抽油机是否正常工作对油井生产非常重要 ,常常因井下事故或抽油机本身的故障 (如抽油杆杆断、电机皮带轮脱落或人为因素等 )使抽油机停止工作。这就需要对抽油机工况进行及时监测 ,但油井一般分布在广阔的地域中 ,只靠人工去寻检 ,工作量非常大 ,而且不能及时反映抽油机工况 ,? Whether the pumping unit is working well is very important for well production. The pumping unit often stops working because of a downhole accident or a breakdown of the pumping unit itself (such as rod break, motor pulley disengagement, or human factors). This requires pumping condition monitoring in a timely manner, but the wells are generally distributed in a vast area, only rely on manual inspection, the workload is very large, and can not reflect the condition of the pumping unit in time?