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E-352 - Core Analysis for Reservoir Characterization

E-352 - Core Analysis for Reservoir Characterization

5 days
REE/CONSCAL
Sessions
This course is not scheduled.
Who should attend?

Audience

    • Reservoir engineers, petrophysicists, geologists, geophysicists, petroleum engineers and other E&P professionals.

Level

  • Proficiency
  • This course provides a comprehensive and practical understanding of method, procedures and issues related to evaluation of conventional and special core analysis which describe the rock properties such as relative permeability and capillary pressure at laboratory and all considerations that should be taken into account for reservoir characterization.
Learning Objectives
  • Upon completion of the course, participants will be able to:
  • know and understand rock properties used in reservoir modeling and reservoir simulation models,
  • know how to interpret and validate a CCAL and a SCAL report and review a quality control process,
  • know how to design a SCAL program with regard to given objectives.
Course Content

CORING & CORE ANALYSIS

1 day

  • Introduction.
  • Business value of core analysis demonstrated on real life examples.
  • Necessary quality procedures at the start of a measurement program.
  • Coring methods (conventional vs. pressure coring, decompression during tripping).
  • Core preservation.
  • Core cleaning.
  • Representative wettability (fresh vs. restored state).
  • Conventional and Special Core Analysis (SCAL).

GENERALITIES ON TWO-PHASE FLOW PROPERTIES


  • Darcy’s law for two phases, relative permeability.
  • Capillary pressure.
  • Wettability (Amott and USBM methods).
  • Impact of wettability on relative permeability and capillary pressure.
  • Basics of JBN analysis for the UnSteady-State experiment.
  • Effect of capillary pressure demonstrated by hands-on simulation, using the SCORES SCAL simulator.

CONVENTIONAL CORE ANALYSIS

1 day

  • Porosity definition and measurement.
  • Permeability (absolute) definition and measurements.
  • Formation factor and Resistivity Index definition and measurement.
  • Mercury injection (MICP) for reservoir saturation height function and pore size distribution.
  • Recent developments in MICP showing important problems in MICP for low permeability rock when assessing transition zones.

SPECIAL CORE ANALYSIS (SCAL), MEASUREMENTS OF SCAL PROPERTIES

1 day

  • Overview of measurement methods and data interpretation for relative permeability and capillary pressure.
  • Steady-State Technique, in-situ saturation monitoring.
  • UnSteady-State Technique, in-situ saturation monitoring.
  • Multi-Speed Centrifuge Technique.
  • Single-Speed Centrifuge Technique.
  • Porous Plate Technique.
  • Analysis of centrifuge data using Hassler-Brunner, Forbes methods.
  • Analysis of centrifuge data using Hagoort method.
  • Effect of relative permeability on capillary pressure measurement demonstrated by hands-on simulations using the SCORES SCAL simulator.

QUALITY CONTROL OF AVAILABLE DATA

1 day

  • Sample selection using X-ray CT for homogeneity assessment.
  • Representative wettability, special considerations for transition zones.
  • Recognizing unusual features.

AVERAGING PETROPHYSICAL PROPERTIES

1 day

  • Saturation height function assessment.
  • Leverett-J function.
  • Initial water saturation.
  • Rock typing.
  • Gridding for reservoir simulation.

DESIGN OF SCAL PROGRAM


  • Demonstration step-by-step approach.
  • Establish SCAL program objective.
  • Understanding of strength and weaknesses of each SCAL method.
  • Need for imbibition capillary pressure to interpret relative permeability data.
Ways & Means
  • Highly interactive course alternating theory, exercises and field cases using dedicated Excel spread sheets and the Maas SCAL (Special Core Analysis) license free simulator SCORES.