Study on production distribution laws of single layers in commingling condensate pool

At present, because of the condensate oil effect on production of condensate gas well during the development, commingling production is used to improve the development efficiency of commingling reservoirs or wells with multilayer mainly, especially to the dry gas pool. The laboratory physical simulation method for condensate gas reservoir commingled production in proportion of layer reserves under formation without water condition is established, and production distribution law of layers under fixing output quotas depletion is analyzed. Then, the distribution law has also been studied by numerical simulation and theoretical well testing. The study results of 3 ways-theoretical well testing, indoor physical simulation and numerical simulation- show that the production of conventional gas wells or gas reservoirs with sealed boundaries should be distributed according to the formation coefficient at the first stage of commingling production; when pressure waves has reached the boundaries, after a period of production transition, it gradually changes to be distributed according to the formation reserve proportion. The study results provide a new theoretical basis for the production distribution of gas reservoirs with medium-high permeability at the middle and later development period.