A brief review of dynamic capillarity effect and its characteristics in low permeability and tight reservoirs

Li, Ying; Luo, Hongwen; Li, Haitao; Liu, Xiangjun; Tan, Yamin; Chen, Shengnan; Cai, Jianchao

doi:10.1016/j.petrol.2020.106959

Cited by 31 publications

(21 citation statements)

References 68 publications

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“…Thus, HCF encounters the same problem with SWRF for deformable soil. Moreover, Li, Luo, Li, Liu, Tan, Chen and Cai [50] pointed out that the time-dependence of SWRC and HCF coexist. In summary, the three issues previously mentioned for SWRC, including deformation, hysteresis, and time-dependence, could also be encountered for HCF.…”

Section: Hydraulic Conductivity Functionmentioning

confidence: 99%

“…Diamantopoulos and Durner [49] comprehensively reviewed the so-defined dynamic nonequilibrium effects from a soil science and hydrology perspective, merely focusing on the air-water system in natural soil. Another most recent review can also be sourced from Li, et al [50] in petroleum engineering, more focusing on the oil-water/gas system in deep tight reservoirs. Beyond the investigations on the continuum scale, their work also briefly reviewed microscale physical pore network models [51], numerical pore network models [38] and Computational Fluid Dynamic (CFD) simulations [52][53][54][55][56].…”

Section: Introductionmentioning

confidence: 99%

“…However, those two works were published almost ten and twenty years ago and, therefore, could not involve recent contributions to this research objective. Moreover, the latest review from Li, Luo, Li, Liu, Tan, Chen and Cai [50] was given briefly without expanding details and merely focused on the dynamic effects in the tight reservoir with ultra-low permeability. Thus, there is a lack of a comprehensive overview of the state-of-art by far, especially from Geotechnics.…”

Section: Introductionmentioning

confidence: 99%

“…triggered by extremely intensive rainfall and flooding. In addition, the more precise estimation of deep reservoir production by considering dynamic effects can be applied to conduct appropriate reservoir development plans in reservoir Geotechnics [50].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Transient Two-Phase Flow in Porous Media: A Literature Review and Engineering Application in Geotechnics

Yan

Galindo‐Torres

et al. 2022

Geotechnics

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This work reviews the transient two-phase flow in porous media with engineering applications in Geotechnics. It initially overviews constitutive relationships, conventional theories, and experiments. Then, corresponding limitations are discussed according to conflicting observations and multiphase interfacial dynamics. Based on those findings, the dynamic nonequilibrium effects were so defined, which could also be abbreviated as dynamic/transient effects. Four advanced theories have already been developed to resolve these effects. This review collects them and discusses their pros and cons. In addition, this work further reviews the state-of-art in terms of experimental methods, influential factors in dynamic/transient effects, and modelling performance, as well as micromodel and numerical methods at pore-scale. Last, the corresponding geotechnical applications are reviewed, discussing their applicability in effective stress, shear strength, and deformation. Finally, the entire review is briefed to identify research gaps in Geotechnics.

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Section: Hydraulic Conductivity Functionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Transient Two-Phase Flow in Porous Media: A Literature Review and Engineering Application in Geotechnics

Yan

Galindo‐Torres

et al. 2022

Geotechnics

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“…Under dry-wet cycling conditions, there are many factors that affect the hysteresis effect of SWCCs, such as the ink bottle effect [24], the contact angle hysteresis, the pore size unevenness, the initial dry density, the number of wet and dry cycles, the stress, and the particle size. Ng et al [25] analyzed the effects on the SWCCs of Hong Kong volcanic ash soils in terms of initial dry density, initial water content, dry and wet history, soil structure, and stress, and the results indicated that the SWCCs of remodeled samples were very different from those of natural samples.…”

Section: Introductionmentioning

confidence: 99%

Effects of Contact Angle on the Hysteresis Effect of Soil‐Water Characteristic Curves during Dry‐Wet Cycles

Tao

Liu

et al. 2021

Advances in Civil Engineering

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The hysteresis characteristics of soil-water characteristic curves (SWCCs) under dry-wet cycling conditions are very important for understanding unsaturated soil properties, so it is crucial to propose an accurate and efficient method for predicting the hysteretic behaviors of SWCCs. To this end, this paper investigates the hysteresis characteristics of SWCCs in the full suction range of seven kinds of Hunan red clay with different initial dry densities by combination of the pressure plate method, the paper filter method, and the saturated salt solution method. It is found that there are, respectively, strong and weak hysteresis zones in the drying and wetting SWCCs under dry-wet cycling conditions. By combining this feature and based on the drying curve, the soil volume and contact angle changes during the drying and wetting processes are employed to predict the hysteretic behaviors of SWCCs. To verify the validity of the prediction method, the predicted curves of the samples with different initial dry densities are compared with the measured curves. The results show that in the strong hysteresis zone, the hysteresis characteristics of the drying and wetting SWCCs are mainly resulted from the changes in the soil pore structure; in the weak hysteresis zone, the hysteresis characteristics are mainly influenced by the changes in the receding and advancing contact angles corresponding to the drying and wetting processes. The Young–Laplace theory is used to transform the changes of contact angle during the drying and wetting processes into the proportional relationship k of matric suction, and the corresponding wetting curve is obtained by smoothing the drying curve. It is found that the prediction effect in the high suction part (the strong hysteresis zone) is better than that in the weak hysteresis zone, which confirms that the hysteresis effect of SWCCs in the high suction part is influenced by the contact angle. Our proposed method can greatly reduce the test period and has a significant practical application value, which provides a new idea for the prediction of SWCCs under dry-wet cycling conditions.

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An implicit consideration of fluid flow in the calculation of drying shrinkage of porous materials: Case of saturated concrete in low humidity environment

Zou,

Saad,

Grondin

et al. 2023

Num Anal Meth Geomechanics

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The drying shrinkage of porous materials is significantly dependent on external relative humidity (). The perspective of temperature increase due to the climate change will accentuate the drying phenomenon in structures in lands and cities. The evolution of shrinkage can be determined by equivalent pore pressure consisting of capillary pressure , disjoining pressure and pressure caused by interfacial energy. For concrete structures, up to condition, standard models can reproduce the drying shrinkage experiments accurately. However, as the decreases to 30%, these models seem to be limited because the measured relationship () differs from the corresponding static equilibrium relationship as the drying occurs rapidly and the dynamic fluid flow effects on capillary pressure have been neglected. In this paper, the standard shrinkage model has been improved to take into account the dynamic flow effect and the viscoelastic behaviour of the solid skeleton. The dynamic and standard models have been compared with experimental results of drying shrinkage of concrete with two different relative humidity conditions. The standard model clearly showed its limitations at low external relative humidity . However, the dynamic model showed good prediction of mass loss and shrinkage strains at high and low humidity conditions. Furthermore, the numerical and experimental investigations indicate that not only the dynamic effects but also the additional pressure induced by surface energy should be taken into account to quantify the drying shrinkage of cement‐based materials at low condition.

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A brief review of dynamic capillarity effect and its characteristics in low permeability and tight reservoirs

Cited by 31 publications

References 68 publications

Transient Two-Phase Flow in Porous Media: A Literature Review and Engineering Application in Geotechnics

Transient Two-Phase Flow in Porous Media: A Literature Review and Engineering Application in Geotechnics

Effects of Contact Angle on the Hysteresis Effect of Soil‐Water Characteristic Curves during Dry‐Wet Cycles

An implicit consideration of fluid flow in the calculation of drying shrinkage of porous materials: Case of saturated concrete in low humidity environment

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