Grid design and numerical modeling of multiphase flow in complex reservoirs using orthogonal collocation schemes
| Autor: | O. A. Olafadehan, Moses O. Anubi, Kingsley E. Abhulimen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
02 engineering and technology
010402 general chemistry 01 natural sciences law.invention 020401 chemical engineering law Orthogonal collocation Cartesian coordinate system 0204 chemical engineering MATLAB lcsh:Petroleum refining. Petroleum products General Environmental Science computer.programming_language Mathematics Curvilinear coordinates Mathematical analysis Multiphase flow Finite difference method Triangular coordinates Grid Orthogonal grids 0104 chemical sciences lcsh:TP690-692.5 Pinch General Earth and Planetary Sciences computer Complex reservoir systems |
| Zdroj: | Applied Petrochemical Research, Vol 8, Iss 4, Pp 281-298 (2018) |
| ISSN: | 2190-5533 2190-5525 |
| Popis: | An advanced grid system design was developed to capture accurately the effects of geometrically complex features such as geological features (faults, pinch outs and inclined beddings) and well-related phenomenon (multilateral wells of general orientation) in triangular coordinates. Modeling these effects can have significant impact on the accuracy of the simulation and prediction of reservoir performance as well as reservoir fluid flow using conventional grid designs. The finite difference method provides additional difficulty in capturing geological features in typical reservoir flow and grid model simulators. Hence, the orthogonal collocation method was used for simulating multiphase reservoir flow equations in triangular curvilinear coordinates $$\left[ {\xi \left( r \right),\xi \left( \theta \right),\xi \left( z \right)} \right]$$ of domain [0,1] that were derived from Cartesian coordinates $$\left( {x,y,z} \right)$$ . This was to accommodate general three-dimensional deviated wells and complex reservoir geometry for multiphase flow of hydrocarbon in complex reservoir formations. Based on preliminary field data obtained from multinational oil and gas operator in Nigeria, the proposed model was used to predict saturation, production and petroleum productivity with time and distance in a MATLAB environment. The simulated plots revealed that pressure is parabolic at the center of the reservoir with coordinates $$\xi (r) =0.4257$$ , reflecting the impact of geological features in the pressure and production flow performance. |
| Databáze: | OpenAIRE |
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