Method of analysing fluid influxes in hydrocarbon wells

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

E - Fixed Constructions

21

B

354/30

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

Patent

CA 1325278

Method of Analysing Fluid Influxes in Hydrocarbon Wells Abstract The invention relates to a method of analysing fluid influxes into an oil well from an underground formation. During a drilling mud transient flow state, the successive values of the rate Qi or pressure Pr of injection of the drilling mud into the well and the successive values of the rate Qr or pressure Pr of return of the drilling mud to the surface are measured. The changing values of the rate or pressure of injection are compared with the changing values of the return rate or pressure. From this comparison the nature and volume of the fluids that have penetrated into the well are determined. Application to the drilling of oil wells. (Figure 1)

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