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Estimation of average reservoir pressure and completion skin factor of wells that produce using sucker rod pumping /Barreto Filho, Manuel de Almeida, January 2001 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references (leaves 261-267). Available also in a digital version from Dissertation Abstracts.
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Simulation of wave propagation in boreholes and radial profiling of formation elastic parametersChi, Shihong 28 August 2008 (has links)
Not available / text
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Chemical and thermal effects on wellbore stability of shale formationsYu, Mengjiao 28 August 2008 (has links)
Not available / text
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The effect of certain additives upon the physical properties of Portland cementHoover, William Stough 08 1900 (has links)
No description available.
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Mechanistic modeling of cuttings transport in directional wells /Campos, Wellington. January 1995 (has links)
Thesis (Ph.D.)--University of Tulsa, 1995. / Includes bibliographical references (leaves 67-70).
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Correlations for drill-cuttings transport in directional-well drilling /Becker, Thomas Edward. January 1987 (has links)
Thesis (Ph.D.)--University of Tulsa, 1987. / Page xv lacking. Bibliography: leaves 150-154.
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Chemical and thermal effects on wellbore stability of shale formationsYu, Mengjiao. January 2002 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.
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Interactions at the clay/polymer/water interfaceShewring, Nigel Ivor Edward January 1998 (has links)
The thesis investigates the behaviour of aqueous montmorillonite suspensions and also the interactions between montmorillonite as a free standing film and in highly dispersed aqueous suspension with water soluble polymers used as additives in water based drilling fluids. FTIR microscopy and FTIR ATR spectroscopy have been employed to study in-situ dehydration of fully dispersed aqueous montmorillonite suspensions. The IR spectrum of the dispersed bentonite shows significant differences from that of a dry bentonite powder, which have been attributed to the hydration of the exchangeable cation. Drying, or concentrated salt solution causes the differences to disappear and this is attributed to the exchangeable cation settling back to its ditrigonal cavity in the silicate sheet of the mineral under these conditions. The adsorption of various molecular weights of neutral polyacrylamide (PAM) onto montmorillonite has been studied using FTIR transmission, ATR spectroscopy and XRD. Shifts seen in the NH[2] stretching and bending bands have been interpreted as being due to H-bonding with the outer co-ordination sphere of exchangeable cations. KCl has shown to have some influence on this system. Another neutral polymer used extensively in water based drilling fluids is polyalkylglycol (PAG). The adsorption of two molecular weights of this polymer from aqueous solutions of various concentrations have been monitored both in the presence and absence of KCl. The physical form of the montmorillonite (either as a free standing film or as a dispersed suspension), the concentration of the polymer solution, the polymer molecular weight and the presence of KCl all have significant effects on the adsorption of polymer. The stabilisation of montmorillonite films by PAG and PAG/KCl solutions has been monitored by ATR spectroscopy, and the dehydration of these films by polymer has been monitored using FTIR spectroscopy and XRD. The interaction of PAG is thought to be via hydrogen bonding with the innermost co-ordination sphere of the exchangeable cations which thus presents a hydrophobic surface to solvent molecules, preventing the film from collapse. Since all water based drilling fluids are multi-component systems, techniques previously used have been employed to study the competitive adsorption of the polyalkylglycol and polyacrylamide components. Preferential adsorption of the PAG is seen in these systems either due to the mass transport effects (PAG is considerably smaller than PAM) or due to PAG removing all but the inner cation hydration sphere, and presenting a hydrophobic surface for the PAM, and therefore preventing its adsorption.
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Mechanical behavior of concentric and eccentric casing, cement, and formation using analytical and numerical methodsJo, Hyunil, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references and index.
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Performance evaluation and selection of rotary drilling bitsFarrelly, M. January 1988 (has links)
No description available.
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