Oil and Gas
This course provides a practical, integrated approach to characterising, classifying, analysing and modelling natural fractures. It uses lectures, modelling software and field examples to deliver an understanding of: geomechanics; the building and use of simple conceptual and more complex finite difference models; and the impact of fractures on well and reservoir productivity and recovery.
Duration and Training Method
Participants will learn to:
- Characterise the presence or influence of fractures from a multitude of data sources(e.g. openhole logs, core, image logs, mud losses, PLT’s, well tests and production performance).
- Construct simple conceptual models of fracture origins, types and distributions for use as input to reservoir modeling.
- Plan preliminary proposals for selecting the optimal modeling process for specific modeling objectives.
- Develop simplified implicit fracture property models (i.e. fracture porosity, fracture permeability and sigma) in geocellular modeling packages.
- Integrate simplified fracture properties into a finite difference simulator.
- Evaluate fracture / matrix fluid exchange mechanisms of imbibition and gravity drainage.
- Instigate and run a finite difference simulator indual porosity / dual permeability mode.
- Basics (What is a fractured reservoir, typical attributes and behaviours, economic impact)
- Origin and characteristics of fractures (classification and fill types, modes of formation, stresses and rock failure, systems – natural, regional, fold / fault related)
- Sampling and analysis of natural fractures (Detection, density, aperture, distribution, orientation, permeability, sets, type and fill)
- Geomechanics (Rock properties, failure criteria, influence of in-situ stresses)
- Modelling (Geocellular reservoir models, calculating fracture permeability in a property grid, analytical effective fracture permeability tensor, fracture matrix interaction, percolation theory, fracture system connectivity, representative elementary volumes, discrete fracture networks, upscaling)
- Dynamic data and simulation (rock properties, well testing and productivity, recovery mechanisms, introduction to dual porosity and dual permeability simulator modes, introduction to streamline simulators and discrete fracture network modelling, management of fractured reservoirs)
Who Should Attend and Prerequisites
The course is designed for practicing mid- to senior- level geologists and reservoir engineers. Geophysicists and petrophysicists aware of reservoir modeling techniques would also benefit.
Tim is the Principal Geologist and Geomechanics Specialist at TRACS International. He has over 29 years of experience in in geological and geomechanical reservoir characterisation and modelling, project management, asset evaluations (CPRs, Audits), and training aimed at supporting decision making in energy companies.
Upon completion of his PhD in 1994, Tim worked as Structural Geologist with GeoScience Limited for 6 years, before working as Geoscientist for ICE Energy Ltd, which was later acquired by TRACS International. Tim has worked for TRACS since 2001, progressing from Reservoir Geologist to his current role.
Tim has considerable experience of characterising and modelling clastic, carbonate, and basement reservoirs in the North Sea, Middle East, Europe, Russia, South America, Africa, and SE Asia. He has a particular interest in characterising and modelling fractured reservoirs and in the application of geomechanics to wellbore stability, reservoir stimulation and reservoir management. He has applied these skills to hydrocarbon, Carbon Capture & Storage (CCS) and geothermal projects and has published technical papers on many of these topics, Tim is also a Technical Paper Reviewer for the Geological Society, London, SPE, and EAGE and an Editorial Board member of Petroleum Geoscience.
Affiliations and Accreditation
PhD Imperial College, London - Structural Geology
BSc Portsmouth Polytechnic – Geology
CGeol- Chartered Geologist
Fellow of the Geological Society, London; Technical Paper Reviewer, Petroleum Geoscience Editorial Board Member
Member of the PESGB
Member of the SPE; Technical Paper Reviewer
Member of the EAGE; Technical Paper Reviewer
N445: The Subsurface Applications of Geomechanics
N548: Reservoir Modelling for Storage
N923: Fractured Reservoir Characterisation and Modelling