油气田环境保护2025，Vol.35Issue(2)：22-28,7.DOI:10.3969/j.issn.1005-3158.2025.02.005
油田集输系统原油溶解性硫化氢超标机理研究
Study on the Mechanism of Excessive Dissolved Hydrogen Sulfide in Crude Oil in Oilfield Gathering and Transportation Systems
李岩 1刘永光 2陈周 3刘沛华 1李淑玉 1金鹏康 4许路4
作者信息
- 1. 中国石油长庆油田分公司油气工艺研究院||低渗透油气田勘探开发国家工程实验室
- 2. 中国石油长庆油田分公司第二采油厂
- 3. 中国石油长庆油田分公司第七采油厂
- 4. 西安交通大学人居环境与建筑工程学院
- 折叠
摘要
Abstract
The development of low-permeability oil and gas fields is crucial for ensuring national energy security.However,the increasing number of sulfur-containing reservoirs has hindered stable crude oil production.Hydrogen sulfide(H2S)is widely distributed in oilfields and is released in an unorganized manner during various stages such as oil extraction and gathering and transportation,affecting the entire crude oil production process.Among these,the dissolved hydrogen sulfide in crude oil is difficult to completely remove,and its secondary release in downstream processes can lead to excessive hydrogen sulfide levels in associated gases,thereby affecting light hydrocarbon production.In response to this issue,and based on the practical application of current hydrogen sulfide treatment technologies in oilfields,this paper analyzes the mechanism behind excessive dissolved hydrogen sulfide in crude oil in the oilfield gathering and transportation system.The results show that the existing desulfurizing agents have poor oil solubility and weak removal capacity for dissolved hydrogen sulfide in crude oil.The total amount of hydrogen sulfide treated by current desulfurization processes is less than the total output.In closed gathering and transportation systems,temperature and pressure changes only cause a phase change of hydrogen sulfide and cannot completely remove it.Furthermore,the growth of sulfate-reducing bacteria and the high concentration of S2-in the injected water are significant sources of dissolved hydrogen sulfide in crude oil.关键词
原油溶解硫/脱硫剂/硫总量核算/硫酸盐还原菌/硫离子/超标机理/相关性分析Key words
crude oil dissolved sulphur/desulphurizing agents/total sulphur accounting/sulphate-reducing bacteria/sulphur ions in re-injection water/exceedance mechanism/correlation analysis分类
安全科学引用本文复制引用
李岩,刘永光,陈周,刘沛华,李淑玉,金鹏康,许路..油田集输系统原油溶解性硫化氢超标机理研究[J].油气田环境保护,2025,35(2):22-28,7.
