MODE OF DETERMINATION OF THE CHARACTER OF SATURATION OF PLAST- COLLECTORS Russian patent published in 2005 - IPC

FIELD: the invention refers to geophysical methods of researching of oil wells and designed for evaluation of dominant saturation of a collector with oil or water.

SUBSTANCE: measurements of natural geo acoustic signals are determined along the axle of a well cased with a column in three or more given ranges of frequencies. The value of the terms ratio of amplitudes of signals registered in each given frequency range is determined in relation to the amplitude of the signal registered in the range of the least frequencies. The character of saturation of the plast-collectors is determined is evaluated according to an established value of relation of the amplitudes of signals registered in ranges of frequencies to the signals of the low-frequency range, equal 0,8. The exceeding of this value indicates on the dominant saturation of the plast-collector with oil.

EFFECT: increases efficiency of determination of the character of saturation of collectors in wells cased with tubes.

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