Electronic identification method for oil field flow string, and digital management method and system thereof

Abstract

The invention provides an electronic identification method for an oil field flow string, and a digital management method and system thereof, and belongs to the technical field of digital management of petroleum systems. According to the electronic identification method for the oil field flow string, an identification ring / board made of an abrasion-resistant and corrosion-resistant metal material can be fixed to the flow string through a electromagnetic pulse cold-pressing micro-welding technology, the cold-pressing micro-welding mode does not damage the structure performance of a body, no heat influence exists, the bonding strength is large, the microstructure does not change, and wear-resistant, corrosion-resistant, permanent and reliable properties are achieved.

Description

technical field [0001] The invention belongs to the technical field of digital management of petroleum systems, and in particular relates to an electronic identification method for an oil production string in an oil field, a digital management method and a system thereof. Background technique [0002] At present, the traditional method is still used to mark the information of the oil production string, that is, manually write the information identification code, or print the steel stamp or laser engraving on the oil production string, but this method cannot directly obtain the information. With the advent of the era of artificial intelligence, oilfields are also comprehensively building intelligent systems for oilfield big data and smart oilfields. Therefore, digital management systems are the future development trend. [0003] The key to the digital management system is the need to establish an electronic tag or electronic ID card for each oil production string, so that the...

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Problems solved by technology

[0004] However, the technical bottleneck of the intelligent management system lies in the design and production of the electronic tag for identifying the information of the oil production string. Since the electronic tag has to work for a long time in the harsh downhole environment of high temperature and high pressure, oil and gas corrosion, and medium immersion, the electronic tag must be easy to identify and easy to use. Decoding, long-term, reliable, corrosion-resistant, bump-resistant, and the production process can not damage the string body

Some research institutions use packaged electronic chips, magnetic strips, etc. as electronic tags, but it is difficult to guarantee their permanence and reliability due to the complex working environment, so this method is not feasible

There are also laser engraved markings on the body of the production tubing string, but due to the harsh downhole and field environments and severe corrosion, not only will the shape of the identification code be changed, but the on-site environment will also cause the problem that it cannot be quickly decoded online due to poor contrast.

Using screw fixing, riveting and welding to fix the electronic signage will damage the body of the oil pipe and sucker rod, and it is easy to cause fatigue fracture, which is not allowed

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