This five-day course covers the elements needed in the evaluation of fractured petroleum reservoirs from both an exploration and development point of view. A general sequence of study will be presented as well as the data types needed to complete the study.
Techniques presented will emphasize outcrop and subsurface rock data, petrophysical data, rock mechanic principles, and reservoir performance data. A multidisciplinary approach to the study of these reservoirs will be stressed. Participants should leave the course with knowledge of what controls short-term and long-term performance in fractured reservoirs and the types of data necessary to evaluate and manage them.
Introduction to fractured reservoirs and their development consequences.
General geomechanics and focus on fracture formation.
Demonstration experiment of fracture formation.
Fractured reservoir type classification and associated field development strategies.
Case history: prediction of open fracture location and orientation; field development planning.
Virtual field trip along natural fracture systems.
Fracture detection: borehole image tools.
Fracture detection: seismic methods.
Basement fractures and prediction of their location, orientation and depth.
Sealing fractures: prediction of location and orientation.
In-situ stress determination, relevance for field development planning.
Integrated final exercise.
A 5-Phase approach to static fracture descriptions
Fracture system origin
Reservoir properties of the fracture system
Fracture and matrix porosity interaction
Classification of fractured reservoirs
Acquiring and manipulating subsurface fracture data
Predicting and imaging 'sweet spots'
Scaling of fracture systems
Determining optimum well paths
Predicting reservoir problems by reservoir type
Preparing for reservoir simulation
Preferred workflows in fractured reservoir modeling
Critical properties of fractured basement reservoirs and how they differ from other types
Geoscientists and reservoir engineers who need to know how fractured reservoirs differ from conventional reservoirs and how to approach their study in a systematic manner will benefit from this course. Participants working with fractured basement reservoirs for ground water and/or geothermal resources should also benefit from the approaches discussed in this course.
Applied knowledge of reservoir geology and/or reservoir engineering is needed to gain the most from this class. However, this experience may come from petroleum, groundwater, or geothermal application.