الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
 |  | from | 139 |  |  |
| | | from | 139 | | |
Abstract
In this study, simulation models for tight oil reservoirs were created to carry out several simulation modeling runs and obtain an estimate for the ideal well productivity in such unconventional extremely low permeability reservoirs. Reservoir properties and hydraulic fracture parameters, such as fracture spacing, fracture height, fracture half-length, and fracture conductivity are studied by setting different ranges per parameter and results were investigated by comparing the oil production rate trends and total cumulative oil production after a ten-year lifetime. Sensitivity analysis was performed on the different hydraulic fracturing parameters by setting different ranges and setting the objective function to be the cumulative oil production. A statistical analysis for the results from the simulation runs was carried out using Morris’s method and Sobol Method to relate input variables to the response. The findings indicate that the most important parameters that influence the performance of such tight reservoirs are those related to fracture half-length and fracture height, fracture conductivity and matrix permeability. The analysis of the overall production trend conducted for variable well spacing and different numbers of wells per 100 acres area taking into consideration the economic evaluation based on a new well spacing optimization technique using the influence of the oil price as well as the other operational expenditures needed for different scenarios. The net present value was calculated for several cases by changing the number of wells 2,3,4,5,6,7, and 8 wells, and showed that the optimum well spacing is 300 feet per 100 acres in this study for tight oil reservoirs.