Geochemical investigation of electrical conductivity and electrical double layer based wettability alteration during engineered water injection in carbonates

نویسندگان

چکیده

The injection of engineered water to increase the oil recovery from carbonates is increasingly becoming popular due its reduced environmental impact and low cost operation. However, related variation in electric properties rock fluid with this technique still ambiguous needs thorough investigation. This study explores electrical conductivity, ion mobility, double layer thickness, change composition a geochemical perspective. In study, we implemented an improved wettability alteration model based on conductivity Matlab-IPhreeqc coupled simulator, (EDL) thickness. concentration ionic species obtained used determine conductivity. conductivity-based modification dynamically simulated transport model. validated experimental coreflood data conducted by simulating measurements reported literature. From findings, it evident that formation temperature, sulfate concentration, dilution injected seawater has noticeable effect during injection. It important mention EDL thickness main parameter affected consequence, suggested inject high-temperature carbonate reservoirs because will mobility. mobility enhance film become stabilized. Moreover, decreases while spiking increases activity ions. ions must be controlled as agent, can cause precipitation calcium sulfate. Furthermore, caused diluted increased approximately 16–21% selected case study.

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ژورنال

عنوان ژورنال: Journal of Petroleum Science and Engineering

سال: 2022

ISSN: ['0920-4105', '1873-4715']

DOI: https://doi.org/10.1016/j.petrol.2022.110627