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Gold/Mining/Energy : Strictly: Drilling and oil-field services
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To: Aggie who wrote (42118)4/15/1999 7:24:00 PM
From: JungleInvestor  Read Replies (1) of 95453
 
Aggie, following is info gleaned from the Yahoo SEV board on wellbore stability:

One poster commented on wellbore stability in the Colombian Andes based on Cusiana / Cupiagua wells (Cus/Cup wells). Fractured shales in the Andes caused high dollar problems on many early BP wells (cost overruns of 3 x budget, time overruns of 4 x program), the problem is impossible to fix but can be managed (most of the time).

Another poster said: SEV wells NOTHING like Cup/Cus Wells. The issues that you mentioned which BP face in their drilling do not exist in the Emerald Mountain block. The big problem they face is underpressured formations and how to drill and not damage their formations. Before the reservoir, they also have low bottom-hole pressures that force them to drill with foam, etc., etc. Ultimately the SEV wells will be drilled in 2-3 weeks compared to the 4-6 months and more spent drilling in the area to which you refer.
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