Discussion on the sweep efficiency of hybrid steam-chemical process in heavy oil reservoirs: An experimental study

Review Energy & Fuels

A review of the mechanics of heavy-oil recovery by steam injection with chemical additives

Randy Agra Pratama et al.

Summary: Chemical additives play a crucial role in improving heavy oil recovery during steam injection, with the potential to increase recovery by over 80%. Synergy among the recovery mechanisms induced by chemical additives is key to enhancing recovery efficiency in late-stage steam injection applications.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2022)

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Article Chemistry, Physical

Pore-scale dynamic behavior and displacement mechanisms of surfactant flooding for heavy oil recovery

Jianbin Liu et al.

Summary: This study evaluates the effectiveness of surfactant flooding at different concentrations and visualizes the microscopic displacement mechanism of heavy oil surfactant flooding. The optimal concentration is determined, and the results are significant for optimizing enhanced oil recovery technology and developing high-efficiency surfactants.

JOURNAL OF MOLECULAR LIQUIDS (2022)

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Article Energy & Fuels

Experimental investigation on the recovery performance and steam chamber expansion of multi-lateral well SAGD process

Xiaohu Dong et al.

Summary: This paper investigates the recovery performance of the multi-lateral well SAGD process in heavy oil reservoirs using a three-dimensional physical model. The advantages of multi-lateral wells in terms of liquid production and steam chamber expansion are discussed based on experimental observations. The distribution of residual oil saturation after the SAGD process is also analyzed. The results show that the application of multi-lateral wells can effectively increase the oil recovery factor and improve the recovery time compared to the conventional dual horizontal well SAGD process.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2022)

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Article Energy & Fuels

Image recognition model based on deep learning for remaining oil recognition from visualization experiment

Yanwei Wang et al.

Summary: Steam flooding and chemical flooding have been proven to be effective methods for developing heavy oil reservoirs, but the majority of oil reserves still remain after these processes. A surfactant-polymer (SP) flooding system was developed and tested, showing a significant increase in oil recovery. Through image recognition technology, different types of remaining oil were identified and classified, laying the foundation for further understanding of oil distribution under different displacement methods.

FUEL (2021)

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Article Chemistry, Physical