Experimental investigation on rheological properties and friction performance of thickened CO2 fracturing fluid

Luo, Xiangrong; Wang, Shuzhong; Wang, Zhiguo; Jing, Zhou; Lv, Mingming; Zhai, Zhende; Han, Tao

doi:10.1016/j.petrol.2015.06.033

Cited by 52 publications

(39 citation statements)

References 27 publications

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“…[6][7][8]41 By contrast, the thickening mechanism of siloxane in CO 2 has not been proposed before. The thickening mechanism of silicone is similar to that of a surfactant, 29 but the addition of a solvent is the biggest difference between two thickeners. 29,42 As an electron-donating group, the phenyl group in toluene could interact with CO 2 (ref.…”

Section: Thickening Mechanism Of Prepared Silicone In Comentioning

confidence: 94%

“…The thickening mechanism of silicone is similar to that of a surfactant, 29 but the addition of a solvent is the biggest difference between two thickeners. 29,42 As an electron-donating group, the phenyl group in toluene could interact with CO 2 (ref. 43) to generate an induction force.…”

Section: Thickening Mechanism Of Prepared Silicone In Comentioning

confidence: 94%

“…Silicone cannot be dissolved separately at high-pressure CO 2 , which has been shown by a high-pressure dissolution experiment. 11,[29][30][31] According to the literature 10,31 and a high boiling point (110.6 C), toluene is an excellent organic liquid to thicken CO 2 . Compared with hexane, a smaller amount is another important reason to choose toluene.…”

Section: Phase Behavior Of Siloxane In Organic Liquids and Phase Behamentioning

confidence: 99%

“…More specically, the activation energy of molecules decreased from 295 K to 335 K, which resulted in reduced viscosity. 29 A rising trend on viscosity was shown from 8 MPa to 14 MPa because the increased pressure could signicantly reduce cracking of the mesh structure and molecular spacing. 30 To compare the thickening performance of epoxy-terminated polydimethylsiloxane in CO 2 , a commercial polydimethylsiloxane with the same M n (21 000) was used to evaluate CO 2 viscosity.…”

Section: Thickening Property Of Siloxane In Comentioning

confidence: 99%

“…1 Numerous mesh structures showed an increase in liquid viscosity macroscopically. 29 The epoxy group and carbonyl group within the ester group could assist this prepared polymer to enhance the interaction between the polymer and CO 2 , and solubility and miscibility could be improved. 6,50,51…”

Section: Thickening Mechanism Of Prepared Silicone In Comentioning

confidence: 99%

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Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Wang

Dong

et al. 2018

RSC Adv.

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Section: Thickening Mechanism Of Prepared Silicone In Comentioning

confidence: 94%

Section: Thickening Mechanism Of Prepared Silicone In Comentioning

confidence: 94%

Section: Phase Behavior Of Siloxane In Organic Liquids and Phase Behamentioning

confidence: 99%

Section: Thickening Property Of Siloxane In Comentioning

confidence: 99%

Section: Thickening Mechanism Of Prepared Silicone In Comentioning

confidence: 99%

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Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Wang

Dong

et al. 2018

RSC Adv.

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Variations and model of the rheological parameters of low damage BCG − CO₂ fracturing fluid

Luo

Pan

et al. 2020

Can J Chem Eng

Self Cite

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A BCG − CO 2 fracturing fluid composed of a new thickener and CO 2 causes low amounts of formation damage, and it can be used to stimulate low-permeability gas reservoirs with water sensitivity. However, at present the rheological properties of this foam fracturing fluid are unclear, which has limited its field application to some degree. The main purpose of this study was to ascertain the rheological parameters and a model of the BCG − CO 2 fracturing fluid. The rheological properties of the BCG − CO 2 fracturing fluid were evaluated by using a foam rheological test system. The unfoamed condition test results showed that when the shear rate was lower than 1000 s −1 , the effective viscosity exhibited a rapid decreasing trend. The effective viscosity of the BCG − CO 2 fracturing fluid was 4 to 26 mPa Á s under foamed conditions. The comparison results showed that the viscosity of the BCG − CO 2 foam was suitable as a low damage fracturing fluid. The measured data were fitted using the H-B and power law models in this study. The power law model, by contrast, was fit for describing the relationship between shear rate and shear stress. The foamed condition rheological index n 0 first decreased and then increased with increasing foam quality, and the rheological coefficient k 0 first increased and then decreased with increasing foam quality. For the different foam qualities, the rheological index n 0 first increased and then decreased with increasing temperature. The rheological coefficient k 0 showed a decreasing trend with increasing temperature. When an exponential function, in which the foam quality and temperature were independent, was used for fitting, it was not accurate in predicting the rheological properties. The fitting results based on a quadratic polynomial surface model were better. The average calculation errors of the rheological parameters were all less than 3.32%. The findings of this study can help develop a better understanding of the heat transfer and flow coupling process in wellbore and fracture in fracturing treatment.

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A modified Ester-branched thickener for rheology and wettability during CO2 fracturing for improved fracturing property

Wang

Owusu

2019

Environ Sci Pollut Res

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Experimental investigation on rheological properties and friction performance of thickened CO2 fracturing fluid

Cited by 52 publications

References 27 publications

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Variations and model of the rheological parameters of low damage BCG − CO₂ fracturing fluid

A modified Ester-branched thickener for rheology and wettability during CO2 fracturing for improved fracturing property

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Experimental investigation on rheological properties and friction performance of thickened CO2 fracturing fluid

Cited by 52 publications

References 27 publications

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO2 thickening

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO2 thickening

Variations and model of the rheological parameters of low damage BCG − CO2 fracturing fluid

A modified Ester-branched thickener for rheology and wettability during CO2 fracturing for improved fracturing property

Contact Info

Product

Resources

About

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Effect of different factors on the yield of epoxy-terminated polydimethylsiloxane and evaluation of CO₂ thickening

Variations and model of the rheological parameters of low damage BCG − CO₂ fracturing fluid