AP-10: SEISMIC MONITORING FOR OPTIMISING THE OPERATION OF UNDERGROUND GAS STORAGE FACILITIES

摘要

In 1993, Gaz de France seized the opportunity of the gas storage facilities of C閐? la-Ronde to carry out arnmonitoring program so as to optimize the new site抯 development.rnThe innovative monitoring methods based on seismic methods such as the use of permanent seismic sensorsrnplaced between the tubing and the casing of operational wells to carry out mini seismic profils around thernwell so as to follow the evolution of saturation in the well抯 vicinity and highlight preferential fillingrninstructions. The seismic monitoring method based on four surface profils allowed accurate establishing ofrnthe gas bubble抯 boundaries in six directions and after measurement setting at the well the establishing ofrnsaturation contours and of the gas? height. The results obtained will allow fine-tuning the reservoirrnsimulation model and thus improve the predictions.rnThe main interest in applying these methods to underground storage facilities of natural gas is, on the onernhand, to be able to accurately control the progression of the gas bubble towards the spill point in severalrndirections to optimize the reservoir抯 filling, and on the other hand, to locate the areas containing largernaccumulations of gas in order to establish the best production wells.