Abstract: This paper first introduces the basic features, recovery history and existing problems of Weiyan Sinian gas reservoir, and then discusses the causes of these problens and the possible solutions to them. Finally an outline of Overall harnessing technologies of enhancing recovery for the gas field is worked out. This paper concludes that through overall harnessing, it is possible for the gas reservoir to have a stable production in a long term.

Key words: Oil and gas fields, Overall benefit, Overall harnessing