Overview:
- Risk – collision
– Gross error
– System failure
– Exempt offset & manage risk with ranging
- Positional uncertainty
– Robust application of surface uncertainty
– Clearance calculations should already take global systematic errors into account. Parallel wells need a similar approach to target analysis
- 3D well designs / collision avoidance in high volume environment
– Take current best practice and refine workflow for efficiency – visual answers
– Remote specialists aiding rigsite operations; knowledge management
– Assess lease efficiency
- Technology & tools easy to transferred. Experience, less easy
Market Place
- Shale Gas
– 1821 shale gas well, Fredonia, NY predates Drake oil well by 38 years
– Extensive basins US land
– Over 100 rigs currently drilling in Marcellus shale
– Significant drilling market share with smaller DD / MWD service providers
Market
- Shale Gas (USA)
– 1996, 1.6% of US gas production
– 2006, 5.9% of US gas production
– 2007, 4185 shale gas wells drilled
– Trends continuing upward
- Shale Gas (international)
– November 2009 agreement between USA & China to share shale gas technology
– November 2010 agreement between USA & India to share shale gas technology
– Austria, Germany, Hungary, Poland assessing shale gas potential
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View the entire Presentation:
Shale Gas Wellbore Positioning Challenges
Pete Clark - Chevron