MinFrac

MinFrac is a special-purpose application for designing and analyzing minifrac treatments. The program provides a means of examining rate and pressure data during and after a period of injection. This includes pump-in/shut-in tests for the determination of stress, step rate interpretation and conventional or “unconventional” pressure decline analysis. MinFrac, like MFrac, can also communicate dynamically in real-time with MView to share data. This allows data interpretation during real-time and eliminates the requirement of suspending data acquisition during analysis.

The primary purpose of MinFrac is to calculate closure pressure, fracture efficiency, individual fracture geometry, leakoff coefficients and near wellbore effects.

Capabilities

Tool to help optimize the main fracture treatment
Determine fracture fluid loss behavior
Methodology to analyze near wellbore effects
Analyze fracture pressure fall off data
Ability to determine fracture and reservoir characteristics
Solves governing mass, energy and constitutive relationships
Intuitive graphical interface (wizard)
Geometry comparison of 2D fracture models

Features

Process and analyze real-time or replay data
Horner analysis - estimate minimum extension pressure
Step Rate analysis - estimate maximum extension pressure
Step Down analysis - estimate near wellbore friction
Non-linear regression analysis
Numerous time functions (including G-function, Nolte time, root time, etc.)
Automatic option to find closure and ISIP
Log-Log and linear analysis plots
PKN, GDK and ellipsoidal model geometry calculations
History matching of geomechanical properties
Permeability estimation
Analysis wizard

Integration

During real-time or replay analyses, MinFrac receives the simulation input data from MView. The data sent to MinFrac include the pump rate and bottomhole and/or surface pressures versus time. This real-time data is then used to determine the ISIP, closure pressure, fracture efficiency, leakoff coefficients, near wellbore pressure loss, etc.

The minifrac results from MinFrac can then be used in MFrac to calibrate the stresses, fracture model, fracture efficiency, pad volume etc. prior to the actual pumping of the main treatment.

MinFrac Mini-Tutorials

Next: Minifrac Analysis >>

Click here to download the Meyer 2009 User’s Guide, including the chapter on MinFrac