Internal fluid screen to prevent nozzle and port plugging

Details Internal fluid screen to prevent nozzle and port plugging Internal fluid screen to prevent nozzle and port plugging

E - Fixed Constructions

21

B

255/68

E21B 10/60 (2006.01) B01D 29/44 (2006.01) E21B 21/00 (2006.01) E21B 27/00 (2006.01)

Patent

CA 1157462

ABSTRACT A strainer is shown for use with a downhole tool through which drilling fluid is circulated during the drilling of deep oil wells and the like. The strainer provides a plurality of narrow slots which prevent the passage of material therethrough that might be entrained with the fluid and which otherwise would plug ports or nozzles or restrict flow passages below the strainer.

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