Engineering Commons^™

Shale Gas Rock Characterization And 3d Submicron Pore Network Reconstruction, Malek Elgmati

Masters Theses

"Determining shale gas petrophysical properties is the cornerstone to any reservoir-management practice. Hitherto, conventional core analyses are inadequate to attain the petrophysical properties of shale gas at submicron-scale. This study combines interdisciplinary techniques from material science, petrophysics, and geochemistry to characterize different shale gas samples from North America including Utica, Haynesville and Fayetteville shale gas plays. Submicron pore structure, clay mineralogy, wettability and organic matter maturation were investigated to evaluate the petrophysical properties of shale gas rocks and to determine the impact of organic and inorganic matters on wettability alteration for different fracturing fluids on shale gas rocks.

High pressure …

Experimental Study Of The Interaction Between Surfactants And Preformed Particle Gels, Farag Awadh Muhammed

Masters Theses

"Gel and surfactant treatment are two principle methods to reduce water production and enhance oil recovery (EOR). However, either method by itself has limitations that can be avoided by combining the two. Gel treatment can improve sweep efficiency but has little effect on micro-displacement efficiency. Surfactants are mainly used to improve displacement efficiency but have little effect on sweep efficiency. This research sought to investigate whether the combination of gel and surfactant treatments can be used to significantly enhance oil recovery while reducing water production for extremely heterogeneous mature reservoirs. A newer trend in gel treatments is preformed particle gels …

Numerical Simulation Of Relative Permeability Modifier Effect On Oil And Water Production, Murad Mohammedahmed Abdulfarraj

Masters Theses

"Excess water production is one of the most prevalent operational problems that oil companies are facing. Polymers and polymer gels have been used widely to control excess water production for mature oilfields. It is well known that polymers/gels can reduce the permeability to water (Krw) much more than that to oil (Kro). This phenomenon is called disproportionate permeability reduction (DPR) and the polymers or gels that exhibit this behavior are called relative permeability modifier (RPM). When RPMs are placed in reservoir, reduced permeability to water can lead to decreased water production, and sometimes increased hydrocarbon production, therefore prolonging the useful …

Mesh Optimization Of Finite Element Models Of Wellbore Stress Analysis, Ming-Yen Lee

Masters Theses

"Numerical modeling methods such as the widely used finite element method provide an excellent opportunity to analyze the wellbore state of stress for a variety of applications such as wellbore integrity, wellbore design or hydraulic fracturing. However, numerical modeling methods introduce errors by nature and may not precisely match the analytical solution if the meshing of the numerical model is not carefully taken care of. This study presents a parametric study of the meshing parameters mesh density, element type, and model size for 2-dimensional and 3-dimensional vertical wellbore models under three different types of boundary conditions, and a guideline for …