The variation of seepage velocity, resistance coefficient, reservoir permeability and oil recovery in porous media of water-drive reservoir in direct current (DC) electric field are studied in detail.
实验研究了外加直流电场作用下水驱油藏多孔介质中的流体渗流速度、阻力系数、储层渗透率及原油采收率的变化特性。
The utility model relates to a new spindle which is an electric spindle. The electric spindle adopts a direct current brushless motor with a special structure to directly drive a spindle rod.
一种新型锭子——电锭，采用特殊结构的直流无刷电动机直接传动锭杆。
The utility model relates to a new spindle which is an electric spindle. The electric spindle adopts a direct current brushless motor with a special structure to directly drive a spindle rod.
一种新型锭子——电锭，采用特殊结构的直流无刷电动机直接传动锭杆。
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