New High Viscosity Friction Reducers for Proppant Transport in Hydraulic Fracturing
- Jingshe Song (Fritz Industries, Inc.) | Reinaldo Navarrete (Fritz Industries, Inc.) | Mahmoud Asadi (Fritz Industries, Inc.) | Bryan Jin (Fritz Industries, Inc.)
- Document ID
- Society of Petroleum Engineers
- SPE International Conference and Exhibition on Formation Damage Control, 19-21 February, Lafayette, Louisiana, USA
- Publication Date
- Document Type
- Conference Paper
- 2020. Society of Petroleum Engineers
- Proppant transport, high viscosity friction reducers, stimulation fluid, formation damage, friction reduction
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- 53 since 2007
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The use of high viscosity friction reducers (HVFRs) has increased rapidly as replacements for linear and even crosslinked guar-based fluids for proppant transport in hydraulic fracturing. HVFRs at high loadings have significantly higher fluid viscosities than conventional friction reducers (FRs). However, the efficiency of current HVFRs is still limited. The primary objective of this study is to compare proppant transport performance of newly developed HVFRs with commercial HVFRs and guar-based systems.
Several test protocols were performed for investigating the proppant transport efficiency of HVFR systems. Five HVFRs with different structures were prepared using the inverse emulsion polymerization technique. The viscosity of these five HVFRs and a commercial HVFR were measured and compared across a wide range of concentrations under various shear rates using a rheometer with a concentric cylinder geometry. Proppant transport performance was assessed using static proppant settling tests. A conventional linear guar-based gel was also tested and compared as a reference.
Several HVFRs were tested in the laboratory. The results show that using only high shear viscosity as an indicator of proppant transport performance is not appropriate. Low shear rate viscosity is a better indicator of proppant transport. Static settling tests are a good testing method to compare the proppant transport performance of different HVFRs. The structure of HVFRs was found to be critical to the viscosity and proppant transport performance. The chemical structures of HVFRs were optimized in the laboratory. The testing results show that the newly developed HVFRs have higher viscosity and better proppant transport performance than the commercial HVFR and linear guar-based gel systems tested.
This paper provides a comprehensive study of HVFRs as replacements for linear and crosslinked guar-based systems. This study shows the effects of polymer structural features, such as charge, size and water salinity on proppant transport performance.
|File Size||699 KB||Number of Pages||8|
Sun H., DeBenedictis F., Zhou J., . 2013. Field Case Histories of a Non-Damaging Guar Alternative for Linear Gel Application in Slickwater Fracturing. SPE European Formation Damage Conference & Exhibition. Noordwijk, The Netherlands, 5-7 June. SPE-165130-MS. https://doi.org/10.2118/165130-MS
Ba Geri, M., Imqam A., and Flori R. 2019. A Critical Review of Using High Viscosity Friction Reducers as Fracturing Fluids for Hydraulic Fracturing Applications. SPE Oklahoma City Oil and Gas Symposium, Oklahoma City, Oklahoma, 9-10 April. https://doi.org/10.2118/195191-MS