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Year XIII n.3 | July-September 2018
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Poste Italiane S.p.A. – Spedizione in Abbonamento Postale – D.L. 353/2003 (conv. in L. 27/02/2004 n. 46) art. 1, comma 1 CN/FC/AUT.0025
Preview Geofluid • Soilmec • Beretta • Marini • SIP&T
Piacenza, Italy
Geofluid 2018
From October 3rd to 6th the world of drilling, special foundations and geotechnics will meet in Piacenza. This year Geofluid celebrates its first 40 years, with over 30,000 square meters - indoor and outdoor - of the exhibition center “Le Mose”
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Contents Poste Italiane S.p.A. – Spedizione in Abbonamento Postale – D.L. 353/2003 (conv. in L. 27/02/2004 n. 46) art. 1, comma 1 CN/FC/AUT.0025
Editor in chief Manuela Cortesi – manuela.cortesi@scimedia.it Contributors John Melegatti, Marianna Senni, Miriam Spada
Subscriptions Italia: € 36,00 Other countries: € 60,00
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Preview Geofluid • Soilmec • Beretta • Marini • SIP&T
Publisher Emanuele Giovannini – emanuele.giovannini@scimedia.it
Administration office Tel. 0542 22601 - E-mail: info@scimedia.it
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Year XIII n. 3 | July-September 2018
Year XIII n.3 | July-September 2018
ON COVER > Beretta
Piacenza, Italy
News > Short Stories
p. 2
Geofluid 2018 000_COVER_PF_ENG.indd 1
From October 3rd to 6th the world of drilling, special foundations and geotechnics will meet in Piacenza. This year Geofluid celebrates its first 40 years, with over 30,000 square meters - indoor and outdoor - of the exhibition center “Le Mose”
16/09/18 10:43
Subscriptions office Tel. 0542 22601 - E-mail: abbonamenti@scimedia.it Print GRAFICHE MDM - Forlì Advertising Concessionaria pubblicità (Italia-Estero) AD COMMUNICATION Via E. Fermi, 6 - 20027 Rescaldina (MI) Tel./Fax +39.0331.1462600 Anna De Bortoli – mob. +39 348 9691420 annadebortoli@ad-communication.it Davide Ferrati – mob +39 331 5218050 d.ferrati@ad-communication.it Responsibility The reproduction of any illustration and article published on PF, translations included, is reserved and strictly forbidden without a written authorization by SCI media publishing company. Texts and photos provided to the company, in any form, won’t, in any case, be returned to the owners. SCI media does not take on responsibilities of the abovementioned materials, even in case of unique samples, nor about the presence of errors in the printed articles. Editorial materials received by SCI media without prior agreements are to be considered for free even if published. Names and brands are mentioned without responsibility, only for information’s sake, and just to provide a service to readers. Frequency 4 issues/year, 3 of which partially in English langague Shipping Poste Italiane S.p.A. – Spedizione in Abbonamento Postale – D.L. 353/2003 (conv. in L. 27/02/2004 n. 46) art. 1, comma 1, CN/FC/AUT.0025 Registration Authorization Court of Ravenna n. 1286, October 25th 2006 ROC subscription: 29737
PF - Rivista Italiana delle Perforazioni e Fondazioni SCI media srl Via Camillo Benso Conte di Cavour, 62 40026 Imola (BO) - Italia P. IVA 03618411205 - R.E.A. BO-533436 Tel. +39 0542 22601 - E-mail: info@scimedia.it www.scimag.news Per le immagini pubblicate si resta a disposizione degli aventi diritto che non si siano potuti reperire
Preview Geofluid > Beretta
Pick the right idea & make it real John Melegatti p. 6
focus on Preview Geofluid > Soilmec
Very deep jet grouting Miriam Spada
p.14
Preview Geofluid > Marini Quarries Group
News from Marini Miriam Spada
p. 10
Preview Geofluid > SIP&T
PRA-S line: new generation rock auger John Melegatti
p.18
News > Short Stories Maersk Drilling
Maersk Drilling and Aker BP sign major contract founded on joint alliance Maersk Drilling and Aker BP have agreed to a one-year contract to deploy highperformance rig Maersk Integrator on the Norwegian shelf from June 2019. The contract is founded on the alliance that the parties entered into in 2017 The Maersk Integrator will become the first rig to be contracted fully under the scope of the alliance between Aker BP, Maersk Drilling and Halliburton. When the high-performance jack-up rig finishes its current campaign on Gina Krog in June 2019, it will go directly to Ula for a new one-year assignment with Aker BP. The tripartite alliance was announced last year and focuses on working in collaborative relationships which maximise value for all parties involved. This is established in contracts using a shared incentives model, thereby securing mutual commitment to reduce waste and deliver value. The contracts are based on market-rate terms but add the possibility of a sizeable upside for all parties, based on actual delivery and performance.
