Tight gas production model considering TPG as a function of pore pressure, permeability and water saturation

• DOI: 10.1007/s12182-020-00430-4
• Publication Date: 2020-03-05T07:02:26Z
• Authors: Atif Zafar; Yu-Liang Su; Lei Li; Jin-Gang Fu; Asif Mehmood; Wei-Ping Ouyang; Mian Zhang
• Keywords: Pressure gradient; Tight gas; Saturation (graph theory); Inflow

Abstract Threshold pressure gradient has great importance in efficient tight gas field development as well for research and laboratory experiments. This experimental study is carried out to investigate the threshold detail. Experiments are with without back so that effect of pore on may be observed. The trend increasing or decreasing totally opposite cases considering not pressure. results demonstrate reservoirs influence gradient. effects other parameters like permeability water saturation, presence pressure, also examined which show increases either a decrease an increase saturation. Two new correlations basis permeability, introduced. Based these equations, models production proposed. slip correction factor considered during derivation this proposed models. Inflow performance relationship curves based rates absolute open flow potential always overestimated while ignoring gradients.