What is the funnel-shaped device used to transfer drilling mud and cementing materials?

• A. Hopper
• B. Chute
• C. Silo
• D. Funnel

Answer: (A)

Handling bulk drilling fluids and cementing materials relies on a hopper. This funnel-shaped container has a wide top for loading and a narrow bottom that provides controlled, gravity-fed discharge into the next stage, such as a transfer line or mixer. The design helps meters the flow and prevents issues like clumping or bridging in cement and mud handling. A chute is just a guiding channel, a silo is a large storage vessel, and a funnel is a general term not indicating a bulk-discharge feeding device. So the device used to transfer drilling mud and cementing materials is a hopper.