Abstract: A series of problems occurred in major Chuanxi (west Sichuan)gas fields due to unreasonable production allocation that resulted in higher cost, short stable-production cycle and rapid production decline. This paper presents a set of new methods for clustered partition and integrated optimization of production allocation for these gas fields. On the basis of these methods or mathematical models, the optimum planning schemes are obtained, which provide quantitative basis of macro-control of all these gas fields for the decisionmaker (s). Comparing with existing development schemes, the studied results in this paper show that the unit cost for gas production can be obviously decreased. Integrated

Key words: gas field, development programming, optimization, decision-making, genetic algorithm