A method and system are described, for the continuous remote monitoring of deformations in a pipeline (10) suitable for the transportation of a pressurized fluids, such as, for example, pipelines designed for the transportation of low- and high-pressure fluids (natural gas, crude oil, water, oil products) that cannot be controlled by using Intelligent Pipeline Inspection Gauge (PIG) systems, or sections of pipeline exposed to the risk of landslides and/or earthquakes in which catastrophic breakages can be generated, with a consequent interruption in the transportation service. The method and system envisage the application of the guided wave technique for the remote-controlled monitoring of the tensional state of the pipeline (10) also on extensive sections, having a length equal to hundreds of meters, using a relatively reduced number of sensors (12) installed on the outer surface of the pipeline (10).