Potentially hundreds of feet long, the bottom hole assembly (BHA) runs from the drill bit to the drill pipe and comprises various application-dependent tools, among them rotary steerable systems, ...
The average do-it-yourselfer hates to drill metal, especially steel. We don’t know how many questions readers have submitted and we’ve answered on that topic over the years. Even the most enthusiastic ...
Robert G. Casto, Maurizio Senese Agip Petroleum Co. Inc. Houston The use of bicenter polycrystalline diamond compact (PDC) bit technology, dual-power-head down-hole motors, and oil-based drilling ...
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