Patent ID: 6644403
Filing Date: 2003-11-11
Classification: E21B

Abstract:
Device for the measurement of physical parameters in an operating well of a deposit or underground fluid storage reserve, which operating well includes an outer wall delimiting, with a central operating tubing of the well, an annular space in which is placed a protective sheath of an electrical link cable between a surface installation and elements arranged in the well, characterised in that the device includes at least one compact, removable, sealed measuring subassembly arranged in a housing in communication with the interior of the central tubing and at least one compact, sealed connecting subassembly integral with the central tubing of the well and arranged at least partially in the annular space in the vicinity of said protective sheath in order to be connected to said electrical link cable and in that the sealed measuring subassembly and the sealed connecting subassembly have plane contact surfaces each associated with a half-transformer so as to form an inductive coupling between the measuring subassembly and the connecting subassembly.