Unveiling the Changes in the Molecular Groups of Tight Sandstones in Response to an Electric Field.

ABSTRACT: The electric field method proved in the lab and oil fields is an effective and fast way to significantly improve oil recovery, which can be applied to greatly realize the urgent-need requirements for energy, especially in tight sandstones. Generally, the changed molecular groups treated with an electric field modulate the wettability of reservoirs, affecting the final oil recovery. Herein, the investigation of the impact of the electric field on the molecular groups of reservoirs is imperative and meaningful. In this paper, tight sandstones were placed into a particular instrument and subjected to various strengths of the electric field. Nine treated powders and one untreated powder of tight sandstones were processed by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron

SUBMITTER: Zhang W 

PROVIDER: S-EPMC8567345 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature