Category: OptiFrac
From wiki.pengtools.com
Contents
Brief
optiFrac is a single well fracture design optimization tool.
For the given set of reservoir and proppant properties optiFrac calculates maximum achievable well productivity index (JD) and required fracture geometry.
In production optimization of hydraulic fracturing, it is important to recognize that for a fixed proppant volume, fracture length and fracture width compete to each other. Consequently, there is an optimum fracture length and width that would maximize the dimensionless productivity index of the fractured well [1].
optiFrac is available online at www.pengtools.com and in AppStore for iPad.
Typical applications
- Optimization of hydraulic fracturing
- Understanding post-fracturing production performance
- Design Sensitivity Studies and Benchmarking
- Optimum fracture design parameters determination:
- Dimensionless productivity index, JD .
- Dimensionless Fracture conductivity, CfD .
- Fracture half length, Xf .
- Fracture width, w .
- Fracture penetration, Ix .
Main features
- Unified fracture design workflow
- Plot of JD as a function of CfD and Ix as parameter.
- Plot of JD as a function of CfD and Np as parameter.
- Design optimization curve which corresponds to the maximum JD values for different Np.
- Design Optimum Point at which the dimensionless productivity index, JD, is maximized for the given proppant, fracture and reservoir parameters.
- Physical constraints envelope.
- Proppant library with predefined proppant properties.
- Users Data Worksheet for benchmarking vs actual.
Interface features
- Save and share models with colleagues
- Last saved model on current computer and browser is automatically opened
- Metric and US oilfield units
- Save as image and print plots by means of chart context menu (button at the upper-right corner of chart)
- Download pdf report with input parameters, calculated values and plots
- Select and copy results to Excel or other applications
Math & Physics
Unified fracture design[2] defenitions:
- penetration ratio
- dimensionless fracture conductivity
- proppant numer
Workflow
Discussion
References
- ↑ Rueda, J.I.; Mach, J.; Wolcott, D. (2004). "Pushing Fracturing Limits to Maximize Producibility in Turbidite Formations in Russia"
(SPE-91760-MS). Society of Petroleum Engineers.
- ↑ Economides, Michael J.; Oligney, Ronald; Valko, Peter (2002). Unified Fracture Design: Bridging the Gap Between Theory and Practice. Alvin, Texas: Orsa Press.
Pages in category "OptiFrac"
The following 6 pages are in this category, out of 6 total.
