WELL SCREEN HAVING AN INTERNAL ALTERNATE FLOWPATH

摘要

A well screen having an internal, blank alternate flowpath for delivering fracturing fluid/gravel slurry to different levels within a well annulus. Th e well screen is comprised of an outer pipe (18) which is positioned over a ba se pipe (17) thereby forming an annulus (19) therebetween. The circumference of each pipe has a perforated sector and a blank sector, both of which extend along their respective lengths. When assembled, the respective perforated sectors are aligned to form a perforated, production sector and the respecti ve blank sectors are aligned to form the blank, alternate flowpath. The base pi pe is wrapped with wire (30) to prevent solids from flowing through the opening s therein. Slurry is pumped into the annulus where it flows circumferently (33 ) from the blank, alternate flowpath to exit into the well annulus through the openings in the perforated sector of the annulus.