METHOD AND APPARATUS FOR MEASURING A PARAMETER WITHIN THE WELL WITH A PLUG

摘要

The invention provides a system for measuring a parameter within a well, made of: a first apparatus comprising a first reel of first wound optic fiber line (or fiber) able to be unwound from the first reel, at least a first sensor able to measure the parameter of the well, wherein an information on said parameter can be transmitted trough the first optic fiber; a second apparatus comprising a second reel of second wound optic fiber line able to be unwound from the second reel, an extremity of the second optic fiber being fixed to a reference point; a light transmitter or receiver device linked to the reference point and able to generate or detect a light pulse through the second optic fiber line; and means to exchange said light pulse between first and second optic fiber line.