G - Physics – 01 – M
Patent
G - Physics
01
M
G01M 3/08 (2006.01)
Patent
CA 2628731
A method of hydrostatic testing a section of a pipeline having fluid flow therethrough employing a pig train having a leading seal pig (12), a supply liquid slug (20), a first isolation tool (14), a test liquid slug (22) and a second isolation tool (16) including the steps of permitting the train to traverse the pipeline interior by the force of fluid flow until the lead isolation tool (14) is forwardly of and the second isolation (16) tool is rearwardly of the selected selection (10c) of the pipeline, securing the position of the pig train by applying exteriorly of the pipeline appropriate signals to actuate the isolation tools (14, 16) to each engage and seal the interior of the pipeline trapping the test liquid slug (22) therebetween; and pumping liquid from the supply liquid slug (20) into the test liquid slug to a hydrostatic testing pressure.
La présente invention concerne un procédé permettant d~effectuer un test hydrostatique sur une partie de canalisation par laquelle s~écoule un fluide et qui emploie un train à racleur se composant d~un racleur d~étanchéité (12) principal, d~un bouchon de liquide d~alimentation (20), d~un premier outil d~isolation (14), d~un bouchon de liquide test (22) et d~un second outil d~isolation (16). Le procédé comprend les étapes consistant à : permettre au train de traverser l~intérieur de la canalisation en se servant de la force de l~écoulement du liquide jusqu~à ce que le premier outil d~isolation (14) se trouve à l~avant et le second outil d~isolation (16) se trouve à l~arrière de la partie sélectionnée (10c) de la canalisation ; assurer la position du train de racleur en transmettant des signaux appropriés à l~extérieur de la canalisation afin d~actionner les outils d~isolation (14, 16) pour que chacun s~introduise dans et ferme hermétiquement l~intérieur de la canalisation bloquant ainsi le bouchon de liquide test (22) entre les deux ; et pomper le liquide du bouchon de liquide d~alimentation (20) et l~introduire dans le bouchon de liquide test afin d~obtenir une pression de test hydrostatique.
Buckley Wade S.
Freeman Eric N.
Payne Larry D.
Stover Kim R.
Smart & Biggar
Tdw Delaware Inc.
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