Downhole tool having a sealing element constructed from a polyvinyl alcohol compound
US10767439B1 · kind B1 · utility
3Cited by
7References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 23, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Oct 12, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/129
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Degradable downhole tools, tool components, and balls are formed from a polyvinyl alcohol (PVA) compound. The PVA compound exhibits strength and elasticity properties that are comparable to existing degradable downhole polymers and further exhibits degradability properties that are superior to existing degradable downhole polymers. For different components, the PVA compound may include a reinforcing material such as fiberglass. A plug for use in a wellbore conduit may include a sealing element that is formed of PVA compounds of various types.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.