Do mud engineers have night shifts?

There are night shifts. Mud engineers have night shifts, working 12 hours a day, and have the ability to complete/workover well fluids and exploratory well test project operations and summarize reports, to work night shifts in conventional well drilling fluid projects, to analyze and test the performance of unconventional drilling and completion fluids, and to technically summarize drilling fluid operations in all wells except high temperature and high pressure wells and special wells.