Systems and techniques to actuate isolation valves

Details Systems and techniques to actuate isolation valves Systems and techniques to actuate isolation valves

2008-03-26

2011-11-15

Gay, Jennifer H (Department: 3676)

Wells

Processes

Placing or shifting well part

C166S320000, C166S334100, C166S240000, C137S087010, C137S488000

Reexamination Certificate

active

08056643

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.

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