The invention relates to a process for realizing a re-closable container made of extensible paper, which comprises at least partly inserting a closing element made of paper material provided with a base wall and a lateral wall, internally of a housing compartment of the container. A pair of walk-off compensated, non-linear optical crystals is disposed with the cavity and converts energy at the pump wavelength to energy at longer signal and idler wavelengths. When the actual measurement value doesn’t exceed a prescribed threshold, the control part predict the first sampling value at the next sampling time. The telecommunications services provider may communicate with the telecommunications customers using a TCPIP connection. The introducer includes an introducer distal end. The system enables the effective sealing of the production casing volume from the surface casing volume such that any gases leaking from either volume can be independently released from independent valves.