Discipline Petrophysics ,
Unconventional Resources
LevelSkill
Duration5 Days
Delivery Mechanism Classroom
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Petrophysics Aspects of Shale Gas

This course provides a general introduction to the use of well logs to evaluate organic shale reservoirs. Primary focus will be on estimating basic components of reservoir quality—TOC, primary mineralogy, porosity, saturation, permeability, hydrocarbon in place. Additional focus will be on estimating basic components of completion quality—minimum horizontal stress for isotropic and anisotropic systems. The combination of the two criteria will be use to identify, qualify and pick a lateral landing point for an organic shale.

The curriculum is designed for petroleum engineers and geologists with limited expertise in petrophysics. Most of the relevant algorithms can be estimated either with a calculator or instructor-provided spreadsheets. Organic shale logs will be evaluated using these tools throughout the week.

Goal will be for the students to determine viability of an organic shale as a reservoir with a basic well logging suite. With the inclusion of a sonic log, the students will be able to determine stress and the optimum lateral landing point for horizontal wellbores. The use of basic spreadsheets will be employed to quantify reservoir and completion quality of a shale reservoir.

  • Agenda
  • Audience
  • Agenda

    Day 1

    • Definition of productive organic shale reservoir
    • TOC/Kerogen identification and quantification

    Day 2

    • Adsorbed gas quantification using Langmuir isotherm
    • Quantification of mineralogy through log evaluation and relationship to producibility

    Day 3

    • Porosity—effective vs. total and their estimation
    • Hydrocarbon saturation calculation and accounting for clay water

    Day 4

    • Estimation of pore gas hydrocarbon with adsorption correction
    • Delineation of shale gas beds and identification of potential pay

    Day 5

    • Determination of stress for completion design
    • Estimation of producibility based on porosity, permeability, fractures, pressure etc.
    • Determination of lateral landing points using stress profiles and rock quality
  • Audience

    Engineers and Geoscientists 

  • Prerequisites

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