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Shell Parque das Conchas (BC-10)

Shell BC-10

Brazil, Espirito Santo State, Campos Basin, Block BC-10

Landmark: The Shell Parque das Conchas is the first subsea system with gas/liquid separation and boosting. 

The Shell BC-10 block is located approximately 75 miles (120 km) southeast of the coastal city of Vitoria, in the state of Espirito Santo in water depths ranging from 4,920 to 6,562 ft (1,500 to 2,000 meters). This development project was the first full field development based on subsea oil and gas separation and subsea pumping in Brazil. The subsea systems for Parque das Conchas were engineered and
manufactured at FMC Technologies’ facility in Rio de Janeiro and will utilize FMC Technologies' globally managed product standards, supporting supply networks and project management processes.

The first phase of the project included the development of three fields tied back to the FPSO, via subsea wells and manifolds. The fields came on-stream in July 2009. Read about bringing Brazil online.

Phase I

  • Ten (10) Enhanced Vertical Deepwater Trees (EVDT) with FMC subsea control modules
  • Two Production Manifolds
  • Two Artificial Lift Manifolds
  • Six Separation Boosting Modules (ESP)
  • Fifteen Pipeline End Terminations (PLETs)
  • Twenty-six rigid jumpers
  • Eighteen subsea control modules and ALM
  • Seven Umbilical Termination Assemblies (UTA)
  • Thirty-six steel hydraulic Flying Leads
  • Forty-two Electric Flying Leads
  • Eight Multiphase Flowmeters (MPFM)
  • Topside Control Systems (HPU and MCS)
  • Workover riser
  • Intervention and Workover Control System (IWOCS)
  • Installation tools and offshore services
BC-10 Artificial Lift Manifolds (ALMs)
  • C/A-West ALM1: Serves max. 10 Trees with gas separation
  • Provides four ALM slots and two Choke Module slots
  • Connection arrangement:
    –3 production inlets from Production Manifold (PM1)
    –2 production inlets for trees at A-West
    –1 boosted oil outlet to host
    –1 gas outlet to host
    –1 service line/A-West oil outlet
     
  • B-West ALM2: Serves max. three trees without gas separation
  • Provides two ALM slots and one Choke Module slot
  • Connection arrangement:
    –3 production inlets for B-West Trees (one spare)
    –1 boosted oil outlet to host
    –1 service line/oil outlet to host

BC-10 Vertical Caisson Separator System

  • Multiphase flow from BC-10 subsea wells enters Top End Assembly (TEA) through Manifold Multibore Interface (MMI)
  • Multiphase flow introduced to Vertical Caisson Separator (VCS) through a purposefully angled and tangential inlet
  • Separation of multiphase inlet flow into liquid and gas components occurs as stream spirals down inside of VCS.
  • Centrifugal and gravitational forces cause heavier elements (solids, liquids) to be thrown outward to VCS wall and downward to Caisson Sump (CS).
  • ESP suspended from ESP Hanger on tubing pumps liquids and associated solids from CS to TEA flowloop, through MMH and downstream through in-field flowline to Production Host Facility (PHF)
  • Gas liberated from multiphase stream rises naturally through annulus created between OD of ESP tubing and ID of VCS into TEA flow-loop, through MMH and downstream through in-field flowline to PHF.
  • ESP string, TEA and VCS may be retrieved sequentially from permanently installed Manifold.