Fiber-reinforced tools for downhole use
US10145179B2 · kind B2 · utility
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8References
21Claims
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Key dates
| Filing date | Dec 11, 2014 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Aug 10, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2005/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A wellbore tool may be formed, at least in part, by a fiber-reinforced hard composite portion. The fiber-reinforced hard composite portion can include reinforcing particles and reinforcing fibers dispersed in a binder, wherein the reinforcing fibers have an aspect ratio ranging from 1 to 15 times a critical aspect ratio (Ac). The critical aspect ratio can be determined using the equation Ac=σf/(2τc), wherein σf is an ultimate tensile strength of the reinforcing fibers, and τc is an interfacial shear bond strength between the reinforcing fiber and the binder or a yield stress of the binder, whichever is lower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.