Distribution and treatment of harmful gas from heavy oil production in the Liaohe Oilfield, Northeast China

作者：Zhu Guangyou^*; Zhang Shuichang; Liu Qicheng; Zhang Jingyan; Yang Junyin; Wu Tuo; Huang Yi; Meng Shucui

来源：Petroleum Science, 2010, 7(3): 422-427.

DOI：10.1007/s12182-010-0088-7

• Toxic gas
• H(2)S
• heavy oil production
• TSR
• Liaohe Oilfield

The distribution and treatment of harmful gas (H(2)S) in the Liaohe Oilfield, Northeast China, were investigated in this study It was found that abundant toxic gas (H(2)S) is generated in thermal recovery of heavy oil. The H(2)S gas is mainly formed during thermochemical sulfate reduction (TSR) occurring in oil reservoirs or the thermal decomposition of sulfocompounds (TDS) in crude oil H(2)S generation is controlled by thermal recovery time, temperature and the injected chemical compounds The quantity of SO(4)(2-) in the injected compounds is the most influencing factor for the rate of TSR reaction. Therefore, for prevention of H(2)S formation, periodic and effective monitoring should be undertaken and adequate H(2)S absorbent should also be provided during thermal recovery of heavy oil. The result suggests that great efforts should be made to reduce the SO(4)(2-) source in heavy oil recovery, so as to restrain H(2)S generation in reservoirs In situ burning or desulfurizer adsorption are suggested to reduce H(2)S levels Prediction and prevention of H(2)S are important in heavy oil production This will minimize environmental and human health risks, as well as equipment corrosion

• 出版日期2010-9
• 单位中国石油天然气股份有限公司勘探开发研究院