DEVELOPMENT OF DRY DIRECTIONAL DRILLING TECHNOLOGY

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

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