STARS - Thermal & Advanced Processes Reservoir Simulator
STARS is the undisputed industry standard in thermal and advanced processes reservoir simulation. STARS is a thermal, k-value (KV) compositional, chemical reaction and geomechanics reservoir simulator ideally suited for advanced modelling of recovery processes involving the injection of steam, solvents, air and chemicals. The robust reaction kinetics and geomechanics capabilities make it the most complete and flexible reservoir simulator available.
- Accurately model the physics of all in-situ recovery processes
- Multi-scale modelling from core floods to field-scale
- Increase confidence in field development plans and support capital expenditures
- Modelling for dispersed components and simulate formation of emulsions and foams, and predict asphaltene precipitation/deposition
- Design accurate SAGD well pairs
- Seamless integration with CMOST for rapid, accurate history matches and uncertainty analyses, while leveraging limited engineering time
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STARS enables the simulation of simple to highly complex thermal recovery processes, such as steamflood or SAGD where accurate steam distribution and conformance in the reservoir provides insight into efficiency of the recovery process, wellbore and caprock integrity issues, thereby allowing operators to mitigate the risk and environmental impact while simultaneously maximizing recovery. As industry implements more complex thermal projects, STARS remains the choice for advanced and experimental recovery processes, including conductive and radio-frequency (RF) heating.
- Industry standard for thermal heavy oil modelling
- Robustly models SAGD, ES-SAGD, hot solvent injection, thermal VAPEX and cyclic steam injection
- Simulate shale breakage after it is heated and breaks to allow fluid to flow
- Multi-scale modelling from core floods to field-scale
- Dynamic monitoring of temperature along the wellbore provides greater flexibility in steam trap control and prevents steam breakthrough
- Optimize SAGD wellbore design through improved reporting on conductive heat transfer between different flow streams, pressure at various points across a FCD
- Optimize operational and completion strategies to reduce steam-oil ratio and increase NPV and ultimate recovery with CMOST
- Calibrate and history match models with field data including temperature logs and 4D seismic with CMOST
- Decrease interfacial tension and wettability, and recover more oil
- Simulate polymer to improve the mobility ratio of the flood front
- Full physics capabilities, to support modelling of a range of chemical process combinations
- Mechanistically model complex foam-flooding physics, or full-field enhanced low salinity waterfloods
- Simulate formation and breaking up of emulsions and foams
- With CMOST, optimize chemical EOR operational parameters to increase recovery and reduce chemical costs
FlexWell, a complex flexible wellbore modelling tool, simulates advanced well completions and well geometry, and accurately models complex wellbore physics associated with heat transfer and fluid flow in the wellbore and its interaction with the reservoir, which cannot be modeled by standard source-sink or segmented well.
- Modelling of complex wellbore completion configurations
- Instrumentation cables and heater cables
- Flow control devices - vendor specific and designs
- Parallel or concentric tubing strings
- Inflow and outflow control devices and packers
- Accurately simulate well geometry and steam configuration
- Model undulating wells through multiple layers
- Improve fluid mobility by modelling multiple heater cables
STARS is coupled to third-party surface network modelling software to allow simultaneous modelling of the reservoir and the surface network. Coupling surface network modelling with reservoir simulation provides insight into the complexities of the subsurface while the network simulator accounts for changing network conditions.
- Seamless integration with third-party surface network modelling software
- Predict full-field performance
- Ability to model single or multiple reservoirs
- Multi-phase flow in both the gathering system and wellbore
- Use CMOST to optimize both the reservoir and surface network system simultaneously
- Porosity-dependent and solid-component-dependent geomechanical properties
- Model subsidence, compaction and dilation behaviour
- Simulate stress-induced phenomena
- Elastic and plastic deformation
- Shear dilatancy of produced and injected fluids
- Near wellbore formation collapse
- Sand production
New Feature Highlights:
IMPORTANT NOTICE: CMG no longer tests, ships or supports software releases on the Windows XP operating system. Customers using Windows XP are recommended to use the 2014 release or older.
