Natural Gas Exploration and Development

Establishment of “one point method” productivity evaluation formula for overpressured gas reservoirs

CAI Junjun, LIU Wei, ZHOU Fangfang, CHEN Chunzhu

Natural Gas Exploration and Development, 2025, 48(2): 58-68. DOI: 10.12055/gaskk.issn.1673-3177.2025.02.006

Fig. 6 Comparison of errors in productivity calculation for gas wells with small drawdown pressure

Other figure/table from this article

Table 1 Burial depth and PVT data of typical overpressured gas fields (reservoirs)
Fig. 1 Relation curves of μZ vs. p and$\frac{p}{\mu Z}$vs. p for typical overpressured gas fields (reservoirs)
Table 2 Multi-point testing data for 44 gas wells
Fig. 2 Pressure-squared binomial relation of Well MX8
Fig. 3 Pressure binomial relation of Well MX8
Table 3 Fitting results of binomial productivity equations in pressure-squared and pressure forms for 44 gas wells
Fig. 4 Fitting relations in pressure form between q_D and p_Dof 44 gas wells
Fig. 5 Fitting relations in pressure-squared form between q_D and p_Dof 44 gas wells
Table 4 Comparison of errors in productivity evaluation