Underbalanced drilling (UBD) intentionally keeps bottomhole pressure below the formation pore pressure to allow controlled inflow while drilling. It sits at the intersection of well construction and ...

RFID-activated drilling reamers are downhole tools in the bottomhole assembly (BHA) that selectively expand or retract reamer blades when commanded by radio-frequency identification tags pumped from ...

The geology and science behind oil drilling can be quite interesting and important for understanding which companies are the right fit for your investment. When people talk about oil drilling, many of ...