초록 ▼

An apparatus and method for testing the integrity of oil delivery tubing within an oil well casing includes a rupture disc holder coupled with the tubing near the lower end thereof. As successive lengths of tubing are added, the assembled tubing is subjected to a test pressure with the pressure main

An apparatus and method for testing the integrity of oil delivery tubing within an oil well casing includes a rupture disc holder coupled with the tubing near the lower end thereof. As successive lengths of tubing are added, the assembled tubing is subjected to a test pressure with the pressure maintained by the presence of the rupture disc within the holder. When the tubing assembly is complete, it is subjected to a higher burst pressure sufficient to rupture the disc. This opens a passage through the holder for installation of the push-pull rod and for passage of oil from the pump, which is coupled with the tubing below the level of the holder.

대표청구항 ▼

[ What is claimed is:] [1.] Apparatus for testing the integrity of oil delivery tubing within an oil well casing comprising:a tubular holder provided with a passage therethrough and having opposed ends,one of said ends being adapted to be attached to an end of one section of the oil delivery tube; a

[ What is claimed is:] [1.] Apparatus for testing the integrity of oil delivery tubing within an oil well casing comprising:a tubular holder provided with a passage therethrough and having opposed ends,one of said ends being adapted to be attached to an end of one section of the oil delivery tube; anda rupture disc within said holder in normally closing relationship to said passage,said disc being openable under pressure to allow substantially free flow of liquid there past through said passage;said disc comprising a circular metal membrane having a peripheral flange portion and a central bulged segment defined by a convex surface and a concave surface on opposite sides of said section, said disc being positioned in the holder in a location with the concave surface thereof in facing relationship to said one end of the section on which the holder is mounted, andwherein said disc is provided with a discontinuous arcuate score line in the central bulged segment thereof, the opposed extremities of the score line being in spaced relationship and defining a hinge area therebetween,said rupture disc being capable of withstanding a hydraulic pressure thereagainst of a first test value and constructed to rupture and open when a second burst pressure substantially higher than said test pressure is applied to the disc.