Question 3279Deck General70% to pass
When drilling from a MODU, the conductor casing is landed with its top extending to just _______________.
AI Explanation
The correct answer is B) below the drill floor.
When drilling from a MODU (Mobile Offshore Drilling Unit), the conductor casing is landed with its top extending just below the drill floor. This is done to provide structural support and prevent the well from collapsing during the drilling process. The conductor casing is the first and largest casing string set in the well, and its purpose is to isolate the shallow formations and prevent the wellbore from caving in near the surface.
The other options are incorrect because: A) the conductor casing would not be landed below the sea floor, as it needs to extend up to the drill floor; C) the conductor casing would not be landed below sea level, as it needs to extend up to the drill floor; and D) the conductor casing would not be landed above the sea floor, as it needs to extend just below the drill floor.
Related Questions
#3277 What is the chief advantage of an SCR or AC-DC system over a straight DC system for powering drilling rig machinery? #3278 The operation of hoisting the drill stem out of and returning it to the wellbore is called a _______________. #3280 The space around a pipe in a wellbore, the outer wall of which may be the wall of either the borehole or the casing, is the _______________.#3281 At the instant when a string of casing being run from a MODU is landed in the well head, _______________.#3282 When drilling from a MODU the weight in air of tubular goods on the racks is reduced when run into the drilled hole because of the effect of _______________.