While drilling in the Northern Monagas Basin, high pressures are encountered in
the Naricual Formation. In an effort to control these pressures, the Naricual
Formation is typically drilled in multiple intervals, including the 8½-in. and 6½-in. sections. Typically, the pressure differential requires a complex drilling fluid and well design.
Impact’s FLC 2000®, an ultra-low invasion fluid additive for Wellbore Shielding®
and stabilization, was used to drill multiple intervals in the formation in a 14-well drilling program. Electrical logging confirmed high differential pressures, including more than 7,000 psi in the MUC-166 well (see chart).
In multiple wells, the Naricual Formation was drilled in one section (8½-in.),
eliminating the 6½-in. section originally planned. FLC 2000 performed at high
differential pressure, eliminating the need to drill the additional internal, saving
the operator on drilling costs—by eliminating the casing string—and reducing
drilling time. Testing by the operator also demonstrated a 93% reduction in