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辽河油田杜84块H2S成因探讨

侯国儒

侯国儒. 辽河油田杜84块H2S成因探讨[J]. 石油实验地质, 2019, 41(2): 268-273. doi: 10.11781/sysydz201902268
引用本文: 侯国儒. 辽河油田杜84块H2S成因探讨[J]. 石油实验地质, 2019, 41(2): 268-273. doi: 10.11781/sysydz201902268
HOU Guoru. Genesis of hydrogen sulfide in Du 84 block, Liaohe Oilfield[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(2): 268-273. doi: 10.11781/sysydz201902268
Citation: HOU Guoru. Genesis of hydrogen sulfide in Du 84 block, Liaohe Oilfield[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2019, 41(2): 268-273. doi: 10.11781/sysydz201902268

辽河油田杜84块H2S成因探讨

doi: 10.11781/sysydz201902268
基金项目: 

国家科技重大专项"改善SAGD开发效果技术研究与应用"(2016ZX0512-002)资助。

详细信息
    作者简介:

    侯国儒(1985-),男,工程师,从事三次采油试验研究。E-mail:houguoru@petrochina.com.cn。

  • 中图分类号: TE345

Genesis of hydrogen sulfide in Du 84 block, Liaohe Oilfield

  • 摘要: 辽河油田杜84块超稠油由蒸汽吞吐转为蒸汽辅助重力泄油(SAGD)开发后,产生了较高浓度的H2S,导致脱硫设施投入和油气处理成本增加。通过原油、伴生气、地层水和储层矿物地球化学测试分析,H2S产量与原油含硫量、地层水SO42-浓度无明显相关性,而与储层中黄铁矿含量一致性强,黄铁矿中的硫属于生物来源,同位素范围与原油基本一致,起源于原油稠化阶段,大量形成于稠油热采阶段。高温高压热模拟实验表明,注蒸汽热力采油过程中,除含硫有机质热裂解(TDS)和硫酸盐热化学还原反应(TSR)外,黄铁矿氧化分解也是H2S形成途径之一,当注入低矿化度蒸汽对地层水稀释后,SO42-浓度下降,黄铁矿分解是H2S的主要生成途径,H2S的生成和分布受控于油藏地质条件、开发方式、开发时间和受热温度。

     

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出版历程
  • 收稿日期:  2018-06-19
  • 修回日期:  2019-01-28
  • 刊出日期:  2019-03-28

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