Development of Anionic-Modified Black Nanosheet and Its Oil Imbibition Performance in Ultralow-Permeability Reservoirs
Daoyi Zhu,
Yanyan Gao,
Ling Bai
et al.
Abstract:Ultralow-permeability oil reservoirs are characterized
by small
pore throats, ultralow permeability, and high fluid flow resistance,
which often lead to challenging injection during water flooding processes.
Black nanosheet, as an emerging sheet-like nano oil displacement material,
can alter the wettability of reservoir rocks, effectively improving
water injection performance. However, its dispersion stability in
an aqueous solution is insufficient, leading to probable aggregation
during water flooding and aff… Show more
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