Effective site preparation is the foundation of a successful workover operation and prevents costly downtime during mobilization. This guide covers the critical field protocols required to ready your location for heavy equipment arrival.
Step 1: Verify Access and Site Clearance
Inspect the lease road and entrance gate to ensure they support the weight and turning radius of the workover rig. Remove all unnecessary materials, debris, or stagnant equipment from the well pad to provide adequate working clearance. Failing to clear the area leads to delays in rig positioning and increased safety risks.
Step 2: Isolate the Wellbore
Shut in the well by closing the appropriate master valves and confirming the integrity of the pressure barriers. Follow all Lockout Tagout procedures to prevent accidental pressure surges during the move. An improperly isolated well poses a high-risk scenario for personnel and environmental containment.
Step 3: Bleed Off Residual Pressure
Carefully bleed off all trapped pressure from the tubing and casing strings through the flare line or a designated separator. Verify that gauges show zero pressure before proceeding with any rig-up activity. Skipping this step risks high-pressure releases when breaking connections.
Step 4: Inspect Ground Conditions and Stability
Examine the location for soft spots or inadequate soil bearing capacity that may shift under the rig outriggers. Install heavy-duty rig mats to provide a stable, level foundation for the carrier. Soft or uneven ground results in dangerous rig instability during lifting operations.
Step 5: Identify Underground and Overhead Hazards
Mark all buried flowlines, electrical conduits, and cathodic protection systems with high-visibility flagging. Check the site for overhead power lines to ensure the mast has sufficient clearance during full extension. Contact with power lines or ruptured lines creates immediate hazards for the crew.
Step 6: Configure Rig Power and Fluid Storage
Ensure the circulating tanks are positioned correctly and that all suction hoses are ready for quick coupling. Confirm that the primary and backup power sources are staged in accessible locations outside the main work zone. Poor fluid management design leads to spills and extended rig-up times.
Step 7: Conduct Final Pre-Rig Safety Walkaround
Perform a final sweep of the location to confirm that all emergency exit paths are clear and fire suppression equipment is positioned properly. Verify that all required safety signage is installed and readable for incoming contractors. Missing signage or blocked exits can lead to failed safety audits or preventable injuries.
Proper site preparation minimizes mobilization delays and optimizes overall workflow performance. Verify that all containment systems are fully operational before breaking the initial wellhead seal.
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