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Wirth pile top drill rigs

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About us Wirth pile top drill rigs

Solid foundations with Wirth pile top systems About MHWirth

Experts at your disposal

MHWirth is a leading global provider of first-class drilling solutions and services designed to offer our valued clients with the safer, more efficient and reliable alternative. Our company vision is centered on an unparalleled commitment to quality and yielding economic advantages for our customers and stakeholders.

MHWirth 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.

As the largest subsidiary of Akastor, MHWirth has a global span covering five continents with offices in more than 20 countries. Drawing upon our global market success, we continue to seize opportunities through an established strong regional presence in the Americas, Asia and West Africa. Our 4300 dedicated professionals consistently strive to enhance customer satisfaction and form meaningful collaborations by creating a personalized experience.

Our experienced specialists provide comprehensive advice on selecting the correct equipment for the individual site conditions – from the tender phase right the way through to project execution.

Venezuela – Orinoco Bridge Three 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

© Consórcio BRAVE

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

© RG Tanna Coal Terminal Wharves, Port of Gladstone, Australia, Courtesy of Central Queensland Ports Authority

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Areas of application Wirth pile top drill rigs

Areas of application Wirth pile top drill rigs by MHWirth 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: ¡ Superstructures and buildings ¡ Drilling platforms, barges and jack-ups ¡ Harbours, jetties, dry docks and dolphins ¡ Bridges, piers and causeways ¡ Marine sewerage diffusers ¡ Offshore wind farms ¡ Dam rehabilitation

USA/New Jersey – widening of Driscoll Bridge Wirth 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

Hong Kong – Sunley Wirth PBA 936/3 000/300 Ventilation 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

The Wirth PBA with the high torque power swivel is the ideal machine for hard rock drilling, applying the following special methods: ¡ Pile rock socketing ¡ Hard rock drilling ¡ Anchor drilling ¡ Secant wall ¡ Overreaming ¡ Bell-out of the rock socket

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Benefits to you Wirth pile top drill rigs

We drill through hard rock deeper and faster – benefits to you Close consultation and support Our 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. MHWirth’ drilling experts are available for commissioning and for training personnel.

Outstanding drilling performance In each class, Wirth PBAs have an excellent power/weight ratio. Maximum drilling performance is guaranteed, even under the toughest conditions, along with easy and fast equipment handling.

Economical RC drilling MHWirth 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, MHWirth 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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Rig arrangement Wirth pile top drill rigs

Rig arrangement

Pile top drill rig

Auxiliary crane

Tiltable working platform

Drill-pipe chute (optional)

Clamping device

Mud tank system Backfilling system

Hydraulic power pack

Crane for handling of drill rig/drill string Compressor Drill string with bottom hole assembly (BHA)

Close loop circulation

Environmentally friendly closed loop circulation (CLC) 1

Water from a tank fills the borehole

2

Water and cuttings are flushed out by RC through the drill pipe into the tank

3

Cuttings are settling out in the tank

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Clean water fills the hole as per step 1

No spillage, no environmental pollution.

B0080706 I0011689

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Experts at your disposal Wirth pile top drill rigs

Experts at your disposal

Drill string ¡ Modular design for every depth and diameter ¡ Components are built for long life and rough use

Drill pipe stabilizer

Our experienced experts provide comprehensive advice – as early as the pre-project phase. This includes the indication of expected drilling rates and cutter lifetime as well as recommendations for the supporting equipment to ensure the successful operation of a Wirth PBA.

Flanged air-lift drill pipes

Cross-over sub

BHA stabilizers

Air-lift drill collars

Large-diameter rock bit

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References Wirth 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.

China/Hong Kong – Stonecutters Bridge Wirth 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.

UK/West Coast – Burbo windfarm Pile foundation for three MW wind turbines, with a drilling diameter of 4.5 m and depths of up to 60 m

Australia – North West Shelf Wirth PBA 936/3 000/300 for foundation of the Angel oil and gas platform. Drilling diameter of 3.0 m and a drill string length of up to 110 m

© Woodside Energy Ltd.

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References Wirth pile top drill rigs

References

USA/California – Carquinez Bridge Wirth PBA 928/3 000/300 for the bridge foundation with piles of diameter 2.7 m (enlarged to 3.3 m, in part)

USA/California – San Francisco – Oakland Bay Bridge Wirth PBA 933/3 000/300 for the reinforcement of the San Francisco Bay Bridge

Canada/Saint John – Canaport LNG terminal Wirth PBA 612 for foundation of 60 piles, each with a diameter of 1.12 m and a depth of 80 m

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References Wirth pile top drill rigs

USA/Alabama – W.F. Lake George Dam Cut-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 Dam Wirth 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

© TREVIICOS

Bahrain – Saudia Arabia Causeway A 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

© Walter Bibikow/JAI/Corbis

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Reverse circulation drilling Wirth pile top drill rigs

Highest efficiency with reverse circulation drilling MHWirth is the world market leader in reverse circulation drilling (RCD). This method sets the standards for cost effectiveness and versatility.

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.

Due to the higher density in the outer column, the solids pass from the drill hole through the cuttinghead 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.

