Optimization Of Drainage Gas Recovery Technology

As the development of exploring ability and technology of natural gas, it becomes the urgent problem in the production of gas well with water that how to select the optimum drainage gas recovery technology to gain the greatest economic benefits according to gas well actual conditions.Based on characteristics and compatibility study of the mostly used drainage gas recovery technologies, including bubble unload, gas lift, preferred pipe string, motor pumping electric pump, jet pumping, this paper defined the economic indicator system with the cost, payback period and the shortest working cycle as its main indicators, and the technology indicator system with gas production, water production, lifting efficiency as its main indicators;According to the fuzzy evaluation theory, the drainage gas recovery technology optimizing model based on the fuzzy uniform matrix was proposed to carry out the technical and economical evaluation of each candidate technique, which provides decision principle for the optimization;Based on the theory study, the drainage gas recovery technology optimization and design software was compiled, according to which the field data were also calculated and analyzed,The analysis indicates that the application of proper drainage gas recovery technology and ascertainment of rational operating mod must be made according to the special indication of different wells to obtain more obvious effects and economic profits. Before the operation of the drainage gas recovery, the technical and economic indicators must be take in consideration comprehensively to select the gas well with water. Same time, the collection, arrangement and accumulation of related data to provide exact and powerful guarantee for the optimization of developing methods.