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Wirth pile top drill rigs Reliable systems for on- and offshore
Wirth pile top drill rigsReliable systems for on- and offshore
2 About usWirth pile top drill rigs
Experts at your disposalAker Solutions is your first choice for reliable pile top systems for onshore and offshore applications. Cost efficiency and outstanding performance are the key factors that make us stand out from the competition.
Our experienced specialists provide comprehen-sive advice on selecting the correct equipment for the individual site conditions – from the tender phase right the way through to project execution.
About Aker SolutionsAker Solutions provides oilfield products, systems and services for customers in the oil and gas industry world-wide. Since 1895, Aker Solutions in Erkelenz has been a leading supplier of civil construction products for largescale projects. Our global network enables us to provide full local service.
Venezuela – Orinoco BridgeThree Wirth PBA 818 and one Wirth PBA 612 to install 156 piles (bridge length: 3.2 km), with diameters of 2.4 m and 1.8 m, and depths of up to 60 m
Australia –Tanker terminal Wirth PBA 612/2 000/200 for raker piles at an inclination of up to 1:3, with drilling diameters of up to 1.25 m and depths of up to 50 m
Solid foundations with Wirth pile top systems
© Consórcio BRAVE
© RG Tanna Coal Terminal Wharves, Port of Gladstone, Australia, Courtesy of Central Queensland Ports Authority
3 Areas of applicationWirth pile top drill rigs
Areas of application
The Wirth PBA with the high torque power swivel is the ideal machine for hard rock drilling, applying the following special methods:
n Pile rock socketingn Hard rock drillingn Anchor drillingn Secant wall n Overreamingn Bell-out of the rock socket
USA/New Jersey –widening of Driscoll BridgeWirth PBA 818/2 500/300 used for the building of a third bridge spanning a distance of 4 400 feet and 28.3 feet wide, with a drilling diameter of 1 680 mm and depths of up to 50 m
Wirth pile top drill rigs by Aker Solutions provide the most efficient solution when it comes to setting up deep and large-diameter foundations in hard rock. They have been successfully deployed in various applications, both onshore and offshore:
n Superstructures and buildingsn Drilling platforms, barges and jack-upsn Harbours, jetties, dry docks and dolphinsn Bridges, piers and causewaysn Marine sewerage diffusersn Offshore wind farmsn Dam rehabilitation
Hong Kong – SunleyWirth PBA 936/3 000/300Ventilation shafts for a metro tunnel, shaft diameter 3.0 m up to 90 m depth including 19 m rock socket in hard granite with 230 MPa
4 Benefits to youWirth pile top drill rigs
Close consultation and supportOur experts provide comprehensive advice, right from the pre-engineering and tender phases. This includes giving an indication of expected rates of progress along with advice on the selection of supporting equipment. Aker Solutions’ drilling experts are available for commissioning and for training personnel.
Outstanding drilling performanceIn each class, Wirth PBAs have an excellent power/weight ratio. Maximum drilling per-formance is guaranteed, even under the toughest conditions, along with easy and fast equipment handling.
Economical RC drillingAker Solutions is the world market leader in reverse circulation drilling. This method is highly efficient, especially for large diameters and great depths.
Quick assembly
The modular design and the quick-action multi-couplings ensure a fast and easy set-up of the drill rig.
Unmatched availability
The use of special select materials, combined with experience gained over more than 25 years, has led to higher demands concerning the quality of production. As a result, Aker Solution has achieved the highest availability for years, combined with a low spare-part consumption rate and low maintenance costs.
Maximal versatility
Exchangeable cutters ensure that drilling is possible in varying geological formations. Different diameters can be created by just one machine, by exchanging the drill bit accordingly. The drilling depth can be increased simply by extending the drill-pipe length.
High independency An onboard crane allows equipment to be handled independently of the installation crane.
High availability of spare parts hotline
Our spare parts service guarantees you receive original spare parts.
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24/7
We drill through hard rock deeper and faster – benefits to you
5 Experts at your disposalWirth pile top drill rigs
Experts at your disposal
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Pile top drill rig
Crane
Hydraulic power pack
Air compressor
Drill string
Mud tank system
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Our experienced experts provide comprehensive advice all over the project. This includes support in the selection of further equip-ment for the successful operation of a Wirth PBA as well as an indication of expected rates of progress.
