Resuming Drilling
After a new joint of pipe has been made up and the kelly and drill string are properly aligned, drilling operations resume. In this process, the driller starts the mud pumps to reestablish circulation and carefully picks up the drill string off the slips.
This transition marks the return to active drilling and requires close coordination between the driller and the floor crew to ensure equipment is properly engaged and personnel are clear of rotating and moving components.
The crew resumes lowering the kelly bushing and reengaging the drill string.
- The drill crew removes the slips once the drill string is properly supported by the hoisting system.
- The driller lowers the drill string until the kelly drive bushing fully engages the master bushing.
- After the bushings are engaged, the driller begins rotating the drill string, lowers the bit back to bottom, and continues drilling the hole.
Potential Hazards
- Being thrown off balance or struck when the rotary table engages and begins to rotate.
- Getting caught in rotating equipment by loose clothing, gloves, or unsecured personal items.
- Pinch-point hazards when removing slips or engaging bushings.
Possible Solutions
- Stand clear of the rotary table and rotating equipment whenever it is engaged.
- Ensure all personnel maintain proper footing and remain outside designated red or restricted zones.
- Secure loose clothing, remove dangling items, and avoid wearing gloves near rotating machinery.
- Maintain clear communication between the driller and floor crew during startup.
Knowledge Check Choose the best answer for the question.
5-7. Why should workers stand clear of the rotary table?
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