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1. InfuSeal™ for Zonal Isolation & Diversion

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Why Refrac? Refracturing or restimulation is to use existing wellbores for additional hydrocarbon recovery without having to drill a new well. Within a given field, the completion techniques typically evolve leaving many wells with stranded volumes of commercial hydrocarbons. Refracturing is an approach that has been successful for many operators. However, the main challenge of Refrac is to create new fractures, instead of pumping the proppant and fluid into the old fractures.

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NewWell Tech has successfully developed chemical sealing material, InfuSeal™ to fix a wellbore. The sealing materials are based on crosslinking reaction. The sealing materials are liquid on surface, then crosslinks to rubbery solids at downhole temperature, thus fixing the wellbore.

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After turning to solid, it can withstand multiple high-pressure cycles at downhole conditions during production or hydraulic fracturing operations. Laboratory tests demonstrate the product can withstand more than 5000 psi differential pressure with 1 ft of penetration depth into the leakage point.

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The reaction rate of InfuSeal™ can be controlled to match pumping time.

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InfuSeal™ is applied to candidate wells via bullheading or well intervention methods to isolate previously fractured networks allowing the refracturing operation to contact and stimulate untouched sections of reservoir. The residue left in wellbore can be easily drilled out. 

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InfuSeal™ is applied to candidate wells via bullheading or well intervention methods to isolate previously fractured networks allowing the refracturing operation to contact and stimulate untouched sections of reservoir. The residue left in wellbore can be easily drilled out. 

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InfuSeal™ has these advantages:

  • Water based system, easy to clean from surface equipment and wellbore.

  • Reliable and controllable reaction rate, avoiding premature setting.

  • Applicable to wide temperature range, from 85 °F to 350 °F.

  • Leaves full open wellbore ID & access.

  • Drills out easily.

  • Non-brittle to withstand multiple pressure events.

 

Except to the refracturing wellbore preparation, InfuSeal™ applications include:​

  • Water shut-off

  • Water and gas coning

  • Fix casing leaks

  • Block old or unwanted perfs

  • Loss circulation control

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