Hello, I am also an employee of PetroChina. I want to study abroad at my own expense, but I can't stay without pay.

Hello, classmate, you won't get any effective information if you ask for leave without pay online.

Whether you can leave your job without pay, you should ask the human resources department of PetroChina or the relevant labor and personnel department.

For the current employment unit, the possibility of leaving without pay is very small. But if you can do it, studying abroad is no problem.

Specific study abroad matters can be followed up as needed.