Tech Report On-Rig Treatment of Cuttings for Discharge Recovers USD 340,000 Fluid for Reuse
2,968 tonUK of oil-based cuttings treated on the rig and discharged at <0.1% TPH
Cuttings collection and transportation system
In deeper-water environments, offshore operators encounter not only hostile drilling conditions and complex logistics but also increasingly stringent environmental regulations that often call for zero, or near-zero, discharge of drill solids. As a result, they have had to rethink the way in which cuttings laden with oil- and synthetic-based drilling fluids are handled.
CLEANCUT cuttings collection and transportation system provides a complete field-proven method for containing, handling, temporarily storing, and transporting both water- and oil-based drill cuttings. All operations are conducted within a totally enclosed and protected environment. A CLEANCUT system can be configured to conform to available rig space.
The flexible configuration of the CLEANCUT system means that it can be engineered to fit rig layouts with small footprints, thereby increasing space for other equipment. Further, it can handle cuttings generated at high ROP, reducing and even eliminating NPT caused by overloaded processing equipment. The totally enclosed system design prevents exposure of personnel and the environment to drilling wastes, even in extreme Arctic and tropical conditions. It also minimizes the use of crane lifts, thereby significantly reducing employee exposure to overhead hazards.
Through dense-phase conveying technology, drill cuttings are collected from rig shakers in the CCB CLEANCUT system cuttings blower. Periodically, they are then pneumatically batch transferred to an ISO-Pump cuttings collection and conveying unit that serves as both a storage and conveyance vessel for cuttings. Once cuttings enter the CCB blower, the process is completely enclosed, and fluids-laden cuttings are safely and fully contained. ISO-Pump units provide buffering storage capacity for skip loading, cuttings reinjection, thermal desorption, drilling operations with controlled process rates, equipment downtimes, and logistics issues related to cuttings disposal.