Title of dissertation: A STOCHASTIC EQUILIBRIUM MODEL FOR THE NORTH AMERICAN NATURAL GAS MARKET Jifang Zhuang, Doctor of Philosophy, 2005 Dissertation directed by: Professor Steven A. Gabriel Department of Civil and Environmental Engineering This dissertation is an endeavor in the field of energy modeling for the North American natural gas market using a mixed complementarity formulation combin...

MICP (Mercury Injection Capillary Pressure) is a standard procedure for core analysis. However, the use of mercury is forbidden in some environments and so far there are no alternative methods. NMR provides information on pore distribution but is not directly related to the capillary pressure. This paper presents a feasibility study for replacing mercury by water or brine (BICP: Brine Injection...

Using a soil improvement biotechnology based on microbial-induced carbonate precipitation (MICP) to form horizontal water barrier in foundation pit dewatering can not only achieve good control effect, but also the cost and obtain economic environmental benefits. In this study, taking Shanghai layer ⑨ sand as research object, solution injected into by MICP grouting technology includes bacterial ...

As the heterogeneity of pore systems, carbonate rocks commonly exhibit unpredictable porosity vs. permeability relationship and make exploitation prediction prolific reservoirs difficult. Most published studies on systems were conducted in sandstones shales, while rocks, especially dolostones have received little attention. In this study, we investigate porous dolostone reservoir Lower Triassic...

Climate change and desertification caused increases in sandstorms sand movements due to the erosive force of wind. Wind erosion is a phenomenon depending on climatic components surface roughness arid semi-arid regions responsible for health economic loss. The controlled by increasing resistance soils using chemical, physical biological methods. Due high cost environmental issues conventional te...

The ability of a rock to store and flow fluids is dependent upon the pore volume, pore geometry and its connectivity. Carbonate rocks are inherently heterogeneous having been laid down in a range of depositional environments and having undergone significant diagenesis. They are particularly difficult to characterise as the pore sizes can vary over orders of magnitudes and connectivity of pores ...

Biocement can be achieved through the microbially induced carbonate precipitation (MICP) process. Such a method potentially utilized as an eco-friendly for civil and environmental engineering applications such soil ground improvement wind erosion control of surface soil. In this method, one key step is effective production ureolytic bacteria. previous laboratory field studies, cultivation bacte...

Strength improvement of cement-based materials by the addition bacteria has been reported over past decade and mainly attributed to microbially induced calcite precipitation (MICP1). However, ability survive, grow retain their metabolic activity in concrete is questionable. This research sheds light on mechanisms involved strength enhancement cementitious that contain bacteria. The different co...