The actual title of the article by Dr. Tom Termotto is Pressure At The Wellhead And What It Really Means.

The article raises a number of issues that arise from the BP oil well situation that you would not think of based on your experience of day-to-day circumstances with normal pressures and velocities of flows you see every day. The consequences of these issues may not be readily apparent for quite some time after things appear to have returned to normal.

It all makes sense.  However, you will have to judge for yourself whether you think Dr. Tom Termotto has the qualifications to be writing about this subject.  In the article are various links that you can follow to help you decide.  Of course there are links to other related articles that will tell you even more.