Investigation of productivity of heavy oil carbonate reservoirs and oil shales using electrical heating methods

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2008

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Hasçakır, Berna

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The recovery characteristics of Bolu-Himmetoglu, Bolu-Hatıldag, Kütahya- Seyitömer, and Nigde-Ulukısla oil shale samples and Batı Raman, Çamurlu, and Garzan crude oil samples were tested experimentally using retort and microwave heating techniques. Many parameters like heating time, porosity, water saturation were studied. To enhance the efficiency of the processes three different iron powders (i.e.; Fe, Fe2O3, and FeCl3) were added to the samples and the doses of the iron powders were optimized. While crude oil viscosities were measured to explain the fluid rheologies, since it is impossible to measure the shale oil viscosity at the laboratory conditions due to its very high viscosity, shale oil viscosities were obtained numerically by using the electrical heating option of a reservoir simulator (CMG, STARS 2007) by matching between the laboratory and numerical oil production and temperature distribution results. Then the field scale simulations for retorting of oil shale and crude oil fields were conducted. Since the microwave heating cannot be simulated by CMG, STARS, microwave heating was modeled analytically. In order to explain the feasibility of heating processes, an economic evaluation was carried out. The experimental, numerical, and analytical results show that field scale oil recovery from oil shales and heavy crude oils by electrical and electromagnetic heating could be economically viable. While microwave heating is advantageous from an operational point of view, retorting is advantageous if the technically feasibility of the study is considered.

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http://etd.lib.metu.edu.tr/upload/3/12609804/index.pdf
https://hdl.handle.net/11511/17840

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

B. Hasçakır, “Investigation of productivity of heavy oil carbonate reservoirs and oil shales using electrical heating methods,” Ph.D. - Doctoral Program, Middle East Technical University, 2008.