i-DRILL solves complex vibration problems, achieves record ROP in Peruvian field

摘要

When PlusPetrol experienced excessive BHA/PDC bit vibration whilerndrilling in its high-profile Pagoreni field in Peru with a rotary steerable system, the company called upon Smith's i-DRILL engineering group to optimize the BHA design, including the PDC bit selection for its next well.rnThe drilling problems were causing unacceptable rates of penetration (ROP) while reducing the life of expensive downhole equipment, ultimately driving up the cost of field development. The issues were most noticeable when using an expandable reamer in a rotary steerable system BHA to drill a 10 5/8 in. pilot hole reamed open to 12 1/4-in. Specific performance issues experienced while holding angle in the tangent section included excessive torque-induced stick-slip as well as high axial and lateral vibration problems.