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8/20/2019 Bermingham Drilling Web
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DRILLING SYSTEMS
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Berminghammer is revolutionizing the foundation industrywith its bold and innovative approach to every project.Berminghammer supplies high quality, project specificequipment, serviced by a world-class team of designers,engineers and field personnel. Berminghammer drillingsystems demonstrate the company’s strength in synthesizing
over 100-years of construction experience with innovation andpracticality in equipment design and manufacturing.
Berminghammer drills represent themost ruggedly designed andextensively field-tested all-purpose drills in the foundationindustry. Berminghammerdrills can be used in almost
every type of drillingapplication, from simplydriving an auger to runninga Down-the-Hole-Hammer.There is simply no betterchoice for foundationcontractors than aBerminghammer drill.
The synergy of foundation construction and equipmentexpertise together with talented design engineers placesBermingham in a unique position to assist other foundationcontractors in planning and visualizing foundationconstruction projects. In recent years Bermingham hasprovided contractors with detailed computer models of theirprojects at the planning and bidding stages as well asthroughout production. This allows Bermingham torecommend equipment and procedures, and provideexperienced construction input on site – a service not offeredby other equipment manufacturers.
INTRODUCTION
PROJECT-PLANNINGAND VISUALIZATION
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PRODUCTION DRILLING
In order to maximize the production ratesof a project every effort must be madeto minimize operations required to moveequipment between pile locations. Foroffshore or coastal projects this ofteninvolves the movement of marine
equipment. Moving and relocating marineequipment can be time consuming andcosting. Minimizing these moves by havingversatile drilling equipment results inhigher overall project productivity.
Versatile equipment also enables acontractor to have an alternate courseof action in the drilling challenges.The equipment can be readily relocatedto another pile and returned once thechallenge has been overcome. Thisfeature is essential to completing aproject on time and within budget.
The Berminghammer lead system inconjunction with our hydraulic drills, drillstring, impact hammer and custom rotarybits allow for maximum reach andexecution of drilling, driving and rocksocketing efficiently and seamlessly.
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Reverse Circulation’ drilling involves the supply of air downthrough the drill-string to decrease the ‘effective density’of the water in the center of the drill-string. Operating muchlike an ‘air-lift’, the drilling spoils are carried out of the holethrough this rising column lower-density air/water mixture(see Figure below). Reverse Circulation requires that the
outer annular area of the casing be kept full of water in orderto provide the hydraulic head required to effectively ‘push’ thecentral column of air/water/spoils up and out of the holethrough the central pipe of the drill-string. ReverseCirculation is an effective drilling technique for a wide rangeof hole diameters including very large holes – up to 3-mdiameter and larger. It is also effective for very deep holes,and holes drilled into hard-rock. Another advantage ofReverse Circulation is the ability to control/direct the drilling
spoils by simply directing the discharge pipe to the desiredsite location or even to a dedicated barge (forenvironmentally sensitive, overwater applications). ReverseCirculation can be used in conjunction with rotary drilling bitsas well as Down-the-Hole-Hammer applications. TheBerminghammer Reverse Circulation Drills are particularly
well suited to Down-the-Hole-Hammer applications due to theirsimple, rugged design and construction.
REVERSE CIRCULATION DRILLING
LEGEND
supply air and lubricantreturn air and spoils
DOWN THEHOLE HAMMER
DRILL STRING
REVERSE CIRCULATIONRETURN AIR PATH
REVERSE CIRCULATIONAIR SUPPLY PATH
CASING / PILE
CROSS OVER SUBASSEMBLY
CROSS OVER SUB SEAL
CROSS OVER SUB SPOILSINTAKE OPENING
SHOCK ABSORBERASSEMBLY
DOWN THE HOLEHAMMER
ROCK
BIT
ROTARYDRILL BIT
MULTIPLE STDRILL STRIN
REVERSECIRCULATIONSUPPLY PATH
CASING / PIL
WATER
REVERSECIRCULATIONRETURN AIR-AND SPOILS
SOIL / ROCK
AIR LIFTASSEMBLY
DRILL BIT
WATER ANDSPOILS PATH
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DIRECT CIRCULATION DRILLING
As the name implies, ‘Direct Circulation’ involves the supplyof air and water down through the drill-string, with thedrilling spoils discharging out the top of the casing. Thismethod of drilling may be better suited to smaller holes andshallow holes, and possibly projects that do not have anyrestrictions on the treatment/containment of the drilling
spoils. When using Direct Circulation with a Down-the-Hole-Hammer, there is no need for a ‘cross-over-sub’ with seal.Direct Circulation also eliminates the need to maintain a
minimum head of water in the casing. This may make DirectCirculation more attractive for a drill-and-drive method ofadvancing the drill casing. Berminghammer drills are wellsuited to either Reverse Circulation or Direct Circulationdrilling.
