Abstract: Kelameili gas field is composed of four gas reservoirs such as Dixi-17, Dixi-14, Dixi-18 and Dixi-10, among which the last three gas reservoirs except Dixi-17 have been put into production currently. The preliminary development indicates that there exist distinct differences not only in development effectiveness of different blocks, but also in well productivity among different wells in the same block.. This paper analyzes the factors affecting the well productivity based on geology of the gas reservoir, which include the geologic factor and the engineering factor. It is concluded that the igneous rock scale, storage space type, lithofacies and lithology are the main factors affecting the productivity of gas wells.

Key words: Kelameili gas field, Carboniferous, igneous rock, gas reservoir, gas pool