Published on 16 July 2018
Case study – DV Tool & ECP Valve Repair, USA
On a Plug & Perf frac well, 7 in. casing on the vertical section with a 4.5 in. liner below, the annular casing packer was under-rated and the pressure test during the toe prepping operation created a leak on its safety valve, challenging the fracturing operation.
- A 40 ft (12 m) 7 in. Reinforced patch was selected for its high expansion ratio in the DV tool larger ID and for its collapse resistance.
- The Patch was positioned by wireline. A pup joint was placed in the work string above Saltel’s tools and the position correlated from the well gamma ray log with a CCL/GR.
- Set in 2h & 45min, the Patch has been successfully pressure tested up to 9,600 psi