“This contract really symbolises the close working relationship between Aker BP and Maersk Drilling that we established in late 2017. This is the first contract fully founded on our alliance framework. With shared incentives, all parties will work as one team towards delivering safe and efficient operations at the lowest possible well cost,” says Jørn Madsen, CEO of Maersk Drilling. In the tripartite jack-up alliance, the parties are exploring new ways of collaborating to increase the efficiency of drilling campaigns. In addition to setting up shared goals and incentives, it includes integrated project organisations, aligned safety procedures, and a one-team mindset guided by the principles of ‘best man for the job’ and ‘best for the alliance’.
Maersk Integrator is an XL Enhanced ultra-harsh environment jack-up rig that is customised for the North Sea. The rig is currently stationed at the Gina Krog field on the Norwegian shelf where it has been engaged in its firstever drilling campaign since June 2015. When that campaign finishes in June 2019, the rig will move south to the Ula field to deploy for Aker BP. As an integral part of the alliance framework, Halliburton will function as service provider for the new campaign. “With this contract, we will truly see the value of our alliance as we work together to reduce waste and lower the cost per barrel on Ula. The collaboration between our companies is under continuous development due to the alliance, and we expect to gain more and more mutual benefits from working together in new and innovative ways,” says Tommy Sigmundstad, SVP Drilling and Wells at Aker BP. Maersk Drilling, Aker BP and Halliburton entered the joint jack-up alliance in November 2017. The alliance aims at lowering the cost per barrel and increasing profitability for the partners through implementation of digital solutions, increased collaboration efficiency, and standardisation and simplification of processes. It is formalised in a five-year agreement with the option to extend for an additional five years. With this contract, Maersk Drilling has added a total of 2,373 days and USD 313m to its backlog in 2018.
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EXTERNAL AREA - STAND H4
News > Short Stories
SANDVIK
Sandvik acquires Inrock, a leading rock drilling tools supplier Sandvik acquires privately-owned Inrock, a leading supplier of rock drilling tools and services for Horizontal Directional Drilling (HDD) in North America. Headquartered in Houston, USA, Inrock is a market leader in pilot hole bits, reamers, guidance systems, accessories and services for the premium maxi rig segment within HDD. “In line with our strategy, this demonstrates how we gear up for growth organically and through acquisitions in areas where we are stable and profitable, aiming for world-leading market positions. I welcome Inrock to our Group”, says Björn Rosengren, CEO and President of Sandvik.
The combined expertise of Sandvik Mining and Rock Technology and Inrock will support further development of the HDD product portfolio to customers operating and servicing infrastructure applications such as oil and gas pipelines, water and sewer, telecommunications, electricity and alternative energy production and storage. This includes expanding into the midi rig segment, accelerating the global footprint of the business but also realizing synergies within production. “I am pleased to see that we leverage our materials knowledge and supply infrastructure to drive growth in the consumables and service business,
since it is important in maintaining and improving our relationship with customers, as well as adding longterm stability to our earnings”, says Henrik Ager Head of product area Rock Tools. In 2017 Inrock had revenues of 46 million USD and 70 employees. Impact on earnings per share will initially be neutral to slightly positive. Parties have agreed not to disclose the purchase price. The transaction was closed today and as of the third quarter 2018 Inrock will be reported as part of the product area Rock Tools within business area Sandvik Mining and Rock Technology.
