An offshore operator planned to drill four wells in the Campos Basin, in an area known for induced losses and differential sticking. Wellbore instability issues in offset wells also included highly depleted sands exposed to 3,000 psi overbalance. Deep invasion caused poor quality reservoir fluid samples in these offset wells.
Impact recommended FLC 2000® wellbore stabilizer to be used in a 10.5 lb/gal synthetic-based fluid system in the 8½-in.reservoir section (4,700-5224 meters).
The operator did not experience any differential sticking and the downhole losses were greatly reduced. The hole diameter measured 8.2-8.4” and 28 reservoir fluid samples were achieved.