Experimental Study of the Effects of Active Petroleum Compounds in Designed Water Flooding

Document Type : Research Paper

Authors

1 Experimental Study of the Effects of Active Petroleum Compounds in Designed Water Flooding

2 Chemical Engineering Collage, Iran University of Science and Technology (IUST), Tehran, Iran

3 Center for Exploration and Production Studies and Research, Research Institute of Petroleum Industry, Tehran, Iran

Abstract

Reservoir oil recovery and efficiency of EOR projects include designed water injection influenced by factors such as oil composition, porosity, permeability, rock mineral composition, porous space distribution, and pore size. The injection of designed water into the carbonate reservoir has always faced many ambiguities. This category of ambiguities has been further investigated and analyzed in this study by examining one of the influential factors, such as polar compounds of oil and its Physico-chemical interactions during the production process. Polar components in crude oil affect the electrostatic interactions at the mineral surfaces, affecting the wettability conditions. This study performed experiments measuring contact angle and spontaneous vascular process on limestone samples. For this purpose, cores with the same conditions are saturated in different oils regarding the percentage of polar compounds. Moreover, they are adjacent to specific components of active ions in designed water. In this regard, using the collected results, we can interpret and study how to participate in the reaction and the effectiveness of polar compounds in the oil. The results show that the amount of oil production due to water injection depends on the chemical composition of the oil and the interaction between water and oil, and in addition to the amount of asphaltene in the oil, it is also affected by the amount of organic carboxylic acids in crude oil.
 

Keywords


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