Fracturing/pressure pumping

Unconventional Proppant Combined With Channel Fracturing Increases Effectiveness

Implementation of channel fracturing enhanced by rod-shaped proppant brings substantial value for depleted Devonian formations in the Orenburg region of Russia.

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Fig. 3—Concept of channel fracturing when proppant is distributed heterogeneously inside fracture (right) as opposed to the tight proppant pack of standard-fracturing technique (left).

Implementation of channel fracturing enhanced by rod-shaped proppant brings substantial value for depleted Devonian formations in the Orenburg region of Russia. Highly conductive channels inside the proppant pack significantly minimize the influence of multiphase and non-Darcy flow on overall production. The use of rod-shaped proppant in the final stage provides the highest possible conductivity in the critical near-wellbore region and eliminates the potential problem of proppant flowback.

Introduction

Fracturing is a standard completion method for all wells producing from Devonian formations in the Orenburg region of Russia’s Volga-Urals basin. Experience has shown that these fracturing treatments usually have some specific differences from fracturing in other parts of Russia.

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