Rig arrangement
6 ReferencesWirth pile top drill rigs
References
More than 250 Wirth pile top drill rigs have proven to be outstandingly reliable and efficient in numerous projects around the world.
USA/Wisconsin – Elm Road Generating StationFour water intake shafts in limestone with a strength of 150 MPa, each with a diameter of 4.5 m, a depth of 55 m and an average penetration rate of 0.25 m/h
Brazil – Peixe AngicalPiles with a diameter of 1.8 m and a depth of up to 78 m for a secant cut-off wall to stop the seepage of the existing dam
China/Hong Kong – Stonecutters BridgeWirth PBA 936/3 000/300 for foundation of flyover piles, each with a diameter of 3.0 m and depths of more than 100 m.
7 ReferencesWirth pile top drill rigs
Australia – NorthWest ShelfWirth PBA 936/3 000/300 for foundation of the Angel oil and gas plat-form. Drilling diameter of 3.0 m and a drill string length of up to 110 m
Republic of South Africa/Cape Town – Ben Schoeman dockextensionWirth PBA 612 for foundation of 200 piles, each with a diameter of 1.25 m and a depth of up to 55 m
UK/West Coast –Burbo windfarmPile foundation for three MW wind turbines, with a drilling diameter of 4.5 m and depths of up to 60 m
© Woodside Energy Ltd.
8 ReferencesWirth pile top drill rigs
References
USA/California – San Francisco – Oakland Bay BridgeWirth PBA 933/3 000/300 for the reinforcement of the San Francisco Bay Bridge
Canada/Saint John – Canaport LNG terminalWirth PBA 612 for foundation of 60 piles, each with a diameter of 1.12 m and a depth of 80 m
USA/California –Carquinez BridgeWirth PBA 928/3 000/300 for the bridge foundation with piles of diameter 2.7 m (enlarged to 3.3 m, in part)
9 ReferencesWirth pile top drill rigs
USA/Alabama – W.F. Lake George DamCut-off wall in front of an active dam with more than 450 piles, each with a diameter of 1.27 m and a depth of up to 75 m.Formation drilled: various layers of limestone, with strengths of up to 135 MPa, and unconsolidated sand.
USA/Massachusetts –Wolf Creek DamWirth PBA 818/2 500/300 for a cut-off wall, with a drilling diameter of 1.27 m, depths of up to 90 m, rock strengths of up to 150 MPa
Bahrain – Saudia Arabia CausewayA 25 km highway with bridges totalling 12.5 km in length, 489 piles with diameters ranging from 3.75 to 4.0 m; two rigs worked simultaneously from jack-up barges, with each rig drilling and installing four piles per week
© TREVIICOS
© Walter Bibikow/JAI/Corbis
10 Reverse circulation drilling Wirth pile top drill rigs
Highest efficiency with reverse circulation drilling
Airlift swivel
Power swivel or rotary table
Discharge hose
Muck
Mud pit
Rock bit
Airlift drill pipe
Compressed-air inlet valve
Standpipe
Compressed air from compressor
The RCD method, also referred to as airlift drilling, is well-established as a robust and straightforward means of operation, which is highly effective for large diameters and great depths, both in onshore and offshore applications. Principle of operation: Compressed air is injected into the drill pipe below water level and just above the cutting head. As the air rises and expands within the drill pipe, the density in the internal liquid column is greatly reduced, leading to a difference in pressure between the liquid in the drill hole out-side and the liquid inside the drill pipe.
Due to the higher density in the outer column, the solids pass from the drill hole through the cutting-head suction suction opening, and rise up through the drill pipe. Provided that the correct air/liquid flow is established within the drill pipe, solids will be transported to the surface according to the airlift principle.
The differential pressure and thus the conveying capacity depend on the rate and volume of the compressed air injected, the depth of injection and the delivery head.
Aker Solutions is the world market leader in reverse circulation drilling (RCD). This method sets the standards for cost effectiveness and versatility.
