Formation damage

Damage Potential, Proppant-Transport Traits of High-Viscosity Friction Reducers

The paper provides information to engineers for selecting high-viscosity friction reducers and describes a methodology for evaluating damage potential and proppant transport.

30/50 sand post cleanup.
30/50 sand post cleanup.

High-viscosity friction reducer (HVFR) fracturing fluids are used widely for unconventional reservoir development. HVFRs are easy to apply and can reduce chemical costs. The objective of the study described in the complete paper is to measure polymer cleanup in both propped and unpropped fractures using multiple methods. Additionally, the study compares rheological measurements in proppant-transport observations in brines using a large-scale slot-flow device.

Potential for Formation Damage

High-polymer-concentration crosslinked fracturing-fluid systems often have been supplanted by linear (i.e., noncrosslinked) guar systems of lower-polymer loading (e.g.

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