| 发明名称 |
MULTI-LAYER COATING AND RELATED METHODS OF APPLICATION |
| 摘要 |
A downhole tool includes a circumferential band having a plurality of axially adjacent weld beads forming a wear resistant surface along a particular axial length of the tool and at least one circumferential multi-layer coating applied axially adjacent the band on either end. The multi-layer coating includes a first layer, exhibiting a first color, applied directly onto the tool surface, and a second wear-resistant layer, exhibiting a second color different from the first color, applied directly onto the first layer. The second layer wears or is removed by a certain amount, such that the first color of the first layer is revealed to indicate the extent of wear and/or that the tool should be removed from service and refurbished by applying a new wear-resistant coating. |
| 申请公布号 |
US2017096863(A1) |
申请公布日期 |
2017.04.06 |
| 申请号 |
US201515316070 |
申请日期 |
2015.07.02 |
| 申请人 |
SUPERIOR SHOT PEENING, INC. |
发明人 |
Blasingame Van;Johnson Albert |
| 分类号 |
E21B17/10;C23C4/134;C09D1/00;C23C4/16;C23C4/02;C23C4/06;C23C4/129;C23C4/123 |
主分类号 |
E21B17/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A downhole tool comprising:
a circumferential band comprising a plurality of axially adjacent weld beads forming a wear resistant surface along a particular axial length of the tool; and at least one circumferential multi-layer coating applied axially adjacent the band on either end, the coating comprising: a first layer, exhibiting a first color, applied directly onto the tool surface; and a second wear-resistant layer, exhibiting a second color different from the first color, applied directly onto the first layer, wherein when the second layer wears or is removed by a certain amount, the first color of the first layer is revealed as an indication of the degree of wear. |
| 地址 |
Houston TX US |
