Power Supply Issues and Remedies for Electric Drive Equipment in Shale Oilfields
A certain shale oil demonstration area in China is undergoing large-scale development,leading to a significant demand for drilling and fracturing units.However,electric drilling and fracturing operations are facing challenges due to limited access to electricity.An analysis of the power require-ments reveals that a single electric drilling rig requires 3 710 kVA of power supply capacity,while a sin-gle electric drive fracturing unit needs 38 061 kVA.Considering the current state of the regional electric power system,it is evident that the power supply capacity in the demonstration area is severely inade-quate at present.Although it can meet the demands of mechanical extraction equipment and station equipment while considering some electric rigs'power consumption,it falls short when supplying enough power for electric drive fracturing operations.Both electric drilling rigs and electric drive fractur-ing units cause interference within the grid system affecting its quality and safe operation stability.Fre-quent connections or disconnections between temporary electrical supply equipment and main grid fur-ther complicate scheduling management efforts.To address this situation,two solutions are proposed:firstly,actively promoting expansion and upgrading capacities within the existing power grid to support electrified construction operations on-site,secondly,leveraging abundant associated gas resources from shale oil production to construct gas-powered stations along with distribution networks as means to alle-viate pressure on electricity supply from traditional grids.It is recommended that priority be given to im-plementing the first solution,solution two can serve as a beneficial supplement to solution one.
NETL
NSTL
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