For high precision downhole pressure measurement, we use Sondex quartz pressure gauge tool, employing an industry standard quartz crystal pressure transducer. The tool provides both pressure and gauge temperature outputs.
Fluid pressure applied to the quartz tension member changes the resonant frequency of the quartz crystal. Thermal compensation of the sensor and measurement of its temperature allows the calculation of very accurate, high-resolution downhole pressures.
Pressure readings are digitized to 24-bit resolution and gauge temperature to 16 bits and transmitted on one channel of the telemetry system simultaneously with other logging signals. In surface readout applications two pressure tools can be used with output from both tools transmitted in a single digital channel.
|The study of hydrodynamic characteristics is one of the most important methods to monitor production life of reservoir. It consists of: