Remote Seal for Pressure Sensor

摘要

A system for sensing downhole pressure in in a hydrocarbon well using a Fabry-Perot (F-P) sensor in series with a Fiber Bragg Grating and maintaining the back pressure on the sensor system with a surface sealing system and a surface pressure control system.

主权项

1. A system for sensing downhole pressure in in a subsurface well, comprising:
a. at least one downhole fiber optic gauge; b. at least one tubular conduit deployed from the surface and connected to said fiber optic gauge; c. at least one optical fiber deployed within said at least one tubular conduit from the surface to the fiber optic gauge; and d. a back-end pressure seal at the surface for maintaining a seal between the at least one tubular conduit and the at least one optical fiber exiting the conduit at the surface.