Afganistan Invasion and the Oil Pipeline

I've heard a lot of Moore's crtics provide as an example of his conspiritorial thinking that he advanced the notion that Afganistan was invaded only to that the Bush cronies could build a pipeline though the region. I don't think that he ever advances this notion. Actually, he states that the invasion was in response to 9-11, in that they had to do something.
He does bring up the point that post-invasion a pipeline was build, but I think that he is trying to suggest that they wasted no time in taking advantage of this opportunity. This is a much weaker claim.