Elements of mathematical models of thermobaric treatment of the bottomhole formation zone oil and gas wells

摘要

It is known, that the so called powder generators pressure (PGP) have found the widespread application in practice. In body pressure generators power charge combustion takes place in a special steel chamber isolated from well liquid, but in bodyless generators directly in the well liquid. In this work there has been considered the mathematical model elements of formation bottom-hole zone permeability increase by combustion of bodyless charge and based on the model there has been estimated the possible employment effectiveness of thermal pressure treatment. The calculations have been made lot a number of cases: for non-perforated well, opened out well bottom and perforated well.Apparently the estimation of thermal vacuum bottom-hole-zone treatment to increase permeability of oil and gas wells requires the analysis of a number of factors influence on the bottom-hole-zone permeability.It's clear first of all that thermal pressure treatment efficiency is found up with the estimation of bottom-hole-zone permeability increase by hot filtration through is resulted in gas escape due to charge combustion. The hot gas passes through the filtration channels in the bottomhole formation zone, melts the solid deposits in the form of paraffin, asphaltene - viscous tar. Moreover, due to the high thermal conductivity of casing, the temperature of the powder gases is reduced. To construct this mathematical model number of simplifications are made, namely the interaction of powder gas and the wellbore fluid does not allow evaporation of the liquid near the gas bubble is not considered heating casing and pipes. It is of scientific interest in further investigation of thermobaric treatment of the bottomhole formation zone, with all the basic assumptions