Principle of operation: Compressed air is injected into the drill pipe below water level and just above The differential pressure and thus the conveying the cutting head. As the air rises and expands within the drill pipe, the density in the internal liquid capacity depend on the rate and volume of the compressed air injected, the depth of injection and column is greatly reduced, leading to a difference the delivery head. in pressure between the liquid in the drill hole outside and the liquid inside the drill pipe.

Airlift swivel

Power swivel or rotary table Compressed air from compressor Discharge hose Standpipe

Muck Mud pit

Airlift drill pipe

Compressed-air inlet valve

Rock bit

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Technical data Wirth 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 m 51 in 4.3 ft

2.0 m 79 in 6.6 ft

2.5 m 98 in 8.2 ft

3.2 m 126 in 10.5 ft

Maximum power swivel torque

81 kNm 59 700 ft lb

120 kNm 88 500 ft lb

180 kNm 132 500 ft lb

360 kNm 269 000 ft lb

500 kNm 368 500 ft lb

Maximum drilling speed infinitely variable

38 rpm

34 rpm

30 rpm

20 rpm

20 rpm

Maximum drill string weight

40 t

45 t

90 t

120 t

240 t

Maximum thrust force

400 kN 90 000 lb

588 kN 132 000 lb

800 kN 180 000 lb

1 000 kN 225 000 lb

1 450 kN 320 000 lb

Maximum pull back

600 kN 135 000 lb

650 kN 145 000 lb

1 100 kN 247 000 lb

1 700 kN 380 000 lb

3 000 kN 675 000 lb

Hydraulic power pack rating

162 kW 220 hp

261 kW 350 hp

261 kW 350 hp

447 kW 600 hp

470 kW 630 hp

Unit weight drill rig

17.0 t

19.5 t

27.0 t

33.0 t

64.0 t

Unit weight hydraulic power pack

4.0 t

6.5 t

6.5 t

10.0 t

11.0 t

Unit weight hydraulic clamping device

3.0 t

7.0 t

9.0 t

12.5 t

Dependent on diameter

200 mm 7.87 in 3m 118 in 9.8 ft

200 / 300 mm 7.87/11.80 in

300 mm 11.80 in

300 mm (HT) 11.80 in

330 mm (HT) 13.0 in

3m 118 in 9.8 ft

3m 118 in 9.8 ft

3m 118 in 9.8 ft

3m 118 in 9.8 ft

275 / 540 kg 606 / 1 190 lb

540 kg 1 190 lb

540 kg 1 190 lb

678 kg 1 495 lb

6m 236 in 19.7 ft

Drill pipe data NW (internal diameter) Maximum length per rod

Weight per rod

275 kg 606 lb

BHA stabilizer / Drill collar data Standard flange diameter BHA stabiliser and drill collar

500 mm 20.0 in

700 mm 27.6 in

1 000 mm 39.4 in

1 400 mm 55.1 in

1 400 mm 55.1 in

Standard length BHA stabiliser and drill collar

1.5 m 59.0 in 4.9 ft

1.5 m 59.0 in 4.9 ft

1.5 m 59.0 in 4.9 ft

2.0 m 78.7 in 6.6 ft

2.0 m 78.7 in 6.6 ft

Weight without lead filling (drill collar only)

700 kg 1 540 lb

900 kg 1 980 lb

1 620 kg 3 570 lb

3 780 kg 8 335 lb

3 780 kg 8 335 lb

Weight with lead filling (drill collar only)

2 000 kg 4 400 lb

3 160 kg 7 000 lb

6 620 kg 14 600 lb

31 400 kg 69 225 lb

31 400 kg 69 225 lb

Delivered air volume

10 – 15 m3 / min 353 – 529 ft3 /  min

10 – 25 m3 / min 353 – 882 ft3 /  min

20 – 25 m3 / min 705 – 882 ft3 /  min

20 – 25 m3 / min 705 – 882 ft3 /  min

2 x  25 m3 / min 2 x  882 ft3 /  min

Operating pressure

13 bar 188 psi

13 bar 188 psi

17 bar 246 psi

20 bar 290 psi

20 bar 290 psi

Delivery volume

800 m3 / h 470 ft3 / min

800 / 1 200 m3/ h 470 / 706 ft3/ min

1 200 m3 / h 706 ft3 / min

1 400 m3 / h 824 ft3 / min

> 2 500 m3 / h > 1 470 ft3 / min

Pressure at delivery head (approximately)

5 bar 72 psi

5 bar 72 psi

5 bar 72 psi

5 bar 72 psi

5 bar 72 psi

Air compressor

Back filling pump for airlift circulation system

Specifications subject to change

Contact South America Rodovia Amaral Peixoto, km 162-ZEN CEP 28890-000, Rio das Ostras, RJ Brazil Tel: +55 31 9249-0093

Australia 96 Raubers Road, Northgate Queensland, 4013 Australia Tel: +61 7 3164-9001

Middle East Lvl 7, Platinum Tower, Cluster I, Jumeriah Lakes Towers PO Box 392815 Dubai UAE Tel: +971 4 550 6200

India Powergas House, I-Think Techno Campus, Beta Building, 4th Floor, Zone-3 Kanjurmarg (East) -400 042 Mumbai India Tel: +91 22 67 06 64 41

51000236.8-1114

All other countries Kölner Strasse 71 – 73 41812 Erkelenz Germany Tel: +49 2431 83-0

mhwirth.com