ROTARYDRILL BIT
DRILL STRING
DIRECT CIRCULATRETURN AIR PATHSPOILS
DIRECT CIRCULATAIR SUPPLY PATH
CASING / PILE
WATER OR AIR
SOIL / ROCK
DRILL BIT
DOWN THEHOLEHAMMER
DRILL STRING
DIRECT CIRCULATIONRETURN AIR PATH
DIRECT CIRCULATIONAIR SUPPLY PATH
CASING / PILE
SHOCK ABSORBERASSEMBLY
DOWN THE HOLEHAMMER
SOIL / ROCK
DRILL / HAMMER BIT
LEGEND
supply air and lubricantreturn air and spoils
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VERSATILITY IN LEADER STYLELEAD-MOUNTED DRILL RIGS ON CRAWLER CRANE
For use on land or over-water, combining aBerminghammer Drill with a Berminghammer VerticalTravel Lead (VTL) offers the most versatility. Movementfrom hole-to-hole will occur more quickly with this leader
system than with any other drilling system and canoperate on vertical or battered piles. The versatility ofthe leader system can allow for multiple insertions fromone crane/barge location. On one project, aBerminghammer VTL System and a BHD-40 drill out-performed a dedicated ‘drilling-rig’ by 5 to 1.Bermingham personnel specialize in the rig-up and rig-down of our VTL Systems and we have the ability toconnect our systems to virtually any make of crane. AVTL System has the advantage of being able to ‘activate’the weight of the leader and attachments as additional
‘crowd’ for the drilling.
SUSPENDED LEAD/SELF SUPPORTED
In some overwater applications an underhung leader anddrill might be the best choice. If the supporting cranedoes not have adequate capacity to support a VTLSystem, or if the required drilling equipment is veryheavy then an underhung system may be the mosteconomical. Berminghammer leads rigged as underhungleads come equipped with hydraulic gates that can ‘grab’
the casing to maintain the underhung lead is a suitableposition for drilling. Applying ‘crowd’ in this type of leadsystem requires a hydraulic-crowd attachment to bepositioned above (or below) the drill, and uses a pin-connection to the leader to apply crowd. Berminghamhave performed many projects where our hydraulic-crowdsystem has been used effectively.
PILE-TOP RIG
Pile-top rigs are the more traditional type of equipmentused in Reverse Circulation drilling applications. Althoughwe typically recommend either a VTL System or anunderhung lead system, there are still some instanceswhere a pile-top rig may be appropriate. Berminghamhave used Pile Top Reverse Circulation Drilling rigs formore than 40-years and can assist customers inselecting the most appropriate system for their project.
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DRILL SYSTEM SPECIFICATIONS
Mark l BHD-30 BHD-40 BHD-60 BHD-80 BHD-90
TorqueN•m 10,800 40,700 54,000 81,300 108,000 122,00
ft• lbs 8,000 30,000 40,000 60,000 80,000 90,000
Maximum RPM 32 30 20 60 40 20Rotation Bi-Directional
Weight kg 907 4,620 4,620 5,340 5,340 9,500
lbs 2,000 10,200 10,200 11,800 11,800 20,900
Main Shaftmm
Solid178
Hollow178
Hollow178
Hollow178
Hollow229
Holin 7 7 7 7 9
Output Connectionmm 95 AF SQ. 8 Bolt 553 mm
in 3 3/4 Drive 8 Bolt on 21”
Max. Diameter mm 914 1,219 1,219 1,219 1,219 2,438
in 36 48 48 72 72 96
POWER PACK
EnginekW 110 148 149 298 298 298
hp 147 200 200 400 400 400
Electrical System 12 Volt
Controls Hydraulic Remote Control
Operating pressurebar 138 331 331 345 345 345
psi 3,200 4,800 4,800 5,000 5,000 5,000
Flowlpm 303 303 303 530 530 530
gpm 80 80 80 140 140 140
Resevoir Capacitylitre 227 968 968 1,743 1,743 1,743
gal 60 250 250 450 450 450
Oil Cooler Included
Weight kg 1,800 3,400 3,400 8,100 8,100 8,100lbs 4,000 7,500 7,500 18,000 18,000 18,000
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Tel: +1.905.528.04Fax: + 1.905.528.61Toll-Free: +1.800.668.9
(Canada & UE-Mail: info@berminghammeWeb: www.berminghamm
Berminghammer Foundation Equipment and Bermingham Foundation Solutions are divisions o
Bermingham Construction Limited.
Copyright ©2008 Bermingham Construction Limite
Wellington Street Marine TerminHamilton Ontario, Canada L8L 4
APPLICATIONS AND ACCESSORIESOPERATIONS
Pre-boring Pile LocationsCaisson AugeringWet Rotary DrillingTie BacksRock SocketsGrout Injection
ATTACHMENTS
Continuous Flight AugersShort AugersFish Tail or Water Jetting BitsSmall Diameter BitsTricone Rotary bits, Core BarrelsHollow Stem Drill Sting