Upon the successful completion of the course, participants will:

• The main challenged in shaly sand reservoirs.
• Thin beds analysis techniques
• Clay mineralogy and how it affects reservoir petrophysical properties.
• Advanced logging tools for shaly sand reservoir charactrization
• Learn how to assemble and integrate reservoir and wellbore data to form a comprehensive and coherent reservoir description and rock quality discrimination.
• Use core and log data to identify and characterize flow units and reservoirs continuity
• Generate geologically-driven permeability-porosity relations for reservoir depositional settings
• fluid contacts
• Evaluate well productivity and identify production problems
• Perform OOIP estimates for reserves

This training course is suitable to a wide range of professionals but will greatly benefit:

• Petrophysicists
• Geo-Modelers
• Geologists (Exploration and Development)
• Sedimentologists

The course will not only presented by showing and interpreting the material in detail, but also the participants will work together using a real data to apply all the workflow and to project their previous knowledge and experience onto the course, they also encouraged to bring their own data so that real working examples can be reviewed and interpreted.

Module 1: Review of Log Interpretation techniques in Clean Formations

Key Topics:

• Introduction to formation evaluation
• Open Hole Logging. GR Logs - Spectral GR
• Shale volume calculations from GR
• Well Correlation and different maps extraction from log reading.
• Spontaneous Potential Log (SP). Vsh from SP - Rw from SP.
• Sonic log theory and Porosity Calculations.
• Density Log theory and porosity calculations.
• Neutron Log theory and porosity calculations
• Neutron & Density cross plots.

Module 2: Core analysis and applications in Shaly Sand Reservoirs

Key Topics:

• Open Hole Logging. GR Logs - Spectral GR
• Essential conventional core-log integration.
• Integrating different scales of measurement.
• Core porosity and grain density measurement.
• Core permeability measurement.
• Routine core porosity calibration of density, NMR, neutron and sonic logs.
• Routine core permeability calibration of NMR, porosity, etc.

Module 2: Electrical Properties for Core Data

Key Topics:

• Dean stark water saturation.
• Using RCA, SCAL & modern logs to solve Low Resistivity Low Contrast (LRLC) pay problems
• Electrical properties of rock (Archie exponents a,m,n), CEC and BQV, Resistivity index (RI). Formation resistivity factor (FRF).
• Application of electrical properties of rock for enhancing water saturation determination for both clastics and carbonate reservoirs.
• Irreducible water saturation (Swirr).
• Relative permeability curves measurement and applications.
• Wettability index using several methods, Wettability: impact on capillary pressure, relative permeability and Sor.
• Capillary pressure measurement (porous plate, centrifuge and MICP).

Module 3: Resistivity measurements

Key Topics:

• Resistivity Log theory and fluid identification
• FreshWater effect on Resistivity reading.
• Archie Equation for clean sand reservoirs
• Hingle Plot & Pickette Plot for shaly reservoirs.
• Shaly Sand Reservoirs Dual Water Model - Indonesian Model - Wax Smith Model.
• Thin Bedded Reservoirs RT Scanner Model - Thomas Stieber Model.
• Core Analysis.
• Quick Look interpretation.
• Nuclear Magnetic Resonance (NMR).
• Definition - Porosity Model - Theory of NMR - Permeability from NMR - MR Scanner - NMR limitations.

Module 4: Petrographic analysis (thin section, X-ray diffraction SEM/EDS) for shaly sand evaluation

Key Topics:

• Bore Hole Image.
• The nature of clay minerals and shale laminations and how they are distributed in shaly sands.
• Occurrence of clay minerals and shale laminations in reservoir rocks and relation to depositional environment and diagenesis.
• Integration of petrographic, core, and log data for evaluation of shaly sands
• Effects of clay minerals and shale laminations on log responses in shaly sands: various methods of shale content evaluation

Module 4: Use of advanced logs (NMR, BHI, Dip meters) integration with core data for purposes of evaluation

Key Topics:

• Bore Hole Image.
• Definition - Image Scale - Image Classification - Image Evolution - Common Image tools - FMI principles – OBMI – UBI - Image Artifacts - Image Normalization - Dipmeter (SHDT) - Image Interpretation.
• Coring and core analysis objectives.
• Core-handling, well site procedures, and preservation methods.
• Planning of the core program.
• Types of core samples.
• Wireline logs and core rule for porosity and permeability.
• Log calibration and correction with core data.
• Basics of core analysis.
• SCAL (special core analysis).
• Electrical properties of reservoir.
• Calibration of well data with core data.
• Rock typing methods
• Saturation height model
• FMI integration with core image.
• Core to log calibration

Module 5: Exercises

RECTUS attendance certificate will be issued to all attendees completing minimum of 80% of the total course duration