Notice of RetractionThe method of inventory verification in flooded and depleted sandstone gas reservoir underground gas storage facility

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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Inventory verification is a process which tracks down inventory, storage capacity, working gas capacity, cushion gas and cushion gas loss in multi-cycle operation of underground gas storage facility (UGSF). This process is a key step to study the UGSF operation rule, analyze the gas loss, improve the operating efficiency and reduce the operating cost. Inventory verification model was successfully applied to a UGSF based on static inventory, and obtained much higher fitting results than injection/withdrawal rate. Dynamic inventory as initially presented by means of analyzing the gas-drive and water-drain mechanism, investigating micro/macro water-gas law of motion and possible distribution. Inventory verification model was established upon evaluation criterion that the relation of injection/withdrawal rate vs. pseudo formation pressure accorded with he material balance equation for dry-gas reservoirs without water influx. The application results showed the outcome of calculation coincided with the factual rate and the model could be applied to calculate and analyze the inventory in the flooded and depleted-gas-reservoir gas storage. This study presented a scientific groundwork to the conduction, management and adjustment of UGSF.