Upon completion of this section, you should be able to:

the methods used to prevent a well from blowing out.  
Such techniques include, but are not limited to, keeping the borehole 
completely filled with drilling fluid of the proper weight or density 
during all operations, exercising reasonable care when tripping pipe 
out of the hole to prevent swabbing, and keeping careful track of the 
amount of fluid put into the hole to replace the volume of pipe 
removed from the hole during a trip.