20100111467 | MEASURING APPARATUS, VENTURI AND VENTURI INSERTION TOOL - This invention comprises a system for measurement of temperature and pressure in oil wells. It comprises a single hybrid mandrel housing a double pressure and temperature optical sensor, capable of measuring temperature and pressure both in the ring and in the production tubing of an oil well and an insertable venturi tube inserted in the direction of a pressure differential optical sensor, capable of taking flow rate measurements, the installation aspects of which are substantially simplified. | 05-06-2010 |