Norshore Drill Ship Presentation 1113

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Multipurpose Riserless Drilling Vessel

NORSHORE ATLANTIC an efficient and environmental friendly multi purpose drilling

vessel. The vessel is primarily designed for riserless operation utilizing known and

field proven technology, resulting in significant cost reduction for our clients

Norshore Atlantic

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Norshore Atlantic

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Norshore

• Norwegian based, fully integrated Drilling Contractor Company.

• Purpose built Riserless Drilling Unit, Norshore Atlantic – Built according to the Norwegian Rules and Regulation, Mobil Offshore Unit. (More

strict than MODU).

• Advantages to Operators – Reduced Well Cost

– Increased Rig Utilization of Rig(s) on Contract

– More efficient Field Development

– More efficient Sub Sea field Decommissiong.

– Reduced Logistic

– Early Pilot Hole at Low Cost

• Well Management Services (Optional)

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Multi purpose vessel, focused on drilling

Riserless Drilling

• Drilling with 18 ¾” 10k BOP

• Plug & Abandonment

Well

Intervention

• Light Well Intervention w/SS Lubricator (Wire Line, Tractor Operations)

• Coil Tubing Intervention w/ Stiff Top Compensated Work Over riser.

Other

• Module Installation, SS-crane or “Wet Tow” of Large SS Modules (Templates,

Manifolds, Etc..)

• Dredging, ROV Support – Survey

Significant cost savings by using the right-sized tool

Sub Sea

Construction

• MOBO Installation (SS Pumps w/Caisson)

• Infield treaded flowline.

• Through Tubing Rotary Drilling (TTRD)

Cost reduction

potential; 30-50%

Cost reduction

potential; 30-50%

Additional capabilities

Riserless

Completion • Open Water Completion Running in

combination with LWI.

Cost reduction

potential; 30-45%

Norshore Atlantic - specification

Capacities

Main particulars

• Length overall : 115,40 m

• Breadth molded 28 m

• Depth main deck 9,00 m

• Deadweight approx 6,500 t

• Moon Pool 7,20 x 7,20 m

• Speed (dm-4,5m, open moonpool) 14,0 kts

• 98 Beds

• DNV *1A1 – Ship-shaped Drilling Unit – (Drill(N))-FS –

E0 – DYNPOS AUTRO-DK – Heldk SH-LFL* –

HL(2,8) – COMF-V(3) - Clean design

• Fresh Water 1,000 m3

• Fuel oil 1,400 m3

• Liquid Mud 1,150 m3

• Dry Bulk (Cement/barite) 2 x 76 m3, 2 x 70

• Hydrocarbon Slop tank 85 m3

• Methanol 7 m3

• Work deck 1,200 m2

Equipment

• Main engines : MAK (6pcs) – 14,600 kW

• DP-3, Thrusters : RollsRoyce – 2x3,000kW and 4 x

1,500 kW

• Drilling – Module Handling tower : NOV (500 sT A&P HC)

• Top Drive (Continuos Drilling Torque 55200 ft-lb)

• Drilling Equipment; NOV (including 3x1600 mud pumps)

• Remote Operated Pipe Handling, NOV.

• Mud Mixing Package; NOV

• Offshore Crane : NOV (140t AHC, 2500 m wire)

• 18 ¾" 10 K BOP (4 x Rams, 1 x Annular)

• Mud Recovery System

• 6 x 100 mT Skid Stations

• ROV - 175 HP Work ROV (For rental through

Oceaneering).

• Cement Unit (For rental through Halliburton)

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Norshore Atlantic under construction

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21 November 2013 7

Norshore Atlantic under construction

Norshore Atlantic under construction

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North Sea Scenario Norshore Concept

Semi-submersible drills entire well; tophole

drilling, drilling with riser/BOP, well completion.

75 Days 10 + 65 Days

Norshore drill top holes & last part of P & A.

Drilling rig/ship to perform remaining drill work.

An oil company with three drilling rigs can drill ~14 wells in one year

With one Norshore unit and three drilling rigs he can drill ~17 wells in one year

Tophole Drilling - A more efficient way of drilling

Well cost reduction of 5 -15 %.

Annual increased rig utilization of 10 - 20 %

World wide market

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Brazil, Pre-Salt potential savings, Norshore top hole for field development

6 Rigs in operation 6 Rigs + Norshore Atlantic

The traditional method; The improved method;

•16% more wells/year; from 21 to 24

• Savings > USD120 mill/year

• Early production from 3-4 wells/year

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Load Out Plan

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Riserless P & A – Replace Rig

• Replace Rig

• One unit for the entire P&A

activity.

• Full Pressure and Well Fluid

Level Control.

• More efficient solution.

• Lower dayrate

• Toat Well (P&A) Management.

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Riserless

P & A

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Riserless P&A

Tripple Operation

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Riserless P & A - Step 1 (H – XMT)

• Arrive Location

• Run BOP using SS Crane

simultaneously retrieveing XMT

Cap.

• 18 ¾"–10 K BOP Configuration: – H4 Connector

– 3(2) x PR

– 1(2) x BSR

– Annular

– H4 Connector (WH Profile)

• BOP is being run with BOP

Control Umbilicals and K/C

Lines (Redundancy) and WOCS

Umbilical for Control of XMT.

