The marine riser on the DEEP DRILLER should...

Question 1 of 3104866636ee728f7522a1c51809d

The marine riser on the DEEP DRILLER should be disconnected if it appears the mooring line tensions will exceed 522 kips or the ball joint angle will exceed __________.

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Question 1 of 31048

The marine riser on the DEEP DRILLER should be disconnected if it appears the mooring line tensions will exceed 522 kips or the ball joint angle will exceed __________.

🔍 Key Concepts

• Marine riser emergency disconnect criteria in the Deep Driller operations manual • Relationship between ball joint angle and safe operating envelope • Why allowable ball joint angle limits are kept relatively small to protect the riser and wellhead

💭 Think About

• Compare each angle choice with what would be considered a realistic maximum tilt for a riser ball joint before risking damage or loss of well control. • Think about whether the disconnect limit would be set very close to normal operating angles, or much higher as a last‑resort limit. • Ask yourself: as the mooring tensions approach 522 kips, would the riser still be nearly vertical, or already noticeably inclined?

✅ Before You Answer

• Verify the maximum allowable ball joint angle specified for the Deep Driller in its operating or stability manual, not generic MODU data. • Check the normal working angle range versus the emergency disconnect angle—the disconnect angle will be above normal but still conservative. • Confirm that the chosen angle is small enough to prevent structural damage but large enough to avoid unnecessary disconnects in minor offsets.