training specialists to the upstream oil and gas industry

Shaly-Sand Petrophysics

Book now button

Course Description

Shaly Sand Formations, which are also called low-contrast or low-resistivity pay zones are present in all the petroleum basins around the world in particular the river delta depositional environments.

The course is designed for

  • Petrophysicists
  • Exploration Geologists
  • Production Geologists
  • Exploration Managers
  • Well-site Geologists
  • Operations Geologists
  • Geophysicists
  • Well Data Managers
  • Geotechnicians

Learning objectives

  • To introduce participants to the complexities of Shaly Sandstone Reservoirs / Low-contrast or Low Resistivity reservoirs.
  • To determine and review of reservoir parameters using highly advanced petrophysical methods such as Dual Water, Waxman-Smiths, Simandoux and Juhasz methods.
  • To understand the various Shaly-sand petrophysical models such as laminated clay, dispersed clay.

Course outline

For more information on this course please contact us.

Shale laminations in reservoir rocks
Relation to depositional environment
Relation to diagenesis
Integration of petrographic data
Integration of core data
Integration of log data
Effects of clay minerals on log responses
Effects of shale laminations on log responses
Prediction of permeability from logs
Identification of bypassed pay
Use of NMR in shaly sands
Use of Dipmeter logs

Complex Interpretation Methods

Reservoir characterisation
Introduction shaly-sand interpretation
Clay / Shale type determination
Laminated sand-clay model
Dispersed clay model
Water saturation (Sw) from Resistivity and SP logs
Pitfalls of Formation Evaluation
Permeable zones (qualitative interpretation)

Advanced interpretation methods

Archie Clean Sand Model
Simandoux Method
Waxman-Smiths Method
Juhasz Method
Dual-Water Method
Saturation determination
Movable fluids determination
Permeability estimation
Thin-bed evaluation
Porosity models

Petrophysical properties of reservoir rocks

Reservoir rocks and types
Porosity ranges
Capillary pressure (Pc)
Water saturation (Sw) Archie method
Water saturation (Sw) Dual-water method
Fundamentals of Formation Evaluation
The borehole and its environment
Open-hole and cased-hole logging methods
Electric and electromagnetic methods - Resistivity, Conductivity, Induction
Spontaneous Potential (SP logs)
Acoustic, Density, Nuclear methods
Petrophysical Imaging methods
LWD and MWD techniques
Dip Meter methods
Gamma Ray (GR methods)
Coring and core investigations
Core-to-log data integration
Review of log interpretation techniques in clean formations
Core analyses
Applications of SCAL tests
Petrographic analysis
Thin sections
X-ray diffraction
Scanning Electron Microscope (SEM)
The nature of clay minerals
Influence of shale laminations in petrophysical properties
Influence of clay minerals on petrophysical properties and shale laminations
Occurrence of clay minerals


Location Start Date End Date Cost Trainer Book
Upon request       Dimitri Massaras Make enquiry

^ Top

Website: Studio Beam Ltd