method and system for langfristichen monitoring of underground wasserenthaltenden zones

摘要

PCT No. PCT/FR95/01722 Sec. 371 Date Aug. 26, 1996 Sec. 102(e) Date Aug. 26, 1996 PCT Filed Dec. 22, 1995 PCT Pub. No. WO96/21165 PCT Pub. Date Jul. 11, 1996Within the scope of operations of long-term regular monitoring of an underground area, a seismic emission-reception device is installed in a fixed position on the production site, so as to have time stable operating conditions of identical emission-reception locations, identical quality of coupling with the formations, etc. The device includes a plurality of seismic sources (S1 . . . Sn) in fixed places at the surface or buried beneath the surface, on either side of a production well (1), and at least one array of receivers (R) set in a fixed position at the surface or in at least one well. Explosive sources, hydraulic overpressure sources, electromechanical sources, etc, can be used and connected to a plant (3) providing energy using an explosive gaseous mixture, which may be a constituent taken from the monitored area, fluid under pressure transmitting hydraulic shocks or vibrations, etc, by means of buried pipes or cables (2). The feeding and the triggering thereof are controlled by a central control and recording station (4). The method and device can for example be used for the filling of an underground gas storage reservoir.