气田开发后期管网改造方案研究

Pipeline Network Reform of Gas Field Production in the Later Stage

川南气田经３０多年的开发已全面进入气田开发后期的低压开发阶段，气田地层能量衰竭使地面集输系统不相适应，影响到气田的进一步开发。本文根据川南气田的开发现状，综合考虑地面集输系统采、输、配各个环节，提出天然气地面集输系统干线降压方案，从而协调天然气采、输、配的关系。

It is more than 30 years since South Sichuan gas field began to be exploited. Now it has gone into low pressure production preiod. The stratum energy exhausion has made the surface gathering system unsuitable for the production, and has affected the further exploitation of the gap field. In consideration of the present situation of the gas field, this paper comprehensively analyzes the gathering, transportation and destribution functions of the surface gathering system, and puts forward the scheme that aims to decrease the main line pressure of the natural gas surface gathering system, thus coordinating the relationships of gathering,transportation and distribution.