Nigerian graduate admission

I am a Nigerian with a low cgpa but a Gre score of 305 and toelf 101. What are my chances of getting into texas tech for petroleum engineering

http://www.depts.ttu.edu/pe/undergrad/
You mentioned GRE, are you asking about graduate school?

http://www.depts.ttu.edu/pe/grad/admissions.php
This is for graduate school info. Hope this helps.