LONESTAR

The Lone Star (TDS2000 PLUS) semi-submersible drilling rig is a cost effective drilling unit designed with drilling equipment suitable for drilling well, work over (completion and intervention), exploration drilling as well as development drilling. It embodies the collective past experience of new builds and conversions of semi-submersible units, which results in a rig, which is optimized for offshore operations, environmental protection and safety aspects.

The Lone Star (TDS2000 PLUS) and equipment have been designed to operations in environmental conditions of the Gulf of Mexico, West Africa, Brazil and similar conditions up to 7,880 ft. (2.400 m) water depth, and can drill up to 24,600 ft. (7.500 m) from RKB with a variable drilling load of up to 6,470 ton (7,131 sh ton).

Special consideration for the Campos Basin environmental conditions is taken into account in the design to guarantee adequate and satisfactory operations in the brazilian offshore.

The hull structural steel material has been designed for ambient temperature of -10 °C. Maximum ambient temperature has been established at 40 °C. Seawater temperature shall be based on 0° to 32 °C.

The vessel is designed to keep station with eight azimuth thrusters utilizing a dynamic positioning system to meet ABS Class requirements for DPS 2 and Petrobras specification. The DP-system have been designed to keep the vessel on location according to the Campos Basin 1-year environmental conditions with the riser connected and under drilling operations.

TeChnICAL SPeCIfICATIonS

GeneRALname: Lone Starflag: PanamaYear Built: 2008 (Keel Laying)Builder: GPC Yard, Abu DhabiDesign: Gusto TDS-2000 PLUSClassification: ABS - Maltese Cross, A1, PAS, AMS, Column Stabilized Drilling Unit, DP2

MAIn DIMenSIonSLength: 97.54 m (Pontoon overall)Breadth: 70.10 mDepth: 2.43 m (Main Deck)Columns: 4 x (11 x 15 m) (Square)Pontoons: 97.54 x 15 x 7.62 m (Length x Breadth x height)Deck Area: 102.8 x 64.6 m (Main Deck)

DeSIGn oPeRATInG ConDITIonSMaximum Water Depth: 7,880 ft.Drilling Depth Capacity: 24,600 ft.operating Draft: 18.30 m (60 ft.)Transit Draft: 7.50 m (24.5 ft.)Survival Draft: 13.72 m (45 ft.)operational Displacement: 32,000 tonTransit Displacement: 23,000 ton

eLeCTRIC SYSTeM AnD DIeSeL MoToRSMain Power: eight eMD, Model Me20-710-G7C-T2, 4.0 MW, 900 rpmMain Generators: eight Baylor AC Generator, Model G8552XT-649, 3.8 MW, 900 rpm, 11KV Power Distribution: noVemergency Power: one Caterpillar, Model 3516B - SR4B, 1.8 MW, 1,800 rpm, 480V

PRoPULSIon/ThRUSTeRS Thrusters: eight Wartsila Lips Azimuth Thrusters, Model fS2500-463nU2.6 MW, driven by electric motor, variable speed / VfD controlled, 2 @ each pontoon endDynamic Positioning System: Kongsberg Maritime /SDP32, hIPAP450, DPS700

MAXIMUM oPeRATInG / enVIRonMenTAL ConDITIonSnormal drillingDraft / Displacement: 18,30 m / 31,758 tonVariable Deck Load: 6,470 ton (drilling), 4,689 ton (transit)Wave height (maximum): 10,7 mPeak Period: 13,70 sWind Speed (maximum): 19,63 m /sec Current Speed (maximum): 1,61 m /sec

