ESTIMATION OF THE FILTRATION PARAMETERS OF A BED BY THE DATA OF NONSTATIONARY INFLOW OF LIQUID TO VERTICAL WELLSP. E. Morozov, R. V. Sadovnikov, M. Kh. Khairullin, and M. N. Shamsiev UDC 517.958:532 Numerical algorithms based on the theory of ill-posed problems are suggested for estimation of the filtration parameters of a bed using the results of hydrodynamic studies of vertical wells. These algorithms allow determination of the coefficients of compressibility, efficiency, and hydraulic conductivity of the critical and distant zones and interpretation of the results of the hydrodynamic studies with account for the dependence of the filtration parameters on pressure Kazan' Scientific Center of Russian Academy of Sciences, Kazan', Russia; email: email@example.com. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 6, pp. 142-145, November-December, 2003. Original article submitted September 17, 2002; revision submitted April 3, 2003.