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Answer 1: Being a liquid, water is not itself wet, but can make other solid materials wet. Wetness is the ability of a liquid to adhere to the surface of a solid, so when we say that something is wet, we mean that the liquid is sticking to the surface of a material.
Multifunctional plugging remover for oil extraction and acidification and preparation method thereof
The application discloses a multifunctional plugging removing agent for oil extraction and acidification of oil fields and a preparation method thereof. The plugging removing agent comprises the following raw materials in percentage: 10-15% of hydrochloric acid, 5-8% of formic acid, 5-8% of citric acid, 0.3-0.5% of OP-10 and 1-1.5% of a modified additive, and the balance is water. In the using process of the acidification plugging removing agent, the modified additive can reduce the interfacial tension, change the rock surface into water wettability, make the residual acid after reaction and loose particles more easily carried back, significantly improve the permeability recovery rate, the nano silicon dioxide in the modified additive can fill the cavity of the surface polysiloxane chain segment, can prevent the curling of the polysiloxane chain segment and the collapse of the network structure, and further improve the salt resistance of the modified additive, ensure the penetration effect of the acid liquid, the cage type silsesquioxane structure on the surface can form a dense three-dimensional network, greatly improve the mechanical strength, shear resistance and long-term thermal stability of the oil displacement system, and is not easy to degrade and fail.
Owner:SHAANXI HUATIAN ENERGY TECH CO LTD