Development of Improved Technologies and Techniques for Reducing Base Gas Requirements in Underground Natural Gas Storage Facilities: Mathematical Model. Final Report December 1987-December 1988

摘要

Base gas requirements in the U.S. amount to a few trillion cubic feet. The Gas Research Institute has proposed a gas storage operating plan whereby an inert gas or a low BTU gas could be injected to replace part of the hydrocarbon gas. A reservoir simulator has been developed to solve gas-water reservoir problems where the gas may be treated as a two-component miscible mixture. The previously developed reservoir simulator was tested on a variety of cases. They covered software performance and interpretive questions regarding the performance of gas storage reservoirs with inert gas injection. The cross section and areal field-wide cases studied gave significant insights into optimum gas storage operations. The calculation efficiency of the previous model was improved by the development of an advanced dispersion calculation, called the Generalized Koval method, which was incorporated into the model Omega. The model was documented in a User's Manual.