Debris Catcher with Retention within Screen
First Claim
1. A debris catcher for subterranean use, comprising:
- a housing having a first inlet to provide pressurized fluid to an eductor assembly mounted in a passage therein for inducing flow through said passage;
a second inlet to receive debris laden fluid induced to flow into said passage by said eductor assembly;
at least one screen in fluid communication with said second inlet and disposed in said passage, said screen defining at least one debris collection settling volume.
3 Assignments
0 Petitions
Accused Products
Abstract
A debris catcher uses induced circulation from a venturi to urge debris laden flow into the lower end of a housing. An inlet tube maintains velocity so as to keep the debris moving with the fluid stream as it goes up the inlet tube. A screen fits over the open end of the inlet tube and runs down around the inlet tube toward the entrance of the debris laden fluid into the lower end of the housing. There is a clearance around the cylindrical portion of the screen so some flow can exit that way. There is also an open exit through the top of the screen that can be reached after the fluid stream makes two hairpin turns. Many modules can be stacked. Each module has a large screen area for flow to exit and progressive modules can have smaller screen openings in an uphole flow direction.
17 Citations
24 Claims
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1. A debris catcher for subterranean use, comprising:
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a housing having a first inlet to provide pressurized fluid to an eductor assembly mounted in a passage therein for inducing flow through said passage; a second inlet to receive debris laden fluid induced to flow into said passage by said eductor assembly; at least one screen in fluid communication with said second inlet and disposed in said passage, said screen defining at least one debris collection settling volume. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification