Pressurized Production Optimization and Engineering Practice of Samandepe Gas Field

Currently, Samandepe Gas Field on the right bank of Amu Darya River in Turkmenistan is in the middle-late period of development, and the oil pressure of some gas wells is close to the pipe network pressure, with an annual decline rate of 39% in production. In order to ensure the stable production of the gas field and improve recovery ratio, this paper has studied pressurization optimization. In view of such problems as unbalanced distribution of gas field pressure, unknown amount of resource loss, large pressurization range, large investment and difficulty in making optimization decisions, this paper analyzes the geological characteristics and dynamic production characteristics of the gas field, as well as the gathering & transmission pipe networks. Based on this, four key technologies, namely quantitative dynamic description technology for cross-border gas field, adjustment mode of pressurized production system, optimization method of pressurized production scheme and wide-area pressurized production support technology for high-sulfur gas field are available to guide the construction of booster station works. Conclusions are: ① Compared with a conventional gas field, the recovery ratio of Samandepe Gas Field after pressurized production is greatly improved, with an expected increase rate of 32%. ② Commercial gas production increases by 12.898 billion m3 after pressurization in 2017–2022 ③ pressurized production optimization technology and engineering practice experience of Samandepe Gas Field can be applied to other gas fields on the right bank of Amu Darya River.