GREASE INJECTION SYSTEM FOR RISERLESS LIGHT WELL INTERVENTION
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United States of America Patent
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Issued Date -
Jun 18, 2009
app pub date -
Dec 12, 2007
filing date -
Dec 12, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A subsea lubricator system is disclosed which includes a lubricator tube adapted to be positioned subsea above a subsea well, a pressure control head adapted to be positioned above the lubricator tube, at least one pressure sensor adapted for sensing at least one of a pressure in the subsea well or an ambient seawater pressure proximate the pressure control head, and at least one pump that is adapted to be positioned subsea to inject a lubricant into the pressure control head at a pressure that is greater than the sensed pressure. A method of operating a subsea lubricator system positioned above a subsea well, the lubricator system including a pressure control head, is also disclosed which includes monitoring at least one of a pressure within the well and an ambient seawater pressure proximate the lubricator system, and injecting a lubricant into the pressure control head at a pressure that is greater than the monitored pressure.
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