All CMG simulators have a base set of common modules to ensure that compatibility, speed and quality of output remains consistent.
Adaptive Implicit Formulation
Seamless integration with CMOST
64-bit Windows & Linux
Introduction to CMG's Modelling WorkflowsIntroduces the latest features of the pre- and post-processing technologies used with CMG simulators.
Introduction to Thermal EOR ModellingIntroduces component design and other advanced features available in STARS.
Best Practices for SAGD SimulationReviews practical aspects related to SAGD that affect simulation run time and results.
SAGD SimulationProvides detailed instruction on the complexities of simulating SAGD, an extensively used bitumen recovery process, in STARS.
Solvents-Additives for EOR ModellingReviews basic concepts of the solvent-assisted recovery processes for heavy oil and bitumen and how to simulate these processes using STARS.
Advanced Wellbore ModellingLearn concepts related to the advanced wellbore model (FlexWell) and develop strategies for simulation of wellbore clean-up, SAGD circulation and SAGD reservoir response using different wellbore configurations.
Practical SCAL for Heavy Oil ReservoirsDiscusses the concepts and different elements of SCAL data, and how it changes as a function of a reservoir's heterogeneity and wettability.
Numerical Tuning Techniques for CMG SimulatorsExamines specific analysis techniques, such as analyzing numerical output parameters, fine tuning of the input data, diagnosis of small timestep problems and non-convergence.
Introduction to Thermal and Chemical EOR ModellingLearn information and techniques required to build simple STARS datasets for thermal and isothermal chemical EOR simulation purposes. This course is only available in the UK.
Foamy Oil ModellingCovers theoretical concepts and different appraoches to modelling foamy oil behaviour in heavy oil reservoirs and their effect on production, typically observed in field and lab experiments.
Chemical EOR SimulationIntroduces basic chemical flooding concepts and how to simulate this process using STARS.
Chemical FloodingIntroduces basic concepts of chemical flooding and how to simulate this process in STARS. This course is only available in South America.Air Injection ModellingLearn key reservoir eingineering aspects of air injection based improved oil recovery processes.
GeomechanicsIntroduces geomechanical concepts from simple dilation/compaction table input to complex finite element strain/stress approaches.
Modelling of Carbonate Naturally Fractured ReservoirsExplores the concepts of wettability, Pc and Kr curves of carbonate reservoirs.Thermal and Advanced Processes SimulationReviews basic concepts of thermal EOR processes and how to simulate in STARS, plus provides detailed instruction on the complexities of simulating these extensively used oil recovery processes. This course is only available in South America.
Numerical Tuning Case Study - a summary of SPE-165511 which discusses an innovative numerical tuning workflow for a Canadian full-field thermal heavy oil project.
CMG hosts regular webinars discussing the latest advancements in our simulation software. If you'd like to view any of our previous webinars, please log into the User Area (teal tab at the top right) and select the appropriate session. For STARS, you may be particularly interested in the following presentations:
- The Role of Coupled Geomechanical Modelling in Reservoir Simulation November 2015
- What's New in CMG's 2015 General Release July 2015
- Advancements in Numerical Performance and Simulation Speed-up June 2015
- Modelling & Optimization of Advanced Wellbore Completions in SAGD April 2015
CMG regularly contributes technical papers to SPE conferences and workshops. Below is a small selection of technical papers authored or co-authored by CMG where STARS was used.
- SPE 174494 Modelling of Non-Condensable Gas Injection in SAGD Process: Important Mechanisms and the Impact on Field Scale Simulation Models
- SPE 170051 Evaluating the Importance of Geomechanical & Reservoir Properties when History Matching 4D Seismic Data in SAGD Wells
- SPE 170189 Impact of Fractures Characterization, Wettability and Hysteresis on Thermal Recovery Processes in Carbonate Naturally Fractured Reservoirs
- SPE 170130 Quantifying the Uncertainty Associated with Caprock Integrity during SAGD using Coupled Geomechanics Thermal Reservoir Simulation
- SPE 170076 SAGD Wellbore Completion Optimization using Scab Liner and Steam Splitter