ANNULUS PLUGGING DETECTION USING A PRESSURE TRANSMITTER IN GAS-LIFT OIL PRODUCTION

摘要

Outer annulus plugging detection is provided for gas-lift oil wells. The outer annulus detection is effected using a pressure transmitter (100). The pressure transmitter (100) provides an indication of pressure within an outer annulus (22) of the oil well. A statistical parameter related to a plurality of outer annulus pressure readings is used to provide an indication of annulus plugging. Examples of the statistical parameter include means and standard deviation.