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SCRF 2012 Erosion in Surface-based Modeling Using Tank Experiment Data Siyao Xu, Andre Jung, Tapan Mukerji, Jef Caers.

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Presentation on theme: "SCRF 2012 Erosion in Surface-based Modeling Using Tank Experiment Data Siyao Xu, Andre Jung, Tapan Mukerji, Jef Caers."— Presentation transcript:

1 SCRF 2012 Erosion in Surface-based Modeling Using Tank Experiment Data Siyao Xu, Andre Jung, Tapan Mukerji, Jef Caers

2 SCRF 2012 Subseismic scale fine-grained layers Erosion in Reservoirs: Removed Flow Barriers Erosion on fine-grained layers in a lobate reservoir significantly affect reservoir performance Eroded fine-grained layer by following events After Alpak et. al. 2010

3 SCRF 2012 Erosion in Surface-based Modeling: Uncertainty of Geometry Objective: –Characterize uncertainty of erosion geometry –Simulate erosion in surface-based model Subseismic scale fine-grained layers Eroded fine-grained layer by following events After Alpak et. al. 2010

4 SCRF 2012 Review of Surface-based Modeling: Advantages Can represent complex geometry Realistic model with low computational costs After Bertoncello et. al. 2011 Statistics & rules from data and knowledge Stack Surfaces to construct 3D model Sequentially generate geometry with statistics and place with rules T

5 SCRF 2012 After Bertoncello et. al. 2011 Statistics & rules from data and knowledge Stack Surfaces to construct 3D model Sequentially generate geometry with statistics and place with rules T Review of Surface-based Modeling: Challenges Limited knowledge of erosion geometry Where to get data ?

6 SCRF 2012 Experiment data for reservoir modeling –Detailed information of the processes –How to use it to build a reservoir model? Distributary delta experiment –Chris Paola, National Center for Earth-surface Dynamics(NCED)/St. Anthony Falls Laboratory (SANL) SCRF 2012 Tank Experiment Data

7 SCRF 2012 2.5 m SCRF 2012 Tank Experiment Data: Settings 5 m Tank Infeed point

8 SCRF 2012 T = 15 s T = 30 s SCRF 2012 Tank Experiment Data: Two Types of Data 1. Overhead photos taken at intervals of 15 s T = 0 s

9 SCRF 2012 Tank Experiment Data: Two Types of Data 2. Elevation lines measured at 2 min interval –Measured along three lines –Distal : 2 m to the infeed point Infeed point 2 m

10 SCRF 2012 Tank Experiment Data: Two Types of Data 2. Elevation lines measured at 2 min interval –Measured along three lines –Medial : 1.75 m to the infeed point Infeed point 1.75 m

11 SCRF 2012 Tank Experiment Data: Two Types of Data 2. Elevation lines measured at 2 min interval –Measured along three lines –Proximal : 1.5 m to the infeed point Infeed point 1.5 m

12 SCRF 2012 Horizontal geometry –Channels: belts of constant width –Lobes: projecting oval shape Tank Experiment Data: from Overhead Photos

13 SCRF 2012 Vertical geometry –Patterns of erosion - deposition Tank Experiment Data: from Elevation Lines Old Elevation New Elevation

14 SCRF 2012 Vertical direction –Patterns of erosion - deposition Tank Experiment Data: from Elevation Lines Old Elevation New Elevation Erosion: New Elevation Is LOWER than old elevation Deposition: New Elevation Is HIGHER than old elevation No event

15 SCRF 2012 Tank Experiment Data: from Elevation Lines Elevation

16 SCRF 2012 Tank Experiment Data: Visualize Geometry Horizontal Location is maintained Time Sequence Elevation Height of geometry is maintained

17 SCRF 2012 Tank Experiment Data: Visualize Geometry Time Sequence Elevation New geometry is above previous representing temporal sequence Significant Geometry is maintained

18 SCRF 2012 Tank Experiment Data: Visualize Geometry A larger deposition occurs subsequently Time Sequence Elevation

19 SCRF 2012 Correlated −erosion – deposition geometry How to characterize the statistics? Tank Experiment Data: Visualize Geometry Correlated geometry pairs

20 SCRF 2012 Tank Experiment Data: Interpretation and Characterization 1. From channels: erosion dominated

21 SCRF 2012 Tank Experiment Data: Interpretation and Characterization 1. From channels: characterize with DIMENSIONLESS ratio

22 SCRF 2012 2. From lobes: deposition dominated but with light erosion SCRF 2012 Tank Experiment Data: Interpretation and Characterization

23 SCRF 2012 Tank Experiment Data: Interpretation and Characterization 2. From lobes: characterize with DIMENSIONLESS ratio

24 SCRF 2012 3. From lobes: deposition without erosion characterized with probability SCRF 2012 Tank Experiment Data: Interpretation and Characterization

25 SCRF 2012 Model Building: Generate Geobody Generate boundary along a centerline Centerline is controlled by multiple geological meaningful points Channel Intermediate PointsChannel End Thickest Point Lobe End Boundary Control Point Channel Source

26 SCRF 2012 Model Building: Generate Geobody

27 SCRF 2012 Model Building: Place Geobody Distance to source Distance to previous lobe Deposited thicknes Combined Combined Probability Map Next lobe location is picked-up using the combined P map 1 0

28 SCRF 2012 Simulation Results: Reproduction of Erosion-Deposition Processes Section 1 Section 2

29 SCRF 2012 Simulation Results: Reproduction of Erosion-Deposition Processes Section 1 Section 2

30 SCRF 2012 Simulation Results: Reproduction of Erosion-Deposition Processes Section 1 Section 2

31 SCRF 2012 Simulation Results: Reproduction of Erosion-Deposition Processes Section 1 Section 2

32 SCRF 2012 Simulation Results: Reproduction of Erosion-Deposition Processes Section 1 Section 2

33 SCRF 2012 Simulation Results: Reproduction of Erosion-Deposition Processes Section 1 Section 2

34 SCRF 2012 Simulation Results: Reproduction of Erosion-Deposition Processes Section 1 Section 2

35 SCRF 2012 Simulation Results: Reproduction of Erosion-Deposition Processes Section 1 Section 2

36 SCRF 2012 Simulation Results: Complex Surfaces Realization of 30 events

37 SCRF 2012 Simulation Results: Uncertainty of Surfaces Cross sections orthogonal to the flow direction Colors Identify Different Events

38 SCRF 2012 Simulation Results: Uncertainty of Surfaces Cross sections along the flow direction Colors Identify Different Events Flow Direction

39 SCRF 2012 Simulation Results: Reproduction of Input Statistics The probability of lobe with erosion is reproduced f = 0.32 Correlated erosion – deposition are reproduced ExperimentSimulation

40 SCRF 2012 Simulation Results: Reproduction of Input Statistics Q-Q plots

41 SCRF 2012 Simulation Results: Reproduction of Input Statistics Q-Q plots

42 SCRF 2012 Conclusions and Future Works Conclusions –Geometry information of erosion – deposition is extracted from tank experiment data –Realization of surface-based model can reproduce input statistics from tank experiment Future works –How to combined horizontal and vertical information? –How to extract information to improve the p- maps

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