Casing mounted metering device

Abstract

The present invention relates to an inflow control device for controlling the flow of fluid into a tubular deployed in a. wellbore comprising coupling between joints of tubulars. The inflow control device is mounted transversely through the coupling in any inflow can control devices the initial condition fluid flow between the exterior and interior of the tubular is prevented. As sufficient pressure is exerted upon the inflow control device from the interior of the tubular the inflow control device is actuated to allow fluid flow between the interior and exterior the tubular. A nozzle in the inflow control device allows fluid to pass at a preset rate. The present invention furthermore relates to a method of assembling an inflow control device according to the invention and to a completion system comprising an inflow control device according to the invention.

What is claimed is: 
     
         1 . A downhole device comprising:
 a tubular having, a center, an exterior region and an interior region;   a flowpath connecting the exterior region to the interior region;   a housing in the flowpath;
 wherein the housing has a throughbore; 
   an erodible disk;   a sealing disk;
 wherein the erodible disk supports the sealing disk preventing a first fluid flow from the exterior region to the interior region; and 
   a rupture disk preventing a second fluid flow from the interior region from reaching the erodible disk below a predetermined pressure.   
     
     
         2 . The downhole device of  claim 1 , wherein the erodible disk has fluid ports aligned with the flowpath. 
     
     
         3 . The downhole device of  claim 1 , wherein the throughbore has a nozzle aligned with the flowpath. 
     
     
         4 . The downhole device of  claim 1 , wherein the throughbore is a nozzle aligned with the flowpath. 
     
     
         5 . The downhole device of  claim 1 , wherein the second fluid flow from the interior region removes the sealing disk to allow the second fluid flow to reach the exterior region. 
     
     
         6 . The downhole device of  claim 1 , wherein the erodible disk is polyglycolic acid. 
     
     
         7 . The downhole device of  claim 1 , wherein the throughbore is generally perpendicular to the fluid flow through the tubular.