Subsea machine and methods for separating components of a material stream

摘要

Systems and methods include using a subsea machine for separating a mixture received from a seabed well. The subsea machine includes: a chamber (502) configured to receive and separate by gravity the mixture received from the seabed well. The chamber (502) includes: a housing (526) configured to contain the mixture received from the undersea well during separation, and a piston (512) provided inside the housing (526) and separating the housing into a top section and a bottom section. The piston (512) is configured to move in a first direction along an axis to create more space in the top section for receiving the mixture from the seabed well and to move in a second opposite direction along the axis for removing the mixture from the chamber after separation has occurred.