Cleaning Drilling Mud Pumps Purpose: Mud pumps circulate drilling fluid (mud) down the drill string and back up the annulus. Regular cleaning is essential to prevent blockages, corrosion, and premature wear. Steps for Cleaning: Shut down the pump and isolate it from the system. Drain all residual mud from the pump casing and fluid end using drain valves. Flush with clean water or a cleaning solution to remove mud residues, especially in the fluid end and suction/discharge lines. Disassemble key

Displacement Mud Displacement mud refers to the drilling fluid that is used to replace or “displace” another fluid already in the wellbore. This is often done while running in hole with tools, casing, or liners. When Is It Used During RIH? Running casing or liners: When casing is run into the well, especially to total depth (TD), a clean mud or spacer is pumped to displace cement or contaminated drilling mud. Tool runs (e.g., MWD, LWD, or BHA): Before running in hole with sensitive tools, displa