XCMG
Self-made chassis rotary drilling rig with the largest tonnage exported by China XCMG XR460D Assists Zijing No.1 Project in Phnom Penh XCMG XR460D, a self-made chassis rotary drilling rig with the largest tonnage exported by China, is used to orderly build the pile for Zijing No.1 Mansion in the buildings and bushes beside Mekong River in Phnom Penh, Cambodia. With self-made track telescopic chassis and large triangle variable amplitude mechanism, XCMG XR460D is characterized with ultra-strong stability; main winch is provided with single-row rope, so as to greatly improve service life of steel wire rope. Engineering pile foundation of Zijing No.1 Mansion is constructed by using XCMG XR460D, so as to achieve
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a pile diameter of 1.2m, a pile depth of more than 70m, rock entering of above 20m, and average pore forming time of only 10 hours, which gets unanimous praise from the project department by virtue of high construction efficiency. At present, several sets of XCMG rotary drilling rigs with large tonnage are used for construction in Cambodia. Occasion of falling on the 60th anniversary for establishment of diplomatic relations between China and Cambodia, XR460D, bearing a better wish of XCMG for the world and with excellent product performance, is fully
used for infrastructure construction in Cambodia.
Preview Geofluid > Beretta
Beretta at GEOFLUID Pav. 1, Aisle C-D Stand 194-197
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T209
The new kinematic patented 210° (105°+105°).
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Pick the right idea & make it real Beretta is going to bring to the drilling field many innovations John Melegatti
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hat better occasion, than a specific exhibition for drilling equipment like Geofluid in Piacenza, to show to the drilling world the latest products? The historic Beretta staff, which has been recently joined by young, dynamic, qualified engineers to form a perfect mix, is waiting for you at the booth placed in the traditional position (entrance of Pad.1 between the corridors C-D). The company Beretta Alfredo, which is well known for its versatility, creativity and attention to the development, is going to bring excellent innovations in both foundation and geotechnics. T48 and T209 have been shown in preview in Intermat in Paris last April and they are going to be definitely launched in Geofluid. Both drilling rigs, born according to different needs, have the same aim: offer to the end user the ideal conditions in terms of reliability, efficiency and quality.
T48
T209 at Intermat
Will be definitely launched at Geofluid
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Preview Geofluid > Beretta
T48 is simply unique. It has been designed to get a rig with high performances in the body of a machine of small/medium sizes. T48 is kind of like Dr. Jekyll & Mr. Hide: the linear and geometric hood with a cubic shape, gives way to an extrovert kinematic provided by three hydraulic bearings (2 of them can slide on a plate) and one hydraulic cylinder (in addition to the one of the countermast) that allow to place the mast practically in every direction. The crawler is characterized by a variable opening 1000-1400 mm, the rotary head can be chosen with 2 or 4 speeds, in order to get over 2.000 daNm torque (14.751 lb ft). The possibility to have as optional an upgrade of the rig (bigger crawler and mast with 6,5 ton pull-up) and the possibility to equip the machine with a telescopic mast, put the customer in the position to be spoiled for choice! T209 is going instead to complete the Beretta production portfolio with the
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T35-E
T41
introduction of a size which has never been realized before: we are speaking about 25 - 28 ton (55.116 – 61.730 lbs) of weight! The purpose of this project “made in Brianza” is to offer to the end user a drilling rig that respect to the equivalent ones of other manufacturers has higher technical specifications, probably unique. The innovative kinematic, which has been recently patented, allows to realize the front the wall drilling rotating the mast until 210° (105°+105°). The safety cage is the result of a brilliant idea: use two hydraulic motors operated directly from the remote control that rotate the cage along an ideal circumference around the mast; in this way the cage can be opened and closed avoiding the presence of the operator near the safety system. The offer on rotary heads, as is tradition, includes a wide range: 2-4-6-8 speeds, double rotary head (compact or separated), everything obviously “made in Beretta”! The major innovation is on two kinds of new rotary heads: RB5000, provid-
