Analytical Developments in the Dew Point Model for Predicting Annulus Gas System Response

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J.M. Kenchington

Abstract

An analytical method of predicting dew point response for an Annulus Sas System during a pressure tube D2O leak has been developed to augment the present computer model for Bruce NGS A. Good agreement was obtained with the computer solution for a typical Bruce NGs A scenario.


The main advantages of the analytical method are its versatility and flexibility in modelling variations to the main scenario such as gas leaks from the channels and isolation of pressure tubes. The analytical method can be programmed on a hand held calculator to streamline the computational work. The dew point responses for these scenarios are presented for Pickering NGS A together with the practical implications for operators.

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