Anti-corrosion oil pipe or casing pipe for oil-extraction in oil-field or injecting liquid medium and its anti-corrosion treatment method

Anti-corrosion oil pipe or casing pipe for oil-extraction in oil-field or injecting liquid medium and its anti-corrosion treatment method

  • CN 1,438,354 A
  • Filed: 03/11/2003
  • Published: 08/27/2003
  • Est. Priority Date: 03/11/2003
  • Status: Active Application
First Claim
Patent Images

1. An oil field recover the oil or the fluid injection body medium with anticorrosive oil pipe or sleeve pipe, its standard weave is grouped into for the ferrite highlights, it is organized as F the mixed mutually part of inner black and white E2-N, F E4N and residual austenite and martensite, the white highlights of outmost surface is divided into bright layer, by F E2-3N and F E4N forms.

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