| Popis: |
In recent years, with the rapid development of modern petroleum industry, some conventional oil country tubular goods (OCTGs) have been unable to meet the requirements of ultra-deep oil and gas drilling and production. Titanium alloy OCTGs showed broad application prospects due to its high specific strength, Low elastic modulus and strong CO2+H2S+Cl- corrosion resistance. However, large-scale applications of titanium alloy OCTGs were seldom reported, which is mainly attributed to the lack of anti-corrosive resistance and mechanical performance of titanium alloy OCTGs in the working conditions. In the present work, the research progress on properties and application of titanium alloy OCTGs were reviewed. The resistance to uniform corrosion, stress corrosion cracking, pit and crevice corrosion, mechanical properties of the titanium alloy OCTGs in air and downhole corrosion media were comprehensively discussed. Application status and prospect of titanium alloy OCTGs in oil and gas exploration were also summarized. |
