|
|
ECLIPSE 2008.1
The 2008.1 release of ECLIPSE reservoir simulation software both extends previous functionality and introduces new capabilities.
New developments and enhancements
- Complex well modeling supported by looped multisegment wells
- Results and property manipulation using dynamic regions
- Advanced field management through user-defined arguments and quantities
- Enhanced oil recovery via foam and polymer modeling
- Accuracy and performance enhancements in asphaltene modeling
- Naturally fractured media modeling extensions
- Thermal simulation performance and capability improvements
- Advanced workflows through Petrel software integration
Complex Well Modeling
Looped multisegment wells
ECLIPSE software continuously supports the ever-increasing sophistication of wells and completions. This extension to the multisegment well model allows accurate representation of configurations that are difficult to model. In looped flowpaths, the inflow from a reservoir typically enters the annulus and passes through control valves into the tubing. When there is more than one inflow control device (ICD) between packers in the annulus, the new software capability removes the previous assumption of an obstructed annulus.
Property Manipulation
Dynamic regions
This new option empowers the user to exercise regions statistically (e.g., all grid blocks within 10 km of well W1) and dynamically (e.g., all grid blocks with component concentration greater than a certain threshold), allowing recomputation of region values associated to cells. This may involve conditional logic. Fluid-in-place results and summary quantities pertaining to dynamic regions can be output by the simulator. For example, while simulating a polymer flood, the user could create a region set based on polymer concentration, visually inspect the movement of this dynamic region in 3D, and report fluid-in-place information for the region set.
Advanced Field Management
User-defined arguments and quantities
User-defined quantities (UDQ) were introduced in ECLIPSE 2007.1 as mathematical functions of built-in quantities. They empowered users with significant extensibility in exercising conditional logic (ACTIONX) for example, define incremental NPV as a UDQ and simulate a field management strategy that drills a new well, as necessary, to maintain NPV above a specified economic limit. This new version makes all summary vectors available to UDQ definition and breaks new extensibility ground by allowing usage of UDQ as arguments in keywords (UDA). For example, by setting the target water injection rate of wells in an irregular 5-spot pattern as a mathematical function involving weights inversely correlated to their water tracer rates, the user can simulate waterflood optimization, minimizing group water cut while honoring the production target.
Enhanced Oil Recovery
Foam
ECLIPSE software is undertaking a multiyear set of developments in an effort to become the leader in enhanced oil recovery (EOR) modeling. In the 2008.1 release, the foam option has been extended to allow selection of the phase for foam transport and the type of model for gas mobility reduction resulting from foam.
Polymer
Non-Newtonian rheology has been accommodated by the implementation of the Herschel-Bulkey model.
Asphaltene Modeling
Accuracy and performance improvements
The accuracy, speed, and robustness of the asphaltene modeling facility have been improved in this release. This option also has the following new capabilities:
- wettability change on relative permeability
- extra parameter(s) for the precipitation
- plugging control by asphaltene volume fraction deposit and flocs concentration.
Naturally Fractured Media
Vuggy carbonates
A specialist version of multiporosity has been added to address vuggy carbonates as a triple porosity (matrix, fracture, vugs) system.
Discretized matrix gravity drainage
An option to use the matrix cells as a vertical discretization of an individual block of matrix and connect them all to the fracture has been added for the modeling of gravity drainage.
Thermal Simulation
Performance and capability
More capabilities have been added and a number of studies have been carried out, including in-situ combustion and SAGD sensitivity. The John Appleyard linear solver has been further tuned, building on the 2007.1 leap to advance ECLIPSE Thermal within the same region of performance as its main competitor.
Workflow Enablement
Integration with Petrel software
The collaboration between ECLIPSE and Petrel software continues to enable workflows. This includes efficient design of multisegmented wells in this release with the addition of automatic looped flowpaths generation.
|
|
|