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Riserless P & A - Step 2

• Land and Connect BOP.

Perform Connection test.

• ROV installing WOCS Jumper

Umbilical

• Run 7 ½" Lubricator Section – H4 Connector at bottom section of

Lubricator.

• Land and Connect Lubricator

section on top of BOP (H4

Connector).

• Perform Connection Test.

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Riserless P & A - Step 3

• Run in with Slick Line / Wire

Line and Crown Plug Retrieving

Tool.

• Retrieve Crown Plugs.

• Kill the well – pumping down the

Kill Line ad against Closed

BSR.

• Run WL and install and test

plug below Producion Packer.

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Riserless P & A - Step 4

• Disconnetc Lubricator and pull

out with same.

• Simultaneously install Well Fluid

Pump System (Mud Recovery

System).

• Run in with Tubing Hanger

rerieving toool on DP and pull

out Upper Completion. – Pressure Control while pulling

Tubing Hanger free i.e. Closed bag.

– Flow check i.e. The Well Fluid

System Controls fluid level in Well.

• Install and pressure test shallow

retrieval plug in Production

Casing.

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Riserless P & A - Step 5

• ROV disconnecting MRS Hose

and Control Cable from MRS

Funnel.

• Lift off BOP with SS Crane

• Retrieve XMT from Derrick

• Efficient Dual Operation.

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Riserless P & A - Step 6

• Install BOP again and perform

test against Plug in Prod

Casing.

• Hook up MRS system.

• Retrieve Shallow Plug – Pressure Control i.e. Closed

Annaular while releasing plug.

– Flow Check

• Start P&A with Pressure Control

and acurate Well Fluid Level

Control. – Set Cement Plugs

– Section Milling

– Cutting and Retrieving Casing

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FLOWCHE

CK

FLOWCH

ECK

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Mu

d c

olu

mn

in W

HIN

(m

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Me

ter

Cas

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pu

lled

Time

Casing

Mud column inWHIM

Refill

INFLU

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INFLUX

LOSS

LOSS

Riserless Drilling

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• Water Based Mud System

• 30" Conductor

• 20" Surface casing

• 18 ¾" WH

• 18 ¾ BOP

• Mud recovery System

• Standard cgs. prg.

Riserless Drilling

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• Enter most of the Offshore bases

– 7 m draft

• Load up one complete well

• No need for Standby Vessel

• Water Based Mud Sytem

required

Riserless Drilling

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• More efficient operation compared to

Jack Up.

Top hole + main well completion, Step 2.

Top Hole Drilling 12 days (Drill for and run 36” and 20”)

19% of the Well Construction Time

Main Drilling Phase 40 days (Run BOP, drill for and run 13-3/8”, 9-5/8”

and 7” casings. Do initial completion)

65% of the Well Construction time

Main Completion Phase 10 days

16% of the Well Construction Time

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SAVING ON DAY RATE

• 3 mUSD

SAVING ON DAY RATE

• 2,5 mUSD

Cost reduction, increased rig utilization and increased

numbers of wells drilled per year. • Rig Dayrate – 450.000,. USD

• Norshore Atlantic Day Rate – 200.000,- USD

SAVING PER WELL

• Direct day rate savings on drilled well; 20% (5.5 mUSD)

• Rig can be utilized for 22 days on other well; USD10 mill in increased efficiency

Typical average well construction sequence; 52 days drilling and 10 days completion work.

General, Run Upper Completion in Open Water

• Rig install lower completion – 1st barrier

• Rig install 2nd barrier. – Seperate run – barrier assembly. Two internal WL retrievable barriers and one annulus

packer. Verify 2nd barrier by use of Gauges and readback to surface.

• Rig leaves the Location.

• Norshore Atlantic arrives Location (Case: Horizontal Tree).

– Install Horizontal XMT either by SS Crane or from Tower.

– By SS Crane, Install on top of XMT ”Stand Alone” Cutting/Closing Device. (Offline

Activity) • H4 Connector / / 2 x Blind Shear Ram / H4 Connector / Removable Protection - Guiding Funnel

• Alternativ, utilize 18 ¾" BOP.

– Run Upper Completion

– Install SS Lubricator

– Retrieve Internal Plugs, Hold Open Sleeves.

– Install Crown Plug, Tree Cap

– Hand over to Production or Clean Up Well to Norshore Atlantic.

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Optional, Well Intervention Vessel

• Module Installation

• Wireline / Tractor Riserless Well Intervention

with LRP/Lubricator.

Light Well Intervention Intervention with Riser

• Riser Intervention with LRP/EDP - Stiff Top

Compensated Riser.

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LRP/EDP

6 5/8” DP Riser

or Riser ID – 7,25”

Lubric. Valve Sec.

Rotatable Riser

Tension Ring

Subsea Construction Vessel

• Sub Sea Module Installation – 150 mT

compensated Offshore SS Crane.

• ”Wet Tow” – Items moved Offshore,

hanging below the vessel in safe

distance above the Seabed.

• 500 sTon Compensated during

Transit and Installation.

• Large size Sub Sea Equipment

Installation

• Templates / Manifolds / Etc..

• ROV support - survey

Alternative to large Crane Vessels

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