国内外X80深水钻井隔水管主管性能对比

摘要

Along with the development of marine oil-gas exploration towards to the deep water field in China,the China localization development for well drilling riser is more and more important. The main pipeline of X80 grade marine well drilling riser with533.4 mm×25.4 mm produced in China was contrasted with that manufactured in overseas from several aspects,such as material composition,microstructure,tensile property,impact property,CTOD fracture toughness and geometric dimension control etc. The results showed that China manufacturer has preliminarily mastered the manufacturing technology of X80 deepwater drilling riser,but the stability of welding quality,geometric dimension precision control still need further improvement.%随着我国海洋油气勘探向着深水领域发展，钻井隔水管的国产化研制显得越来越重要。通过对我国自主研制的X80级533.4 mm×25.4 mm规格的海洋钻井隔水管主管和国外制造的同等规格的隔水管主管在板材成分、组织、拉伸性能、冲击性能、 CTOD断裂韧性及几何尺寸控制等方面的试验检测对比，结果表明我国已经初步掌握了X80深水钻井隔水管主管的制造技术，但在焊接质量稳定性、几何尺寸精度控制方面尚需进一步改进。