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Wellhead Control Panels
23/04/2016

Project Requirements

 
Application
 
Operation of:
-Three BOP’s (Blow Out Preventer) at 3.000 PSI
-One time DHSV (Down Hole Safety Valve) at 10.000 PSI
- One MV (Master Valve) at 10.000 PSI
Safety Requirements
 
-Hydraulic Accumulator for emergency operation
-Visual and acoustic safety signal
-Air operated remote control unit (ESD-Panel)
 
Specific Requirements
-Frame Work Design Geman Loyd certified according DNV NO.2.7-1
-Hose Reels for each function
-Special 3-Layer, 200 Micron Dry Film thickness Offshore Paint Coding System
-Logical Panel Design
                                
Framework Calculation
- Pad eye strength calculation according DNV 2.7-1
- Filled weld calculation
- FEA (Finite Elemente Analysis) 

Framework Test
-2-Point and 4-Point Load Test
-Drop Test
-Ultra Sonic Welding Test
-Ultra Sonic Z-performance Test

Framework Certificates
-3.1 Material Certification for main frame components
-3.2 Material Certification for Pad Eye and Pad Eye Base Plate consisting of: Chemical Analysis (AES), Impact Test according EN 10045, Tensile Test according DIN EN 10002-1
-Inspection Report German Lloyd according: EN12079-1:2006 – Lifting Test 8.4.1, EN 970, EN 1290, EN 1291

1.Subsurface Safety Valve (SSSV.SCSSV)
 
Applications
 
A subsurfcae safety valve is essentially a shutdown valve used at the upper wellbore for emergency shutdown to safeguard the production tubings and wellhead in case of fire, overpressure or other abnormal situations. Purpose of a subsurface safety valve (SSSV) isto avoid the ultimate disaster which can result in release of reservoir fluids to the surroundings.
 
Technical Data
 
·Normal Size: 1.87”,2.31”,2.81”,3.81”
·Working Pressure: Normal pressure: 5,000~6,000psi
                                 High pressure: 10,000~15,000psi
·Working Temperature: -6.7℃~149℃
·Setting Depth: not less than 30 meters

2.Surface Safety Valve (SSV)
 
Applications
 
SSV (hydraulic/pneumatic safety valves) is used for shutdown the well flow upstream of the choke manifold in case of an emergency like fire, leakage.
 
3.well head Wellhead Hydraulic Gate Valve Technical Data: MAIN VALVE
 
·Working Pressure: 2,000~20,000psi
·Nominal size: 1-13/16”~7-1/16” (46mm~180mm)
·Service: Oil, Gas, Mud, Sour Gases
·Working Temperature: -46℃~121℃ (LU)
·Material: AA, BB, CC, DD, EE, FF, HH
·Product Specification Level: PSL1 - 4
·Performance Specification: PR1 , PR2
3.Working pressure:2000PSI~20000PSI
·Nominal diameter:1-13/16”~9”(46mm~230mm)
·Temperature rating:-60℃~121℃(KU Grade)
·Material class:AA、BB、CC、DD、EE、FF、HH
·Product specification level:PSL1~4
·Performance requirment:PR1~2
·Working medium:Petroleum, natural gas, slurry, including H2S, CO2 gas
 
 
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