The present invention provides a method for oil and gas drilling method and drilling mud automatic perfusion system. It can process in drilling mud leakage or leaks cycle and delay protection pump to control the column shaft automatic mud pouring display, drill string number and quantity, the well poured mud bucket and well leak alarm, to keep a well bore mud column pressure, prevent sticking and blowout the accident. This system has many functions, simple operation, reliable performance, in the maintenance of equipment to stop tripping, drill end and empty wells are automatically filled with mud into the well, with no indication of oil and gas wells drilling can prevent splashing mud shackle.
【技术实现步骤摘要】
【技术保护点】
一种用于钻井起下钻泥浆自动灌注的方法,在起钻过程中采用灌注间隔定时向井筒自动灌满或自动定量灌注泥浆,在灌注间隔定时向井筒自动定量灌注泥浆时能监测井涌并进行井涌声光报警,其特征在于:a.用压力继电器[4]监测起下钻柱悬重液压变化,周期定柱 计数继电器[23]计数起下钻柱悬重液压变化次数,灌注间隔定时到后按周期定柱计数继电器[23]调定的起下钻柱数周期地自动控制起动灌注泵[36]向井筒环形空间[54]灌注泥浆,b.使用自动灌注方法时,泥浆灌满井筒[44]后从溢流管[43]流 出,经液流传感器[47]停止灌注泵[36]运转,c.使用自动定量灌注方法时,周期定柱替补泥浆的灌注时间到,停止灌注泵[36]运转,d.停止起下钻、起钻末和下钻初,灌注间隔延时间歇地自动起动灌注泵[36]运转向井筒[44]灌满泥浆, e.溢流管[43]中的泥浆持续液流时间,大于井筒[44]灌满停泵后溢完泥浆的最长时间,红色液流指示灯[10]亮,f.溢流管[43]中泥浆持续液流时间,大于钻具下入井筒[44]后替出泥浆连续液流的最长时间,警报器[13]进行井涌声音报警, 红色液流指示灯[10 ...
【技术特征摘要】
【专利技术属性】
技术研发人员:邓福泉,
申请(专利权)人:四川石油管理局钻采工艺研究所,
类型:发明
国别省市:51[中国|四川]
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