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9780878147861
Dr. Yakov Gelfgat served as Director of Drilling Technology at the Drilling Research Institute VNIIBT (later NPO Burovaya Tekhnika) for more than 30 years. He is the author of more than 70 books and articles as well as 40 inventions Dr. Mikhail Gelfgat is President and CEO of Aquatic Company, in Moscow. Dr. Gelfgat served at Drilling Research Institute for 25 years. His expertise is coring techniques, retractable drillbits, aluminum tubulars, downhole motors and deep wells, and hard rock drilling Dr. Yuri Lopatin is the department Deputy Chief of Prospecting Oilfield Equipment Development at Moscow Machine Works. He has published more than 50 articles on gas-liquid mixtures application in drillingGelfgat, Yakov A. is the author of 'Advanced Drilling Solutions Lessons from the Fsu' with ISBN 9780878147861 and ISBN 0878147861.
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