HOUSTON -- Baker Hughes Drilling Fluids has successfully finished a client's first zero discharge well in the Scott Reef prospect of the Browse basin. Key issues revolved around the environmentally challenging drilling location and a jackup rig standing over a pristine coral reef formation, the company says. BHDF Fluids Environmental Services (FES) provided a custom built slurrification system for water-based cuttings.
Cuttings were slurrified and pumped to a support boat for transport away from the coral reef to be discharged in deepwater. The critical issue was zero "spillage" to the sea in any shape or form on location. The top hole proved problematic in slurrifying the coral cuttings, but once the reef itself had been drilled, drilling began to TD without problems and slurrification was finished with zero discharge.