Difference between revisions of "OptiFrac"

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== Brief ==
 
== Brief ==
  
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[[optiFrac]] is a fracture design optimization tool.  
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[[optiFrac]] is a hydraulic fracture design optimization tool.  
  
 
For the given set of reservoir and propane properties it calculates maximum achievable well productivity index and required fracture geometry.
 
For the given set of reservoir and propane properties it calculates maximum achievable well productivity index and required fracture geometry.
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[[File:OptiFrac_i.png|thumb|right|200px|link=https://www.pengtools.com/optiFrac|pengtools optiFrac]]
  
 
== Typical applications ==
 
== Typical applications ==
  
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* Single Well Fracture Design and Sensitivity Studies
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* Single Well Fracture Design
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* Design Sensitivity Studies and Benchmarking
 
* Optimum fracture design parameters determination:
 
* Optimum fracture design parameters determination:
 
** Dimensionless productivity index, '''J<sub>D</sub>''' .
 
** Dimensionless productivity index, '''J<sub>D</sub>''' .
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== Interface features ==  
 
== Interface features ==  
  
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[[File:PQPLOT_i.png|thumb|left|200px|link=http://www.pengtools.com/pqPlot|PEngTools pqPlot]]
 
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<div style="margin-left:220px">
 
 
* Save and share models with colleagues
 
* Save and share models with colleagues
 
* Last saved model on current computer and browser is automatically opened
 
* Last saved model on current computer and browser is automatically opened
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* Download '''pdf''' report with input parameters, calculated values and plots
 
* Download '''pdf''' report with input parameters, calculated values and plots
 
* Select and copy results to Excel or other applications
 
* Select and copy results to Excel or other applications
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</div>
 
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<div style="clear:both"></div>
 
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== Used correlations ==
 
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<table width="100%" border="1" cellpadding="3" cellspacing="1">
 
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<tr>
 
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<th>Type of problem</th>
 
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<th>Correlation</th>
 
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<th>Reference</th>
 
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</tr>
 
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<tr><td>
 
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Oil well [[VLP]]
 
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</td><td>
 
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[[Hagedorn and Brown correlation|Hagedorn and Brown]] + [[Griffith correlation| Griffith]]
 
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</td><td>
 
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Hagedorn, A. R., & Brown, K. E. (1965). Experimental study of pressure gradients occurring during continuous two-phase flow in small-diameter vertical conduits. Journal of Petroleum Technology, 17(04), 475-484.
 
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</td></tr>
 
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<tr><td>
 
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Gas well [[VLP]]
 
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</td><td>
 
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[[Gray correlation|Gray]]
 
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</td><td>
 
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Gray, H. E. (1974). Vertical flow correlation in gas wells. User manual for API14B, subsurface controlled safety valve sizing computer program.
 
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</td></tr>
 
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<tr><td>
 
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Dry gas [[VLP]]
 
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</td><td>
 
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[[Fanning correlation|Fanning]]
 
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</td><td>
 
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Cullender, M.H. and Smith, R.V. 1956. Practical Solution of Gas-Flow Equations for Wells and Pipelines with Large Temperature Gradients. Trans., AIME 207: 281.
 
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</td></tr>
 
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<tr><td>
 
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Oil well inflow
 
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</td><td>
 
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Composite IPR based – Vogel equations taking into account water
 
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</td><td>
 
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Kermit E. Brown "The Technology of Artificial Lift
 
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Methods" Vol. 4 Production Optimization of Oil and Gas
 
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Wells by Nodal System Analysis, p. 30, section 2.227.1
 
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</td></tr>
 
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<tr><td>
 
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Gas well inflow – backpressure equation
 
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</td><td>
 
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Rawlins and Schellhardt
 
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</td><td>
 
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Rawlins, E.L. and Schellhardt, M.A. 1935. Backpressure Data on Natural Gas Wells and Their Application to Production Practices, Vol. 7. Monograph Series, USBM.
 
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</td></tr>
 
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<tr><td>
 
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Gas well inflow – pseudo-pressure equation using Jd and kh values
 
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</td><td>
 
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Real-gas pseudopressure equation
 
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</td><td>
 
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See for example: Ahmed, T., & McKinney, P. (2011). Advanced reservoir engineering. Gulf Professional Publishing.
 
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</td></tr>
 
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<tr><td>
 
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[[Liquid loading]]
 
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</td><td>
 
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Turner
 
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</td><td>
 
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Turner, R. G., Hubbard, M. G., and Dukler, A. E. (1969) “Analysis and Prediction of Minimum Flow Rate for the Continuous Removal of Liquids from Gas Wells,” Journal of Petroleum Technology, Nov. 1969. pp. 1475–1482.
 
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</td></tr>
 
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<tr><td>
 
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[[Erosional velocity]]
 
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</td><td>
 
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Guidelines from API RP14E
 
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</td><td>
 
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Mokhatab S, Poe WA, Speight JG (2006) "Handbook of Natural Gas Transmission and Processing", Section 11.6 - Design Considerations on sales gas pipelines, subsection 11.6.1 - Line Sizing Criteria, Elsevier, 2006.
 
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</td></tr>
 
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</table>
 
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PVT correlations are the same as in [[PVT tool|PVT tool]].
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== References ==
 +
Rueda JI, Mach J, Wolcott D (2004) Pushing fracturing limits to maximize producibility in turbidite formations in Russia. Paper SPE 91760.
  
 
[[Category:optiFrac]]
 
[[Category:optiFrac]]
 
[[Category:pengtools]]
 
[[Category:pengtools]]
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{{#seo:
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|title=optiFrac - Hydraulic Fracture Design Optimization Software
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|titlemode= replace
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|keywords=hydraulic fracturing, hydraulic fracturing formulas, hydraulic fracturing proppant, optimization, petroleum engineering
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|description=optiFrac - Hydraulic Fracture Design Optimization Software
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}}

Latest revision as of 07:55, 7 December 2018

Brief

optiFrac is a hydraulic fracture design optimization tool.

For the given set of reservoir and propane properties it calculates maximum achievable well productivity index and required fracture geometry.

pengtools optiFrac

Typical applications

  • Single Well Fracture Design
  • 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

  • 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

References

Rueda JI, Mach J, Wolcott D (2004) Pushing fracturing limits to maximize producibility in turbidite formations in Russia. Paper SPE 91760.

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