Solving Common Rotary Drilling Rig Construction Issues: Emergency Response Plans for Drill Jamming And Hole Collapse 2025-10-30
Drill jamming and hole collapse are major risks in rotary drilling rig construction. For drill jamming, handle based on causes: inject mud and reverse at low speed for hard rock, increase mud displacement and lift slowly for slag deposition, impact to detach boulders. For hole collapse, immediately lift the drill and inject high-viscosity mud; ream for minor collapse, fill with clay and gravel for deep collapse, and use modified mud with casing for quicksand. Prevention includes stratum investigation, matched mud, speed control, slag cleaning and drill bit replacement as needed.
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