Analysis of Surface Subsidence of the Strategic Petroleum Reserve Crude Oil Storage Sites from December 1982 to January 1988.

摘要

Surface elevation surveys have been made at Strategic Petroleum Reserve oil storage sites at approximate one-year intervals beginning in 1982. The surveys have indicated significant surface subsidence rates at all sites, with maximum values varying from about /-/0.06 ft/yr at the Bryan Mound site to /-/0.03 ft/yr at the West Hackberry site. Thirty-year projections of the indicated subsidence rates suggest that surface subsidence could lead to surface flooding problems at the West Hackberry site and to a lesser degree at the Bayou Choctaw site. No such flooding problems are foreseen for the other three sites. However, subsidence rates at the Weeks Island site up to -0.19 ft/yr are large enough to cause concern regarding possible salt fractures in the vicinity of shafts, which could in turn lead to water incursion into the mine. 9 refs., 5 figs., 2 tabs. (ERA citation 13:046313)