Electro-mechanical thruster
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United States of America Patent
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Mar 4, 2014
Issued Date -
N/A
app pub date -
May 8, 2008
filing date -
May 8, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A drilling system, including: a drill bit; and a thruster to apply a force to the drill bit. The thruster may include: an inner tubular member disposed within and configured to axially move within an outer tubular member; a thrust piston to transmit a hydraulic force to the inner tubular member, the thrust piston separating an upstream fluid chamber and a downstream fluid chamber between the inner and outer tubular members; at least one pressure switch fluidly connected to the downstream fluid chamber to control flow of a fluid to and from the downstream fluid chamber via at least one fluid inlet and at least one fluid outlet.
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