Wilson C. Chin, author, scientist and software developer, earned his Ph.D. from M.I.T. and M.Sc. at Caltech. He has published fifteen research monographs, over a hundred papers and more than four dozen patents. His interests focus on MWD design, managed pressure drilling, reservoir engineering, formation testing and electromagnetic logging. Mr. Chin's books, available from www.amazon.com, www.wiley.com and www.elsevier.com, describe test methods, math models and numerical algorithms in detail. Contact the author at wilsonchin@aol.com or (832) 483-6899.