CO 2 huff-n-puff is a promising method for enhancing oil recovery in tight reservoirs while
simultaneously contributing to CO 2 geological storage. However, the performance of this …

This study aims to investigate the impact of CO2 huff-n-puff after CO2 flooding on recovery
efficiency in tight sandstone reservoirs. The experimental methodology involved the …

One of the challenges in extracting oil from unconventional resources using hydraulic
fracturing and horizontal drilling techniques is the low primary recovery rate, which is caused …

Sequestering CO 2 in oil reservoirs using CO 2 huff-n-puff technology while maximizing oil
recovery is critical for the efficient development of shale/tight reservoirs. In this work, intrinsic …

Tight sandstone and shale oil reservoirs are one of the most promising and realistic
important oil exploration fields in the 21st century. The research on the development …

The conversion coefficient C between relaxation time T2 value and pore size was calibrated
by a high-pressure mercury injection experiment, low-temperature nitrogen adsorption …

CO 2 injection is a well-known and highly efficient enhanced oil recovery (EOR) technique.
In this method, undesirable asphaltene precipitation and deposition may occur at upstream …

Low permeability and tight reservoirs are rich in microscale and even nanoscale pores,
resulting in a large interfacial tension between oil and water in the pores. Surfactant can …

In the development of China's Shengli deep heavy oil reservoirs, steam injection is the
primary method. However, the effectiveness and efficiency of this method decline as the …

The low permeability of tight sandstone reservoirs limits the application of water flooding to
enhance oil recovery. Due to the properties of CO 2, people improve crude oil recovery by …