It contains averages of rigs running in Louisiana divided into regions: north, south inland land, south inland water, state offshore and OCS. The main source of this data is Baker-Hughes drilling statistic.
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[pdf] Drilled shafts are high-capacity deep foundation systems, also known as drilled piers, caissons, bored piles, or cast-in-drilled-hole piles (CIDH). Drilled shafts for structural support can be installed by the dry (open hole), stabilizing polymer slurry, or steel-cased methods.
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