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AssigneeInstitut Francais du Petrole
InventorsPhilippe Staron, Jacques Cretin, Claude Beauducel, Thierry Lepage
Estimating the term…
Monitoring of an underground effluent deposit (2) and the exploration thereof are performed by installing various devices or user modules : reception arrays (Ri, Rj, Rk) such as geophones or hydrophones, condition sensors (C1, C2) , tools requiring electric power supply, etc, in various locations along one or several wells (1) drilled down into a formation, behind well casings or in the annular space between these casings and tubings, and by connecting these devices to a surface station (4), by means of a particularly simple and reliable multi-channel transmission unit. The surface station adapts the commands thereof according to the device to be controlled in return, of receiving all the signals they transmit whether analog or digital and coded, and adapts to several modes of allocation of the transmission channels. With such a system, long-duration monitoring operations may be carried out on a large scale under satisfactory economic conditions.
A system for monitoring of an underground deposit by an intervention device disposed at a fixed position in at least one well passing through said deposit, said intervention device including:
A method for monitoring of an underground deposit by a system including a surface assembly, at least one intervention assembly provided with a set function disposed in a fixed position in at least one well passing through said deposit, and at least one cable for linking the surface assembly to each intervention assembly which each intervention assembly including a user module, a monitoring module permanently connected to said at least one cable and provided with a decoder for decoding address signals and a switch, said method comprising:
Dependencies are inferred from the claim text.