A novel experimental-theoretical method to improve MMP estimation using VIT technique

Safaei, Ali; Riazi, M.R.; Shariat, Saman

doi:10.1016/j.petrol.2022.111182

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…MMP is an important parameter to judge the miscible state between injected gas and crude oil during gas flooding. Many methods can be used to determine the MMP of gas flooding, including the slim tube experiment, the interfacial tension test, EoS prediction and empirical formula calculation [25][26][27][28][29][30]. In this study, three methods were used to determine the MMP of natural gas flooding in block B111, including using the above established PVT model to predict the IFT between natural gas and crude oil; using the PVT model to simulate the multiple contact process; and using the empirical formula of Hou [27].…”

Section: Mmp Between Injected Natural Gas and Crude Oilmentioning

confidence: 99%

Study on Interaction Characteristics of Injected Natural Gas and Crude Oil in a High Saturation Pressure and Low-Permeability Reservoir

Wang,

Zhang,

Wang

et al. 2023

Processes

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Natural gas injection is considered for enhanced oil recovery (EOR) in a high saturation pressure reservoir in block B111 of the Dagang oilfield, China. To investigate the interaction characteristics of injected natural gas and crude oil, the ability for dissolution–diffusion and miscibility–extraction of natural gas in crude oil was tested using a piece of high-temperature and high-pressure PVT equipment. The physical properties and minimum miscible pressure (MMP) of the natural gas–crude oil system and their interaction during dynamic displacement were analyzed using the reservoir numerical simulation method. The results show the following: (1) Under static gas–oil contact conditions, natural gas has a significant dissolution–diffusion and miscibility–extraction effect on the crude oil in block B111, especially near the gas–oil interface. The content of condensate oil in gas phase is 10.14–18.53 wt%, while the content of dissolved gas in oil phase reaches 26.17–57.73 wt%; (2) Under the reservoir’s conditions, the saturated solubility of natural gas injected in crude oil is relatively small. The effect of swelling and viscosity reduction on crude oil is limited. As the pressure increases with more natural gas dissolved in crude oil, the phase state of crude oil can change from liquid to gas; accordingly, the density and viscosity of crude oil will be greatly reduced, presenting the characteristics of condensate gas; (3) The MMP of natural gas and crude oil is estimated to be larger than 40 MPa. It mainly forms a forward-contact evaporative gas drive in block B111. The miscible state depends on the maintenance level of formation pressure. The injected natural gas has a significant extraction effect on the medium and light components of crude oil. The content of C2–C15 in the gas phase at the gas drive front, as well as the content of CH4 and C16+ in the residual oil at the gas drive trailing edge, will increase markedly. Accordingly, the residual oil density and viscosity will also increase. These results have certain guiding significance for understanding gas flooding mechanisms and designing gas injection in block B111.

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Section: Mmp Between Injected Natural Gas and Crude Oilmentioning

confidence: 99%

Study on Interaction Characteristics of Injected Natural Gas and Crude Oil in a High Saturation Pressure and Low-Permeability Reservoir

Wang,

Zhang,

Wang

et al. 2023

Processes

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“…Existing methods for predicting the MMP of CO 2 -oil systems typically involve experimental tests (Novosad et al, 1990;Nguyen et al, 2015;Zhang et al, 2019), empirical modeling (Shokir, 2007;ZareNezhad, 2016), and numerical simulations (Zhao and Fang, 2020;Ge et al, 2021). Experimental techniques, such as the slim-tube experiment (Hao et al, 2020;Lu et al, 2022), rising bubble apparatus (Li and Luo, 2017), and vanishing interfacial tension tests (Safaei et al, 2023), have been widely utilized to measure the MMP under different injected gases. However, these methods are generally applied to measure the MMP of fluids in the bulk phase, rather than in nanopores (Zhang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Accurate determination of nano-confined minimum miscible pressure to aid CO2 enhanced oil recovery and storage in unconventional reservoirs

He,

Wei,

Zhao

et al. 2024

Adv. Geo-Energy Res.

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Chemical assisted reduction on minimum miscibility pressure of viscous crude oils

Türkmenoğlu,

Önel

2025

Fuel

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A novel experimental-theoretical method to improve MMP estimation using VIT technique

Cited by 4 publications

References 34 publications

Study on Interaction Characteristics of Injected Natural Gas and Crude Oil in a High Saturation Pressure and Low-Permeability Reservoir

Study on Interaction Characteristics of Injected Natural Gas and Crude Oil in a High Saturation Pressure and Low-Permeability Reservoir

Accurate determination of nano-confined minimum miscible pressure to aid CO2 enhanced oil recovery and storage in unconventional reservoirs

Chemical assisted reduction on minimum miscibility pressure of viscous crude oils

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