Jing 58 Underground Gas Storage Group Reconstructed from a Sandstone Oil Reservoir with a Gas Cap

Abstract

The Jing 58 Underground Gas Storage Group is composed of three different types of underground gas storages, including Jing 58, Yong 22, and Jing 51. The Jing 58 Underground Gas Storage was the first underground gas storage to be reconstructed from a sandstone oil reservoir with a gas cap in China. The Yong 22 Underground Gas Storage was reconstructed from a condensate gas reservoir, and the Jing 51 Underground Gas Storage was reconstructed from a depleted constant-volume gas reservoir. Their construction designs and engineering were performed by applying their comprehensive geological evaluations, the storage capacity parameter design optimization for reservoirs with complex fluids, and the drilling and completion techniques used for complex fault blocks containing different types of underground gas storage. They were all put into production in 2020 and have been playing an important role in guaranteeing winter peak shaving and gas supply in the Beijing, Tianjin, and Hebei areas. The Jing 58 Underground Gas Storage Group is located about 70 km south of Beijing, in Langfang City, Yongqing County, Hebei Province. As the support facility of the Shaanxi-Beijing Gas Pipeline System, it is connected to the first, second, and third Shaanxi-Beijing Gas Pipelines via the Yongqing Offtake Station, and it mainly accommodates winter peak shaving and emergency gas supply for the downstream users of the Shaanxi-Beijing Gas Pipeline system.