Self-energized downhole tool

Details Self-energized downhole tool Self-energized downhole tool

2005-12-28

2009-06-30

Gay, Jennifer H (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S376000

Reexamination Certificate

active

07552777

ABSTRACT:
Setting mechanisms for downhole tools are described that take advantage of hydrostatic pressure in the wellbore which is harnessed to set a tool after exposure to well fluids for a given time or temperature defeats a lock and allows hydrostatic forces to trigger the setting of the tool. Alternatively, some other biasing source is released to set the downhole tool after exposure to well fluids for a time or a temperature and time defeats a lock and allows the biasing source to set the tool. While applications to packers are preferred, other downhole tools can be set in his manner removing the need for an inner string, dropping a ball on a seat or pressurizing the wellbore to achieve the setting of the downhole tool.

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http://www.alchemycastings.com/lead-products/fusible.htm.
http://www.solders.com/low—melt—alloys.htm.

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