Shelf Drilling, Ltd has disclosed that it has secured an extension on the Shelf Drilling Tenacious jack-up rig in direct continuation of its current contract for drilling operations offshore Angola until November 2023. The contract includes an additional one-year option.

In mid 2021, the Jack-up drilling contractor Shelf Drilling was awarded a one-year contract for the Shelf Drilling Tenacious jack-up rig with Chevron's Angola subsidiary Cabinda Gulf Oil Company.

The contract in Angola was expected to start in January 2022, and, according to the offshore drilling rig owner, included multiple option periods.

Before the hiring of the rig by Chevron in June 2021, the Shelf Drilling Tenacious jack-up rig, the rig was considered to be idle, after completing its contract with Masirah Oil in Oman, in April 2021.