MSc Petroleum Geoscience for Reservoir Development and Production / Course details
Year of entry: 2021
- View tabs
- View full page
Course unit details:
Key Interpretation Skills
|Unit level||FHEQ level 7 – master's degree or fourth year of an integrated master's degree|
|Teaching period(s)||Semester 1|
|Offered by||Department of Earth and Environmental Sciences|
|Available as a free choice unit?||Yes|
Part 1. Formation Evaluation is the study of the physical properties of rocks and their ability to store and flow hydrocarbon. This unit will introduce the fundamental principles of petrophysics and its importance to resource evaluation in hydrocarbon reservoirs. It focuses on how porosity, permeability and hydrocarbon saturation are measured in rock samples and from geophysical logs.
This course unit detail provides the framework for delivery in 20/21 and may be subject to change due to any additional Covid-19 impact. Please see Blackboard / course unit related emails for any further updates.
To develop an understanding of the key core and geophysical techniques used in the evaluation of reservoir rocks in the subsurface, including the principles of net-to-gross, porosity, permeability and saturation determination and the controls on their distribution.
- Describe the different ways in which geological and petrophysical data is collected during drilling and calculate net to gross from core data and using Vshale analysis
- Describe the geophysical properties that are measured by the gamma ray, neutron porosity, density, sonic and resistivity tools, their vertical resolution and the relationship of their properties to reservoir fluid distribution in the near-borehole environment
- Understand the genesis of porosity and the parameters that are used to describe it in 1, 2 and 3 dimensions
- Measure porosity using routine core analysis and from the density, neutron and sonic logs and describe the differences between the values
- Be able to measure permeability at multiple scales using Darcy’s Law and estimate permeability using measured pore volume
- Calculate net to gross from core data and using Vshale analysis
- Calculate saturation from resistivity logs using the Archie equation and alternative shaley-sand models
- Describe the different methods by which primary drainage is measured on core plugs and use the raw data to calculate Swi, m and n
- Assess uncertainty associated with the different methods used to determine porosity, permeability, Sw and net to gross and their impact on reservoir volumes
- Describe the principles of seismic acquisition, including the theory and common practice both onshore and offshore
- Demonstrate the techniques involved in seismic processing of 2D and 3D reflection seismic data
- Conduct basic seismic interpretation
- Identify and evaluate other advanced geophysical techniques, their uses and limitations
1. What is petrophysics?
2. Drilling, datums, well orientation and data types
3. Lithological interpretation of wireline logs
4. Pore systems in carbonate and clastic rocks
5. Porosity determination from core and wireline logs
6. Permeability and permeability transforms
7. Rock physical models
8. Saturation determination from core and wireline logs
9. Special logs
10. Saturation in non-Archie reservoirs
1. Acquisition of, and standard processing involved in, land and marine 2D and 3D reflection seismic data.
2. Advanced seismic techniques (pre-stack depth migration, synthetic seismograms, VSPs, AVO, etc).
3. 2D and 3D seismic interpretation.
4. Direct Hydrocarbon Indicators (DHI's).
5. Seismic time to depth conversion and map contouring.
6. Integration of aeromagnetic, gravity and remotely-sensed data.
Teaching and learning methods
This module will be delivered as 9 sessions of 3 hours each integrating lectures as practical interpretation, plus a 2 hour, paper-based integrated petrophysical assessment
In-class petrophysical interpretation of core analysis and wireline log data (0%)
Open book online assessment (seismic interpretation), 1.5hr (50%)
In course assignment (petrophysics) (50%)
In-class petrophysical interpretation of core analysis and wireline log data (0%) - Discussion of solution in class and posted on Blackboard
Open book online assessment (seismic interpretation), 1.5hr (50%) - Marked online assessment
In course assignment (petrophysics) (50%) - Marked assignment
|Scheduled activity hours|
|Practical classes & workshops||15|
|Independent study hours|
|Catherine Hollis||Unit coordinator|