Inventors:
Fairl G. Henson - Grants Pass OR
International Classification:
E21B 1702
Abstract:
An air ventilation pipe for a well casing cover is comprised of a cylindrical externally screw-threaded socket which has a cylindrical externally screw-threaded portion projecting downwardly through the aperture in a well casing cover. An enlarged head at its inner part for the engagement of a wrench. A nut for securing a cylindrical tube within the socket. The socket and nut compress between them a metallic deformable ring into sealing relationship with the cylindrical tube.