«Geology, geophysics and development of oil and gas fields»

System analysis of surface-molecular and ion-exchange processes of wetting pore channels for formation fluids filtration

UDC: 552.578.2:532.6
DOI: 10.33285/2413-5011-2022-5(365)-50-57

Authors:

¹ Institute of Control Systems NASA, Baku, Republic of Azerbaijan
² Azerbaijan State Oil and Industry University, Baku, Republic of Azerbaijan
³ SOCAR - Baku Higher Oil School, Baku, Republic of Azerbaijan

Keywords: surface-molecular interaction, ion exchange, permeability, adhesion, surfactants, asphaltenes

Annotation:

The article analyzes the current state of modeling of surface-molecular and ion-exchange processes of pore channels wetting in the process of reservoir fluids filtration, which significantly affect the oil recovery of reservoirs; the significant influence of the oil component composition and injected water on the wettability of rocks, their hydrophilization or hydrophobization and, consequently, on the reservoirs oil recovery is identified. A detailed analysis of the capillary forces between the pore channels and the reservoir fluids is also provided. A model for determining the wetting angle is proposed. Mathematical models for determining the horizontal and vertical permeability of the reservoir are developed. The obtained models were identified. A new method for determining reservoir permeability is proposed.

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