3D Reservoir Modeling of Naturally Fractured Reservoirs
|Dr Tim Wynn (AGR TRACS International Ltd, Aberdeen, United Kingdom)|
|Geology – Geological Modeling|
|5 CPD points|
DENSITY FRACTURES GEOCELLULAR INTEGRATION POROSITY PRODUCTION RESERVOIR CHARACTERIZATION WELLS WORKFLOWS
Reservoir modeling for field development planning is a well-accepted process but its application to fractured reservoirs requires specific considerations that are less commonly known. This course describes a practical methodology for building 3D static (‘geocellular’) reservoir models for naturally fractured reservoirs using standard modeling software, covering such considerations.
The issues addressed include the integration of log, core and seismic data, the sourcing and application of in situ stress data, the process of defining and building the static reservoir model itself and the creation of output in a form appropriate for dynamic modeling using dual porosity reservoir simulators where appropriate. More complex workflows using discrete fracture networks will also be summarized, as will general issues of fracture description, uncertainty-handling and volumetric.
Upon completion of the course, participants will:
- Be aware of practical workflows for modelling naturally fractured reservoirs using standard industry software;
- Understand the data-gathering requirements and methodology for characterizing fractured reservoirs;
- Appreciate the special distinction of naturally fractured reservoir models compared to standard single-porosity models.
- Styles of natural fracturing
- Describing fractures from core and log data
- Predicting fracture density away from wells
- Integrating production data
- Model-building workflow for implicit fracture representation
- Discrete fracture networks
- In place volumes and preparation of output to simulation
- Static-dynamic model iteration
Geoscientists newly working in naturally fractured reservoirs and petroleum engineers providing input to, or receiving output from fractured reservoir models.
Participants should have and in depth understanding of the oil business and a good understanding of conventional reservoir characterization and modelling techniques. No software will be used interactively during the day and no hands-on modelling experience is therefore required. However, it would be beneficial.
About the instructor
Dr Tim Wynn is a Reservoir Geologist with 26 years experience in reservoir development and reserves evaluation studies with a focus on the geological and geomechanical aspects of naturally fractured reservoir characterisation and modelling. With a PhD in structural geology at Imperial College, London he joined GeoScience Limited in 1994 and spent 6 years working on fractured reservoir characterisation projects for the nuclear and oil industries. He then joined ICE Energy working on wellbore stability problems until the merger of ICE Energy with TRACS International in 2001. In 2008 TRACS became AGR TRACS after being acquired by AGR. During his career, Wynn has worked on a wide variety of international consultancy projects and delivered many training courses.
This broad experience over many years has enabled Wynn to understand the key issues for people working in naturally fractured reservoirs including biases in interpretation, inappropriate modelling techniques and understanding potential mitigations during the development and management of naturally fractured reservoirs. Wynn is a member of the EAGE, SPE, Geological Society, London and PESGB and has published a number of papers since 1995 on structural geology, naturally fractured reservoirs and geomechanics. He is also a technical peer reviewer for the EAGE and SPE.
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