a rupture assembly that may be employed in the oilfield industry facilitates the deployment of a tubing string in a well . the rupture assembly may be installed at the bottom of the tubing string for the purpose of trapping air in a lateral section of the tubing , between the rupture assembly and an upper sealing assembly . as a result , the buoyant force in the lateral section reduces the drag encountered while running the tubing through the casing , thereby significantly reducing rig time , or permitting operations where none were possible previously . once at landing depth , surface pressure may be added to burst and remove the seal and rupture assemblies .