There is only one section for Oghren in DAA section of keep. If he reunited with Felsi or not, but that's about it. I'm sure Oghren is out there somewhere drinking his self stupid, waiting for the next DA protagonist to wander though his door.
That's what i mean since in DA2 and DAI, no one says a word about the drunken dwarf. I don't understand why Bioware is completely ignoring his existence. Still Varric and Oghren have to meet in Inquisition DLC, they just have to. it be something like this although it's just a fan idea.
Oghren: Do you even know what it means to be a dwarf?
Varric: Do you mean the self-righteousness, the greed, or the height?
Oghren: I mean the beard! What self-respecting dwarf goes bare-chinned like that!
Varric: Habit, I suppose.
Oghren: And the clothes! You dress like some fancy little noble!
Varric: Dwarf, remember? Never had the option to be a "big" fancy noble.
Oghren: And...ugh...the crossbow!
Varric: ...what?
Oghren: A real dwarf uses an ax, a sword, a mace! Not some cheap, cowardly contraption that...
Varric: (aims crossbow) You insult Bianca again, and I put one between your eyes.
Oghren: ...uh...Bianca...?
Varric: I...MEAN...IT.
Oghren: ...meep...
Second banter
Oghren: So, ah...you tell stories, do you?
Varric: Often stories, sometimes fables, and occasionally a personal account. Why?
Oghren: I got this story...was wonderin' if it was any good.
Varric: Does it involve sex, alcohol, and bloodshed?
Oghren: That a problem for you?
Varric: Not at all. Sounds familiar, actually. Go on.
Oghren: Well, I had all my clothes stolen this one time and...
Varric: Not interested.