Downhole isolation device with retained valve member
US6651738B1 · kind B1 · utility
13Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | May 29, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B34/063
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole zone isolation device is disclosed that features a non-spherical valve member that will not rotate while being drilled out. The valve member is retained in the isolation device so that flow uphole will not allow the valve member to exit the body of the isolation device. Bypass passages around the valve member are provided so that flow uphole can lift the valve member off its seat and flow can go around its periphery. Pressure from above seats the valve member. Non-metallic materials speed drill-out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.