Preparation of drag reducing agent and properties of composite osmotic acid based on volume fracturing

Zhou, Chengyu; Huang, Qiang; Xiao, Ying; Lei, Mingyao; Wan, Wei; Luo, Yufeng; Zhang, Peng

doi:10.1080/10916466.2021.1956532

Cited by 1 publication

(1 citation statement)

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“…The oil and gas seepage channels formed by natural fractures are unable to meet the development requirements. Hydraulic fracturing technology is generally regarded as an important means to achieve efficient oil and gas development. − Slickwater is the most popular fracturing fluid in shale reservoirs. , Due to the high friction coefficient of the fracturing fluid in the pipeline and wellbore, the wellhead pressure is greatly increased, which in turn increases the fracturing risk and energy consumption . , Drag reducers can significantly reduce fluid friction in the pipeline and wellbore, efficiently transferring pumping energy to the reservoir and reducing the construction stress and risk of pumping equipment .…”

Section: Introductionmentioning

confidence: 99%

Development and Drag Reduction Behaviors of a Water-in-Water Emulsion Polymer Drag Reducer

Zhao

Liu

Dai

et al. 2023

ACS Appl. Polym. Mater.

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As a key component of slickwater fracturing fluids, drag reducers play a critical role. Water-in-water (W/W) emulsion polymer drag reducers with the characteristics of rapid dissolution and the ability to increase viscosity are attracting substantial attention. In this work, a W/W emulsion polymer drag reducer P(AM-DMC) was synthesized via dispersion polymerization. The material P(AM-DMC) was characterized using Fourier transform infrared spectrometry, hydrogen nuclear magnetic resonance spectrometry, and environmental scanning electron microscopy. The results showed that the aqueous P(AM-DMC) solution was a pseudoplastic fluid with appreciable viscosity enhancement and shear resistance. The dissolution time of 0.1 wt % P(AM-DMC) was only 29 s. The drag-reduction rate of P(AM-DMC) reached 71.75%. The drag reducer also exhibited good temperature and salt resistance. Finally, a dragreduction mechanism was proposed. We hope that this study can broaden the application of W/W drag reducers in shale reservoir development.

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