SIMPLIFIED CRITERIA FOR DAILY INSPECTION OF WATER-SEALING FUNCTION STABILITY OF UNDERGROUND OIL CAVERN

Abstract

The daily inspection of the stability of water-sealing function is one of the most important items in the operating procedure for underground oil storage. The simplified criteria for the daily on-site judgement are strongly needed for the speedy evaluation and the expedient countermeasures. In this paper, the methods based on the simple statistical model are proposed for the daily judgement and their effectivenesses are verified by using the observed data concerning groundwater. The effective rainfall method is adopted to evaluate the data fluctuation due to seasonal precipitation. And, the method based on the cross-correlation structure of multiple groundwater table measurements is also discussed.