ZXHD liner top packer stopped gas flowback in offshore well

A shelf operator off the coast of Louisiana was drilling a 16,000-ft (4875-m) openhole well from a jack-up rig. The plan called for installing roughly 3,000 ft (914 m) of 7-in., 32-lb liner starting at 10,770 ft (3283 m)—and then running 5-in. liner below that to the toe of the well—to stabilize the hole and reduce potential non-productive time (NPT) typically caused by hole instability. Because of its ability to create a gas-tight annular seal and stop gas flowback with pressures from below as high as 10,000 psi (690 bar), the ZXHD^TM liner top packer was chosen to use with the 7-in. liner.

Download the PDF to read the full case study.