Effect of different injection fluids scenarios on swelling and migration of common clays in case of permeability variations: a micromodel study

Abstract Swelling and migration of present clays make damage to the oil reservoirs due low salinity waterflooding (LSWF) can induce serious problems in case recovery improvement researchers are trying solve this problem. The purpose work is investigate mechanism two phenomena swelling porous media a reservoir rock by injecting different composition LSWF using glass micromodel providing appropriate pattern injection with removal damage. Proper water flooding design, application efficient inhibitors, control among most important methods overcome problem formation clays. A series static (bulk or bottle test) dynamic tests were carried out coating kaolinite montmorillonite vicinity salt compositions. type amount these selected based on results XRD SEM mineralogical real rock, FW diluted FW, SW SW, solution 1% zirconium oxychloride 20 times seawater (SI), nanofluid MgO, SiO 2 , Al O 3 diluted. In studies conducted micromodel, only images taken used analysis mechanisms, but here, input output pressures recorded high-precision pressure transmitters, differential pressure, permeability was calculated index introduced. overlap interpretation captured changes numerical parameter all stages smart considered evaluate simultaneous separate mechanisms experiments research show that clay has destructive effects permeability, transfer from medium have promising reducing some conditions. And it necessary use compound during process, inhibitor not always suitable. Gradual reduction also introduced as prevent migration. general, study, best design fluid engineering for least scale presented.