(01-15-2014, 10:44 PM)johnwgrant Wrote:There have been a few comments regarding 2D vs 3D seismic. In my ignorance, how does 2D seismic become 3D seismic? Is 3D obtained in the same manner as 2D? The implication (from comments) is that 3D is 'better'. So, why does IOC not progress to 3D seismic?
(Just trying to get educated !)
I asked my oil and gas investor friend this same question! I may mess this up but he said in 2D seisimc they place 'geophones' in a straight line to measure the response from the sound or whatever it is they blast into the ground to make noise or vibration. He said in 3D it's done in a 'grid' over the area so they can get a full 3D picture. He said 2D is way cheaper and isn't very good but in places with rough terrain it's either impossible or very expensive to do 3D. That is all I know!! And no 3D glasses required!!