Question 3282 Deck General

The correct answer is A) buoyancy of the mud. When drilling from a MODU (Mobile Offshore Drilling Unit), the weight of the tubular goods (such as drill pipe) is reduced when run into the drilled hole due to the buoyancy effect of the drilling mud. The drilling mud, which fills the hole, exerts an upward buoyant force on the tubular goods, reducing their apparent weight in the water. This buoyancy effect is the primary reason for the reduced weight of the tubular goods when they are submerged in the drilled hole. The other options are incorrect because: B) vessel motion does not directly affect the weight of the tubular goods in the drilled hole, C) drill string compensators are used to compensate for vessel motion, not buoyancy, and D) formation pressure does not directly impact the weight of the tubular goods in the drilled hole.