Method of controlling fluid influxes in hydrocarbon wells

Details Method of controlling fluid influxes in hydrocarbon wells Method of controlling fluid influxes in hydrocarbon wells

E - Fixed Constructions

21

B

255/25, 166/50

E21B 47/10 (2006.01) E21B 21/08 (2006.01) E21B 49/00 (2006.01)

Patent

CA 1296707

Method of Controlling Fluid Influxes in Hydrocarbon Wells Abstract The invention relates to a method of real time control of fluid influxes into an oil well from an underground formation during drilling. The injection pressure Pi and return pressure Pr and the flow rate Q of the drilling mud circulating in the well are measured. From the pressure and flow rate values, the value of the mass of gas Mg in the annulus is determined, and the changes in this value monitored in order to determine either a fresh gas entry into the annulus or a drilling mud loss into the formation being drilled.

573546

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