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Keywords: heterogeneity
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Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Conference, September 28–October 2, 2020
Paper Number: SPE-199917-MS
... the viscosity of bitumen via solvent diffusion and latent heat transfer. However, similar to its thermal counterparts, the WSI recovery response is also highly sensitive to the underlying reservoir heterogeneities, e.g., shale barriers; in particular, the conformance of solvent chamber advancement can...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, March 13–14, 2018
Paper Number: SPE-189735-MS
... dimension along the y-axis is 100 m, meaning that only one-tenth of a typical horizontal wellbore is modeled. This modeling choice is justified as follow: (1) it is assumed the model dimension is greater than or equal to the representative length scale corresponding to the shale heterogeneity along the J...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, March 13–14, 2018
Paper Number: SPE-189731-MS
... productivity was closely aligned with expectations. Simulation models could not replicate Bhagyam performance without numerous major local modifications; hence long-term model predictions were not sufficiently reliable for business planning. Reservoir behaviour was initially attributed to severe heterogeneity...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, March 13–14, 2018
Paper Number: SPE-189738-MS
... heterogeneity molecular diffusion coefficient diffusion coefficient slab consolidated porous media society of petroleum engineers miscible displacement dispersion coefficient péclet number Upstream Oil & Gas Simulation coefficient longitudinal dispersion coefficient porosity packing power law...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, February 15–16, 2017
Paper Number: SPE-184980-MS
... computational effort would be valuable. In this paper, a reliable proxy for predicting SAGD performance is developed. This model can handle different operating pressure strategies and uses a distinctive approach to capturing the impact of reservoir heterogeneity. The approach is an approximate solution using...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, February 15–16, 2017
Paper Number: SPE-184984-MS
... pay thickness, have been taken from average values for several pads in Suncor's Firebag project. Reservoir heterogeneities are simulated by superimposing sets of idealized shale barrier configurations on the homogeneous model. The location and geometry of each shale barrier is parameterized...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, February 15–16, 2017
Paper Number: SPE-185001-MS
.... This research presents a mechanistic analysis of ES-SAGD in heterogeneous reservoirs in terms of cumulative steam-oil ratio (SOR) as a function of steam-chamber size. Simulation case studies for SAGD and ES-SAGD with normal hexane are conducted for geostatistical realizations of two types of heterogeneous...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, February 15–16, 2017
Paper Number: SPE-185012-MS
... using a heterogeneous dynamic simulation model. Predicted fluid production rates and reservoir pressure compared well with measured data. This study provides clearer insights into XHO performance. The improved understanding will result in a more reliable production forecast and an optimal development...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, June 7–9, 2016
Paper Number: SPE-180716-MS
... . Table 1 Reservoir properties and operating constraints for the base and heterogeneous models. Reservoir depth (m) 200 Rock compressibility (kPa -1 ) 9.6E-6 Reservoir thickness (m) 50 Rock heat capacity (J/m3*°C) 2.4E6 Reservoir size in X direction (m) 51 Initial oil saturation...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, June 7–9, 2016
Paper Number: SPE-180715-MS
...Abstract Abstract An approach based on artificial intelligence (AI) tools is being used to explore the influence of shale heterogeneities on SAGD production. In this project, the production data is derived from a set of synthetic SAGD reservoir simulations based on petrophysical properties...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, June 9–11, 2015
Paper Number: SPE-174411-MS
... investigation proppant enhancement thermal method SAGD field test 2d-sagd simulation producer well pair saturation heterogeneous case butane sagd canada bitumen operation heterogeneous reservoir society of petroleum engineers kpa injection SAP sor 2d-sap simulation permeability reservoir...
Proceedings Papers

Paper presented at the SPE Canada Heavy Oil Technical Conference, June 9–11, 2015
Paper Number: SPE-174501-MS
... results where steam rises and bitumen and condensate drains within the reservoir. Given the vertical and horizontal flow within the reservoir, SAGD performance is strongly affected by reservoir heterogeneity. In the field, poor SAGD performance commonly arises from two challenges: first, steam...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 10–12, 2014
Paper Number: SPE-170090-MS
... miscible displacement of heavy oil in a three dimensional heterogeneous porous medium pattern. In direct pore-level modeling, Navier-Stokes, Diffusion-Convection and Continuity equations, as the governing equations of dispersion, are directly applied and solved on the 3-D porous medium without any...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 10–12, 2014
Paper Number: SPE-170086-MS
... location (beyond the Polar Circle), considerable heterogeneity, compartmentalization of poorly cemented sandstones as well as the presence of extensive gas cap, bottom water, and thick permafrost zone. OJSC "Tyumenneftegaz", a subsidiary of Rosneft, has been responsible for the pilot works to seek...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 10–12, 2014
Paper Number: SPE-170060-MS
...Abstract Abstract The Lower Cretaceous McMurray Formation of Alberta, Canada, contains vast quantities of bitumen. Oil sands hosting this bitumen were deposited and reworked by tidal and fluvial currents, resulting in heterogeneous sediment distributions comprising cross-stratified and massive...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 10–12, 2014
Paper Number: SPE-170109-MS
... layers cannot be visually examined. In this study, Field 1 bitumen was more degraded than Field 2, and showed significant lateral heterogeneity in bitumen composition trends. Field 2 on the other hand had very little lateral variability in geochemical trends. Alkylnaphthalenes, alkylphenanthrenes...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 10–12, 2014
Paper Number: SPE-170112-MS
... to the presence of reservoir heterogeneities. A possible solution to address these challenges is the inclusion of flow control devices (FCDs) in SAGD completions. In order to quantify the impact of including FCDs in the SAGD process, this study was performed by numerical analysis with a model built from publicly...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 10–12, 2014
Paper Number: SPE-170145-MS
...Abstract Abstract Production of bitumen from heavy oil reservoirs is a complex process due to high oil viscosity and heterogeneity of reservoirs. Steam assisted gravity drainage (SAGD) process have been applied to Western Canadian bitumen reservoirs as a feasible and technically effective...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 10–12, 2014
Paper Number: SPE-170155-MS
... to viscous fingering, heterogeneity of the porous medium can be a source of instability in displacement processes which has significant interactions with the viscous forces. The coupling between viscous fingering and heterogeneity induced channeling has been deemed to enhance the instabilities by increasing...
Proceedings Papers

Paper presented at the SPE Heavy Oil Conference-Canada, June 10–12, 2014
Paper Number: SPE-170101-MS
... their effects on SAGD performance; however, a comprehensive and systematic investigation of the heterogeneous distribution (location, continuity, size, and proportions) of shale barriers and lean zones is still lacking. In this study, numerical simulations are used to model the SAGD process. Capillarity...

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