Thesis (Ph.D.)--University of Tulsa, 1995. / Includes bibliographical references (leaves 67-70).

Thesis (Ph.D.)--University of Tulsa, 1987. / Page xv lacking. Bibliography: leaves 150-154.

Thesis (Ph. D.)--University of Hong Kong, 2009. / Includes bibliographical references (p. 445-453) Also available in print.

Thesis (M. Phil.)--University of Hong Kong, 2010. / Includes bibliographical references (p. 113-118). Also available in print.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1971. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

This paper presents a blasting method called controlled trim blasting, in which the rock mass of an unstable gallery where high levels of vibration have been detected is analyzed. This methodology comprises a drilling mesh with two-contour gallery assessment, producing its drilling machines and determining the type of explosive used and burden and spacing, which will be detonated after the internal blasting. Further, the internal blasting will possess its drilling machines, burden, spacing, and a second type of explosive. The separation of the gallery into smaller parts will improve the blasting, as verified in the recorded simulation. In addition, the rock-mass stability improves because the explosives used in the perimeter of the gallery are low-power with mild detonation pressure, which does not generate high levels of vibration. This is a practical and efficient method in areas where the rock mass is not good or there is a mixture of rock types.

When drilling offshore, shallow gas hazards are a major concern because of their potential to cause a major blowout. This is a special concern when drilling in shallower water, where the gas influx reaches the rig sooner. A common practice used to avoid the potential dangers of shallow gas is to drill a pilot hole through the shallow gas zone with the hope that the smaller diameter hole will prevent such a large influx. The use of dual-gradient top hole drilling technology would allow for a larger hole to be drilled and the possible gas influx to be killed dynamically, which I have simulated with the use of a top hole dual-gradient simulator.

Thesis (M.S.)--West Virginia University, 2002. / Title from document title page. Document formatted into pages; contains x, 108 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 42-46).

Thesis (Ph.D.)--University of Tulsa, 1986. / Bibliography: l. 104-116.

Thesis (Ph. D.)--University of Wyoming, 2007. / Title from PDF title page (viewed on Jan. 9, 2009). Includes bibliographical references (p. 227-235).