WOM Subsea is specialized in providing custom-engineered subea solutions to WOM clients around the globe
WOM Subsea has recently expanded its operations to a 10,000 sq ft highbay which allows for up to 3 Subsea Intervention Systems to be worked on Simultaneously
WOM Subsea's operations are closely integrated with the established infrastructure which WOM has built over yhe past 40 years
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6 3/8-15K Surface Tree (Flow head)

Worldwide Oilfield Machine (WOM) has developed a 6-3/8” – 15K Surface tree (Flowhead). The surface Flowhead assembly is an integral part of the Intervention riser string assembly. This unit allows the access to the well bore thru the riser with a variety of wireline and coil tubing tools. The Flowhead is designed to accommodate coil tubing lift frames and is suspended via 10-3/4” standard casing elevators.

Features

  • Compact valve block design for reduced weight and package height.
  • Includes two 6-3/8-15K field proven valve.
  • Includes two 4-1/16-15K field proven valves.
  • Includes a 6-3/8” 10k dynamic swivel assembly per NACE MR-01-75.
  • Mechanical Over-ride for valve actuators.

Industry Standards

NAME DESCRIPTION REV
API 6A / ISO 10423Specification for Wellhead and Christmas Tree Equipment (Latest Edition)20th Edition October 2010
API 17D /ISO 13628-4Specification for Subsea Wellhead & Christmas Tree Equipment (Latest Edition)2nd  Edition May 2011
API 17G /ISO 13628-7Petroleum and natural gas industries- Design and operation of Subsea production systems-part 7: Completion / work over riser system2nd  Edition July 2006
SAE AS4059Aerospace Fluid Power – Cleanliness Classification for Hydraulic Fluid (Latest Edition)AS4059F September 2013
NACE MR0175 /ISO 15156Petroleum and natural gas industries- Materials for use in H2S-containing environments in oil and gas production2nd  Edition July 2006
DNVGL-OS-E101Offshore standards, Drilling facilitiesJanuary 2018

Operating Specification

Pressure / Loading Criteria Specification
Maximum working pressure 15,000 Psi
Maximum Test pressure 22,500 Psi                
Load Rating @250°F 1,500,000 lbs @0 psi
Load Rating @250°F 750, 000 lbs @10,000 psi
Temperature / Design Criteria Specification
Temperature Rating P+U
Min. Design Temperature -20° F
Max. Design Temperature 250° F
Nominal bore size  Ø6 3/8”
Drift Dia Ø 6.34 +.027/-.000
Material Class EE-NL
PSL Level PSL-3G
PR Level 2
Well Barrier type 2 x 6 3/8” Hydraulic gate valve 2 x 4 1/16” Spring-assist fail-safe-closed gate valves
Proven Cut Capability: None (Can be incorporated if required for Slickline / Braided line / Electric line in SWAB valve on new equipment)
Operating Criteria Specification
Water depth 10,000 FT
Service Condition H2S per NACE MR 01-75
API Monogram No
Test cap (Top of FH) 10.750-2 ACME-2G Pin
Test cap (Bottom of FH) 10.750-2 ACME-2G RH Pin

Valves and Actuators

S No.ValvesNominal SizeQty
1Swab valve6-3/8”1
2Lower Master Valve6-3/8”1
3Fail Safe wing valve4-1/8”2

Swab Valve

Nominal Size Ø 6 3/8”
Maximum working pressure 15,000 Psi
Maximum Test pressure 22,500 Psi                
Control Pressure 3,000 psi
Max. Control Test Pressure 4,500 psi
Actuator Type Double Acting Hydraulic (Fail As Is)
Position Indicator Yes
Over-ride Yes (Separate Assy supplied with FH assembly)

Lower Master Valve

Nominal Size Ø 6 3/8”
Maximum working pressure 15,000 Psi
Maximum Test pressure 22,500 Psi                
Control Pressure 3,000 psi
Max. Control Test Pressure 4,500 psi
Actuator Type Double Acting (Fail As Is)
Position Indicator Yes
Over-ride Yes (Separate Assy supplied with FH assembly)

Choke / Kill Valve

Nominal Size Ø 4 1/16
Maximum working pressure 15,000 Psi
Maximum Test pressure 22,500 Psi                
Control Pressure 3,000 psi
Max. Control Test Pressure 4,500 psi
Actuator Type Fail Safe Close
Position Indicator Yes

Interfaces

Flow Line 3-1/16”-10K Flange (No X-Overs included)
Kill Line 3-1/16”-10K Flange (No X-Overs included)
Top 10-3/4’’ – 2 ACME-2G BOX (Handling Sub) supplied with 7-1/16-10K API Test flange
Bottom 10-3/4’’ – 2 ACME-2G BOX (Saver Sub)
Sensor Interface No

Cross-Overs

Position Top connection Bottom Connection
Connection between Saver-sub and Riser 10-3/4”-2 ACME-2G-RH (PIN) 10-3/4”-2 ACME-2G-RH (PIN)

Hydraulic Data

Control Fluid Type HW443 (or) Water based Glycol
Control Fluid Cleanliness SAE AS4059 CLASS 6B-6F

Enquire about 6 3/8-15K Surface Tree (Flow head):

  • This field is for validation purposes and should be left unchanged.
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