海上某油田硫化氢成因及治理研究

渤海某油田伴生气硫化氢质量分数持续升高，通过对该油田不同层位流体性质、储层岩石组成、微生物生长情况进行分析，确定硫化氢成因为生物成因。为了解决硫化氢超标问题，开展了不同类型脱硫剂评价实验,考察了脱硫剂质量浓度、产液的pH、含水率、脱硫时间对脱硫效果的影响。结果表明，三嗪衍生物类脱硫剂TL?13适用性好、脱硫率较高。脱硫剂TL?13应用后，可将透平燃料气中硫化氢质量分数从150 μg/g降至8 μg/g，达到燃料气标准要求，为海上油田硫化氢治理提供技术参考。

Study on Cause and Treatment of Hydrogen Sulfide in an Offshore Oilfield

This paper investigated fluid properties of the reservoir,composition of the reservoir rock,and microbial growth in a Bohai oilfield,where the concentration of hydrogen sulfide continued to rise. The results indicate that biogenic origin is the main reason of hydrogen sulfide.In order to solve the problem that hydrogen sulfide content exceeds standard value,evaluation experiments of different types of desulfurizers were carried out to investigate the effects of mass concentration of desulfurizer,pH,water content and desulfurization time on desulfurization effect. The results show that 1, 3, 5?triazine derivative desulfurizer TL?13 shows the highest efficiency of desulfurizing.The concentration of hydrogen sulfide in turbine fuel gas decrease from 150 to 8 μg/g after desulfurization by desulfurizer TL?13,and reaches the standard of turbine fuel gas.This paper provided technical support and practical experience for treatment of hydrogen sulfide in offshore oilfield.