ed by over 5.000 daNm torque (36.878 lb ft) and RB3000 (over 3.000 daNm torque – 22.127 lb ft). Both heads are available in an ideal configuration with double rotary head with unique performances! These State-of-the-Art rotaries are the result of a thorough study: the pressure drop, which is practically zero allows to get the above indicated performances using a very low fuel consumption! You may have never seen this before! If you think that T48 and T209 are the only news that Beretta is going to bring to Geofluid 2018, you are on the wrong way: a completely new line for geotechnics and water wells (GT Series) is going to be launched. It’s really looking like the visit to the Beretta booth is not for the faint of heart! The new models of this line can range from the smallest GT20 with 48 HP engine (Stage 3, 4 o 5, everything you may require!) to the biggest GT90 (154 HP) going through every mid-term size. The idea is to have a choice for every need of the final user. All the drill-
T46/S2
ing rigs of the GT series are provided by an innovative electro-hydraulic drilling panel, which is the achievement of a perfect mix between precision and reliability, accompanied by a high comfort during use. “An imitation may be quite successful in its own way, but imitation can never be Success. Success is a firsthand creation”. We can say that the new face of Beretta in 2018 is perfectly summed up in this famous quote of the popular industrial entrepreneur Henry Ford.◀
INFO Beretta Alfredo srl Via Giuseppe Parini 24/26 20842 Besana In Brianza (MB) Italy Email: info@berettaalfredo.it Telefono: +39 0362 99.53.80 Web: www.berettaalfredo.it
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Preview Geofluid > Marini Quarries Group
News from Marini Among the crawler machines of the Marini Quarries Group, the small and exquisite MR-C 35 is flanked by a great innovation: the MR-C 35A John Melegatti
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MR-C 35
Marini at GEOFLUID Pav. 1 Aisle A-B, Stand 50 and External area, Aisle F, Stand 11
ceived with robustness on one hand, and practicality of use on the other hand: these are both crucial requirements in a sector where the needs of the customers are always more stringent. An impeccable production line, precise control over raw materials, a support service always at its best: this is how the Marini Quarries Group manages to be ahead of the curve, creating a product that leaves consumers satisfied time after time.
Products for drilling
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mong the Piedmont mountains, at the Marini Quarries Group, creativity and technological challenge are elements that are combined to create machines that are valued throughout the world of drilling. At the headquarters in Villadossola, the design and construction of the new machines are worked out, con-
Marini Quarries Group designs and manufactures machines for civil engineering applications which, due to their common characteristic and prerogative of design, are compact, light, versatile and ergonomic, able to adapt to the most varied work requirements. The scope concerns the consolidation operations, micropiles, anchorage, installation of rock barriers and avalanche barriers The Marini Quarries Group machines for civil engineering are ideal for work in urban settings, motorway networks, railways and civil defence.
A look at the lines ▶▶ MR LINE Light pneumatic/hydraulic drilling units for acrobatic works of consolidation, anchors, riveting, scaling, etc... ▶▶ MR-A LINE Pneumatic/hydraulic drilling mast applicable on different self-propelled sizes. ▶▶ MR-C LINE Crawler drilling machines suitable for the most extensive specialised civil engineering operations. ▶▶ MR-S LINE Pneumatic/hydraulic perforation slides, light and applicable on various structures such as scaffolding, self-propelled... ▶▶ DRIFTERS Wide range of separate roto-percussion pneumatic/hydraulic hammers used on Marini machines. ▶▶ ROTARY HEADS Wide range of pneumatic/hydraulic rotary heads that can be used on Marini machines. ▶▶ POWER PACKS Wide range of hydraulic power packs that can be used on Marini machines.
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Preview Geofluid > Marini Quarries Group
MR-C LINE In particular, the MR-C LINE provides for a series of hydraulic crawler drilling machines for core drilling, anchorage and consolidation with self-drilling rods and with down the hole hammers. These are crawler drilling machines suitable for the most specialised civil engineering operations.
A small force of technology: the MR-C 35 MR-C 35 is a small crawler drilling machine (weight: ~6000/6500 kg ~13227/14330 lbs), with separable hydraulic power unit, optimised for all civil engineering work, coring, micropiles, anchoring and consolidation works. Suitable for work in tight spaces that are difficult to access, it is equipped with a hydraulic power pack capable of delivering 56 Hp / 75 Hp to operate any type of hydraulic drifter or down the hole hammer and perform any type of drilling.
