دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A drilling method that make fluid column pressure in the well balance with formation pressure. It can improve ROP obviously, protect reservoir, and decrease or avert mud eroding and lossing.

n: the continuation of drilling operations while maintaining a seal at the top of the wellbore to prevent the well fluids from blowing out.

n: refer to under balance pressure drilling

n: refer to under balance pressure drilling

n: The drilling that the amount of pressure (or force per unit area) exerted on a formation exposed in a wellbore below the internal fluid pressure of that formation.Its advantage is have quick rate of drilling,and finding oil and gas formation readily,but h