Study on Gas Recovery Program Optimization in Deep Water Gas Reservoir

Abstract

LS-17 gas field is China’s first self-operated deep-water gas field in the south China sea. Located in the southeast of hainan island, the gas field has a depth of 1220-1560 meters. According to the gas reservoir characteristics of ls-17 gas field, the gas reservoir model and numerical model of water control process of ls-17 gas field are established, the productivity of existing wellhead gas reservoir is predicted, the gas production plan of gas reservoir is optimized, and the optimal solution of recovery rate of compressed gas reservoir is given under different system changes, different processes and different development modes. In this paper, the gas production rate and recovery rate at different gas production rates are predicted, and the gas recovery rate is optimized. The development method of intermittent gas production is put forward, and the parameters of intermittent gas production are not optimized. The deep water gas reservoir is characterized by high energy and serious water intrusion. This paper compares and evaluates the recovery efficiency under different water control technologies, and proposes a method for selecting water control technology measures in the process of gas reservoir development. The research ideas and methods in this paper effectively support the scientific decision-making of gas recovery program in LS-17 gas field and have certain guiding significance for the development of deepwater gas reservoirs in the south China sea.