Patent ID: 7213642
Filing Date: 2007-05-08
Classification: B09C,C02F,E21B

Abstract:
1. A diffuser comprising: a first elongated member having a sidewall, a first portion along the length of the sidewall having solid sidewalls and a second portion along the length of the sidewall having well-screen sized openings, with the first elongated member defining an interior portion of the diffuser; a second elongated member having a second sidewall having a plurality of micron size openings, the second member disposed through the interior portion of the diffuser; a third elongated member having a third sidewall having a plurality of microscopic openings, said third member being disposed coaxial with the first and second members; with a first end of the second and third elongated members being sealed; and an inlet arrangement disposed at a second end of the diffuser for supporting a first inlet fitting to provide an ingress to a peripheral interior portion of the diffuser adjacent the first member, a second fitting to couple to an interior region between the second and third members, and a third fitting to couple to an interior region provided by the third member.