Unit PETROLEUM GEOLOGY 1 - PETROPHYSICS AND WELL LOG INTERPRETATION
- Course
- Geology for energy resources
- Study-unit Code
- A002110
- Location
- PERUGIA
- Curriculum
- In all curricula
- Teacher
- Massimiliano Porreca
- Teachers
-
- Massimiliano Porreca
- Hours
- 42 ore - Massimiliano Porreca
- CFU
- 6
- Course Regulation
- Coorte 2021
- Offered
- 2022/23
- Learning activities
- Caratterizzante
- Area
- Discipline geologiche e paleontologiche
- Academic discipline
- GEO/03
- Type of study-unit
- Obbligatorio (Required)
- Type of learning activities
- Attività formativa monodisciplinare
- Language of instruction
- English
- Contents
- Petrophysics and Well Log interpretation
1. Rock properties
General introduction on rock properties: permeability, porosity, density.
The distribution of porosity and permeability in sedimentary rocks
Factors influenced porosity and permeability: grain-size, grain shape, texture and fractures
Early and burial diagenesis products and their influence on porosity and permeability (compaction).
Basic concepts of petrophysics and interaction rock-fluids: fracture and matrix relations
2. Production geology – Pressure System
Basic definitions
Pore pressure and pressure regime
Origin and quality control of pressure data – Pressure evaluation
Origins of sub-normal pressure
Origins of abnormal Pressure
Pressure-temperature relationships
3. Rock properties measurements
Core vs. Log (scaling effects, overburden)
Vertical depth deviation (calculation of well deviation)
Wireline (open hole, cased hole)
while-drilling
Measurements of rock properties:
Rock evaluation (Well logging)
Lithological tools (caliper, gamma ray, potential SP, .... )
Porosity tools (density, neutron, sonic)
Resistivity tools (saturation: induction, galvanic)
Pressure measurements (fluid contacts OWC, permeability)
Calculation Methodology:
Volume shale calculation
Porosity
Water saturation (Archie)
Measurements of fluid/gas properties:
well test, pressure test, production monitoring
4. Fault and fracture analysis
Correlation and layering, faults, vertical and horizontal compartmentalization
Fault sealing analysis (FSA)
Fracture characterization
Fracture and fluid flow - Reference texts
- Knut Bjørlykke (2010) Petroleum Geoscience: From Sedimentary environments to Rock Physics. Springer
Richard C. Selley (1998) Elements of Petroleum Geology (Second edition). AP
Jon Gluyas and Richard Swarbrick (2004) Petroleum Geoscience. Blackwell
Ellis, Singer (2007). Well Logging for Earth Scientists. Springer Science & Business Media - Educational objectives
- Knowledge of the main petrophysical characteristics of rocks and sediments.
Decision making capacity for the evaluation of petroleum resources. - Prerequisites
- Good knowledge of geological and petrophysical principles.
Knowledge of mathematical and physical bases - Teaching methods
- Frontal lessons, practical computer exercises and educational excursions.
- Learning verification modality
- Classroom exercises and final exam.
- Extended program
- Petrophysics and well Log interpretation
(I Semester, A.Y. 2018-2019, II Year)
Dott. M. Porreca
(42 hours)
1. Rock properties
• General introduction on rock properties: permeability, porosity, density.
• The distribution of porosity and permeability in sedimentary rocks
• Factors influenced porosity and permeability: grain-size, grain shape, texture and fractures
• Early and burial diagenesis products and their influence on porosity and permeability (compaction).
• Basic concepts of petrophysics and interaction rock-fluids: fracture and matrix relations
2. Production geology – Pressure System
• Basic definitions
• Pore pressure and pressure regime
• Origin and quality control of pressure data – Pressure evaluation
• Origins of sub-normal pressure
• Origins of abnormal Pressure
• Pressure-temperature relationships
3. Rock properties measurements
• Core vs. Log (scaling effects, overburden)
• Vertical depth deviation (calculation of well deviation)
• Wireline (open hole, cased hole)
• while-drilling
• Measurements of rock properties:
• Rock evaluation (Well logging)
• Lithological tools (caliper, gamma ray, potential SP, .... )
• Porosity tools (density, neutron, sonic)
• Resistivity tools (saturation: induction, galvanic)
• Pressure measurements (fluid contacts OWC, permeability)
• Calculation Methodology:
• Volume shale calculation
• Porosity
• Water saturation (Archie)
• Measurements of fluid/gas properties:
• well test, pressure test, production monitoring
4. Fault and fracture analysis
• Correlation and layering, faults, vertical and horizontal compartmentalization
• Fault sealing analysis (FSA)
• Fracture characterization
• Fracture and fluid flow
Exercise with 2d and 3d modelling software (Move) • Workflow of a reservoir analysis using Move