Barker, J.W. (Mar. 1997). Wellbore Design With Reduced Clearance Between Casing Strings. Society of Petroleum EngineersSPE/IADC 37615, 341-349. |
Rothermund, Heinz, Shell Expro Managing Director, Shell U.K. Exploration and Production. "Accelerating the Application of New Well Technology." Brochure produced by Publications and Cartography Services, UEPS/21 (Jun. 1996). |
Rothermund, Heinz, Shell Expro Managing Director, Shell U.K. Exploration and Production. "The Challenge of Drilling in the New Millenium." Brochure produced by Publications and Cartography Services UEPS/2 (Sep. 1996). |