Nanoparticle-induced drag reduction for polyacrylamide in turbulent flow with high Reynolds numbers

Li, Xiaoping; Pan, Jiaxin; Shi, Jinwen; Chai, Yanlin; Hu, Songwei; Han, Qiaorong; Zhang, Yanming; Li, Xianwen; Jing, Dengwei

doi:10.1016/j.cjche.2022.07.015

Cited by 8 publications

(2 citation statements)

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“…Among unconventional reservoirs, tight oil reservoirs have become crucial substitute petroleum resources for covering the resource shortage of conventional oil reservoirs. − Practically, it has been reported that volumetric fracturing technology offers advantages in reservoir reconstruction, improving the flow conductivity and enhancing the extraction efficiency of petroleum resources. − Slick water fracturing, as the main system supporting volumetric fracturing technology, − is capable of improving the pump injection volume and reducing the friction of a pipe wall . Therein, the polyacrylamide (PAMs) drag reducer is the most crucial additive in slick water fracturing for enhancing the reservoir reconstruction result. , …”

Section: Introductionmentioning

confidence: 99%

“…13 Therein, the polyacrylamide (PAMs) drag reducer is the most crucial additive in slick water fracturing for enhancing the reservoir reconstruction result. 14,15 The PAM drag reducer can be divided into powder and emulsion types; among them, PAM powders are faced with dissolution problems, resulting in a low drag reduction efficiency. 16,17 Besides, the inadequate dissolution of PAM powders results in a mass of polymer lumps, which causes pipe plugging and equipment damage and, more seriously, leads to irreversible formation damage due to the blockage of oil migration channels and reduction of fracture conductivity.…”

Section: ■ Introductionmentioning

confidence: 99%

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Insights into the Efficient Release of the Polyacrylamide Drag Reducer via a pH-Responsive Inverse Polymer Emulsion

Sun,

Qing,

et al. 2024

Langmuir

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The enormous demand for petroleum consumption has resulted in the shortage of fossil resources, prompting the need to explore unconventional reservoirs. Polyacrylamide emulsion drag reducers are capable of inhibiting the turbulence of fracturing fluids for enhancing the reservoir stimulation results, but the poor dissolution efficiency of polyacrylamide emulsion drag reducers is the primary limitation to their large-scale application. Here, a pH-responsive ionic liquid surfactant, oleic acid/ cyclohexanediamine (HOA/HMDA), is synthesized by using oleic acid (HOA) and cyclohexanediamine (HMDA). HOA/HMDA shows a remarkable pH-responsive behavior due to the pH-induced deconstruction of the HOA/HMDA structure. Interestingly, the HOA/HMDA-stabilized monomer emulsion exhibits an obvious pH-induced emulsion structure transformation behavior. In addition, the HOA/HMDA-stabilized monomer emulsion possesses excellent dynamic and storage stability, supporting the inverse emulsion polymerization of the polymer P(AM/AMPS/AA). The obtained P(AM/AMPS/AA) polymer inverse emulsions maintained stability for 30 days. Our finding proposes that the structure of the P(AM/AMPS/AA) polymer inverse emulsions changes with pH stimulation, which is capable of facilitating the release of polymers. P(AM/AMPS/AA) is released from the P(AM/ AMPS/AA) polymer inverse emulsions within 30 s at a pH value of 12.06, along with a drag reduction rate of 62.54%. Obviously, the HOA/HMDA-stabilized P(AM/AMPS/AA) polymer inverse emulsions eliminate the contradiction between the stability and release of polyacrylamide emulsion drag reducers, which is promising for meeting the demands of reservoir stimulation.

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