天然气地球科学

• 天然气地质学 • 上一篇    下一篇

四川盆地中台山地区须家河组致密砂岩气藏富集高产主控因素

唐大海,王小娟,陈双玲,吴长江,杨广广,温梦晗,朱华   

  1. 1.西南石油大学油气藏地质及开发工程国家重点实验室,四川 成都 610041; 2.中国石油西南油气田公司勘探开发研究院,四川 成都 610041; 3.西南油气田公司技术咨询中心,四川 成都 610041
  • 收稿日期:2018-06-09 修回日期:2018-09-19 出版日期:2018-11-10
  • 作者简介:唐大海(1973-),男,四川泸州人,高级工程师,在读博士,主要从事储集层地质学研究. E-mail:tangdahai@petrochina.com.cn.
  • 基金资助:
    中国石油西南油气田分公司科技处项目“川中—川西地区须家河组沉积体系研究”(编号:20180301-12)资助.

Analysis about the main controlling factors of tight gas accumulation and high output in Xujiahe Formation of Zhongtaishan area,Sichuan Basin

Tang Da-hai,Wang Xiao-juan,Chen Shuang-ling,Wu Chang-jiang,Yang Guang-guang,Wen Meng-han,Zhu Hua   

  1. 1.State Key Laboratory of Oil and Gas Geology and Exploitation,Southwest Petroleum University,Chengdu 610041,China; 2.Research Institute of Exploration and Development,PetroChina Southwest Oil and Gas Field Company,Chengdu 610041,China; 3.Technical Consulting Center of Southwest Oil and Gas Field company,Chengdu 610041,China
  • Received:2018-06-09 Revised:2018-09-19 Online:2018-11-10

摘要: 四川盆地须家河组具有典型的致密砂岩气特征。2006年以来四川盆地大川中地区须家河组致密砂岩先后发现安岳须二段气藏、合川须二段气藏等多个大型岩性气藏,累计提交三级地质储量万亿立方米,勘探成果显著,但气藏投入开发后普遍产水,且水产量较高,累计产气量超过5 000×104m3的高产井较少。2012年,在川中—川西过渡带中台山地区钻探了风险探井ZT1井,在须家河组须二段获高产工业气流。投产后该井日产气量高、产微量水,目前已累计产天然气超1×108m3。在区域地质研究基础上,通过大量生产井地质条件分析,开展了中台山地区与川中其他地区须二段气藏高产因素差异性分析,明确了优质烃源岩、优质河道砂岩储层、天然裂缝是中台山地区油气富集高产的主控因素,优质烃源岩发育为致密砂岩提供充足气源;优质河道砂岩储层形成高丰度气藏;天然裂缝是油气高产的关键。

关键词: 中台山地区, 须家河组, 致密砂岩, 高产, 主控因素

Abstract: The Xujiahe Formation in Sichuan Basin has typical characteristics of tight sandstone gas.The exploration of the Xujiahe tight gas reservoir has obtained good achievements since 2006,which has found Anyue and Hechuan Gas Fields.The cumulative total amount of the Tertiary geological reserves is over one trillion cubic meters.But these fields have large water production after the development of gas reservoirs.Only a small number of wells have cumulative output of more than 50 million cubic meters.In 2012,the risk exploration Well ZT1 was drilled in Zhongtaishan area,the transitional zone of central-west Sichuan Basin,tested a large gas flow from Xujiahe Formation reservoir.Besides,the well has a high volume of gas production and a small amount of water-yielding,and has already produced more than a trillion cubic meters of natural gas so far.By means of analyzing the geological conditions of large production wells of typical gas reservoirs,the difference analysis of high yield factors between the Zhongtaishan area and other areas in central Sichuan is carried out.It is believed that the accumulation conditions and main controlling factors of gas reservoir in Zhongtaishan area are the high quality hydrocarbon source,channel sandstone reservoir and tectonic fractures.The high quality source rock provides sufficient gas source for the tight sandstone.Thehigh-quality channel sandstone reservoir forms the high-abundance gas reservoir and natural fracture is the key to high oil and gas yield.

Key words: Zhongtaishan area, Xujiahe Formation, Tight gas, High production, Main controlling factors of gas accumulation

中图分类号: 

  • TE122.1

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