Method and device for the measuring physical parameters in a production shaft of a deposit of underground fluid storage reservoir
First Claim
1. 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.
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Accused Products
Abstract
An operating well of a fluid storage reserve, 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. A device for the measurement of physical parameters 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 the protective sheath to be connected to the electrical link cable. 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.
37 Citations
21 Claims
- 1. 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.
- 20. Method 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 at least one sealed connecting subassembly arranged at least partially in said annular space and including a half-transformer is installed stationarily and integrally with the central operating tubing of the well, in the vicinity of the protective sheath and electrically connected to the electrical link cable, in that at least one compact, sealed measuring assembly provided with a half-transformer is introduced removably through the central tubing with the aid of a tool remotely controlled from the surface owing to a current-carrying cable and in that this measuring subassembly is positioned in a side pocket formed in the central tubing to which is fixed the connecting subassembly, in such a way that the measuring subassembly is coupled inductively to the connecting subassembly connected to the electrical link cable.
Specification