TY  - SER
AU  - Schmigel,Kevin
AU  - Peach,Simon R.
AU  - Peach,Simon R.
TI  - Controlled-pressure drilling system proved offshore UK: Underbalanced drilling system comprises new 500-psi rotating BOP and an advanced, high-pressure, gas/liquid/solids separating and handling system
KW  - Perforación bajo balance
ER  -