Offshore Drilling 7
Offshore Drilling
Megan Mitchell
Missouri State University
General Purpose: To inform.
Specific Purpose: At the end of my speech, my audience should be able to illustrate what offshore drilling is and identify some impacts and benefits.
Central Idea: Inform students how offshore drilling works, the impacts and benefits of drilling.
Introduction
16,000 miles of the coastline were effected by one oil spill. Do you want the beach you go to every year on vacation to be ruined? No? Well I don't either. Ever since the BP oil spill I have found myself very interested in learning about offshore drilling. So today I am going to share with you my knowledge of how offshore drilling works, the impacts and benefits of drilling.
Body
Well I'm sure you've heard at least sometime on the news about offshore drilling, but I bet you never fully understood how it really works.
Well, I'm here to tell you!
The first thing that has to be done is geologists have to locate where the oil is. There are two ways that this is done.
The first way is magnetic surveying. It is done by detecting the magnetic effects along the ocean floor.
The second way is seimic surveying. Seimic sends air shock waves into the ocean floor, is there is oil present the waves come back to the surface and if there is no oil present then nothing happens.
The next step is the actual drilling. There are two steps into drilling.
The first step is exploratory drilling, this is the way of actually finding out if there is oil present because sometimes surveys can be wrong.
After there is proven that there is oil present, developmental drilling begins which is actually getting the oil.
(Transition: So now that you know a little...