在油气并钻探起钻作业时,常规的作法是靠人工操作钻井泥浆泵,通过泥浆管汇经井口向井筒灌注泥浆,使井筒液柱压力与地层压力趋于平衡。但这种操作方法有以下几个弊病:1.在起钻作业时,因操作失误,未及时灌注泥浆,有时引起井涌,井喷现象发生。2.灌入量不易掌握,凭操作者观察出口槽是否返出泥浆来决定,如一旦发生井漏判断不及时。3.井筒内泥浆液面变化不易察觉,如产生井涌、井漏前的预兆往往被忽略。 In drilling and drilling for oil and gas, it is common practice to rely on manual drilling mud pumps to inject mud into the wellbore through the wellhead to balance wellbore pressure with formation pressure. However, this method of operation has the following disadvantages: 1. In the drilling operation, due to operational errors, not timely infusion of mud, sometimes causing kicks, blowout phenomenon. 2. Infusion is not easy to grasp, with the operator to observe whether the outlet tank to return to the mud to decide, such as in the event of a leak is not judged in time. 3. Wellbore slurry level changes are not easy to detect, such as the production of wells, truncated omen tend to be ignored.