Advanced method and device for improving the production logs of

Details Advanced method and device for improving the production logs of Advanced method and device for improving the production logs of

1991-06-11

1993-05-04

Raevis, Robert

Measuring and testing

Borehole or drilling

Downhole test

166250, 73151, E21B 4700, E21B 4908

Patent

active

052070964

ABSTRACT:
The method involves introducing a pumping and measuring set into a production well fitted with a pipe or liner perforated in a part extending through a producing zone. This set is fastened to the end of a flow string and comprises an activation pump and at least one set for measuring the produced effluents. The improvement essentially consists in using secondary pumping means such as a positive-displacement type pump, for example, in order to suppress the pressure drop undergone by the effluents during passage through the measuring zone, which distorts the measured values and causes parasitic flows by bypassing between the liner and the wall of well. The extent of these leak rates can be measured through a variation of the flow rate of the positive-displacement pump.

REFERENCES:
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patent: 3083774 (1963-04-01), Peters et al.
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patent: 3750766 (1973-08-01), Thompson et al.
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patent: 4392376 (1983-07-01), Lagus et al.
patent: 4442895 (1984-04-01), Lagus et al.
patent: 4507957 (1985-04-01), Montgomery et al.
patent: 5095745 (1992-03-01), Desbrandes

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