Frigstad D80 DP3

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The D80 DP3 is a deepwater design capable of operating down to 9,000 ft water depth. Ability to transit with full set backs, 10.000 ft Riser in 110 ft stands and 60.000 ft drillpipe, saves days on each rig moove which again translate to saved overall cost.

The general arrangement of the unit has been carefully developed utilizing the extensive practical experience of the personnel at Frigstad Engineering and Frigstad Offshore. All aspects of equipment functionality and placement have been carefully considered to ensure that each process is safe and efficient.

Optimized rig design & efficiency

Single quad derrick with offline standbuilding and set back for 40.000 ft drillstring
Trip saver with skidable N-line tensioner system
Designed and prepared for all third party operations
Triple mud system
Handsfree gooseneck system
Large deck space and internal storage/workshops
Hight transit speed
Rig moves with full set-backs
Vertical racking capacity 7,200 ft riser inn 100 ft stands and 40,000 ft drill pipe in quad. Stands
Variable deck load capacity of more than 5,000 tones
2 x 100 tonnes platform cranes and large deck space for handling and storage of a number of fully assembled X-mas trees
Large moonpool opening of 39 x 8 m
Powerful DP3 system with 8 thrusters that enables the rig to stay on location even in severe weather conditions and transit by up to 8 knots.
Anchor winches for hook-up to pre-set mooring system

Operations

Drill production & exploration wells
Batch Drilling
Completion
Intervention
Wire line operations
Plugging of wells
Well testing and clean-ups
Coiled tubing
Managed pressure drilling

Images

Outline Specification

REGULATIONS

SOLAS 2011, MARPOL 1973/78, IMO MODU CODE 2009, all with latest amendments

CLASSIFICATION

DNV 1A1 COLUMN STABILIZED DRILLING UNIT , DYNPOS AUTRO (DP3), POSMOR-ATA, CRANE, HELDK-SH, ECO, F-AM, DRILL and BMW-T

ENVIROMENTAL OPERATING LIMITS

Maximum wind velocity 70 knots / 100 knots

Wave height Hs 15,8/29,4 m (51,8/96,5 ft)

Air gap (Operating/Survival) 12.1 /15.6 m (39.7/51.2ft)

PRINCIPAL PARTICULARS

Length of Pontoons 105 m (344,5 ft)

Width & Length, Pipe Rack Deck 76 x 73 m (249,3 x 239.5 ft)

Height to Pipe Rack Deck (ABL) 39,6 m (129,9 ft)

Draft (operational) 19 m (62.3 ft)

Draft (survival) 15.5 m (50.9 ft)

Displacement (operational) 45,038 t (49,646 st)

Displacement (survival) 41,467 t (45,710 st)

Displacement (transit) 35,523 t (39,157 st)

Water depth (max) 9,000 ft (2,743 m)

Drilling depth (max) 50,000 ft (15,240 m)

STORAGE CAPACITIES

Bulk mud 327 m³ (11,550 ft³)

Bulk cement 327 m³ (11,550 ft³)

Sack material, upper hull 8,000 sacks

Base oil for mud, pontoon 887 m³ (5,579 bbls)

Liquid mud/brine, upper hull 1,301 m³ (8,183 bbls)*

Liquid mud/brine, pontoon 2,772 m³ (17,435 bbls)*

Diesel fuel oil (MDD), pontoon 4,747 m³ (29,858 bbls)*

Drill water, pontoon 3,325 m³ (20,914 bbls)

Potable water, pontoon 965 m³ (6,070 bbls)

Open pipe rack deck area 3,200 m2 (34,445 ft2)

Variable deck load (max oper.) 6,319 t (6,966 st)

Variable deck load (max transit) 5,000 t (5,512 st), excl. anchors and mooring wire

Payload (max operational) 12,390 t (13,658 st)

* denote 90% capabilities

ACCOMODATION / OFFICE

Total capacity of 160 persons in 1 and 2 person cabins with private sleeping area. Twelve (12) office space and service facilities.

MATERIAL HANDLING

Deck cranes Two (2) 100 t revolving deck cranes with 55 m boom. Capable of handling any under-water thruster change out. One (1) 12 t knuckle boom tubular handling crane.

Cargo handling and logistics Two (2) 6 t cargo elevators & several forklifts to service storage and machinery areas on pipe rack deck and inside the deck box and pipe rack deck including: engine rooms, mud pump room, cement unit room, workshops, sack storage, warehouse, galley stores

MARINE SYSTEMS

Main power / emergency power Eight (8) diesel engines, each with 4,800 kW capacity. Total installed power is approx. 38,400 BMW. Two (2) of the main generators are assigned as both main and emergency generator. Each shall be located in separate compartment.

Dynamic positioning DP Class 3. Eight (8) MW azimuth thrusters.

Power distribution AC power propulsion and DP with MP+AW drives and VM system. 11 kV AC alternators.

Mooring system Four (4) double drum winches with eight (8) fairleads for connection to pre-set system. Each with a stowage capacity for 400 m wire, diameter 89 mm.

DRILLING SYSTEMS

Drilling rig Single quad. Derrick with 1,000 st capacity, set-back for 40,000 ft drill string/casing in 124-135 ft stands, equipped with offline stand building capacity.

Rotary table One (1) 60.5” rotary with independent drive

Top drives One (1) top drive, with 1,000 st capacity.

Riser tensioners Six (6) in-line hydraulic cylinder riser tensioners mounted on skid system (DATS). 3,200,000 lbs total net tensioning capacity (6 engaged).

BOP and riser Two (2) 18,75” x 10,000 psi annular preventors. Six (6) 18,75” x 15,000 psi Ram preventors. 7,200 ft of 40 ft, 21” riser joints with c&k, booster and hydraulic lines. Storage on piperack deck for 1,800 ft of riser

Drill string 5 7/8” drill strings with subs, drill collars, heavy weight drill pipes.

DRILLING FLUID SYSTEMS

Mud pumps and treatment system Four (4) Main Mud Pumps, Triplex, 2,200 HP, 7,500 psi wp. Four (4) shale shakers, two (2) desilters, one (1) Gumbo Screen, two (2) degasser units and two (2) 60 bbls trip tank

OTHER

Helicopter deck capacity Designed for MI8 and EH 101 helicopters.

Life-saving equipment Four (4) lifeboats with total capacity of 320 persons. Fourteen (14) inflatable life rafts with capacity of 25 persons each. One (1) fast rescue boat.

Frigstad D80 DP3 - Design Brochure
(pdf, 7.2MB)

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