized;

[0028] Step 3, set through the local touch screen or remote central control station: set the current time of the started electric submersible pump as T 1 , the standard liquid level height is H, and the liquid density ρ; write H and ρ into the core controller; set the start time of peak shift stage 1 in the core controller as T 2 , the end time is T 3 ; The highest pumping times of the pumping unit at peak shift stage 1 is N 1 , the minimum number of strokes is N 2 ;The start time of the staggered phase 2 is T 4 , the end time is T 5 ; The maximum pumping times of the pumping...

Embodiment 2

[0038] Embodiment 2: as attached figure 2 As shown, the electric submersible pump pumping system includes a remote central control station, a core controller, a Modbus device, a first frequency converter, a second frequency converter, an nth frequency converter, a first submersible pump, a second submersible pump and an nth A submersible pump, the first submersible pump is connected to the first frequency converter, the second submersible pump is connected to the second frequency converter, the nth submersible pump is connected to the nth frequency converter, the first frequency converter, the second frequency converter and The nth frequency converter is all connected with the Modbus equipment, and the core controller is provided with a serial port and an Ethernet port, and the core controller is connected with the Modbus device through the serial port; the Ethernet port of the core controller is connected with the remote central control through the wireless network TCP / IP co...

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Abstract

The invention relates to the technical field of oil-pumping system control in petroleum engineering, and provides a peak-shifting working control method and system of an electric oil-submerged pump oil-pumping system and the electric oil-submerged pump oil-pumping system. The method includes the steps that the electric oil-submerged pump oil-pumping system is powered on, and all equipment is initialized; an initial value is set; a core controller reads the manual / automatic state of one electric oil-submerged pump; after a start command is received, the core controller reads the current time T1of the system and reads the current down-hole pressure P; in the core controller, a peak-shifting stage to which the current situation belongs is judged according to the read T1; different steps areexecuted according to different peak-shifting stages, the steps of the peak-shifting stages are repeatedly executed till an n oil-submerged pump is automatically started; waiting for an equipmentstop signal is carried out, and if the core controller obtains the stop signal, the step 12 is executed; and all the oil-submerged pumps stop running and get into a standby state. The down-hole electric oil-submerged pumps work in a peak-shifting manner, and therefore the effects of reducing the capacity of a transformer and achieving energy saving and consumption reduction are achieved.

Description

technical field [0001] The invention relates to the technical field of oil pumping system control in petroleum engineering, and relates to a method and system for controlling peak-shifting work of an electric submersible pump pumping system, in particular to a method for controlling peak-shifting work of an electric submersible pump pumping system and an electric submersible pump pumping system. oil system. Background technique [0002] Traditional electric submersible pumps adopt uninterrupted continuous working mode to increase oil output. Most oil fields in my country use this method to control the work of electric submersible pumps. There are many production wells on the platform wells, and all the electric submersible pumps work at the same time with a large power load, and the transformer capacity is required to be large, resulting in high power consumption and high loss, resulting in continuous increase in oil production costs. Contents of the invention [0003] Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/06
CPCF04B49/06
Inventor 唐伏平张学鲁赵黎李纲要栾海军史晓川李建财刘进军李超
Owner BC P INC CHINA NAT PETROLEUM CORP
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