Abstract: A satellite tree module (STM) (10) for controlling flow between a satellite flow and a subsea production system includes at the bottom of the STM a connector (12) of an internal-latch, hydraulically operated type. A lower structure (14) consists of a central ring and projecting arms terminating in guide funnels. An upper structure (18) supports a reentry pole (20) integrated to the STM assembly (10) via an orientation key, a reentry mandrel (22) and a cap (24) for protection of the external profile of the reentry mandrel (22) and its receptacles. A flow system is arranged above the lower structure (14) and inside the upper structure (18). The flow system consists of a set of pipes and valves through which production/injection, production testing and lift-gas fluids flow. A flow line terminal (26) and a control system responsible for the activation of the STM (10) components during the operational phase are amounted to one of the upper and lower structures.

Abstract: This invention refers to a wet Christmas tree (20) utilized particularly in subsea production systems, including at the bottom a connector (22) for purposes of locking to the wellhead, a guide structure (24) consisting of a central ring attached to said connector (22), supporting arms (26) and guide funnels (28), a valve block (30), a reentry mandrel (32), gate-type lateral valves (46, 48, 50, 52) with metal/metal sealing and hydraulic driving with spring-type return flow lines with loops (54, 56, 58) and piping for the crossover line, hydraulically adjustable chokes (60, 62), a flow line terminal (36), a reentry pole (42) and a control system.