目前,5km以下深井采油的潜油泵,其电动机的功率可达700kW,其直径为10～28.5cm,长为6m。电动机选用优于H级的耐热材料绝缘,内充电机油,既提高了绝缘强度又增强了散热功能。电动机安装在油井管柱深约1500～5000m处,用扁电缆与地面或(海洋钻井时)栈桥上的电气系统相连接。潜油泵电动机借助来出的井液的流动而散热,电动机的温升一 At present, submersible pumps for deep well production below 5km have a power of up to 700kW and a diameter of 10-28.5cm and a length of 6m. Motor selection of better than the H-class heat-resistant material insulation, charging motor oil, both to improve the dielectric strength and enhance the cooling function. The motor is installed at the depth of about 1500 ~ 5000m in the oil well tubular string and connected with the electrical system on the ground or on the (or offshore drilling) trestle with a flat cable. Submersible pump motor comes out of the well fluid flow and heat, the motor temperature rise one