Case Study
RENEGADE REMEDIES SURFACE GAS FLOW FOR P&A WITH 7-INCH CHANNEL FILL
The Renegade Punch and Inject Tool cleared the way for a vertical plug and abandon job in two days (no rig required) saving the operator time and cost.
CONDITION: While the client prepared to plug and abandon a vertical well with a production string inside a 7″ casing, pressure testing revealed annular gas flow reaching the surface. Regulatory requirements mandate all annuli should be static, no pressure or flow, before plug and abandonment operations can begin. The well could not proceed until the leak was fully remediated.
» The 2017 historical imaging log (left) confirmed an acceptable bond across the interval. The current isolation scan (right) identifies a connected channel, indicated in red and blue, showing gas and water migration that developed over time. This log comparison established the condition requiring remediation before plug and abandonment could proceed.
PROBLEM IDENTIFICATION: Crews discovered gas was migrating up the annulus between the production pipe and the 7″ intermediate casing from the production zone. Bond evaluation found the leak path and identified two potential routes: the existing channel and a secondary path behind the 7″ intermediate casing if pressure increased.
The standard remediation for this problem is a conventional cement squeeze, which was ruled out due to the tight annular environment. The other conventional alternative would have required rig mobilization, extended operation time, and ultimately more costs and invasive interventions.
SOLUTION & RESULTS: Renegade crews deployed the Punch & Inject Tool using a crane-assisted e-line, without a rig, explosives, or a cement truck. The operation was rig-less, self-contained and completed over two days.
Seven punches and three targeted injections placed resin across the annular interval, sealing the active leak path between the production string and the 7″ casing.
This not only addressed the primary migration, but it also proactively sealed the secondary path behind the intermediate casing before pressure could establish it. The punches remain, self-sealing, in the parent casing without the need for additional repairs.
» Pre-injection log (left) shows active gas and water channels across the treated interval. Post-injection log (right) confirms full resin fill and zonal isolation achieved with four punch points. After a 92-hour cure, the well was opened with zero surface gas and zero flow.
After 92 hours of cure-time, the well was opened and confirmed with zero surface gas present. The well was successfully cleared for plug and abandon completion.
KEY METRICS:
• 7 punch points / 3 resin injections
• 2-day operation
• Crane-assisted e-line deployment only
• 92-hour resin cure to full zonal isolation
