Multivariable transmitter lifts gas and lowers costs

摘要

In many pressure sensing applications, both differential and static pressure must be measured. Traditionally, this required two separate pressure transmitters, but newer instruments allow both measurements to be made with one device. This saves costs up front and throughout the product lifecycle, and it also simplifies installation. In a gas lift system, a compressed gas is injected into the downhole well production tubing to reduce the hydrostatic pressure of the drilling fluid column. As a result of the pressure reduction, oil or gas can be produced at higher flow rates. Proper monitoring and control requires measurement of both static and differential pressure.