Effect of temperature on relative permeability – Role of viscosity ratio

Esmaeili, Sajjad; Modaresghazani, J.; Sarma, Hemanta Kumar; Harding, Thomas G.; Maini, Brij B.

doi:10.1016/j.fuel.2020.118318

Cited by 24 publications

(22 citation statements)

References 46 publications

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“…Shilolwd (1965) conducted a thorough research on this topic based on the experimental data of Edmondson (1965) and was the first to propose that the infiltration curve was unaffected by temperature. Subsequently, Sufi et al (1982), Kumar and Inouye (1995), Akin et al (1998), and Esmaeili S et al (2020a) conducted displacement experiments using the steady-state and unsteady-state methods and reached the same conclusion as Shilolwd.…”

Section: Introductionmentioning

confidence: 75%

Experimental studies on influence of temperature on relative permeability curves in sandstone reservoirs

Zhai

Xing

et al. 2021

Energy Exploration & Exploitation

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It is crucial to obtain the representative relative permeability curves for related numerical simulation and oilfield development. The influence of temperature on the relative permeability curve remains unclear. An unsteady method was adopted to investigate the influence of temperature (range from 25–130 °C) on the oil–water relative permeability curve of sandstone reservoirs in different blocks. Then, the experimental data was analyzed by using an improved Johnson–Bossler–Naumann method. Results reveal that with the increase in temperature within a certain temperature range: (1) the relative permeability of the oil and water phases increases; (2) the irreducible water saturation increases linearly, whereas the residual oil saturation decreases nonlinearly, and the oil recovery factor increases; and (3) the saturation of two equal permeability points moves to the right, and hydrophilicity becomes stronger. The findings will aid future numerical simulation studies, thus leading to the improvement of oil displacement efficiency.

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Section: Introductionmentioning

confidence: 75%

Experimental studies on influence of temperature on relative permeability curves in sandstone reservoirs

Zhai

Xing

et al. 2021

Energy Exploration & Exploitation

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“…Permeability and electrical properties are crucial petrophysical characteristics. The fluid effective permeability of sandstone is affected by many factors, such as fluid saturation for each fluid, rock porosity, pore structure, and wettability. − ,− The effects of these factors cannot be described accurately. In hydrophilic sandstone with little irreducible water (only particle surface water is present), the flow path of water is similar to the conductive path.…”

Section: Conduction Model and Fluid Flow Model Of Complex Pore Struct...mentioning

confidence: 99%

“…The values of fluid relative permeability are mainly measured by water–oil relative permeability steady-state experiments and unsteady-state experiments. , Methods to improve the accuracy of fluid relative permeability-measured experiments have been studied in depth by Saraf, Schneider, Brace, and Oak . The effect of capillary force, gravity, starting pressure gradient, temperature, and viscosity on the relative permeability calculation has been studied by Civan, Zheng, Esmaeili, and Khebzegga …”

Section: Introductionmentioning

confidence: 99%

“…1,2 Methods to improve the accuracy of fluid relative permeability-measured experiments have been studied in depth by Saraf, 3 Schneider, 4 Brace, 5 and Oak. 6 The effect of capillary force, gravity, starting pressure gradient, temperature, and viscosity on the relative permeability calculation has been studied by Civan, 7 Zheng, 8 Esmaeili, 9 and Khebzegga. 10 As rock relative permeability experiments are time-consuming and rock samples cannot present the reservoir properties completely, a method of building a relative permeability curve by a capillary pressure curve was proposed by Burdine, 11 and a fractal model for relative permeability curve was put forward by Li.…”

Section: Introductionmentioning

confidence: 99%

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Estimating the Relative Permeability from the Electrical Parameters of Sandstone with a Complex Pore Structure

Xie

Yin²,

Guan³

et al. 2020

Energy Fuels

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Relative permeability is a crucial parameter for reservoir fluid-producing evaluation. In clay-free rock, water flow and electric current are dependent on the same controlling factors. The impact of pore structure on rock electrical properties and fluid flow is significant when calculating relative permeability from electrical properties in complex pore structure sandstone. In this paper, the pore geometry of complex pore structure sandstone is equivalent to tubular-and micromembrane-like shapes. A conduction model and a fluid flow model for two shapes of pores are studied. The study result shows that the flow path of water is the same as the conductive path in tubular-like-shaped pores; however, in micromembrane-like-shaped pores, water does not flow but electric current flows. Based on the above, the relative permeability calculation method from electrical properties in complex pore structure sandstone is proposed. A total of 16 rock samples selected from a complex pore structure reservoir of Dongying Formation in Nanpu Sag are used to verify the validity of the relative permeability calculation method. Rock samples are classified into five pore size distribution types according to NMR experimental data; for each type, relative permeability is calculated using the new method. The result shows that the new method-calculated relative permeability is in accordance with the experimental values and parameter calculation accuracy is improved. The relative permeability calculation method from electrical properties in complex pore structure sandstone has good application prospects and can provide important guidance for high-precision evaluation of complex pore structure reservoirs and research of rock mechanical characteristics.

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“…Relative permeability curves can describe the seepage state of multiphase fluid in porous media and play important roles in many aspects, such as history matching and the design of oil field development schemes. Studies on oil-water relative permeability [11][12][13][14][15][16][17][18][19][20][21][22] and oil-gas relative permeability [23][24][25][26][27] were carried out in recent years. For the acquisition of oil-water relative permeability curves, except that a few studies used some parameters to predict [16][17][18], most of them were measured by experiments [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

A New Method for Calculating the Relative Permeability Curve of Polymer Flooding Based on the Viscosity Variation Law of Polymer Transporting in Porous Media

Jiang

Hou

et al. 2022

Molecules

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Relative permeability of polymer flooding plays a very important role in oil field development. This paper aimed to measure and calculate the relative permeability curves of polymer flooding more accurately. First, viscosity variation law of polymer in porous media was studied. Rock particles of different diameters and cementing agent were used to make artificial cores and hydrophobically associating polymer solutions were prepared for experiments. Polymer solutions were injected into the cores filled with crude oil and irreducible water. In the process of polymer flooding, produced fluid was collected at different water saturations and locations of the core. Polymer solutions were separated and their viscosities were measured. With the experimental data, the viscosity variation rule of polymer transporting in porous media was explored. The result indicates that the viscosity retention rate of polymer solutions transporting in porous media has power function relationship with the water saturation and the dimensionless distance from the core inlet. Finally, the relative permeability curves of polymer flooding were measured by unsteady state method and the viscosity variation rule was applied to the calculation of the relative permeability curves.

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Effect of temperature on relative permeability – Role of viscosity ratio

Cited by 24 publications

References 46 publications

Experimental studies on influence of temperature on relative permeability curves in sandstone reservoirs

Experimental studies on influence of temperature on relative permeability curves in sandstone reservoirs

Estimating the Relative Permeability from the Electrical Parameters of Sandstone with a Complex Pore Structure

A New Method for Calculating the Relative Permeability Curve of Polymer Flooding Based on the Viscosity Variation Law of Polymer Transporting in Porous Media

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