Topic: Subsea production and facility

Question

1) What is the operating working depths? _5000____ft of water2) Flexible flowlines and risers?_ Flow lines______3) Type of well? eg oil/gas well __gas____ horizontal or vertical?

___deviated_________4) API=_____0.65 SG____GOR=___Dry gas______5) If Oil Production,BOPD = __Condensate = 1000____---___6) If Gas Production, SCF/d=___1 bcf_______7) Fluids Production=__1000____bbls8) Production riser ID__Use typical___in9) Type of Subsea production system: diverless, guideless?__diverless______10) HC and water flow rate___---____11) Size of Reservoir=______2 tcf__________ (Reserves)12) Areal extent=________400 arces__13) Is there any host platform to handle processing capacity?___Yes_______14) Type of offshore structure____Jacket_____ eg Jacket, Floating Production

System, FPSO SPAR, TLP, buoys etc15) Distance of tie backs ___6 miles_16) No of wells (on production), __8_____ 17) Any injection wells for pressure maintence?____No___18) Type of flowlines____Flex__ Eg welded steel type or Flexible Piping19) Shut in pressures and temperature? ____150____degF,_3000______psi20) Natural or Artificial Lift?__Natural____21) Any Downhole Oil/Water Separation and Reinjection systems (DOWS)?

____NO_____22) Is Subsea separation eg water, sand separation economical, use of subsea

gravity separators electrostatic coalescers, VASPs? No23) Field distance from shore_______miles24) Number of gas fields________25)26) Reservoir depth_________ft27) Predominant Lithology (eg unconsolidated ss, carbonate etc)

Bp.comProduction System Configuration

Riser and Flowline Type

Manifold and Cluster Size

BOPD

Fluids production(BFPD)

Gas Production

Base System Configuration

Design Development Overall system arrangement and field layout Production riser count Control system configuration Service specification for flexible pipe

Overall system arrangement and field layoutThe overall system arrangement and field layout is required to satisfy a large number of diverse drivers include:

Preferred well penetration to reservoir Preferred well path and wellhead location Clustering of wellheads Flow assurance limits on flowline elevation change Avoidance of seafloor obstruction (gas expulsion areas) Alternative riser systems Minimizing dropped object risk Variation in well count Future tie-ins and gas export

Subsea systems that have been proposed to date include:1. Satellite Well production system2. Semisubmersible production system3. One atmospheric chamber production system4. Subsea atmospheric system (SAS)5. Exxon’s subsea production system (SPS)