Can't find the presentation you were looking for? There are a couple of reasons we can't share all the presentation slides from the talks we host. One of the most common reasons is when we get an SPE Distinguished Lecture presentation. SPE sends these speakers around the world to speak to SPE chapters and then at the end of their tour will post their presentations on the SPE national website. You will have to wait until the end of the SPE year (June) to find Distinguished Lecture slides online.