Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A DC power supply system for an oil-water well casing cathodic protection and anti-corrosion instrument

A cathodic protection and power supply system technology, applied in the direction of DC network circuit devices, electrical components, circuit devices, etc., can solve problems such as inability to digitize remote monitoring

Active Publication Date: 2018-04-03
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problem of digital remote monitoring in existing methods, the present invention provides a DC power supply system for oil and water well casing cathodic protection and anti-corrosion instrument. , which ensures the authenticity of the control parameters of the cathodic protection system, and does not burn down the cathodic protection system during thunder and lightning; does not need porcelain disc resistors for shunting, and has high operating efficiency; does not require a special power distribution room, reducing the initial investment cost; reaching oil The goal of long-term safe and efficient operation of water well casing is not corroded

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A DC power supply system for an oil-water well casing cathodic protection and anti-corrosion instrument
  • A DC power supply system for an oil-water well casing cathodic protection and anti-corrosion instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In order to overcome the problems of digital remote monitoring and low efficiency in existing methods, the present invention provides such as figure 1 , figure 2 The DC power supply system for cathodic protection and anti-corrosion instrument for oil and water well casing shown in the present invention has a novel structure, realizes digital remote monitoring, realizes real unattended operation, and ensures the authenticity of the control parameters of the cathodic protection system. The pole protection system will not be burned during lightning; no need for shunting by porcelain plate resistors, high operating efficiency; no need for a special power distribution room, reducing initial investment costs; achieving the goal of long-term safe and efficient operation of oil and water well casings without corrosion .

[0023] A DC power supply system for an oil and water well casing cathodic protection and anti-corrosion instrument, including a switching power supply modul...

Embodiment 2

[0040] Embodiment 2: Based on Embodiment 1, the DC power supply system in this embodiment is divided into four branches.

[0041] The first branch shunt DC power supply control circuit: the first switching power supply module, through the external adjustable resistor RT 1 Adjust the output voltage from 0 to 60V, and the maximum current output is 18A. The negative pole of the first rectifier diode module is connected to the positive pole of the first switching power supply module, and the positive pole of the first rectifier diode module is connected to the load RL 1 Connected at one end, the load RL 1 the other end and the shunt RF 1 Connected at one end, the shunt RF 1 The other end is connected to the negative terminal of the first switching power supply module, the positive terminal of the voltmeter V1 is connected to the positive terminal of the first switching power supply module, the negative terminal is connected to the negative terminal of the first switching power s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a DC power supply system for an oil-water well casing cathodic protection and anti-corrosion instrument, which includes a DC power supply system of a switching power supply module and an RTU module. The DC power supply system of the switching power supply module is connected in parallel with a voltage monitoring instrument, and the voltage monitoring instrument is electrically connected to the RTU. module, the RTU module is electrically connected to the current monitoring instrument, and the switching power supply module is used to output continuous regulation DC voltage; the voltage monitoring instrument and the current monitoring instrument are used to display the DC voltage and current on the spot, and the present invention realizes digital remote monitoring To the real unattended, the authenticity of the control parameters of the cathodic protection system is guaranteed, and the cathodic protection system will not be burned when there is thunder and lightning; the pulse width modulation method is used for shunting, and the operation efficiency is high; no special power distribution room is required to reduce the initial investment cost ; Reached the goal of long-term safe and efficient operation of oil and water well casing without being corroded.

Description

technical field [0001] The invention relates to a DC power supply system for an anti-corrosion instrument, in particular to a DC power supply system for an oil-water well casing cathodic protection anti-corrosion instrument. Background technique [0002] The reason for casing corrosion in oil and water wells is essentially the electrochemical corrosion of the primary battery on the steel surface. The potential of each part of the steel surface is not completely the same. The part with a higher potential forms the cathode area, and the cathode reaction occurs; The part with lower potential forms the anode region, and the anode reaction occurs. The electrons generated after metal ionization in the anode area are transferred to the cathode area for cathodic reaction, and the flow of ions in the electrolyte solution constitutes a localized corrosion battery. For the entire wellbore casing, different cathode and anode regions will be formed due to the differences in water salini...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02J1/00C23F13/06
Inventor 高宝元
Owner BC P INC CHINA NAT PETROLEUM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com