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MR-C 35 UNDERCARRIAGE Wheel base Track width Pad width Max. climbing ability Max. speed POWER PACK Engine MAST Feed force Retract force ROTARY HEAD
1570 mm (5.15 ft) 1700 (5.57 ft) optional 1200/1700 mm (3.94/5.57 ft) 300 mm (0.98 ft) 80% 2 Km/h (1.25 mph) Diesel engine Lombardini KDI 1903 TCR Lombardini KDI 2504 TCR CID 120 CID 200 2000 daN / 4496 lbf 4000 daN / 8800 lbf 2500 daN / 5620 lbf 4000 daN / 8800 lbf ID 500 ID 800
Max. torque
500/250 daNm (3688/1844 lbft)
950/475/237 daNm (7007/3503/1748 lbft)
Max. speed ROCK DRILL
40/80 rpm MA 100 ID
43/85/170 rpm MA 500 / 2 ID
Max. torque
100 daNm / 737 lbft
500/250 daNm (3688/1844 lbft )
Max. speed Impact energy Impact frequency HYDRAULIC WINCH Max. pull
100 rpm 150 Nm / 110 ft lbf 3200 cpm Mod: 500 500 daNm / 1124 lbf
40/80 rpm 320 Nm / 237 ft lbf 2100 ÷ 2300 cpm Mod: 1000 1000 daNm / 2200 lb ft
speciale
MR-C 35A
The latest has arrived: MR-C 35A MR-C 35A is a small mobile radio command drilling unit (weight: ~6000 Kg - ~13227 lbs), with separable hydraulic power pack and mast, optimised for all civil engineering work, coring, micropiles, anchoring and consolidations. Suitable for work in tight spaces
that are difficult to access, it is equipped with a single articulation arm (2 joints) and a quick coupling/release system for the Mast for use on excavators over 14 tons, with a hydraulic power unit capable of delivering 56 Hp / 75 Hp to operate any type of hydraulic drifter or
MR-C 35A UNDERCARRIAGE Wheel base Track width Pad width Max. climbing ability Max. speed
1570 mm (5.15 ft) 1700 (5.57 ft) optional 1200 / 1700 mm (3.94/5.57 ft) 300 mm (0.98 ft) 80% 2 Km/h (1.25 mph)
POWER PACK
Diesel engine
Engine
Lombardini KDI 1903 TCR
MAST
CID 120
Feed force Retract force
2000 daN / 4496 lbf 2500 daN / 5620 lbf
ROTARY HEAD
ID 500
Max. torque Max. speed
500/250 daNm (3688/1844 lbft) 40/80 rpm
ROCK DRILL
MA 500 / 2 ID
Max. torque Max. speed Impact energy Impact frequency
500/250 daNm (3688/1844 lbft) 40/80 rpm 320 Nm / 237 ft lbf 2100 ÷ 2300 cpm
HYDRAULIC WINCH Mod: 500 Max. pull
500 daNm / 1124 lbf
Lombardini KDI 2504 TCR
down the hole hammer and perform any type of drilling. Like all Marini machines, the MR-C 35A can be customised according to different needs. The MR-C 35A machine has a special feature: the drilling slide can be detached from the crawler truck and installed on an excavator, and the unit in both cases is controlled by the same radio command. This type of machine is particularly suitable for companies that deal with different types of work, or companies that deal with equipment rental. Purchasing a MR-C 35A means getting hold of an absolute “multitasking” machine, accessible on a limited budget. Seeing is believing.◀
INFO Marini Quarries Group Via Beura, 44 28844 Villadossola Verbano-Cusio-Ossola (VB) - Italy Tel. +39 0324 575106 www.mariniqg.it
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Preview Geofluid > Soilmec
Soilmec at GEOFLUID External area, Aisle G, Stand 9
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Very deep jet grouting More flexibility, more performance, ease-of-maintenance and a better environmental impact, these are the key points of the new restyling of the Soilmec SM-22 John Melegatti
T
he Soilmec SM-22 is an evolution of the historic PSM1350 and SM-20 models that overall have sold more than 300 units worldwide, and have been completely redesigned to ensure high efficiency and productivity levels on site together with the highest safety standards. Thanks to its modular design it can be easily configured in different single rotary fittings, double rotary, top-hammer and vibro-rotary to carry out consolidation, micropiles and anchors with different drilling technologies, direct circulation, reverse circulation, DTH, CFA, jet grouting. With an operating weight of 22 tons the rig is assembled on steel crawler track complete with 2 rear outriggers and 2 extendable hydraulic front stabilizer pads to give an increased stability on any soil formation. It is powered by a Cummins CUMMINS QSB6.7 that delivers 194 kW at 2200 rpm, while ensur-
ing at the same time a low environmental impact due to reduced noise, fuel consumption and emissions. In order to improve the Soilmec “green target� the technical department have designed a new type of sound proofed openable canopies giving further noise reduction and located the
Diesel Engine on the rear side of the chassis to easy maintenance. The machine is fitted with proportional, hydraulic servo-assisted controls so that drilling and positioning operations become easy, precise and smooth. Its particular kinematic mechanism composed by a swiveling
