Good question tika1.
The bonds are priced for a probable bankruptcy. Short answer: I do not know.
If oil goes and stays for a while at US$35 to $40/bbl Brent, GTE will suffer. It could survive by selling off assets but the market for those assets will be very weak. Any Petrotal success would help.
If by the end of 2021, Brent is back up over $50/bbl, then perhaps GTE will do OK.