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Minifrac Analysis: A Comprehensive Overview

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Course Credit: 0.15 CEU, 1.5 PDH

Minifrac Tests are also known as: Fracture Diagnostic Tests (FDT), Fracture Calibration Tests (FCT), or Diagnostic Fracture Injection Tests (DFIT).

The objectives of Minifrac Tests differ depending on the permeability of the formation, which dictates the type of test that is appropriate for the analogue treatments: Frac-Pack, Conventional Prop Frac, Acid Frac or Unconventional Frac. The design of the appropriate Minifrac Test also depends on the permeability of the formation; while the aim is to obtain the most information at the least cost, least time, and least formation damage. The test procedures also differ, that is, we can have a Pump-in Shut-in Test, a Pump-in Flow-back Test, etc.

Basic analysis techniques include: Linear Plots, Square Root Plots, Log-Log Plots, and G-Function Plots. A major parameter determined is the Closure Pressure, which is used to determine almost all other parameters: Efficiency, Pad size, Net-Pressure, etc. The Rate Step-Down Test analysis determines the three friction components: Pipe, Perforation, and Near-wellbore advanced analysis techniques include Before Closure Analysis, and After Closure Analysis. Besides the Flow regime (Bilinear, Linear, or Radial), other parameters can be determined: Permeability, Fracture Length, Reservoir Pressure, etc. Step-Up Rate Test, useful for Acid Fracturing, includes the determination of The Fracture Extension Pressure, and the Minimum Horizontal Stress.

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Course Chapters

  • 1Minifrac Analysis: A Comprehensive Overview - Chapter 1
    Media Type: Video

Credits

Earn credits by completing this course0.15 CEU credit1.5 PDH credits

Speakers

Leon Massaras