Overcoming Hard Rock Drilling Challenges
2000
Citations Over TimeTop 24% of 2000 papers
H. Santos, João Carlos Ribeiro Plácido, José Eduardo Ferreira de Oliveira, Luiz Antônio Pierantoni Gambôa
Abstract
Abstract Drilling through hard rock has been a limiting factor to economically develop significant hydrocarbon reserves in several areas. The high cost to explore and develop an oil/gas accumulation is the key factor to be overcome. This paper describes a Joint Industry Project (JIP) that has been started to select and field test the most promising technologies under development that will allow a significant reduction on well cost. Problems faced while drilling hard rocks are not only restricted to slow penetration rate, but also the non-productive time associated to drill string failure, wellbores out of gauge, stuck pipe associated to block instability that falls into the well, and fluid losses due to fractures.
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