X gas field is located in the central inversion structural belt of Xihu Sag. East China Sea Basin. The main target layer H4 is in shallow water delta sedimentary environment. The dominant frequency of seismic data of the gas field is low (25 Hz). https://www.bekindtopets.com/top-super-Harry-Potter-Hufflepuff-Big-Bang-Lite-Headband-quick-super/