ArticleScientific reports2026
Microfluidic investigation of synergistic mechanisms of microsphere-microbial compound system for enhanced oil recovery.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
Field tests have shown that microsphere-microbial compound flooding improves the oil recovery factor. The compound system consists of surfactant-modified polyacrylamide nanospheres (initial diameter is 150 nm) and an enriched indigenous microbial consortium. However, the detailed mechanisms remain unclear. To address this gap, this study employs microscopic visualization and particle image velocimetry (PIV) to compare the compound system with single-component microsphere and microbial flooding. Results indicate that the compound system achieves recovery factors 7.26% and 4.54% higher than microbial and microsphere flooding, respectively, confirming a synergistic effect. Its displacement efficiency and sweep effectiveness are also superior. Mechanistic analysis reveals a stage-dependent advantage. During injection, surfactants released from microspheres alter wettability. In the shut-in stage, microbial metabolites further enhance displacement, producing dual benefits. Under dynamic conditions, blocking performance was quantified. PIV results demonstrate that the compound system significantly reduces velocity heterogeneity of the flow field. Single‑channel velocimetry reveals smaller velocity fluctuations (< 15%), indicating stronger shear stability and improved plugging performance relative to either agent alone. Microscopic observations further reveal aggregate structures in which the microsphere skeleton supports microbial adhesion. This enables stable spatial distribution under high shear and effective blockage of dominant channels. By integrating quantitative evidence from visualization and velocimetry, this study provides a useful approach for evaluating compound flooding performance aimed at improving oil recovery for mid-low permeability reservoirs.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.