Pipe threading arrangement
AssigneeLattice Intellectual Property Limited
InventorStephen Robert Delaforce
Life of this patent
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Abstract
A pipe threading arrangement includes a launch body (13) and a parachute (15) within tube (12). The parachute is launched into pipe (2) via slide valve (1) and brings with it a threading cable (19). At a remote location within the pipe (2) the parachute is stopped by a catch arm (8) with associated catch finger (5). The parachute is deflated and retrieved, together with the threading cable, via the slide valve into the catch body (4).
Claims12
Pipe threading apparatus including launch means for launching a parachute from a first location through the pipe to a second location under fluid pressure;
- and
- stopping means for positioning at the second location for stopping the further passage of the parachute, the parachute being configured to carry a cable so as to provide a connection between the first and second locations.
A method of threading a pipe between first and second locations comprising providing an aperture in the pipe at first and second spaced locations, providing a stopping device within the pipe at the second location, launching a parachute carrying a threading cable from the first location allowing the parachute to move to the second location by means of fluid flow through the pipe until stopped by the stopping device and retrieving the parachute with the attached cable to provide pipe threading between the first and second locations.
Dependencies are inferred from the claim text.