Gas Injection Capacity of Slotted Liner and Perforation Completion in Underground Natural Gas Storage Reservoirs

The use of Horizontal wells is a common method underground natural gas storage (UGS), but there still need to discuss whether they are more suitable for slotted liner or perforation completions. To address this issue, numerical model developed predict the injection rate horizontal while considering skin factor. Here, novel uncoupled iteration employed determine factor deriving from turbulence in each time step when bottom hole pressure fixed. begins with an estimate initial rate, which then used calculate turbulent This update iterating continuously until convergence achieved. effects and design parameters, formation damage, on analyzed. main findings suggest that error calculated by non-coupled compared coupled only 0.6%, yet it can reduce number sub-iterations 1/10 required model. Moreover, provide results within four steps, even condition 10−14. open area density play significant role determining connection degree between well reservoir, larger resulting negative Perforations than liners reservoirs severe difference two reach value 40.87 ratio damage zone’s permeability normal reservoir zone 0.05. It easier completions completions, being 15.9% perforation. However, avoid crucial prevent screen tube plugged in, as might otherwise rise three ten times original level. study provides theoretical basis practical reference application UGS wells.