发明名称 |
COMPRESSIVE RESIDUAL STRESS-HARDENED DOWNHOLE TOOL SHAFT REGION |
摘要 |
The disclosure provides downhole tools with shaft regions that are hardened by a compressive residual stress created when an allotropic material in a precursor region transforms from a first allotrope to a second allotrope in response to heat, while continuing to occupy the same physical space. The disclosure further provides methods of forming such downhole tools. |
申请公布号 |
WO2016195752(A1) |
申请公布日期 |
2016.12.08 |
申请号 |
WO2015US66679 |
申请日期 |
2015.12.18 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
PADMAREKHA, Venkkateesh Parthasarathi;COOK III, Grant O.;VOGLEWEDE, Daniel Brendan |
分类号 |
E21B10/42;E21B10/43;E21B10/54 |
主分类号 |
E21B10/42 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|