| 摘要 |
Herein disclosed is a downhole tool comprising a 360-degree wear band placed circumferentially around a portion of the largest outer diameter (OD) of the tool. In some embodiments, the wear band comprises fiber, resin, and a hard mineral. In some embodiments, the hard mineral comprises alumina oxide, carbide, poly crystalline diamond, or combinations thereof. In some embodiments, the wear band has a thickness of from about 0.001 inch to about 0.5 inch or wherein the wear band has a width of from about 0.01 inch to about 1.0 inch or wherein the wear band is flush with the largest OD of the tool. In some embodiments, the portion of the largest outer diameter of the tool is a part of a mule shoe, or a gage ring, or a bottom sub. Methods of making such a wear band is also disclosed. |
