G - Physics – 01 – M
Patent
G - Physics
01
M
73/118
G01M 3/00 (2006.01)
Patent
CA 1055275
LEAK TESTING METHOD AND APPARATUS FOR TUBULAR MEMBERS AND PACKER MEANS THEREFOR Abstract of the Disclosure A body having a longitudinal opening through which a tubular member may extend for testing, such as two tubular members connected together by threaded connections or a coupling. Positioned along the longitudinal opening in the body are longitudinally spaced annular seal means. The body includes passage means for conducting fluid pressure against the outer circumferential surface of each of the annular seal means. Back-up means are mounted in association with each annular seal means for inward and outward radial movement with such seal means, each of the back-up means comprising anti- extrusion means to prevent significant extrusion of the seal means responsive to pressure imposed thereon. Means on each of the back-up means and on the seal means coact to urge the back-up means into tighter frictional engagement with the tubular members upon the application of a continuing radial force to the seal means by the pressurized actuating fluid after the seal means are moved into sealing engagement with the tubular member. The application of the pressurized actuating fluid against the outer circumferential surface of the annular seal means forces the seal means and the back-up means carried thereby into engagement with the tubular member whereby the spaced annular seal means and the body form a closed chamber which seals the exterior of the tubular member. The body includes a further passageway for supplying a pres- surized test fluid into the closed chamber for externally testing the tubular member.
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