SEWER MAINS AND HOUSE CONNECTIONS BY HDD

Pubblicato il giugno 2, 2016 da Renzo Chirulli

Client: SE.T.A. Srl (today ETRA Spa) – Italy

Year: 2003-2004

What I did: I made the detailed design of the installation of pressure and gravity sewer pipes by directional drilling; I carried on the training of the technical personnel (engineers, supervisors and operators). I developed a dedicated and complete HDD pit launched installation system for the connection of houses to the sewer mains. I also wrote two technical standards: the first for preliminary underground mapping and the second for the construction of house connections by using pit launched HDD machines.

SEWER MAINS AND HOUSE CONNECTIONS BY HDD

longitudinal section of an HDD installation.

Detail of the connection between a concrete shaft and the newly installed culvert.

Pit launched HDD system for the connection of houses to the sewer main.

click on the image to see the index of the standard norm (language: Italian)

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R&D IN HDD AND DETAILED DESIGN OF LARGE RIVER CROSSINGS

Pubblicato il maggio 10, 2016 da Renzo Chirulli

Client: FONDAZIONI SPECIALI Spa, Italy

Year: 2011-2012

What I did: I worked as the head of R&D of the HDD division, having the following charges:

feasibility studies for the application of HDD and microtunneling technologies
R&D for the use of HDD in compensation and jet grouting.
R&D for a non-conventional guidance system for HDD
R&D for hole supporting in up-hill directional drilling
organization and management of the mud laboratory.
training of engineers, supervisors and operators.

I also made the detailed design, performing the role of problem solver during the execution of large river crossing carried out by HDD for the installation of gas pipelines:

PO river, Italy, DN600 (24 in) for a total length of 1.300 m (4,300 ft)
Enza river, Italy, DN100 (4 in) for a total length of 1.200 m (4,000 ft)

R&D IN HDD AND DETAILED DESIGN OF LARGE RIVER CROSSINGS

Enza River crossing, Italy - Pilot bore for the installation of a 4

PO River crossing, Italy - Pull-back stage of a 24

PO River crossing, Italy - End of the pull-back stage of a 24

DEVELOPMENT OF DRY DIRECTIONAL DRILLING TECHNOLOGY

Pubblicato il maggio 5, 2016 da Renzo Chirulli

Client: SE Srl, Italy

Year: 1997-2002

What I did: I collaborated in the development and application of the Dry Directional Drilling technology, being member of the team that developed this technology.

About Dry Directional Drilling technology: DDD is based on the use of compressed air at low pressure (175/360 psi – 12/25 bar) instead of traditional bentonite mud. Down the hole percussive air powered tools have a blow frequency that ranges from 900 to 1.500 blow per minute, which means that they are able to drill, with successful results, any kind of soil and any kind of hard rock banks, even when the rock has a resistance to compression of more than 29,000 psi (200 MPa). The rotating and percussive action exerted by the down-the-hole tool is extremely efficient even in presence of very hard rocks. Moreover, it turns out to be very useful in presence of soft soils, since the percussive action generates a pre-consolidation of the soil, so that it facilitates the drilling and steering stage.

DEVELOPMENT OF DRY DIRECTIONAL DRILLING TECHNOLOGY

Dry Directional Drilling - Down-the-hole air powered hammer with a duck-bill shaped drill bit and an eccentric drill bit

Dry Directional Drilling - the arch effect.

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OPTICAL GUIDANCE SYSTEM FOR HDD & COMPENSATION GROUTING BY HDD

Pubblicato il maggio 5, 2016 da Renzo Chirulli

Client: Revolution Directional Drilling Technology Srl – Italy

Year: 2005-2007

What I did: I developed the idea of a new laser based guidance system for horizontal directional drilling, operating in 2 1/2″ drill string, with a minimum bending radius of 25 m; the system was called ALICE; I developed the algorithm, collaborating to the construction and testing phase of prototypes.

I carried out the feasibility studies for the application of HDD to pre-tunneling compensation grouting and directional underground injections for insulation and treatment.

