Refracturing

Div+ refracturing products are temporary diverting materials used  to temporarily obstruct pre-existing perforations and encourage propagation away from existing fractures. During placement, DiverterPlus is a solid degradable polymer material capable of re-routing treatment fluid. After successfully performing the intended function for the desired timeframe, the diverter is designed to hydrolyze to a clear, non-hazardous liquid. This process is driven simply by time, temperature, and pressure in the presence of water meaning that no additional remedial work is necessary. DiverterPlus blends are unique bimodal blends of particles for better plugging performance while far field products are precision powders designed for proper interaction with common proppant sizes.

Lateral Isolation Application

  • Achieve mechanical isolation without expense and risk of liner systems.
  • Minimal equipment requirements allow flexibility for squeeze operations
  • No post-job remediation required, and pre-existing clusters continue producing
  • Diversion sustainable for multiple weeks via polymer selection
  • No decrease in lateral internal diameter

Fracture Reorientation Application

  • Re-orient fracture along different azimuth than original treatment
  • Re-route fluid away from former fractures
  • Expand propped fracture network
  • Most effective way to re-stimulate pre-existing clusters
  • Increase SRV in under-stimulated intervals
  • Induces fracture growth towards non-depleted reservoir
  • No additional fracturing equipment requirement

 

In wells that were originally completed with excessive stage spacing, Div+ products offer an economical alternative for wellbore isolation without the cost or compromise typically associated with mechanical methods. Through a versatile portfolio of varied-lifespan polymers, the existing perforations can be obstructed for the time required to perforate and stimulate new intervals along the wellbore.

The most effective refracture treatments are those which stimulate previously untreated portion of the reservoir. Although pumping larger volumes of fluid and/or proppant can result in an incremental increase in stimulated reservoir volume, the most productive approach is to propagate a new fracture along a different azimuth than the original treatment. In order to do this, either new clusters must be perforated or the original fracture must be obstructed such that continued propagation becomes more difficult than initiating a new fracture. A combination of proppant and Div+ can be utilized to form a fluid-impermeable barrier that temporarily blocks the original fracture while minimizing leakoff, thereby ensuring viability of a new fracture.