11 Technical dataWirth pile top drill rigs
Pile top drill rig 408 / 1 300 / 200 612 / 2 000 / 300 818 / 2 500 / 300 936 / 3 200 / 300 1 450 / 6 000 / 330
Maximum drilling diameter 1.3 m51 in4.3 ft
2.0 m79 in6.5 ft
2.5 m98 in8.2 ft
3.2 m126 in10.5 ft
6 m 236 in 19.7 ft
Maximum power swivel torque
81 kNm59 200 ft lb
119 kNm88 000 ft lb
180 kNm132 500 ft lb
360 kNm265 000 ft lb
500 kNm368 500 ft lb
Maximum drilling speed infinitely variable 38 rpm 34 rpm 30 rpm 20 rpm 15 rpm
Maximum drill string weight 40 t 45 t 90 t 120 t 240 t
Maximum thrust force 400 kN88 200 lb
588 kN 129 650 lb
800 kN176 400 lb
1 000 kN220 500 lb
1 450 kN320 000 lb
Maximum pull back
600 kN132 300 lb
650 kN143 300 lb
1 100 kN242 500 lb
1 700 kN374 740 lb
3 000 kN660 000 lb
Hydraulic power pack rating 162 kW220 hp
273 kW371 hp
273 kW371 hp
403 – 433 kW 548 – 588 hp
403 – 433 kW 548 – 588 hp
Unit weight drill rig 17.0 t 22.0 t 28.0 t 33.0 t 64.0 t
Unit weight hydraulic power pack 4.0 t 6.5 t 6.5 t 10.0 t 10.0 t
Unit weight hydraulicclamping device 3.0 t 7.0 t 9.0 t 12.5 t Dependent on
diameter
Drill pipe data
NW (internal diameter) 200 mm7.87 in
200 / 300 mm7.87/11.80 in
300 mm11.80 in
300 mm (HT) 11.80 in
330 mm (HT) 13.0 in
Maximum length per rod 3 m118 in9.8 ft
3 m118 in9.8 ft
3 m118 in9.8 ft
3 m118 in9.8 ft
3 m118 in9.8 ft
Weight per rod 275 kg 606 lb
275 / 540 kg606 / 1 190 lb
540 kg1 190 lb
540 kg1 190 lb
678 kg1 495 lb
BHA stabilizer / Drill collar data
Standard flange diameter BHA stabiliser and drill collar
500 mm 20.0 in
700 mm27.6 in
1 000 mm39.4 in
1 400 mm55.1 in
1 400 mm55.1 in
Standard length BHA stabiliser and drill collar
1.5 m59.0 in4.9 ft
1.5 m59.0 in4.9 ft
1.5 m59.0 in4.9 ft
2.0 m78.7 in6.6 ft
2.0 m78.7 in6.6 ft
Weight without lead filling(drill collar only)
700 kg1 543 lb
900 kg1 984 lb
1 620 kg3 571 lb
3 780 kg8 335 lb
3 780 kg8 335 lb
Weight with lead filling (drill collar only)
2 000 kg4 400 lb
3 160 kg6 966 lb
6 620 kg14 600 lb
31 400 kg69 225 lb
31 400 kg69 225 lb
Air compressor
Delivered air volume 10 – 15 m3 / min353 – 529 ft3 / min
10 – 25 m3 / min353 – 882 ft3 / min
20 – 25 m3 / min705 – 882 ft3 / min
20 – 25 m3 / min705 – 882 ft3 / min
2 x 25 m3 / min2 x 882 ft3 / min
Operating pressure 13 bar188 psi
13 bar188 psi
17 bar246 psi
20 bar290 psi
20 bar290 psi
Back filling pump for airlift circulation system
Delivery volume 800 m3 / h470 ft3 / min
800 / 1 200 m3/ h470 / 706 ft3/ min
1 200 m3 / h706 ft3 / min
1 400 m3 / h824 ft3 / min
> 2 500 m3 / h> 1 470 ft3 / min
Pressure at delivery head (approximately) 5 bar72 psi
5 bar72 psi
5 bar72 psi
5 bar72 psi
5 bar72 psi
Specifications subject to change
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