Impact of nanoparticles on the surface characteristics of reservoir minerals in relation to the in-situ combustion process of enhanced oil recovery

Mazhari, V.; Hosseini, Hashem; Schaffie, Mahin; Ranjbar, Mohammad

doi:10.1007/s13204-021-02252-1

Cited by 2 publications

(1 citation statement)

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“…Anthony Kerunwa et al 22 find that the permeability and wettability of the calcined core will be improved to enhance oil recovery. Mazhari et al 23 investigated the characteristics of wettability changes in residual ISC with nanoparticles. The contribution of rock wettability to EOR by ISC is still in the shadow.…”

Section: Introductionmentioning

confidence: 99%

Role of Wettability Alteration in Enhanced Oil Recovery by In Situ Combustion: A Comprehensive Experimental and Modeling Study

Jin,

Pu,

Chen

et al. 2024

Energy Fuels

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In situ combustion (ISC) is a primary technique used to enhance oil recovery in heavy oil reservoirs. By performing controlled burning of the oil in place, the heavy oil is expected to be lighter and easier to flow. Conventional studies mainly considered the viscosity reduction during this process. This ISC process may change the fluid-rock wettability. However, the role of wettability alteration is not well investigated during ISC. To fill this knowledge gap, we performed ISC and measured the dynamic surface wettability changes under different combustion temperatures. Furthermore, relative permeability curves were interpolated to quantify the effects of wettability changes in heavy oil recovery during ISC. This study revealed wettability change during ISC. As the temperature increases, the contact angle decreases. At firing temperatures of 200, 300, 400, and 500 °C, the rock wettability changed to hydrophilicity, with a stronger hydrophilicity observed at higher temperatures. However, at 200 °C, the hydrophilicity was not strong. This was due to the low-temperature oxidation of the crude oil at the combustion temperature of 200 °C, and the oxidized oil was attached to the rock surface, causing the rock wettability to become hydrophobic. Numerical simulation results demonstrated that the transition from oil-wet to strong hydrophilic wettability is favorable for oil recovery, resulting in an increased recovery factor of 8.75%. This confirms that wettability alteration in the reservoir is one of the main mechanisms for heavy oil recovery during ISC. These findings indicate the influence of reservoir wettability on oil recovery during the ISC process and contribute to further understanding of the ISC mechanism.

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Section: Introductionmentioning

confidence: 99%