As RSS tools evolve, so should bit designs

摘要

Worth sea fields continue to benefit from improvements in PDC bit and rotary steerable technology. There are, however, issues relating to very hard imbedded formations that result in stick-slip, bit/BHA wear, shocks/vibration, tool failures and short run lengths. Rotary steerable systems (RSS) are essential to drill the tortuous well paths. Push-the-bit RSS tools, first employed with early versions of point-the-bit systems, resulted in premature tool failures. Tool modifications, increasing their ruggedness, led to longer runs, and new point-the-bit systems have reduced shocks/vibrations, allowing more tolerance of the harsh drilling environment.