olga ugolga ugm -synergy presentationm -synergy presentation
DESCRIPTION
Slug CatcherTRANSCRIPT
Glagah Kambuna Field is located0 kil ff h h
Project Background
40 kilometres offshore NorthSumatra, currently part of GlagahKambuna TAC (TechnicalAssistance Contract).
Development consist of awellhead platform and anOnshore Processing Facility (OPF)connected by 57km 14” pipelineconnected by 57km 14 pipeline.
Field production capacity is;
• 66 MMscfd gas• 66 MMscfd gas
• 5000bpd condensate
• 1200bpd water
OLGA UGM 2008 Kuala Lumpur
Using for Design
OLGA transient software was used to determine the following;
1. Potential of operational slugging at OPF
2. Slugging during ramp up
3. Verify adequacy of existing slugcatcher design
OLGA was identified as the definitive model, as previously usedsteady state model indicated conflicting results (dependent oncorrelations).
OLGA UGM 2008 Kuala Lumpur
From OLGA runs, no operational slugs expected, although slugging occursin sections (highlighted in blue) of pipeline
Slugtracking
in sections (highlighted in blue) of pipeline.
OLGA UGM 2008 Kuala Lumpur
From OLGA runs, no operational slugs expected.
Slugtracking
← Design flow condition
Minimum flow condition →
OLGA UGM 2008 Kuala Lumpur
Operational Slugging
OLGA t i t ft d t d t i l i t dOLGA transient software was used to determine slug sizes generatedduring ramp up to confirm the adequacy of slugcatcher capacity.
Simulated ramp up time from 20% (min flow) to 100% of design flowwithin the following time intervals;
• 8 hours • 56 hours8 hours• 16 hours• 24 hours• 36 hours
56 hours• 60 hours
OLGA UGM 2008 Kuala Lumpur
Operational SluggingBased on liquid arrival flow and MaximumMaximum DrawoffDrawoff RateRate (DOR)(DOR) ofof 5252..55m³/hrm³/hr (i(i..ee..110110%% ff ii li idli id d tid ti 4747 77 ³/h³/h 72007200b db d)) thth li idli id ll110110%% ofof maximummaximum liquidliquid productionproduction 4747..77m³/hrm³/hr oror 72007200bpdbpd),), thethe liquidliquid surgesurge volumevolumecancan bebe calculatedcalculated..
← 8 hours ramp up
OLGA UGM 2008 Kuala Lumpur
Operational SluggingSurgeSurge volumesvolumes werewere calculatedcalculated forfor thethe variousvarious rampramp upup timetime
OLGA UGM 2008 Kuala Lumpur
Operational SluggingLongerLonger rampramp upup timetime resultedresulted inin smallersmaller slugslug volumesvolumes
OLGA UGM 2008 Kuala Lumpur
Current Slugcatcher DesignOperating Operating ModeMode
GasSlugcatcher in Parallel Configuration
CondensateWaterGGas
Slugcatcher Dimension2.5m (ID) x 20.0m (T/T)
N l C d t O ti V lCondensateWater
Normal Condensate Operating Volume37.5m³ (235.9bbl) per slugcatcher
Normal Water Operating Volume11 ³ (69bbl) l t h
OLGA UGM 2008 Kuala Lumpur
11m³ (69bbl) per slugcatcher
Current Slugcatcher DesignSlugcatcher in Slug/Ramp Up Receiving ModeSlugcatcher in Slug/Ramp Up Receiving Mode
Gas
Slugcatcher in Parallel
Condensate
Configuration
WaterAssumption:
1. Slug will be contained both upstream and downstream of weir2. Minimum liquid level of 250mm is achieved prior to slug arrival3. Slug is contained to 80% of liquid inventory in vessel
Slug volume available (yellow volume in figure) is 76.6m³ per slugcatcher.
OLGA UGM 2008 Kuala Lumpur
Hence, two slugcatcher (current scheme) can contain up to approx 150m³.
Slugcatcher Capacity Check
R ltResults
By tolerating additional 4hours ramp up duration,
(1) l t h bone (1) slugcatcher can beeliminated.
Benefits
Two slugcatchers
One slugcatcher
• Saving of USD 5 million• Simpler operation• Eliminate flow splitting
OLGA UGM 2008 Kuala Lumpur
Benefits of Performing runs
• Reduced one 2.5m (ID) x 20.0m (T/T) slugcatcher
S d USD 5 illi i CAPEX• Saved USD 5 million in CAPEX
• Simpler operation, eliminate flow splitting
• Improved delivery time for long lead equipment
• Enhanced operational understanding on the effects of ramp upEnhanced operational understanding on the effects of ramp up
OLGA UGM 2008 Kuala Lumpur
Other Project by Synergy
C t D t FPSO P j t I d iCurrent Deepwater FPSO Project, Indonesia
• Flow assurance to study hydraulics andslugging condition.D i b d Sh ll D t Off h• Design based on Shell Deepwater OffshoreDesign Engineering Practice, DODEP
• Using OLGA® as proven software for flowassuranceDesign of sl g recei ing facilit• Design of slug receiving facility
Past Project Experience
• Petronas Ruby Field • Kodeco West Madura KE Field• CNOOC Southern Business Unit Operations
OLGA UGM 2008 Kuala Lumpur
• Santos Oyong Pipeline Operation Revisit