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Preview Geofluid > Soilmec
SM-22
It is powered by a Cummins CUMMINS QSB6.7 that delivers 194 kW at 2200 rpm
boom on a slewing ring driven by two cylinders and a new articulated joint 90° without pins removal allowing the operator to work in parallel to the undercarriage tracks in total safety. In order to guarantee the maximum safety for operators and the maximum handiness of operations, SM-22 can be ordered equipped with radio remote control or with hydraulic/proportional panel on pivotal support arm for all the drilling operations and a wired remote control for tramming. Moreover the base machine is fitted with a fixed control board that display consumption of Diesel engine, rotary rotation speed, working pressure and temperatures of oil & water. The machine equipped with Jet-Grouting version meets the highest application performance for this model. Jet-Grouting technique consists of disaggregating the soil and mixing it with cement admixtures by means of high pressure jets, this technique have been used in a wide range of soils and for several application as: underpinning, cut-off, bottom plugs. Deep columns in single pass means better production and a high quality of treatment so it is very important for a rig to be able to reach high depth in a single step. The SM-22 in jet grouting version features a monolithic mast,
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rotary head with a maximum torque of 3660 daNm mounted on cradle with 600 mm side shifting actuated by hydraulic cylinder. The rig can be supply by Soilmec along with the entire job-site installation for a jet-grouting project: the high pressure jetting pump, the mixing plant for the grout and all the necessary ancillaries like additional pumps , rods ,monitors and pipings.â—€
10200 mm stroke, that can be fitted with a boom extension to reach a jetting treatment depth of 27 m in single pass. The boom lattice extension is composed by two framework elements, 11 m and 7 m long, complete with flexible hoses kit, cradle for swivel, cradle for rod guide and electric
equipment. Moreover the machine can be set up with rod loader actued by hydraulic arm that allows to load two rods 9 m long in total safety to reach the very important depth of 45 m. To drive the drill string the SM-22 is equipped with variable displacement
INFO Soilmec S.p.A. Via Dismano, 5819 47522 Cesena (FC) - Italia Tel: +39 0547 319111 www.soilmec.com
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Preview Geofluid > SIP&T
PRA-S line: new generation rock auger The new rotary drilling tool developed by SIP&T represents an innovation in the field of large vertical piling. It is a new generation auger, completely re-designed and manufactured in order to offer higher drilling performance in very hard rock strata John Melegatti
S
ince 1991 the purpose of SIP&T has always been to manufacture a wide range of rotary tools with highest level of reliability and performance in the field of vertical foundations. The search for high performance, combined with the search forever better reliability, has always been the real and recognizable philosophy of SIP&T in construction sites around the world. Numerous efforts have been made, over the years, by SIP&T engineers and workers to offer to customers the best power tool suitable to the excavation. This concept combined with the competent advice received from customers and drill operators, together with
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the continuous activity and research of technicians in all type of work on construction sites and in soils around the world, has recently led to the creation of the new range SHD, which means simply SUPER HEAVY DUTY. However, SIP&T believes that drilling is a complex and difficult process where the theoretical knowledge must be reflected in the practice and execution. In order to obtain the best of the new hydraulic innovations installed on the machine and transfer properly to the ground, the company has created a new and complete range of drilling tools and accessories. The SHD Line tools has been introduced as product line with the goal of even better satisfying various re-
SIP&T at GEOFLUID External area, Aisle H, Stand 4
quirements of customers. In details, the line is manufactured accordingly to the different rigs torque and rock hardness. Such line of drilling tools has some basic principles, which are dealt with
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utmost priority, such as quality, high performance, greatest reliability, highest safety levels, lowest maintenance, long lifetime, customized design. Short delivery time can be met even for special tools or components.
