Well Leakage Treatment on 244.5mm Case of Well Lishen 1 before Cementing

Abstract:

Because of high density of cementing slurry, borehole leakage often occurs while casing cementing operated in the area with low formation bearing pressure. Pressure sealing before well cementing is important to guarantee cementing quality and drilling design. Cementing of Well Lishen 1 was successfully operated by the analysis on the leakage zone and rational leakage stopping.