METHOD FOR DETERMINING FILTRATION PARAMETERS OF COMPLEX BUILD COLLECTORS AND MULTI-LAYER OBJECTS Russian patent published in 2006 - IPC E21B47/10 

FIELD: mining industry, in particular, technology for determining filtration parameters of oil and gas wells.

SUBSTANCE: in accordance to method, directly in influx intervals a deep device is mounted, pressure and temperature are registered simultaneously inside all producing intervals of well borehole. Well is transferred to liquid extraction mode with registration of debit at the mouth. Then, well is stopped for pressure restoration. On basis of measurement results thermograms and barograms are built. Pressure and temperature are registered at non-stationary well operation mode. On basis of resulting thermograms graphs of temperature derivatives are built oppositely to each producing interval and on basis of these duration of non-stationary temperature alteration mode is determined in well area. Temperature derivatives ratio coefficient is determined. Then on basis of given formula fluid filtration speed is determined in each producing interval. On basis of barometry curve during well stop pressure gradient in seams being researched is determined. From fluid filtration speed in each producing interval and the pressure gradient, penetrability and hydro-conductance of each producing interval are determined.

EFFECT: increased informative efficiency during thermo-hydro-dynamic tests of multi-layer objects, complex build collectors, horizontal wells and wells with non-cementing tail.

5 dwg, 1 ex