Question 2767 Deck General

The correct answer is B) buoyant riser. In very deep water drilling, the weight of the riser joints can create significant tension that needs to be reduced. Using a buoyant riser, which is filled with a buoyant material like syntactic foam, helps to offset the weight of the riser and reduce the overall tension. This buoyancy helps to keep the riser in a more vertical position and prevents excessive sagging or bending. The other options are incorrect because: A) Aluminum risers are not typically used to reduce tension in very deep water drilling. C) An intermediate tensioner is used to control the tension in the riser, but it does not provide buoyancy. D) A tapered riser, which has a smaller diameter at the top, does not inherently provide buoyancy to reduce tension.