On The Estimation Of Phase Behavior Of CO2-Based Binary Systems Using ANFIS Optimized By GA Algorithm

Motie, Mohadeseh; Bemani, Amin; Soltanmohammadi, Ramin

doi:10.3997/2214-4609.201803006

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…The gas-oil ratio increased slowly at first and then rapidly, with the turning point being 0.6 HCPV. A new and accurate calculation method has been proposed to predict the vapor-liquid equilibrium of CO2 binary mixtures, which is not entirely dependent on experimental data [24]. Carbon capture and storage (CCS) has become a promising way to solve this challenge.…”

Section: Long Core Displacement Characteristicsmentioning

confidence: 99%

“…The water flooding efficiency of the Lunnan oil formation is close to the limit. After conversion to carbon dioxide flooding development, on the one hand, the co-permeability interval is increased, and the fluidity of crude oil is increased; on the other hand, the residual oil A new and accurate calculation method has been proposed to predict the vapor-liquid equilibrium of CO 2 binary mixtures, which is not entirely dependent on experimental data [24]. Carbon capture and storage (CCS) has become a promising way to solve this challenge.…”

Section: Oil and Gas Phase Permeability Characteristicsmentioning

confidence: 99%

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Experimental Study on Carbon Dioxide Flooding Technology in the Lunnan Oilfield, Tarim Basin

Wu,

Feng,

Tang

et al. 2024

Energies

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The Lunnan Oilfield in the Tarim Basin is known for its abundant oil and gas resources. However, the marine clastic reservoir in this oilfield poses challenges due to its tightness and difficulty in development using conventional water drive methods. To improve the recovery rate, this study focuses on the application of carbon dioxide flooding after a water drive. Indoor experiments were conducted on the formation fluids of the Lunnan Oil Formation, specifically investigating gas injection expansion, thin tube, long core displacement, oil and gas phase permeability, and solubility. By injecting carbon dioxide under the current formation pressure, the study explores the impact of varying amounts of carbon dioxide on crude oil extraction capacity, high-pressure physical parameters of crude oil, and phase characteristics of formation fluids. Additionally, the maximum dissolution capacity of carbon dioxide in formation water is analyzed under different formation temperatures and pressures. The research findings indicate that the crude oil extracted from the Lunnan Oilfield exhibits specific characteristics such as low viscosity, low freezing point, low-medium sulfur content, high wax content, and medium colloid asphaltene. The measured density of carbon dioxide under the conditions of the oil group is 0.74 g/cm3, which closely matches the density of crude oil. Additionally, the viscosity of carbon dioxide is 0.0681 mPa·s, making it well-suited for carbon dioxide flooding. With an increase in the amount of injected carbon dioxide, the saturation pressure and gas-oil ratio of the crude oil also increase. As the pressure rises, carbon dioxide dissolves rapidly into the crude oil, resulting in a gradual increase in the gas-oil ratio, expansion coefficient, and saturation pressure. As the displacement pressure decreases, the degree of carbon dioxide displacement initially decreases slowly, followed by a rapid decrease. Moreover, an increase in the injection rate of carbon dioxide pore volume leads to a rapid initial improvement in oil-displacement efficiency, followed by a slower increase. Simultaneously, the gas-oil ratio exhibits a slow increase initially, followed by a rapid rise. Furthermore, as the displacement pressure increases, the solubility of carbon dioxide in water demonstrates a linear increase. These research findings provide valuable theoretical data to support the use of carbon dioxide flooding techniques for enhancing oil recovery.

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Section: Long Core Displacement Characteristicsmentioning

confidence: 99%

Section: Oil and Gas Phase Permeability Characteristicsmentioning

confidence: 99%

Experimental Study on Carbon Dioxide Flooding Technology in the Lunnan Oilfield, Tarim Basin

Wu,

Feng,

Tang

et al. 2024

Energies

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“…Although the Changning, Weiyuan, and Zhaotong shale plays have successfully developed shallow (less than 3500 m deep) shale gas [4], the deep shale in the Luzhou area holds even greater potential for development and is expected to be the next target for shale gas exploration [2]. Studying the strata and fluid properties is crucial for understanding the accumulation of hydrocarbons and accurately predicting their development processes [5][6][7]. Additionally, a high-resolution sequence stratigraphic framework not only aids in predicting the oil and gas sweet spots and correlating regions but also provides insights into the evolution of the sedimentary basin [1,[8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Sequence Stratigraphy and Implications for Shale Gas Exploration in the Southern Sichuan Basin, South China

Meng

Pan

et al. 2023

JMSE

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In contrast to the widely used sequence stratigraphic models for passive continental margins, the stacking patterns of strata within epeiric seas, which are influenced by regional tectonic activity, may display opposing characteristics during the same geological period. These variations serve as a record of basin evolution and also affect the accumulation of hydrocarbons within the strata. Our study investigated the development potential of the deep Longmaxi Shale in the southern Sichuan Basin by examining the sequence stratigraphy and sedimentary fill patterns. Using a combination of core observation, well-logging data analysis, and 3D seismic profile interpretation, we aimed to gain an understanding of the sedimentary fill history of the Longmaxi Shale during the Early Silurian. Our analysis revealed that deglaciation and regional tectonic events affected the sequence stratigraphy, resulting in unconformities that were identifiable using seismic data and wireline logs. Through an analysis of thirty wireline logs and two seismic profiles, we identified two third-order sequences suggested in the Lower Longmaxi Formation. Within the two third-order sequences were five systems tracts, with the first exhibiting a complete cycle of sea-level change and the second cycle being incomplete due to regional tectonic events. The graptolite succession on the upper Yangtze Platform provided a temporal view of the sequence stratigraphy and sedimentation rates of the Longmaxi Shale. The thickness trends of the systems tracts reflected the interplay of short-term eustasy fluctuations, subsidence, and uplift. Our analysis suggests that regional subsidence played a significant role in the deposition of the second transgressive systems tract (TST) in the Weiyuan and Luzhou areas, which represents a promising target for shale gas exploration, in addition to the first TST. However, the Changning area experienced a relative sea-level decrease due to the intense uplift of the Qianzhogn Paleo-uplift and the increased supply of sediment and is interpreted as a highstand systems tract (HST); it is not considered to have shale gas exploration potential.

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Prediction of shear strength in UHPC beams using machine learning-based models and SHAP interpretation

Ye,

Li,

Yoo

et al. 2023

Construction and Building Materials

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On The Estimation Of Phase Behavior Of CO2-Based Binary Systems Using ANFIS Optimized By GA Algorithm

Cited by 5 publications

References 4 publications

Experimental Study on Carbon Dioxide Flooding Technology in the Lunnan Oilfield, Tarim Basin

Experimental Study on Carbon Dioxide Flooding Technology in the Lunnan Oilfield, Tarim Basin

Sequence Stratigraphy and Implications for Shale Gas Exploration in the Southern Sichuan Basin, South China

Prediction of shear strength in UHPC beams using machine learning-based models and SHAP interpretation

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