WITSML casing cement summary Component Schema The type of cement used within a well bore. Valid values include: A, B, C, D, E, F, G, H, Other. Decscription of the cement mixture placed in the well. The top measured depth of the cement volume. The bottom measured depth of the cement volume. The top true measured depth of the cement volume. The true measured measured depth of the cement volume. The volume of cement placed in the well. Valid values include: Casing Shoe, Cement Port, Diverter. The calculated distance above bottom depth. The method used to calculate the distance above bottom depth. The item state for the item.