Subterranean solids separator

摘要

A debris removal device for subterranean use features a debris laden inlet tube within a housing to define a debris collection space at the lower end of the housing. An eductor draws the debris laden fluid to the top of the inlet tube where the flow stream is returned to a downhole direction with discrete passages formed between the housing and the inlet tube by spaced parallel plates. The plates feature extending tabs on diametrically opposed lower ends of the plates. As a result flow heading back downhole can release debris and turn back uphole in passages defined between the outside of the plates and the inside wall of the housing. The tabs allow the flow turning uphole to make a greater radius turn because of a crossing over effect created by the tabs. There is less turbulence and narrower width to the flowing stream going uphole.

主权项

1. A debris removal apparatus for subterranean use, comprising:
a tubular housing having an uphole and a downhole end; a debris laden flow inlet tube entering a closed lower end of said housing to define a debris collection volume between said inlet tube and an inner wall of said housing; whereupon debris inlet fluid flow carrying debris that entered said inlet tube is redirected from initial movement out an open end of said inlet tube to flow in an opposite direction in parallel paths defined between said inlet tube and said inner wall of said housing and below said open end by an assembly of a deflector having extending walls of unequal lengths, said walls extend below said open end; said debris inlet fluid flow after being deflected by said deflector turning toward said uphole end of said housing by passing outside said open end of said flow inlet tube a second time after clearing said extending walls while debris is separated toward said debris collection volume.