摘要：High concentration of secondary hydrogen sulfide (sH2S) in thermal recovery reservoirs of Liaohe Oilfield, NE China was concluded to originate from thermochemical sulfate reduction (TSR), and no biotic source of H2S under abundant biomass has been reported in these presumed steam sterilized reservoirs ever before. In this study, we propose a new mechanism, biomass thermal decomposition for sulfur compounds (BTDS), to interpret the increasing of sH2S. Sulfur of cells’ dry weight took 0.20%–1.92% of the active strains isolated from the in-situ thermal recovery reservoirs of Liaohe Oilfield. When microbial organic sulfur compounds (MOSC) in biomass were exposed to injected steam, it resulted in the BTDS process. The isolated Bacillus subtilis D3 (G+) and Pseudomonas aeruginosa XJ14 (G?) were chosen to simulate this process. About 36% of sulfur in MOSC emitted as H2S in steam chamber by BTDS. The δ34S of H2S from produced gas ranged from 8.7‰ to 17.0‰, close to the δ34S of H2S 11.2‰ from BTDS simulation experiment. It provides new insight into the contribution and sulfur cycle made by subterranean microorganisms on H2S formation. ? 2025 The Authors

ISSN号：1672-5107

卷、期、页：卷22期4页1802-1810

发表日期：2025-04-01

期刊分区（SCI为中科院分区）：一区

收录情况：SCI（科学引文索引印刷版）,CSCD（中国科技引文期刊）（核心）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Petroleum Science

通讯作者：Zhu, Ying-Jia,Mu, Hong-Mei

第一作者：万云洋,田艳威,张同钢

论文类型：期刊论文

论文概要：Zhu, Ying-Jia,万云洋,田艳威,Mu, Hong-Mei,张同钢，Biomass thermal decomposition induced hydrogen sulfide blooming in thermal recovery reservoirs，Petroleum Science，2025，卷22期4页1802-1810

论文题目：Biomass thermal decomposition induced hydrogen sulfide blooming in thermal recovery reservoirs