CPC E21B 43/2607 (2020.05) [E21B 43/12 (2013.01); E21B 43/26 (2013.01)] | 20 Claims |
1. An electrically driven fracturing system, comprising:
a manifold connected to a wellhead;
a plurality of frequency converter apparatuses;
a plurality of electrically driven fracturing apparatuses connected to the manifold and configured to pressurize low-pressure fracturing fluid and output the pressurized fracturing fluid to the manifold; and
a centralized control system, wherein:
each of the plurality of frequency converter apparatuses is correspondingly connected to at least one electrically driven fracturing apparatuses of the plurality of electrically driven fracturing apparatuses, and comprises a frequency conversion control system to form a plurality of frequency conversion control systems,
each of the plurality of electrically driven fracturing apparatuses comprises an electric motor, and a fracturing control system to form a plurality of fracturing control systems,
the centralized control system is in communicating connection with the fracturing control systems such that the centralized control system and the fracturing control systems form a loop structure in which the fracturing control systems are connected in series with each other and with the centralized control system,
the centralized control system is in communicating connection with the frequency conversion control systems via one or more of the fracturing control systems, and
each of the plurality of frequency converter apparatuses is configured to adjust a rotating speed of the electric motor by adjusting a frequency of the electric motor to adjust pressure and flow rate of the pressurized fracturing fluid output by the multiple electrically driven fracturing apparatuses.
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