Cased Kelly Drilling

Cased kelly drilling na one specialized deep foundation drilling method wey dem dey use for large diameter boreholes where stability and precision dey critical for project success. Dis technique dey use kelly bar - one rigid drilling tool wey dey transmit rotational and percussive forces - combine with external steel casing to maintain borehole integrity through unstable or highly fractured soil and rock formations. De casing serve as structural support system wey prevent borehole collapse, control groundwater influx, and allow drilling to continue through challenging geotechnical conditions. Kelly bar dey work in conjunction with de casing to create controlled excavation process, making dis method particularly effective for investigate complex subsurface geology and establish foundations for difficult ground conditions.