The newly revised Rig Math 2nd Edition presents an easy way to learn the math used in drilling. It is a highly visual approach that makes math extremely easy and intuitive. The reader will learn to reason his way through any well control problem without using complicated equations or a kill sheet. Rig Math covers the hierarchy of operations in equations, use of scientific calculators, multiplying fractions with words, conversion factors, elementary algebra and much more. Drillbert Engineering, 2011. Approx. 100 pages.