What thriller/horror film is about five people trapped in a well thing? ?

So far, I know there's a female doctor named Jordan, with long blonde
hair. A guy named Luke who ends up being tied up for trying to stab a
guy with a heart problem, a Hooker named Anna, and I believe the
account abs loner is named Alex. My TV is saying this movie is named
Hunger, but I know that has got to be wrong.