Abstract
Streamline simulation has been developed as an alternative to conventional Eulerian methods for the simulation of multiphase fluid flow in oil and gas reservoirs. In streamline simulation the saturation equations are solved over streamlines as a function of time-of-flight (TOF).We present a parallel implementation of this method. Furthermore, to increase the accuracy and speed of simulation, a new method called space-time conservation element and solution element (CE/SE) is implemented to solve the saturation equations along streamlines. CE/SE has many non-traditional features, including a unified treatment of space and time and stable numerical behavior with no need to introduce total variation diminishing schemes. As flux is a time-space property, in CE/SE, both time and space are discretized and treated on the same footing. In CE/SE, parameters and their derivatives are considered as independent variables and are computed simultaneously at each time-step that leads to local and global flux conservation. In addition by introduction of solution element and conservation element, cell fluxes can be calculated without extrapolation. To show the strength of method, the Buckley-Leverett equation is solved using CE/SE and compared to the finite volume method (FVM). Then, the method is employed in a streamline simulator to simulate water injection in a heterogeneous oil reservoir. CE/SE can capture the correct solution better than the FVM especially near sharp fronts. Though CE/SE is a second order method, its accuracy is higher than the third order Leonard's scheme and its order of convergence is higher than current methods in the literature. In addition, the simulation time of CE/SE is about 10 percent lower than the other second and third order methods we test.
| Original language | English |
|---|---|
| Pages (from-to) | 58-67 |
| Number of pages | 10 |
| Journal | Journal of Petroleum Science and Engineering |
| Volume | 96-97 |
| DOIs | |
| Publication status | Published - Oct 1 2012 |
| Externally published | Yes |
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Keywords
- Conservation Element and Solution Element (CE/SE)
- Finite volume method (FVM)
- Reservoir simulation
- Streamline simulation
- Time of flight (TOF)
- Total variation diminishing (TVD)
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Fuel Technology
Cite this
Application of space-time conservation element and solution element method in streamline simulation. / Siavashi, Majid; Pourafshary, Peyman; Raisee, Mehrdad.
In: Journal of Petroleum Science and Engineering, Vol. 96-97, 01.10.2012, p. 58-67.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Application of space-time conservation element and solution element method in streamline simulation
AU - Siavashi, Majid
AU - Pourafshary, Peyman
AU - Raisee, Mehrdad
PY - 2012/10/1
Y1 - 2012/10/1
N2 - Streamline simulation has been developed as an alternative to conventional Eulerian methods for the simulation of multiphase fluid flow in oil and gas reservoirs. In streamline simulation the saturation equations are solved over streamlines as a function of time-of-flight (TOF).We present a parallel implementation of this method. Furthermore, to increase the accuracy and speed of simulation, a new method called space-time conservation element and solution element (CE/SE) is implemented to solve the saturation equations along streamlines. CE/SE has many non-traditional features, including a unified treatment of space and time and stable numerical behavior with no need to introduce total variation diminishing schemes. As flux is a time-space property, in CE/SE, both time and space are discretized and treated on the same footing. In CE/SE, parameters and their derivatives are considered as independent variables and are computed simultaneously at each time-step that leads to local and global flux conservation. In addition by introduction of solution element and conservation element, cell fluxes can be calculated without extrapolation. To show the strength of method, the Buckley-Leverett equation is solved using CE/SE and compared to the finite volume method (FVM). Then, the method is employed in a streamline simulator to simulate water injection in a heterogeneous oil reservoir. CE/SE can capture the correct solution better than the FVM especially near sharp fronts. Though CE/SE is a second order method, its accuracy is higher than the third order Leonard's scheme and its order of convergence is higher than current methods in the literature. In addition, the simulation time of CE/SE is about 10 percent lower than the other second and third order methods we test.
AB - Streamline simulation has been developed as an alternative to conventional Eulerian methods for the simulation of multiphase fluid flow in oil and gas reservoirs. In streamline simulation the saturation equations are solved over streamlines as a function of time-of-flight (TOF).We present a parallel implementation of this method. Furthermore, to increase the accuracy and speed of simulation, a new method called space-time conservation element and solution element (CE/SE) is implemented to solve the saturation equations along streamlines. CE/SE has many non-traditional features, including a unified treatment of space and time and stable numerical behavior with no need to introduce total variation diminishing schemes. As flux is a time-space property, in CE/SE, both time and space are discretized and treated on the same footing. In CE/SE, parameters and their derivatives are considered as independent variables and are computed simultaneously at each time-step that leads to local and global flux conservation. In addition by introduction of solution element and conservation element, cell fluxes can be calculated without extrapolation. To show the strength of method, the Buckley-Leverett equation is solved using CE/SE and compared to the finite volume method (FVM). Then, the method is employed in a streamline simulator to simulate water injection in a heterogeneous oil reservoir. CE/SE can capture the correct solution better than the FVM especially near sharp fronts. Though CE/SE is a second order method, its accuracy is higher than the third order Leonard's scheme and its order of convergence is higher than current methods in the literature. In addition, the simulation time of CE/SE is about 10 percent lower than the other second and third order methods we test.
KW - Conservation Element and Solution Element (CE/SE)
KW - Finite volume method (FVM)
KW - Reservoir simulation
KW - Streamline simulation
KW - Time of flight (TOF)
KW - Total variation diminishing (TVD)
UR - http://www.scopus.com/inward/record.url?scp=84866666865&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866666865&partnerID=8YFLogxK
U2 - 10.1016/j.petrol.2012.08.005
DO - 10.1016/j.petrol.2012.08.005
M3 - Article
VL - 96-97
SP - 58
EP - 67
JO - Journal of Petroleum Science and Engineering
JF - Journal of Petroleum Science and Engineering
SN - 0920-4105
ER -