horizontal drilling

If you are like me I had difficulty getting my head around the concept of horizontal drilling. I received links to some animations that some of you might find interesting. The first link gives commentary to shale drilling however the second link only gives you the animation.
I was given these while attending an oil company AGM. What amazed me was that the MD could direct the drill bit from his office here in Perth.
James

http://www.geoart.com/educational/hsd_gas.php

http://www.geoart.com/educational/horz_drilling_methane.php