Transient Analysis To Locate and Characterize Plugs in Gas Wells

摘要: We propose to use pressure transient analysis indicate the location of a flow restriction in gas well and characterize such blockage. have developed simulator for with single partial blockage at any flowline. The early-time wellhead drop is influenced by volume reduction due plug its while late-time steady drops give an indication severity plug. Thus, late response data can be used detection. Our study found that thickness, length, location, roughness strongly influence response. Of these factors, extent channel diameter (due thickness) has most effect. In addition, we rate which test run pronounced effect on both early time transients. also noted reservoir density velocity, turn, some wellbore storage frictional drop. showed deviation did not appreciable Geothermal gradient was observed negligible scenarios, characteristics off-shore production are similar those on-shore wells. presented this report suitable wells as well.