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Sand Dunes

Basic Concepts for a Good Formation and Evaluation 

This course will provide a starting point for advanced understanding of integrated formation and evaluation of a field.

The participants will learn basic formation concepts and well logging; how to interpret logs and what to extract from the evaluation; the physical principles of the tools used in logging; how to characterize formations based on interpretation of well logs; reading and interpreting well logs; interpreting logs to estimate porosity, water saturation, lithology, and hydrocarbon content.

The course will also cover important issues for doing a correct integration of all the available logs.

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Course Duration: 4 days

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Level: Foundation to Skill

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DESIGNED FOR YOU, IF YOU ARE...

  • A Geologists,

  • Reservoir engineer,

  • Geophysicists,

  • Petrophysicists,

  • Geomodellers,

  • Young subsurface professionals

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HOW WE BUILD YOUR CONFIDENCE

This course will utilise a variety of examples to ensure an in-depth learning and understanding for the petrophysical evaluation techniques. Some discussions of applications as well as exercises. The course will be delivered through a power point presentation. The participants will have access to the printed course materials and the examples they will have access to during the course.

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THE BENEFITS FROM ATTENDING

By the end of the course you will assured of understanding:

   •  Physical principles of main open hole logging tools

  • Applying basic quality control techniques to validate logging data

  • Main applications and limitations of the different tool readings

  • Performing a quick qualitative interpretation to determine possible interest zones

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TOPICS

You will be acquired:

  • Basic Logging and Petrophysical Concepts

  • Porosity and permeability concepts and classification

  • The reservoir: minimum conditions for productivity

  • Introduction to well logging

  • Log classification according to the measured properties

  • Auxiliary measurements, uses and common issues

  • Basic measurements: Gamma ray and spontaneous potential

  • Log correlations with cores

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DAILY AGENDA

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Day 1

  • Introduction to logs and different types of logs

  • Correlate and depth match logs

  • Logging environment

  • Subsurface pressure measurement

  • Temperature logging

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Day 2:

  • Log Measurement and tools

  • Interpretation charts

  • Caliper Log; SP Log; Resistivity Log

  • Gamma Ray Log

  • Sonic Log

  • Density Log

  • Neutron Logs

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Day 3:

  • Lithology and Porosity determination

  • Carbonate Effects on Porosity determination

  • Permeability definition and types of permeability

  • Neutron-Density crossplots

  • Sonic-density crossplots

  • M-N Plots

  • Possible interest zones

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Day 4:

  • Core calibration

  • Saturation Determination in clean formations

  • Crossplots: Resistivity vs Porosity

  • R0 and F

  • Exercise

  • Extra: Facies, Sequences and Depositional Environments

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INSTRUCTOR:

Ana de Sousa has 27 years of experience in oil and gas, both in clastic and carbonate reservoirs. She has a degree in Geological Engineering from the University of Coimbra, in Portugal, and a master's degree in Reservoir Assessment and Management from Heriot-Watt University, in Scotland. UK.

She joined the company Partex Oil and Gas in 1994 as an intern and until 2021 she was a senior reservoir geologist with various technical roles in reservoir characterization, modelling, and seismic interpretation in Kazakhstan, Brazil, and the Middle East (Oman).

She is a specialist in Rock Type, ANN, and SHF models and the author of several articles about Rock Types in training courses and mentoring.

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