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Fluid Flow Through Deformation Band, Huining Zhang
Fluid Flow Through Deformation Band, Huining Zhang
Masters Theses
"Cataclastic deformation bands, which are common in porous sandstone, have the potential to restrict fluid flow. Geological studies have shown that permeability of deformation band shear zones can be one to five orders of magnitude less than for the sandstone host rock. However, recent studies based on simplified analytical estimates have shown that fluid flow in jointed deformation bands may not be retarded since joints play an important role in conducting fluids. In this study, 2 dimensional finite element analysis (FEA) is used to simulate the total discharge flow rate through jointed deformations. Variations of single planar and conjugate jointed …
Mitigation Of Wellbore Instability In Deviated Wells By Using Geomechanical Models And Mpd Technique, Husam Raad Abbood
Mitigation Of Wellbore Instability In Deviated Wells By Using Geomechanical Models And Mpd Technique, Husam Raad Abbood
Masters Theses
"During drilling operations for the E oilfield in the Mishrif formation in southern Iraq, stuck pipe presents a significant wellbore stability problem for deviated wells. In this study, two solutions are utilized to address this problem. The first approach is a 1-D Geomechanical model of the Mishrif formation compiled based on the state of stress and rock strength parameters. It is utilized to assess the contribution of borehole collapse leading to the stuck pipe problems. The results of this study show that wells characterized by stuck pipe are drilled along azimuths which promote wellbore collapse. Three different failure criteria, the …