| 摘要 |
<p>A tool 1 for use in the recovery hydrocarbons from subterranean or subsea reservoirs, such as hole opener, stabilizer, drill bit, centralizer or collar of with a hard-facing on a surface of the tool, the surface of the tool having opposing side edges 8 and the hard-facing 8 comprising a plurality of insert components 8, 9 10 applied to the surface of the tool, which may have blade like structures 6 and channels 5, at least some of the insert components being applied at an inclined angle to the opposing edges of the surface of the tool. The insert components may be applied in a chevron pattern over the surface of the tool or be arcuate in form (fig, 4).</p> |
