2024年12月1日 · Carbazoles are non-hydrocarbon components in crude oil and rock extracts that have been used to assess the distance of oil and gas migration (Li et al., 1995, Larter et al., 1996, Bechtel et al., 2013). Carbazoles exhibit significant polarity under geological conditions.

2021年12月1日 · The amphoteric surfactant is found to be very effective for efficiently liberating the crude oil from carbonates at elevated temperature due to its ability to significantly lower oil-water IFT as well as to enhance wettability alteration on carbonate surface.

2024年10月23日 · Oil/water IFT is one of the key factors influencing oil recovery from carbonate reservoirs. Reducing IFT can shift the capillary forces to more favorable conditions for more...

2023年10月6日 · Displacement of petroleum from initially oil-wet carbonate rocks using brines with variable SO 4 concentrations systematically changes oil recovery, in situ contact angles, and connectivity...

2021年11月1日 · This study investigated the role of the structure and composition of polar compounds in a crude oil on the wettability of various carbonate rock samples. It included characterization of crude oils based on the asphaltenes, sulfur, and nitrogen contents.

2011年5月11日 · The acidic components of the crude oil have a profound effect on the initial wetting conditions and possible wettability alteration by seawater in carbonates. In this work, three types of crude oil...

Polar organic components (POC) present in crude oil are surface-active molecules with high affinity towards mineral surfaces. POCs are quantified by the acid and base numbers (AN and BN) with units of mgKOH/g. The POC adsorption behavior is highly influenced by the type of minerals and brines present in the reservoir system.

2020年11月9日 · Surfactants and polymers are used in enhanced oil recovery (EOR) to reduce interfacial tension and increase the viscosity of displacing fluid, respectively. For oil-wet to mixed-wet systems, especially carbonates, which tend to be heavily fractured, wettability becomes a key parameter that strongly affects oil recovery.

2020年11月9日 · Surfactants and polymers are used in enhanced oil recovery (EOR) to reduce interfacial tension and increase the viscosity of displacing fluid, respectively. For oil-wet to mixed-wet systems,...

2021年3月17日 · Exptl. studies have confirmed that acidic material in the crude oil, esp. neg. charged carboxylates, R-COO-, are the most important wetting parameters toward pos. charged carbonate surfaces that dictate the rock wettability.