石油学报 ›› 2016, Vol. 37 ›› Issue (S2): 31-38.DOI: 10.7623/syxb2016S2004

• 地质勘探 • 上一篇    下一篇

黄骅坳陷大港探区高含H2S天然气地球化学特征及成因

国建英1,2, 付立新3, 肖鑫4, 王东良1,2, 李剑1,2, 张璐1,2, 肖敦清3, 谢增业1,2, 柳晓萱5, 王金友6   

  1. 1. 中国石油天然气集团公司天然气成藏与开发重点实验室 河北廊坊 065007;
    2. 中国石油勘探开发研究院廊坊分院 河北廊坊 065007;
    3. 中国石油大港油田公司勘探开发研究院 天津 300280;
    4. 西安石油大学地球科学与工程学院 陕西西安 710065;
    5. 北京大学地球与空间科学学院 北京 100871;
    6. 中国石油渤海钻探工程公司第二录井分公司 河北廊坊 065007
  • 收稿日期:2016-07-11 修回日期:2016-11-30 出版日期:2016-12-30 发布日期:2017-03-08
  • 通讯作者: 国建英,男,1971年12月生,1994年获江汉石油学院学士学位,2009年获中国矿业大学(北京)博士学位,现为中国石油勘探开发研究院廊坊分院高级工程师,主要从事石油、天然气地球化学及成藏的研究工作。Email:gjy_17711224@petrochina.com.cn
  • 作者简介:国建英,男,1971年12月生,1994年获江汉石油学院学士学位,2009年获中国矿业大学(北京)博士学位,现为中国石油勘探开发研究院廊坊分院高级工程师,主要从事石油、天然气地球化学及成藏的研究工作。Email:gjy_17711224@petrochina.com.cn
  • 基金资助:

    国家重大科技专项(2016ZX05007)及中国石油天然气股份有限公司科学研究与技术开发项目(2016B-0602、2014E-06-02)资助。

Geochemical characteristics and genesis of high-H2S natural gas in the Dagang exploration area,Huanghua depression

Guo Jianying1,2, Fu Lixin3, Xiao Xin4, Wang Dongliang1,2, Li Jian1,2, Zhang Lu1,2, Xiao Dunqing3, Xie Zengye1,2, Liu Xiaoxuan5, Wang Jinyou6   

  1. 1. CNPC Key Laboratory for Natural Gas Accumulation and Development, Hebei Langfang 065007, China;
    2. Langfang Branch, PetroChina Research Institute of Petroleum Exploration & Development, Hebei Langfang 065007, China;
    3. Research Institute of Exploration and Development, PetroChina Dagang Oilfield Company, Tianjin 300280, China;
    4. School of Earth Sciences and Engineering, Xi'an Shiyou University, Shaanxi Xi'an 710065, China;
    5. School of Earth and Space Science, Peking University, Beijing 100871, China;
    6. Branch of the Second Mudioging, CNPC Bohai Drilling Engineering Company Limited, Hebei Langfang 065007, China
  • Received:2016-07-11 Revised:2016-11-30 Online:2016-12-30 Published:2017-03-08

摘要:

渤海湾盆地继冀中坳陷晋县凹陷发现H2S气藏后,在黄骅坳陷大港探区又发现了高含H2S气藏,在煤成气气藏中发现如此高含量的H2S和CO2在国内还属首次,酸性气体的成因也引起国内学者的关注。通过气、岩有机地球化学参数的对比,认为该区高含量H2S归因于TSR反应,揭示了煤成气区同样可以发生TSR,丰富了过去只在海相原油裂解气区发生TSR的地质认识;高含量有机或有机-无机混合的CO2除了与碳酸盐岩的热变质、TSR有关外,与烃类气体属于煤成气有很大的关系。黄骅坳陷大港探区H2S的富集受储层中的硫源丰富程度和地层温度的控制,高含H2S天然气主要分布在石炭系-二叠系覆盖且埋深较大的中南部地区,如埕海、泊古-乌马营-王官屯等地区。研究成果对该区高含酸性天然气形成机制以及天然气下一步勘探部署工作都具有积极指导意义。

关键词: 硫化氢, TSR, 天然气成因, 大港探区, 黄骅坳陷

Abstract:

After the discovery of H2S gas reservoir in Jinxian Depression, Jizhong Sag, Bohai Bay Basin, high-H2S gas reservoir was discovered in the Dagang exploration area, Huanghua sag. Such high H2S and CO2 contents have been first found in coal-formed gas reservoir in China, and the genesis of acid gas has attracted attentions of domestic scholars. Through comparing the organic geochemistry parameters of gas and rock, it is believed that high content of H2S in the area is the product of thermochemical sulphate reduction(TSR), which reveals that TSR can also occur in the coal-formed gas area and enriches the previous geological recognition that TSR only occurs in the marine crude oil cracking gas area; high content of organic-inorganic CO2 is related to thermal metamorphism of carbonate rock and TSR, and is also strongly associated with coal-formed hydrocarbon gas. The enrichment of H2S in the Dagang exploration area, Huanghua Sag is controlled by formation temperature and the enrichment degree of sulfur source in reservoir. High-H2S natural gas is mainly distributed in the south central region covered by Carboniferous-Permian strata with a relatively great burial depth, such as Chenghai, Bogu-Wumaying-Wangguantun, and etc. The research results have a positive guiding significance to discover the formation mechanism of high acidic natural gas and carry out the next exploration deployment of natural gas.

Key words: Hydrogen sulfide, thermochemical sulphate reduction, Genesis of natural gas, Dagang exploration area, Huanghua depression

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