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To: hubris33 who wrote (43327)8/25/2006 9:42:22 AM
From: isopatch  Read Replies (1) | Respond to of 108660
 
Hubie. Until recent years, air drilling rigs were limited to

relatively shallow targets in the 2,000' range. Knew an Illinois basin producer who drilled with such a rig in the 1980s. He loved it and told me he wished someone would develop one with deeper capabilities, as most drlg in even that relatively shallow old basin was deeper.

This new tech capable of going to 14,000 or even 16,000 is a quantum leap and very exciting. I'll defer to Jim on the details. He's far better informed on this topic than me.

Isopatch



To: hubris33 who wrote (43327)8/25/2006 12:47:47 PM
From: JimisJim  Read Replies (2) | Respond to of 108660
 
hubris: what's new about this type of air drilling (should have refered to it as "flood reverse air drilling" instead of just air drilling) is that the "mud" goes downhole on the outside of the drill string and returns to the surface inside the drilling tubulars... a reverse circulation air drilling... one of a kind so far.

Jim


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