Fluid filtering device for a wellbore and method for completing a wellbore

摘要

A sand control device for restricting flow of particles from a subsurface formation into a tubular body within a wellbore, the device being divided into compartments along its length, each compartment comprises a base pipe. The base pipe defines an elongated tubular body having a permeable section and an impermeable section within each compartment, also comprising a first filtering conduit and a second filtering conduit. The filtering conduits are arranged so that the first filtering conduit is adjacent to the non-permeable section of the base pipe, while the second filtering conduit is adjacent to the permeable section of the base pipe.

主权项

1. A sand control device for restricting the flow of particles within a wellbore, the sand control device comprising:
at least a first compartment, wherein each compartment comprises:
a base pipe having a permeable section and an impermeable section,a first filtering conduit circumscribing the base pipe and forming a first annular region between the base pipe and the first filtering conduit, the first filtering conduit having a filtering medium adjacent the impermeable section of the base pipe,a second filtering conduit also circumscribing the base pipe and forming a second annular region between the base pipe and the second filtering conduit, the second filtering conduit having a filtering medium adjacent the permeable section of the base pipe, wherein the filtering medium of the first filtering conduit and the filtering medium of the second filtering conduit each comprises a wound wire screen or a wire mesh,a blank tubular housing circumscribing the second filtering conduit and forming a third annular region between the second filtering conduit and the surrounding housing, andan under-flow ring disposed along the base pipe between the first filtering conduit and the second filtering conduit, the under-flow ring placing the first annular region in fluid communication with the third annular region, and the under-flow ring having an outer diameter that sealingly receives the blank tubular housing at an end.