Oil and gas well drilling workers perform some or all of the following duties:
A. Assemble pumping equipment and attach pumps and hoses to wellhead
B. Operate hydraulic pumping systems to pump chemicals, gases, sand, cement or other material into well
C. Read gauges to monitor pressure, density, rate and concentration and adjust pumping procedure as required
D. May mix chemicals and cements.
E. Align and manipulate sections of pipe or drill stem from platform on rig derrick during removal and replacement of strings of pipe, or drill stem and drill bit
F. Operate and maintain drilling mud systems and pumps during drilling, and mix mud chemicals and additives
G. Record mud flows and volumes and take samples