Characterization of bitumen and a novel multiple synergistic method for reducing bitumen viscosity with nanoparticles and surfactants

Liu, Yunfeng; Qiu, Zhengsong; Zhao, Chaoying; Nie, Zhen; Zhong, Hanyi; Zhao, Xin; Liu, Shujie; Xing, Xijin

doi:10.1039/d0ra00335b

Cited by 26 publications

(13 citation statements)

References 45 publications

(50 reference statements)

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“…The location of the study area is in the L block in the eastern Ordos Basin (Figure 1). It is in the intersection part of the Jinxi Flexural Zone and the Yishan Slope 1,27 . The Upper Paleozoic strata in this area are relatively flat, and the structural fluctuation per 1 km of plane distance is generally <20 m. The Zijinshan Pluton (diapir magmatic rocks) is located in the southeastern region of the study area (Figure 1).…”

Section: Geological Backgroundmentioning

confidence: 94%

“…[20][21][22][23][24][25] The fracture evaluation technology of tight reservoirs is based on the following three aspects: reservoir geological characteristics, rock physics, and geostress properties. [26][27][28] The accurate identification of fractures can help people to better understand the contribution of fractures to fluid seepage, the evolution of fractures and its main controlling factors. 29,30 Logging data have high vertical resolution, so it can be used to identify fractures.…”

Section: Introductionmentioning

confidence: 99%

“…Tight sandstone gas has a good development prospect; the study of fracture evaluation has drawn more and more attentions 20‐25 . The fracture evaluation technology of tight reservoirs is based on the following three aspects: reservoir geological characteristics, rock physics, and geostress properties 26‐28 . The accurate identification of fractures can help people to better understand the contribution of fractures to fluid seepage, the evolution of fractures and its main controlling factors 29,30 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A new method for identifying fractures in tight sandstone of a gentle structural area using well logs

Guo

Wang²,

2020

Energy Science & Engineering

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Section: Geological Backgroundmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A new method for identifying fractures in tight sandstone of a gentle structural area using well logs

Guo

Wang²,

2020

Energy Science & Engineering

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“…Studies demonstrate that band structures can be tuned effectively and conveniently according to such a strategy. In our further investigation, a phenomenon is found that the thermal-sensitive materials can own a notable viscoelasticity, which means the storage modulus of materials is strongly dependent on the frequency of wave propagation [27][28][29][30][31]. Previous research shows that the band structures of PCs are considerably influenced by frequencydependent storage modulus.…”

Section: Introductionmentioning

confidence: 95%

Band gap manipulation of viscoelastic functionally graded phononic crystal

Bian

Yang

Zhou

et al. 2020

Nanotechnology Reviews

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AbstractIn this study, band gaps of SH-waves (horizontally polarized shear waves) propagating in a thermal-sensitive viscoelastic matrix are investigated. Metallic films acting as heat sources are periodically embedded into the matrix, which establishes a periodically inhomogeneous thermal field. The homogenous matrix is therefore transformed into functionally gradient phononic crystals (PCs). A three-parameter solid model is employed to describe the viscoelasticity of the present matrix. By virtue of a transfer matrix method incorporated within a laminated model, the dispersion equation of SH-waves is finally obtained, from which the band gaps are determined. The transmission spectra of a finite-periodic PC are also solved to validate the band gaps. In numerical examples, the influences of incident angles of SH-waves and viscoelasticity of matrix on band gaps are discussed first. Then the research focuses on the means to tune the band gaps by manipulating the inputted powers of heat sources. Numerical examples demonstrate that such a strategy is effective and convenient in tuning the positions and widths of band gaps. A viscous parameter, i.e., the ratio of initial-state to final-state storage moduli, significantly affects the band locations and bandwidths, while the locations of low-order band gaps hardly move with the incident angle of SH-waves. Band gaps of several orders are expected to locate in lower-frequency domain, and the total bandwidth becomes larger as the inputted heat flux increases. This paper lays theoretical foundation to manufacture viscoelastic functionally graded PCs which can be used in frequency-selective devices.

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“…Surfactants [ 8 , 9 ], polymers [ 10 , 11 ], alkalis [ 12 , 13 ], ions [ 14 , 15 ], foams [ 16 , 17 ], and nanofluids [ 18 , 19 , 20 , 21 , 22 ] and other chemicals were used during the C-EOR process. The mechanism of EOR process was wettability alteration [ 23 , 24 ], interfacial tension decrease [ 25 , 26 , 27 ], structural disjoining pressure alteration [ 28 , 29 ], viscosity decrease [ 30 ], and other mechanisms [ 21 ]. Among these mechanisms, the oil–solid interaction force was the main mechanism of oil recovery.…”

Section: Introductionmentioning

confidence: 99%

Surfactants Enhanced Heavy Oil–Solid Separation from Carbonate Asphalt Rocks-Experiment and Molecular Dynamic Simulation

Hou

Sun

2021

Nanomaterials

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In this study, surfactants were used to enhance heavy oil–solid separation, and a detailed mechanism was explored by SARA (saturates, aromatics, resins, asphaltenes) analysis, element analysis, AFM measurement, and molecular dynamic simulation. Surfactants could effectively decrease oil/solid interaction force and then oil–solid separation would be enhanced. The oil–solid interactive force was in relation to surfactants concentration, pH value, asphaltene content, and salinity. The molecular dynamics simulation results show that the dissociation of saturated hydrocarbon, aromatic hydrocarbon, resin, and asphaltene (SARA) on carbonate minerals is gradually weakened for all surfactants. In the process of molecular dynamics simulation of surfactant stripping SARA, firstly, the surfactant molecules adsorb on the surface of SARA molecules. After that, the surfactant peels SARA molecules off the surface of calcite under the influence of molecular thermal motion. In this process, surfactant molecules will not be directly adsorbed on the surface of trace minerals. The results of energy/temperature balance indicated that saturates, aromatics and resins could remain stable when the molecular dynamics simulation time reached 2000 ps with the phenomenon that saturates, aromatics could liberate from minerals totally within 2000 ps. The molecular dynamics simulation of asphaltenes will not liberate from calcite surface within 6000 ps, meanwhile, they could not reach the energy balance/energy balance within 6000 ps. The functional groups of surfactant molecules would have interactions with the SARA functional group, resulting in different dissociation effects of SARA. The results of molecular dynamics simulation are consistent with the experiment results. The separation effect of saturated hydrocarbon, aromatic hydrocarbon, resin, and asphaltene in five kinds of surfactants were different. The molecular dynamic simulation results were in accordance with the SARA analysis.

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Characterization of bitumen and a novel multiple synergistic method for reducing bitumen viscosity with nanoparticles and surfactants

Abstract: This paper is concerned with the formation of bitumen during the drilling of the H oilfield in Iraq.

Cited by 26 publications

References 45 publications

A new method for identifying fractures in tight sandstone of a gentle structural area using well logs

A new method for identifying fractures in tight sandstone of a gentle structural area using well logs

Band gap manipulation of viscoelastic functionally graded phononic crystal

Surfactants Enhanced Heavy Oil–Solid Separation from Carbonate Asphalt Rocks-Experiment and Molecular Dynamic Simulation

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