Drag reduction behavior of hydrolyzed polyacrylamide/xanthan gum mixed polymer solutions

Habibpour, Mehdi; Clark, Peter E.

doi:10.1007/s12182-017-0152-7

Cited by 47 publications

(50 citation statements)

References 32 publications

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“…Following e.g. Huang & Desroches (2004); Wang et al 2018 Truncated power-law Habibpour & Clark (2017)). The limiting viscosities are the same for both models.…”

Section: The Numerical Resultsmentioning

confidence: 99%

On the application of simplified rheological models of fluid in the hydraulic fracture problems

Wróbel

2020

International Journal of Engineering Science

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In this paper we analyse a problem of a hydraulic fracture driven by a non-Newtonian shearthinning fluid. For the PKN fracture geometry we consider three different rheological models of fluid: i) the Carreau fluid, ii) the truncated power-law fluid, iii) the power-law fluid. For each of these models a number of simulations are performed. The results are post-processed and compared with each other in order to find decisive factors for similarities/dissimilarities. It is shown that under certain conditions even the basic power-law rheology can be a good substitute for the Carreau characteristics. Although for a particular fluid such a conclusion cannot be made a priori, postprocessing based on average values of the fluid shear rates is a very good tool to verify credibility of the results obtained for simplified rheological models. The truncated power-law rheology is a good alternative for the Carreau model. It always produces results that are very similar to those obtained with the equivalent Carreau fluid and simultaneously provides a relative ease of numerical implementation.

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“…Following e.g. Huang & Desroches (2004); Wang et al 2018 Truncated power-law Habibpour & Clark (2017)). The limiting viscosities are the same for both models.…”

Section: The Numerical Resultsmentioning

confidence: 99%

On the application of simplified rheological models of fluid in the hydraulic fracture problems

Wróbel

2020

International Journal of Engineering Science

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“…Moreover, one must bare in mind that the addition of heavy molecular weight polymer also increases the viscosity of the fracturing fluid. The resulting fluid exhibits a degree of shear thinning (Habibpour & Clark 2017) and visco-elasticity (White & Mungal 2008; Larson & Desai 2015). The increase of the (low shear rate) viscosity with polymer concentration can be estimated via the Mark–Houwing–Sakurada relation between intrinsic viscosity (where is the viscosity of the solvent, and the concentration) and molecular weight: (typically expressed in ) (Brandrup et al.…”

Section: Discussionmentioning

confidence: 99%

Slickwater hydraulic fracture propagation: near-tip and radial geometry solutions

Lecampion

Zia

2019

J. Fluid Mech.

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We quantify the importance of turbulent flow on the propagation of hydraulic fractures (HF) accounting for the addition of friction reducing agents to the fracturing fluid (slickwater fluid). The addition in small quantities of a high molecular weight polymer to water is sufficient to drastically reduce friction of turbulent flow. The maximum drag reduction (MDR) asymptote is always reached during industrial-like injections. The energy required for pumping is thus drastically reduced, allowing for high volume high rate hydraulic fracturing operations at a reasonable cost. We investigate the propagation of a hydraulic fracture propagating in an elastic impermeable homogeneous solid under a constant (and possibly very high) injection rate accounting for laminar and turbulent flow conditions with or without the addition of friction reducers. We solve the near-tip HF problem and estimate the extent of the laminar boundary layer near the fracture tip as a function of a tip Reynolds number for slickwater. We obtain different propagation scalings and transition time scales. This allows us to easily quantify the growth of a radial HF from the early-time turbulent regime(s) to the late-time laminar regimes. Depending on the material and injection parameters, some propagation regimes may actually be bypassed. We derive both accurate and approximate solutions for the growth of radial HF in the different limiting flow regimes (turbulent smooth, rough, MDR) for the zero fracture toughness limit (corresponding to the early stage of propagation of a radial HF). We also investigate numerically the transition(s) between the early-time MDR regime to the late-time laminar regimes (viscosity and toughness) for slickwater fluid. Our results indicate that the effect of turbulent flow on high rate slickwater HF propagation is limited and matters only at early times (at most during the first minutes for industrial hydraulic fracturing operations).

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“…It is proved that the degradation rate of the polymer synthesized at high temperature is faster. Habibpour and Clark [35] studied hydrolyzed polyacrylamide solutions of different concentrations. It was found Zhang et al [30] also verified Brostow's hypothesis through experiments.…”

Section: Factors Affecting the Mechanical Degradation Of Polymer Dragmentioning

confidence: 99%

“…It is proved that the degradation rate of the polymer synthesized at high temperature is faster. Habibpour and Clark [35] studied hydrolyzed polyacrylamide solutions of different concentrations. It was found that with the increase in hydrolyzed polyacrylamide concentration, the shear degradation resistance of the solution increased.…”

Section: Factors Affecting the Mechanical Degradation Of Polymer Dragmentioning

confidence: 99%

Research Progress on the Collaborative Drag Reduction Effect of Polymers and Surfactants

Mou

et al. 2020

Materials

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Polymer additives and surfactants as drag reduction agents have been widely used in the field of fluid drag reduction. Polymer additives can reduce drag effectively with only a small amount, but they degrade easily. Surfactants have an anti-degradation ability. This paper categorizes the mechanism of drag reducing agents and the influencing factors of drag reduction characteristics. The factors affecting the degradation of polymer additives and the anti-degradation properties of surfactants are discussed. A mixture of polymer additive and surfactant has the characteristics of high shear resistance, a lower critical micelle concentration (CMC), and a good drag reduction effect at higher Reynolds numbers. Therefore, this paper focuses more on a drag reducing agent mixed with a polymer and a surfactant, including the mechanism model, drag reduction characteristics, and anti-degradation ability.

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Drag reduction behavior of hydrolyzed polyacrylamide/xanthan gum mixed polymer solutions

Cited by 47 publications

References 32 publications

On the application of simplified rheological models of fluid in the hydraulic fracture problems

On the application of simplified rheological models of fluid in the hydraulic fracture problems

Slickwater hydraulic fracture propagation: near-tip and radial geometry solutions

Research Progress on the Collaborative Drag Reduction Effect of Polymers and Surfactants

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