Caving
18 July 2017Cement case
18 July 2017Caving
18 July 2017Cement case
18 July 2017A pit in the ground, usually lined with concrete or steel pipe, that provides additional height between the rig floor and the wellhead to accommodate the installation of blowout preventers, rathole, mousehole, and so forth. It also collects drainage water and other fluids for subsequent disposal.
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