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

1988-08-02

1989-09-19

Massie, IV, Jerome W.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Measuring or indicating drilling fluid rate of flow

175 50, 73155, E21B 4710

Patent

active

048672548

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 p.sub.i and return pressure p.sub.r 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 M.sub.g 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.

REFERENCES:
patent: 3726136 (1973-04-01), McKean et al.
patent: 3740739 (1973-06-01), Griffin, III et al.
patent: 3750766 (1973-08-01), Thompson et al.
patent: 3982432 (1976-09-01), Hammond
patent: 4188624 (1980-02-01), Hochsprung et al.
patent: 4253530 (1981-03-01), Sharki et al.
patent: 4527425 (1985-07-01), Stockton
patent: 4565086 (1986-01-01), Orr, Jr.

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