Abstract: A method of repairing a length of pipeline which has experienced a wet buckle during deployment is disclosed. The method includes: severing the pipeline at locations which are spaced apart on opposite sides of a buckle and removing the buckled section to leave spaced severed ends; locating a pipeline pig in a pig deployment device; releasably coupling a pig insertion member of the pig deployment device to the pig; releasably coupling the pig deployment device to one of the severed ends; operating the pig deployment device to cause the pig insertion member to translate the pig out of the deployment device and into the pipeline through said severed end; releasing the pig insertion member from the pig and retracting the pig insertion member, leaving the pig in place within the pipeline; releasing the pig deployment device from said severed end; and welding the severed ends together.

Abstract: A connection device, unit incorporating a connection device, method of connecting a unit to a pipe, method of using a connection device and method of passing a device along a pipeline are provided. In one embodiment, a connection device (5) is disclosed which includes a through aperture extending between a first end of the connection device and a second end of the connection device so as to receive a section of a pipe (1), a support element (7) provided around the through aperture and one or more inflatable elements (23) provided inside the support element and around the through aperture. Each inflatable element has an inlet for the introduction and/or removal of an inflating medium. Inflation of the inflatable elements causes the connection device to firmly grip and so become anchored on the pipe.