Figure F9. Consecutive stages in the installation of the Advanced CORKs (ACORKs) at Nankai Trough during Leg 196. A. Installing reentry cone and 20-in casing. B. Logging-while-drilling (LWD) operations. C. Opening LWD hole with pilot bit and 17-in hole opener. D. ACORK drill-in assembly with underreamer. E. Packers inflated after ACORK drilled into place. F. ACORK running tool released with drill-in assembly partially withdrawn. G. ACORK fully installed.