Method of detecting a fluid influx which could lead to a blow-out during the drilling of a borehole

摘要: This invention is intended for use in the process of drilling an oil well and has to do with a detection fluid influx which could lead blow-out. consists measuring inlet flow rate A mud coming into outlet B rising from order arrive at quantity: C=a.B-A where scale factor value can be altered so as bring about recalibration measurement. Such made each time average C, relation given period time, reveals significant difference between rates, alarm set off accordance frequency recalibrations corresponding excess rate.