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PRESSURE DROP THROUGH PERFORATION CHANNELS
Abstract
The perforation channels are the only conduits between the reservoir in production and the producing well, so it is quite obvious that their parameters seriously affect the productivity. Under this highly volatile oil price environment aiming for the best productivity has the highest priority. For this reason, the need for understanding the effect of the perforation parameters on the inflow is urgent. In the previous years, Pasztor has proposed a new concept to calculate the pressure drop caused by the perforation geometry with promising results. However, to this day it was assumed that the pressure drop through the channels is negligible. In this paper a new method is presented, that can be used to eliminate all the uncertainties about the pressure drop through the perforation channels. This method makes it possible to get a better picture on the effect of perforation geometry on the productivity of producing wells, moreover it helps us to plan the best geometry. As an additional result, by understanding how the filtration goes in the vicinity of the well, it becomes easier to choose between reperforation or acidizing in case of a well with unsatisfactory productivity.
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References9
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