Isealate enables resumption of frac schedule

A US-based operator faced a significant challenge when a parted connection at 16,415 ft halted operations in an unconventional well undergoing a frac schedule. 

The issue required a robust sealing solution to prevent leakage while maintaining minimal loss to the casing’s inner diameter (ID) for continued frac operations. 

The risks (if a low impact remediation could not be achieved) included a limited flow capacity for high-pressure fluids and proppants essential to the frac schedule.  

A significantly reduced ID could:

-    Increase frictional pressure during pumping.
-    Reduce the efficiency of fluid delivery during frac stages.
-    Potentially result in suboptimal fracture initiation and propagation.
-    Create high risk conditions for wireline conveyance of tools and perforating guns.

The repair also needed to withstand 5,000 psi internal pressure and a sand-heavy environment. 

Alternative patch solutions would have required a rig or tubing-conveyed deployment, meaning significantly increased costs, a larger footprint, and increased HSE risk.  

Welltec® deployed an Isealate Springblade Patch, initially pumping down before correlating via Well Tractor® (wireline conveyed).

Once in position across the parted connection, the standard procedure for setting the Isealate Springblade Patch was executed, with a pre-applied epoxy resin forming the initial seal, and activation of the surface-controlled setting tool enabling expansion of the laminate steel sheet to form a complete seal. 

A seamless operation allowed the client to resume frack operations immediately. Additionally, there was no need to change the plug and perforation design thanks to the minimal impact on ID: 4 mm / 0.16”.  

The repair enabled a subsequent frac below the patched section, improving operational efficiency and production capacity without the need for a rig or a snubbing unit.

The resilient Isealate Springblade Patch delivered high performance under challenging conditions, earning a top satisfaction rating from the operator.