Detecting outflow or inflow of fluid in a wellbore

Details Detecting outflow or inflow of fluid in a wellbore Detecting outflow or inflow of fluid in a wellbore

1991-07-15

1992-12-08

Neuder, William P.

Wells

Submerged well

Testing

175 48, 73155, E21B 4710

Patent

active

051689324

ABSTRACT:
A method is provided for detecting outflow of fluid from an offshore wellbore to a surrounding earth formation or inflow of fluid from the formation of the wellbore. The wellbore is in fluid communication with a conduit extending between the wellbore and an offshore structure floating above the wellbore, which wellbore and conduit are at least partly filled with a body of fluid. Liquid is injected into the body of fluid at a first predetermined flowrate, and liquid is discharged from the body of fluid at a second predetermined flowrate. A variation of the content of the body of fluid is then determined.

REFERENCES:
patent: 4440239 (1984-04-01), Evans
patent: 4527425 (1985-07-01), Stockton
patent: 4610161 (1986-09-01), Gehrig et al.
patent: 5006845 (1991-04-01), Calcar et al.

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