Difference between revisions of "TSO effect"

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==Brief==
 
==Brief==
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A fracture treatment, common where high fracture flow conductivity is needed. Very high pressures and very high proppant loadings are applied near the end of a fracture treatment where the tip of the fracture has stopped growing due to bridging of proppant at the fracture dip because of dehydration (frac fluid leakoff).
 
  
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Then dry-to-wet ratio is becoming larger then some critical value tip-screen out occurs. In this case fracture length stop to grow. And width became a function of injected proppant. If TSO design option is not chosen by the user, then we stop addition of proppant at this place. And show the warning message:” Tip screen-out occurs. Not all the proppant is placed. Try TSO design.”
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[[TSO effect]] - tip-screen-out is a situation when proppant bridges in the fracture prematurely during pumping and the trading pressure rises rapidly to the technical limit of the equipment.
  
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Also if concentration of injected slurry became larger then defined by user maximum concentration we stop addition of proppant and show the warning message:” Maximum concentration reached. Not all the proppant is placed. Try TSO design”
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[[TSO effect| TSO]] fracture designs are specifically intended to screen-out. In this case, it is often possible to continue pumping and inflate the fracture width without exceeding the pressure limits of the equipment. Very high pressures and very high proppant loadings are applied near the end of a fracture treatment where the tip of the fracture has stopped growing due to bridging of proppant at the fracture dip because frac fluid leakoff.
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[[TSO effect| TSO]] fracture designs are mainly done in high permeable and soft formations where high fracture flow conductivity (width) is needed.  
  
 
[[Category:FracDesign]]
 
[[Category:FracDesign]]
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{{#seo:
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|title=TSO effect
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|titlemode= replace
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|keywords=hydraulic fracturing, hydraulic fracturing formulas, TSO effect
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|description=Tip-screen out effect in hydraulic fracturing
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}}

Latest revision as of 06:34, 9 June 2020

Brief

TSO effect - tip-screen-out is a situation when proppant bridges in the fracture prematurely during pumping and the trading pressure rises rapidly to the technical limit of the equipment.

TSO fracture designs are specifically intended to screen-out. In this case, it is often possible to continue pumping and inflate the fracture width without exceeding the pressure limits of the equipment. Very high pressures and very high proppant loadings are applied near the end of a fracture treatment where the tip of the fracture has stopped growing due to bridging of proppant at the fracture dip because frac fluid leakoff.

TSO fracture designs are mainly done in high permeable and soft formations where high fracture flow conductivity (width) is needed.

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