Worldwide interest in the earth’s mantle has resulted in many diverse projects designed for natural resource evaluation, waste disposal, scientific research, and geothermal and natural gas appraisal. The goal of each of these projects is to drill deep into this abrasive, crystalline environment for investigation, appraisal and production purposes. For several of these projects, drilling to depths as great as 50,000 feet has been proposed and is in the planning stages. Most often, these holes are not drilled in hope of immediate economic gain, but in hope of gaining knowledge that may have a tremendous social and economic impact for the future.8 In each case, the feasibility and ultimate success of the project hinges upon the performance of the drilling and coring bits.
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- Bit Design for Crystalline Rock
James S. Dahlem
- Springer Berlin Heidelberg
Systemische Notwendigkeit zur Weiterentwicklung von Hybridnetzen