Highly flexible production line, experienced technicians pleased to assist clients on site and extensive stocks are prerequisites for this. Client satisfaction is key criteria for all tools and components made by SIP&T.
The flights pitch has been specifically designed to get better output characteristics for the high torque drilling rigs in order to improve material handling
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Preview Geofluid > SIP&T
PRA S Line
Progressive rock auger Special Line in diameter 2850 mm
for SIP&T was: which type of drilling tool should be applied when the rock strength is more than 100 MPa?
PRA-S Line in details Research and development reasons Of the thousands of rotary drilling tools built by SIP&T since production begun in the 1991s with the first Conical Rock Auger, many of these are still in operation all over the world. One of the reasons for this high level of reliability is that SIP&T engineers are firmly in control of the entire process, from design and development to production and comprehensive testing prior to delivery. Perfect matching of drilling rigs, drilling tools and soil conditions is a crucial factor for the success of SIP&T rotary drilling tools. This is why all drilling tools are designed and manufactured within the SIP&T production plans. From choice of materials to compliance with manufacturing quality and permitted tolerances, all individual processes are continuously monitored and documented by the inhouse certified Quality Assurance Department. Many of the ideas, requirements and wishes of the customers are frequently incorporated into the continuous improvement processes. The rotary drilling tools technology represents a world apart; the possibility to transfer the rotary torque through a kelly bar, maybe at 100m depth, to an
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auger able to destroy and collect the rock is a topic to be considerably followed up! The right interpretation of Material Technology Science, the application of many simple mechanical principles and the introduction of Special Technologies for the soil treatment represent the only way to face and solve the ground drilling matters, from soft but cohesive soils (i.e. plastic clay) to very hard and abrasive ones (i.e. granite with compressive rock strength higher than 200 MPa). Rotary drilling tools have been chosen in base of rock strength to be drilled. It should be noted that not only the compressive rock strength (UCS), but also the degree of fractures and number of joints in the rock mass as well as the material’s resistance to tensile, frictional, shear and abrasive forces are also factors that influence both rock drillability and tool durability. One of the most important question
Designed to handle the most difficult drilling conditions, this auger is the evolution of years of drilling experience; it has been studied to work in very hard rock strata having a Compressive Strength more than 100 MPa. The geometry of the chisels arrangement is optimized for reaching excellent cutting performance, the flights pitch has been specifically designed to get better output characteristics for the high torque drilling rigs in order to improve material handling. Auger main features are: ▶▶ High and fast drilling capacity Optimized cutting geometry yields fast drilling rates, due to its flight which increases in diameters progressively and its special chisels and holders, this auger displays excellent ripping characteristics. ▶▶ Low and easy maintenance Replaceable strips in Hardox HB 600 are highly wear resistant while the special setting angle allows the Betek round shank chisels to sharpen themselves as they turn. ▶▶ High operational reliability Quality and design that come with 25 years of experience in the design and production of rotary drilling tools. In conclusion, rock drilling for pil-
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The geometry of the chisels arrangement is optimized for reaching excellent cutting performance. This auger displays excellent ripping characteristics thanks to special chisels and holders made by Betek
ing applications using conventional drill tools is usually limited to rock strengths of 100MPa compressive strength (UCS) or less. The PRA-S Line presents an alternative hard rock drilling method which is suitable to penetrate rock when conventional drill tools become either ineffective or reach refusal. Over the last year, many piling contractors are excavating linear meters of extremely high strength rock in excess of 200MPa compressive strength (UCS) using innovatively designed and built PRA-S Line. This special auger is achieving up to ten times faster production rates than conventional drill tools and up to four times faster production rates than air roller core barrels in similar rock formations and are therefore attractive options for hard rock drilling requirements for bored piles.â—€
Replaceable strips in Hardox HB 600 are highly wear resistant, central stem diameter and its thickness together with spiral thickness and chisels number/ position are decided trough a FEM analysis
INFO SIP&T S.p.A. Via Giovanni Agnelli, 6 - Zona PIP 84081 Baronissi (SA) - Italia Tel: +39 089.9566338 info@sipdrill.it www.sipdrill.it
PF > n. 3 July-September 2018   21