AUTOMATIC FLOW CONTROL SYSTEM FOR WELL UNCOVERING RESERVOIR WITH BOTTOM WATER Russian patent published in 2007 - IPC E21B47/10 G01F1/74 

FIELD: gas production industry, particularly for gas production and underground storage, namely control equipment therefore.

SUBSTANCE: system comprises flow rate sensor included in inner control loop and installed in gas outlet line adapted to discharge gas from gaslift pipe of gas well, automatic gas well flow rate regulator and control nipple installed in the gas outlet line. Flow rate sensor is linked to the first input of automatic gas well flow rate regulator. Automatic gas well flow rate regulator output is connected to control nipple. System additionally has bottom water cone top level sensor, automatic level regulator and lever selector included in outer control loop. The bottom water cone top level sensor is connected to the first input of automatic level regulator. The level selector is linked to the second input of automatic level regulator. Level regulator output is communicated with the second, namely setting, input of automatic gas well flow rate regulator.

EFFECT: provision of automatic keeping of extreme water-free production rate from gas well uncovering reservoir with bottom water in the case of reservoir heterogeneity and reservoir permeability uncertainty, possibility to maintain pre-selected threshold bottom water cone top level by gas well flow rate change.

1 dwg