a semi-sub for tender assisted drillingjourneesdupetrole.aftp.net/files/45-atelier 11...
TRANSCRIPT
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THE HORSE SHOE RIGA Semi-Sub for Tender Assisted Drilling
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Presentation Outline
• Overview of the Horse Shoe Tender Assisted Drilling Rig– The difference of the Horse Shoe compared to existing tenders – Simplified Rig Up – Detailed drawings of the Horse Shoe Semi Sub Tender– Derrick Set, Drill Floor and BOP Floor– General specifications
• Advantages– Time savings - rig up/rig down– Waiting on weather– Economical advantages– Safety – Maintenance
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The Difference with Existing Tenders?
Barge Tender
Semi-sub Tender
Horse Shoe
46 m
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The Difference with Existing Tenders?
Horse Shoe
80 m
Barge TenderSemi-sub Tender
Horse Shoe
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The Difference with Existing Tenders?
Larger deck spaceLarger mud tank volumeLiving quarter capacity increasedMore stability - less Waiting on WeatherOffline capacity for make up and break out – faster drillingDecreased rig up / rig down timeEnhanced Safety – Less heavy liftOperations in deeper waters
Horse Shoe Tender Tender Assisted Drilling Barge VS.
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The Difference with Existing Tenders?
• Both Rigs are large with large storage capacity
• Both Rigs stable in severe weather conditions.
HORSE SHOE ADVANTAGES:
FAST RIG UP DUE TO SINGLE LOAD LIFT !
Enhanced Safety – Less heavy lift – Simplified Maintenance
Horse Shoe Tender VS. Semi Sub Tender
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Simplified Rig Up – Step 11. TENDER APROACHING THE PLATFORM
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Simplified Rig Up – Step 2 and 3
2. LIFT DRILLING PACKAGE TO CLEAR PLATFORM
3. TENDER APROACHING AND ‘SWALLOW’ PLATFORM IN THE ‘HORSE SHOE’
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Simplified Rig Up – Step 4 and 5
5. TENDER PULLING CLEAR TO DRILLING POSITION.
4. SET DRILLING PACKAGE ONJACKET BY BALLASTING DOWN
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Simplified Rig Up – Final Step
6. RIG READY FOR DRILLING
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Final Drilling Position
Sea Level
13 m
24 m
80 m
Level 0Level 1Level 2Level 3Level 4
Bottom
46 m
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Overall Arrangement Top View
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Drilling Configuration Top View
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Overall Arrangement Deck Level 0
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Overall Arrangement Deck Level 1
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Overall Arrangement Deck Level 2
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Overall Arrangement Deck Level 3
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Overall Arrangement Deck Level 4
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Derrick Set Overall Arrangement
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Derrick Set Drill and BOP Floor
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General Description• Rig type: New design – Horse Shoe Semi Sub
The semi sub is able to place the DERRICK SET in ONE GO!
• Operating water depth: – Maximum water depth 150 m (mooring can be adapted to deeper waters)– Minimum water depth 20 m
• Classification category: Det Norske VERITAS (DNV).
• Hull:– Length 80.0 m– Width 46.0 m– Height at bow (incl. helideck) 40.2 m– Height at stern 21.0 m– Draft (Transit) 7.8 m– Draft (operation) 13.0 m– Horse Shoe opening width 30.0 m– Horse Shoe opening length 26.5 m– Variable load capacity 7500 mT
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General Description• Derrick set, commissioned on-shore “once and for all”
• Double Standing Pipe Rack for tubing and casing.
• 1200 m2 extra available storage deck during operation.– Innovative solution with foldable / skiddable deck– Total deck approximately 3000 m2
• Option to make the semi-sub self-propelled.
• Can be fitted with a dynamic positioning system.
• Can be adapted to install a derrick set with load limitation on the Jacket.
• Can be used as Multipurpose Services vessel for:– Coiled tubing operations– Drilling associated logistics operations
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General Description• Automatic ballasting and bilging system
– Permitting the tender semi-sub to remain horizontal under variable load.
• Derrick lifting system based on jacks (800 mT)– Jacks range of elevation 20 meters.– Proved and used design by Dietswell – RCR-2000 drilling rig.
• Living quarters for 144– 12 double bed rooms.– 30 4-bed rooms.
• Helideck adapted for Sikorsky S61.
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Time required for Rig-up/Rig-Down
Flat bottom tender rig: ~8 days
Semi-sub with onboard crane: ~4 days
Horse shoe tender rig: 1 day
The above required rig-up / rig-down time assumes that the weatherconditions are good and allow for crane operations from a tenderassisted drilling barge.
Under more severe weather conditions, the difference in rig-up / rigdown time between the Horse Shoe Rig and a normal semi-sub ortender assisted drilling barge will be even more important.
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Weather Down Time During Drilling Operation
• Flat bottom tender rig: 10%
• Semi-sub with onboard crane: 2%
• Horse shoe tender rig: 2%
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Economical Advantage – Reduced NPT
257318348Drilling Days / Year
108 days47 days17 daysTotal Non Productive Time (NPT)/Year
10% -> 28 days2% -> 7 days2% -> 7 daysWeather Down Time (Yearly)80 days40 days10 daysAssumption: 10 Moves/Year
FLAT BOTTOM
TENDER RIG
SEMI-SUB TENDER RIG
HORSE SHOE TENDER RIG
NUMBER OF EXTRA DRILLING DAYS PER YEAR BY USING THE HORSE SHOE SEMI-SUB DRILLING RIG
CONCLUSIONS:• 91 Extra Drilling Days/Year compared with Flat Bottom Tender Rig• 30 Extra Drilling Days/Year compared with Semi-Sub Tender Rig
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Safety Advantages
• Minimized intervention during the lift-up. – The lift-up of the derrick set is done using 4 jacks instead of a crane.– During the lift-up, the derrick set is secured to the 4 jacks. – No swinging of hanging objects.
• Minimized number of people involved in the lift-up of the derrick set – Computer assisted and remote controlled movements of the derrick set. – No manhandling of lifting gears.
GLOBAL SAFER OPERABILITY
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Maintenance Advantages
• Derrick set placed on the well-head platform in ONE GO!– Derrick set transported “ready-to-use” and not in modules.– No need for assemble/dismantling of the derrick set.– No welding required.– Minimized risk of structural damage compared with derrick set build
from modules (repeated assemble/dismantling).– Umbilical permanently connected: no leaks, no pollution….
• “Once and for all” derrick set commissioning. – Top Drive.– BOP Control Lines– Flow Lines– Drawwork cable– …
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Find Out More About Us
www.dietswell.com
DIETSWELL CONTACT DETAILS:Frederik Nilsson, Ph. D.Business Development Manager
Address: Actipole - 134 Ave. Joseph Kessel78960 Voisins le Bretonneux
Phone (office): +33 1 39 30 21 60Phone (direct): +33 1 39 30 13 95Fax: +33 1 39 30 21 61Mobile: +33 6 86 32 07 27e-mail: [email protected]