岩石矿物学杂志2026，Vol.45Issue(1)：137-146,10.DOI:10.20086/j.cnki.yskw.2026.5015
高温酸性油藏内源硅酸盐分解混菌与蒙脱石交互作用研究
Study on the interaction between endogenous silicate-decomposing mixed bacteria and montmorillonite in high-temperature sour oil reservoirs
摘要
Abstract
In this study,to address the reservoir injury problem triggered by montmorillonite hydration and expan-sion in high-temperature sour reservoirs(60℃,pH=6.5)in Shengli Oilfield,high-temperature-resistant silicate mixing bacterium was isolated from in-situ formation water and named as SSB-Mnt,to investigate the coupling mechanism of the modification of the mineral structure of montmorillonite.Through multi-scale characterization by X-ray diffraction analysis(XRD),Fourier transform infrared spectroscopy(FTIR),scanning electron microscopy-energy spectroscopy(SEM-EDS)and inductively coupled plasma-optical emission spectrometer(ICP-OES)com-bined with dynamic analysis of the elemental content of the system,it was found that SSB-Mnt synergized with electron transfer through the metabolic production of acid(pH value reduction from 6.6 to 5.5),the reduction of 43.8％～49.7％structural Fe3+in montmorillonite was achieved within 30 days(average Fe2+concentration 0.402 mmol/L).Mineralogical evidence suggests that microbial action resulted in montmorillonite interlayer collapse with a reduction in layer spacing from 1.49 to 1.22 nm,depolymerization of the silica-oxygen skeleton(reduction in the intensity of the Si—O—Si absorption peaks),and the formation of secondary minerals associated with elements Fe,Ca,Ti,and P.In this study,we explored the model of synergistic modification of high-temperature-resistant bacteria and minerals under reservoir conditions,and formulated the formulated medium,which provided a theoretical basis for the microbial anti-expansion technology in unconventional oil and gas reservoirs.关键词
原位耐高温硅酸盐菌/蒙脱石结构变化/异化铁还原/微生物-矿物交互/微生物缩膨Key words
In situ high-temperature-resistant silicate bacteria/montmorillonite structural change/heterogeneous iron reduction/microbial-mineral interactions/microbial condensation分类
天文与地球科学引用本文复制引用
陈风吟,胡婧,王帅栋,束青林,姬翔,周川野,王长秋,丁竑瑞,鲁安怀..高温酸性油藏内源硅酸盐分解混菌与蒙脱石交互作用研究[J].岩石矿物学杂志,2026,45(1):137-146,10.基金项目
国家重点研发计划项目(2022YFC2105200) （2022YFC2105200）
山东省泰山产业创新项目(tscy 202312058) National Key Research and Development Program of China(2022YFC2105200) （tscy 202312058）
Taishan Industri-al Innovation Project of Shandong Province(tscy202312058) （tscy202312058）
