Truck-mounted reverse circulation drilling rig MWCF200IV

Operation Procedure of Truck-mounted Reverse Circulation Power Head Drilling Rig

1.Preparation before Construction

• Site Survey and Leveling: Survey the site after arrival. Level it if uneven to prevent rig tilt or sink.
• Equipment Inspection and Commissioning
  • Check chassis (tire pressure, suspension, brakes if applicable), diesel engine (fluids, belt, connections, start and listen), hydraulic system (fluid, leaks, components, operate handles), electronic control system (wires, components, instruments), vacuum pump (oil, connections, vacuum degree), and drill tower (structure, bolts, verticality, wire rope, pulleys).
• Tool and Material Preparation: Prepare drill tools (select bits by formation), other tools, and materials for mud if needed.
• Positioning and Installation
  • Position the rig accurately using a system or instruments.
  • Lower and adjust outriggers for a level chassis.
  • Erect the drill tower carefully, check and adjust verticality.

2.Drilling Operation

• Initial Drilling
  • Install bit, lower tool, start engine and hydraulic system, rotate power head slowly, start vacuum pump or relevant system for reverse circulation, and drill slowly.
• Normal Drilling
  • Adjust parameters based on formation. Observe cuttings, check tool wear, and monitor rig systems. Act on any abnormalities.
• Adding Drill Pipes
  • Stop drilling, lift power head, clamp drill pipe, add new pipe, connect properly, and resume drilling.

3.Completion of Drilling and Hole Cleaning

• Final Hole Determination: Measure depth and check quality. Take remedial steps if needed.
• Hole Cleaning Operation
  • Use reverse circulation to clean. Adjust mud if applicable. Move drill tool moderately.

4.Pulling out the Drill Pipe and Equipment Withdrawal

• Pulling out the Drill Pipe Operation: Lift power head, clamp and remove drill pipes.
• Equipment Dismantling and Arrangement: Dismantle tower, shut down engine, arrange systems, retract outriggers, load and fix equipment.
• Site Cleaning: Clear site, dispose waste, and restore original state.