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< Natural Gas and Oil > Editorial Department
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Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
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Issue:ISSN 1006-5539
          CN 51-1183/TE

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    Your Position ：Home->Past Journals Catalog->2011 Vol.5

    Application of Composite Spraying Technique for Double Metal in Serious Corrosion Gas Wells
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    Author's Workplace：
    Key Words：Double metal；Composite coatings；Supersonic arc spraying；Corrosion；Gas well
    Abstract：Some gas wells with high water content and high mineralization in Changqing Jingbian Gas Field are seriously corroded and service life of oil pipelines in the wells are shortened greatly，which results in production stop of gas wells and frequent well repairs and brings about serious potential safety hazard to gas field production. Corrosion resisting alloy tubes are often used abroad to solve the above problem，but much more costs are needed and it is difficult to apply such tubes in Jingbian Gas Field. Introduced is the composite spraying technique for double metal of 13Cr stainless steel in the bottom layer and Al alloy in the surface layer and analyzed is its microstructure and corrosion resistance and assessed is its field application in combination of field coupon corrosion test and corrosion detection means. The assessment results show that the composite spraying technique for double metal has such advantages as low coating porosity，excellent corrosion resistance and low cost，which is a low cost and effective corrosion control means for gas wells with low yield and serious corrosion.
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