Geology - Geological Modeling

3D Reservoir Modeling of Naturally Fractured Reservoirs

 

Instructor

  Dr Tim Wynn (AGR-Petroleum Services, Aberdeen, United Kingdom)

Duration

  1 day

Disciplines

  Geology – Geological Modeling

Level

  Advanced

Language

  English

EurGeol

  5 CPD points

Keywords

 
 DENSITY   FRACTURES   GEOCELLULAR   INTEGRATION   POROSITY   PRODUCTION   RESERVOIR CHARACTERIZATION   WELLS   WORKFLOWS 

 

Course description

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.

 

Course objectives

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.

 

Course outline

  1. Styles of natural fracturing
  2. Describing fractures from core and log data
  3. Predicting fracture density away from wells
  4. Integrating production data
  5. Model-building workflow for implicit fracture representation
  6. Discrete fracture networks
  7. In place volumes and preparation of output to simulation
  8. Static-dynamic model iteration

 

Participants' profile

Geoscientists newly working in naturally fractured reservoirs and petroleum engineers providing input to, or receiving output from fractured reservoir models.

 

Prerequisites

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

Tim Wynn is a reservoir geologist with 21 years experience in the geological and geomechanical aspects of 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. Since then, Tim has worked on a wide variety of international consultancy and training projects with TRACS, including geocellular modelling and in-situ stress characterisation of fractured reservoirs. In 2008 TRACS became AGR-TRACS after being acquired by AGR Petroleum. Tim is a member of the EAGE, SPE, Geological Society London, PESGB and AGU.

 

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