DRILLInG eqUIPMenTDerrick: noV Bolted Beam-Leg Dynamic DerrickStatic hook Load: 2,000 Kips; Base: 185 ft. x 40 ft. x 43 ft.; V Door Level: 72 ft.Drawworks: noV, SSGD-1000-6000-48-82-9, 6000 hP driven by four AC motors (VfD), Baylor, CM632UUTRotary Table: noV, RST, 60 1/2”Top Drive: noV, TDS 1,000 A, 2,000 KipsTraveling Block: noV, 7 x 72” sheaves, 2,000 KipsMotion Compensator: noV Active heave Compensator, 800 KipsCementing: Schlumberger CP665, 15,000 psiMud System:- 4 x Mud Pumps noV, 14P220 triplex, 2,200 hP, driven by two AC motors Baylor @ each pump- 4 x Brandt Cascade Shakers, LCM3D/CM2- 1 x Brandt Shaker with Mud Cleaner / Desilter / Desander, LCM3D

RIG SToRAGe CAPACITIeSUpper Deck: 2.5 ton /m²Riser Rack (horizontal): 105 joints / 75 ft.Miscellaneous Storage Area: 2.44 ton /m²Bulk Bentonite / Barite: 3 / 3 x 2,200 ft. 3 eachBulk Cement: 3 x 2,200 ft. 3 eachSack Storage Area: 2,000 sacksLiquids: Drilling Mud: Active Tanks (8 ea.): 4,000 bbl; Reserve Tanks (2 ea.): 2,200 bblSlug Tanks (1 ea.): 70 bbl; Sand Trap and Processing Tanks (6 ea.): 720 bbl; Trip Tank (1 ea.): 108 bblBrine Storage (2 ea.): 2,200 bblSynthetic Mud Storage (2 ea.): 2,200 bblDrill Water: 2,000 m³ fuel oil: 2,276 m³ Potable Water: 226 m³

SUBSeA SYSTeMSBlowout Preventers (Trimmed for h2S Services): hydril 18 3/4“x 15,000 psi WP, one Single + Two Double ram units.Two hydril GX Annular 18 3/4“x 10,000 psi WP, both on LMRPBoP handling: Patriot BoP transporter rated for 400 tonControl System: hydril multiplex, blue/yellow cable reel, hot line hose reelhole Position Indicator: KongsbergRiser Angle Indicator: KongsbergDiverter: one hydril fS21, 60 “x 500 psi working pressure.Drill Pipe: 7500 m x 5 ½” TSDS-50Drill Collars: 6 x 9 ½” DC, 27 x 8” DC, 36 x 6 3/4” DC and 30 x 5“ hWDP

ChoKe & KILL MAnIfoLD(Trimmed for h2S Services):WoM 15,000 psi manifold, 3 1/16” manual valves, trimmed for h2S serviceTwo manual chokes and two hydraulic chokes

MARIne RISeR SYSTeMAker Kvaerner Clip Riser - 21” oD x 75 ft. long, with clip connectorsRiser Tensioning System: Ten noV 250 Kips, 12.5 ft strokeRiser Running Tools: Aker Kvaerner Clip RiserTest Tool - Aker Clip Riser test tool.flex Joints: oil States 18 3/4”x 5,000 psi WP

MooRInG SYSTeMWinches: Two oil States Skagit, electrical, 450,000 lb stalling pull, wire capacity (3”x 400 m) minimum break load 389 MT each one. Anchors: Two of 8 ton designed such as Stevpris type

CRAneSTwo Kingpost Deck Cranes, Patriot, series 240, Model 200D, 64 ton one BoP Auxiliary Maintenance Crane, oil State Skagit, Model 200B-50, 25 ton

DRILL fLooR22 m (Length) x 16 m (Width), wind walls, variable finger racking board, fall protection, tugger and block hang-off points.Drill floor Manipulator Arm noV DfMA-U-5000noV Catwalk Machine PR40-75hSPiping Racking System noV-PRS8inoV foxhole

Moon PooL40 m x 6,28 m x 8 m

SPeCIAL feATUReSPatriot Riser Gantry Crane 2 x 35 ton ratedData Acquisition System noV Amphion/SDI Systemhelideck for Sikorsky S-92Two water maker, 50 ton capacity eachAccommodations for 140 people are provided with galley, recreation, offices, sick bay, dedicated workshops for mechanical, electrical and subsea areas.