Main results achieved during the project Sample Clauses

Main results achieved during the project. 3.2.2.1 Water based fracturing fluids in clay mesopores

Main results achieved during the project. 3.3.2.1 Polysaccharide-based Formulations

Main results achieved during the project. 3.4.2.1 Microscopic transport modelling

Main results achieved during the project. From the synthetic point of view we have examined the general synthetic pathway for the synthesis of novel zeolites as depicted in Figure 20. The ADOR method developed in our laboratory utilizes oriented chemical weakness of some bonds (in our particular case of Ge- O bonds) to selectively disassemble the parent zeolite and to form the layered material. In this project we succeeded to use zeolite UOV and to transform it into another new zeolite IPC-12. Successful synthesis of IPC-12 is important step forward in the synthesis of zeolites as this was the second example how to disassemble the parent zeolite and to produce another one. It strongly evidences the general applicability of ADOR mechanism, which in the future surely will not be limited to zeolites. Using Monte Carlo and molecular dynamics simulations, we predicted adsorption isotherms and transport diffusivities of light alkanes in microporous and hierarchical ZSM-5 zeolites. The hierarchical ZSM-5 zeolite with dual micro/mesoporosities was modeled as an MFI structure where a cylindrical mesopore of 4 nm diameter was introduced. All isotherms were type I, except for propane and n-butane in the dual-porosity zeolite, which were type

Main results achieved during the project. The models developed enable full and accurate characterisation of safety hazards and evaluation of safe distances to people and structures as a part of risk assessment of a shale gas exploration/production site. We have demonstrated effectiveness of the model in a case study based on realistic design of a shale gas exploration site. The simulation model predictions are presented in the form of 2D plots of thermal radiation and explosion over- pressure contours as a function of distance and time following well blowout. This data in turn forms the basis for determining the minimum safety distances taking into account defined thresholds for deferent severity harm scenarios. Figure 24 shows the instantaneous incident heat flux radiation contours at the ground level within +/- 200 m from the jet flame at 0.5, 2, 10 and 50 seconds after the well blowout. The results correspond to zero wind speed and 200 bar formation pressure. It can be clearly seen that the incident heat flux decreases with the distance from the centre of the jet and also decays with the time, reaching its maximum of ca 3 kW/m2 at ca. 20 m distance from the well at time interval of 30 s.

Main results achieved during the project. During the project, coupled reservoir flow and geomechanical models for computer simulation of sub-surface fluid injections and fault reactivation for a given site characterisation were developed. The reservoir models for fluid flow are used to predict subsurface pressure changes during and after injection. The reservoir flow models are based on the numerical solution of sets of finite-difference equations that describe transient, multi-phase flow in heterogeneous porous media. Analytical solutions were obtained for different types of reservoir and injection conditions. With a prediction of pore pressure changes from the reservoir model, the potential to induce seismicity is then assessed using geomechanical models of faults, which can predict their propensity for slip. The model was applied to European case studies of induced seismicity for Xxxxxxx Shale and also to an Enhanced Geothermal System in Basel, Switzerland. For a given set of model input parameters, the model was able to reproduce the observed seismicity satisfactorily.