METHOD FOR DETERMINING MAIN PARAMETERS OF SIMULTANEOUSLY OPERATING GAS FORMATIONS Russian patent published in 2013 - IPC E21B47/06 

FIELD: oil and gas industry.

SUBSTANCE: according to the proposed method, using geophysical equipment in several steady-state operating modes of gas well with exposure of the well in each of the modes at least for 1-3 months simultaneously with measurement of pressure and flow rate profiles in the influx zone, temperature profile is additionally measured; after that, temperature of the gas supplied to the well shaft from each operating gas formation is determined, and bottomhole pressure is fixed in the middle of depth of each operating gas formation. Besides, after the well is changed over to the next steady-state mode after the specified parameters are measured, value of effective Joule-Thomson coefficient is determined for the previous steady-state mode as per the formula. Later, considering the obtained value of effective Joule-Thomson coefficient, formation pressure, temperature and filtration coefficients are determined as per formulae.

EFFECT: improving determination accuracy of formation pressure and filtration coefficients of simultaneously operating gas formations at reduction of the number of investigations in the wells; providing the determination of formation temperature of each operating gas formation.

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