Patent ID: 6464004
Filing Date: 2002-10-15
Classification: E21B

Abstract:
A tubing carried, retrievable well monitor and control system for deployment in a cased well borehole, comprising:at least one tubing carried, side pocket mandrel(s) capable of being run into a well bore on a production tubing string, said at least one mandrel(s) having a bore extending therethrough for connecting tubing above and below each such mandrel and having at least one downwardly facing side instrument pocket therein, said mandrel(s) being sized to fit inside well casing in the well, said downwardly facing side pocket(s) having controllably sealed fluid ports capable of communicating fluid pressure and flow to the interior thereof, and each such downwardly facing side pocket being electrically interconnected to each other such downwardly facing side pocket; and at least one wireline retrievable, through tubing sized, instrument installed in at least one of such mandrel(s), said instrument having at least one means for monitoring tubing fluid pressures and casing/tubing annulus fluid pressure and means for controlling fluid flow from the casing/tubing annulus into the production tubing string in response to said tubing fluid pressures and casing/tubing annulus fluid pressure and means for transmitting such pressure measurement data to the surface of the earth from the mandrel(s).