Feasibility Study Of Underground Gas Storage Reconstruction Of Depleted Sandstone Gas Reservoir

Underground gas storage is a city gas seasonal peak shaving and ensure the main means of gas accident safety. Due to the demand for natural gas was obviously affected by seasonal factors, the winter peak gas consumption is far greater than the summer doldrums when consumption, hence the need for gas storage peaking. With the rapid growth of demand for the rapid construction of natural gas pipeline and natural gas, the existing underground gas storage has been far from being able to meet the rapid development of China’s natural gas pipe network and natural gas market, it is necessary for the new library location and construction.In this paper, Shuang 6 block in Liaohe Oilfield sandstone exhausted gas reservoir as the research object, the geological conditions of the sandstone gas reservoir exhausted from the stratum, structure, sedimentary, reservoir, interlayer, caprock sealing, trap efficiency, oil-water distribution, reservoir type, fluid temperature and pressure, carried out a detailed evaluation of the reserves. The characteristics of oil and gas reservoir development, especially the effect of water on oil and gas development effect is studied, which carried out the reservoir numerical simulation of oil and gas, by exploiting the dynamic history match of water invasion, remaining oil distribution and use status of the research status, and on this basis, the single well as underground gas storage the gas production capacity, operation pressure, operation mode and operation cycle, 4 types of reservoir parameters were studied in detail.The detailed research work, and obtained the following: shuang 6 block sandstone exhausted gas reservoir with reconstruction of the geological conditions of the underground gas storage; due to weak water energy, and the use of natural gas in the top of the flooding, there is no water, water invasion reservoir within a limited range, small influence of gas cap edge and bottom water, crude oil, with the reconstruction of the geological conditions of the underground gas storage volume, fluid, temperature and pressure, capacity conditions initially confirmed that the technology index of gas storage and preliminary design.