Abstract: Penglaizhen Formation Gas Reservoirs of Baimamiao field belongs to the lithological gas reservoirs in the structural background, and also tight sandstone gas reservoir. Its main pore type is solution pores. The gas reservoirs has conventional pore reservoir and the non-conventional fracture pore reservoir, in the whole, the reservoirs have the following characteristics:small radius of pore, small throat, small coordination number,little macroscopic fracture, more micro-fracture, complex pore structure, poor connective ability. Firstly, the reservoir characteristics is studied, the reasons of the difference of the gaswell production is analyzed, then proposed the suggestion that enhances the gaswellproduction in this article. The following conclusions are drawn as follows: There are many small scale sandstone bodies in the gas reservoirs and the sandstone bodies
have themutual superposition; the single layerproduction is low but themulti-layer can accumulate high production. Therefore,on the basis of intensive geologicalevaluation, using themethods such as openingmulti-layer, the selective zone fracturing, the selective zone test and the multi-layer production can enhance gaswell production.

Key words: Baimamiao, reservoir, low production, low permeability, fracturing