| 摘要 |
<p>An apparatus for gas lift includes an electronics unit 101 for installation, together with a plurality of gas compressors 301 and a plurality of motors for driving the respective gas compressors 301, in a well of a gas reservoir. The electronics unit 101 comprises a plurality of modules 113 and a channel 109 for transmitting production gas from the gas-producing formation to the plurality of gas compressors 301. Each module 113 comprises an electrical power system for powering a respective one of the motors. The electrical power system in each module 113 is operative to receive a DC power input and comprises a power electronics inverter to provide a controlled AC power output. The channel 109 and the plurality of modules 113 are adjacent, such that production gas flowing through the channel 109 serves to cool the power electronics inverter in each module 113. The electronics unit 101 is located in the well upstream of the compressors 301 and motors.</p> |
