Water production is one of the key problems encountered in development of gas reservoirs. Water produced from carbonate gas reservoirs can be divided into condensate water and formation water

and the latter can severely influence normal recovery of gas. There are three modes of water production including water production from gas producing intervals

vertical water breakthrough and rising gas-water contact. Although the carbonate gas reservoir has a unitized pressure system

pores are generally characterized by their heterogeneity with three secondary porosity zones

due to the modification made by tectonic movement and diagenesis. As a result

gas-water contact varies greatly between wellblocks

and there will even be a wide unsteady gas-water transition zone

thus formation water production can easily occur during dynamic development.