OPTICAL GUIDANCE SYSTEM FOR HDD & COMPENSATION GROUTING BY HDD

Inserting the first prototype of ALICE laser-based guidance system for HDD in a 2,5 in drill string

Testing stage of ALICE laser-based guidance system for HDD

Feasibility study of the use of HDD for a pre-tunneling compensation grouting.

LAUNCH OF DRY DIRECTIONAL DRILLING TECHNOLOGY IN THE NORTH AMERICAN MARKET

Pubblicato il maggio 2, 2016 da Renzo Chirulli

Client: SE INDUSTRIES Inc., Montreal, QC – Canada

Year: 2000-2002

What I did: I was the General Manager and VP Marketing, Sales and Development of the company. I actively collaborated in the development and application of the Dry Directional Drilling technology, being member of the team that developed this technology. I was the key person for the launch of this technology in the North American market, conceiving and implementing the marketing strategies and managing the relationships with public and private investors interested in this technology.

About Dry Directional Drilling technology: DDD is based on the use of compressed air at low pressure (175/360 psi – 12/25 bar) instead of traditional bentonite mud. Down the hole percussive air powered tools have a blow frequency that ranges from 900 to 1.500 blow per minute, which means that they are able to drill, with successful results, any kind of soil and any kind of rock banks, even when the rock has a resistance to compression of more than 29,000 psi (200 MPa). The rotating and percussive action exerted by the down-the-hole tool is extremely efficient even in presence of very hard rocks. Moreover, it turns out to be very useful in presence of soft soils, since the percussive action generates a pre-consolidation of the soil, so that it facilitates the drilling and steering stage.

SPREADING OF THE DRY DIRECTIONAL DRILLING TECHNOLOGY IN THE NORTH AMERICAN MARKET

Scorpio 903 DDD unit - 24t pullback force

SE Industries stand at the UCT Show 2001 - Houston, TX - USA

Scorpio 903 DDD rig, drilling reinforced concrete blocks, during a demonstration in a trade show Shreveport Louisiana, USA - 2001

Scorpio 250 DDD rig, installing two electrical conduits at the Dorval International Airport - Montreal, QC - Canada - 2001

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28 KM OF URBAN CABLING PROJECT BY HDD

Pubblicato il aprile 24, 2016 da Renzo Chirulli

Client: Hydro Quebec, Montreal, QC – Canada

Year: 2000-2001

What I did: I collaborated on the design of a specialized pit launched drilling rig (the pit-launched 250 Scorpio dry directional drilling rig – with 7 tons of pullback force) and on the detailed design of the installation project of more than 28 km (17 miles) of medium tension electrical cables (3 kV), for the connection of 1.000 houses, in the city of Hampstead, Montreal – QC, Canada. I also carried out the training of the engineers and operators both of the Client (Hydro Quebec) and of the Contractor, and I supervised the work in order to assure the expected productivity.

28 KM OF URBAN CABLING PROJECT BY HDD

Close-up of the general cabling plan of the City of Hampstead

The 3D scheme of the pit launched 250 Scorpio rig (7 tons pullback force)

The pit-launched 250 Scorpio DDD rig in action.

Positioning of the pit-launched 250 Scorpio DDD rig.

Sharp bending radius of the drilling path during an official test, supervised by Hydro Quebec personnel.

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DRILL PIPES FOR DIRECTIONAL DRILLING

Pubblicato il maggio 24, 2013 da Renzo Chirulli

Client: Colli Drill Spa, Rome – ITALY

Year: 1994-2007

What I did: I designed the product (drill pipes) in a wide range of diameters, connection types and lengths, setting-up all the mechanical calculation methods; then I studied the manufacturing process (friction welding, thermo-chemical treatments, post welding heat treatments) and all the control procedures; and finally I designed and supervised the construction of the manufacturing plant. Six year of continuous research, enthusiasm, errors and success, achieving a deep knowledge about the directional drilling process, and steel and metallurgy. We set a new standard reference in the industry of drill pipes for shallow horizontal directional drilling. Some patents and some innovative ideas complete the achievements reached thanks to this collaboration.

DRILL PIPES FOR DIRECTIONAL DRILLING