Systems and techniques to actuate isolation valves
US8056643B2 · kind B2 · utility
15Cited by
25References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2008 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Apr 10, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7762
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tool that is usable in a well and may include an operator, a switch, a resilient device and an indexer. The switch may be configured to selectively communicate a first force to the operator, thereby actuating the tool. The resilient device may exert a second force. The indexer may cycle through a sequence of positions in response to alternating between the second force and a third force. The sequence includes a predetermined position configured to actuate the switch, thereby communicating the first force to the operator to actuate the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.