Development and structure characterization of ultra-high strength and toughness casing for myriametric well
Author:
Affiliation:

1.Baosteel Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China;2.School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3.State Key Laboratory of Oil and Gas Equipment, Shanghai 201900, China

Clc Number:

TE921;P634.4

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    According to the construction requirements of myriametric extra-deep well, the BG155V casing with good toughness, high-temperature strength, collapse resistance and delayed fracture resistance is developed on the basis of alloying technology and manufacture process optimization. The test results of batch production showed that the yield strength reaches over 1100 MPa, and the transverse Charpy impact energy at 0 ℃ reached 10% of the nominal yield strength, and the strength and low temperature toughness and microstructure of casing under different service temperatures were analyzed. It was found that the grain size level of the casing with controlled cooling process after hot rolling reaches up to 11. The fine grains ensure good toughness and delayed fracture resistance of the material, which improves the reliability of the casing in the myriametric extra-deep wells for the development of oil and gas resource.

    Reference
    Related
    Cited by
Get Citation
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:May 22,2024
  • Revised:July 02,2024
  • Adopted:July 02,2024
  • Online: August 02,2024
  • Published: July 10,2024