天然气地球科学

• 天然气地质学 • 上一篇    下一篇

塔里木盆地库车坳陷克拉苏构造带深层致密砂岩气藏储层致密化与成藏关系

高文杰,李贤庆,张光武,魏强,张吉振,祁帅,陈金明   

  1. 1.中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京 100083;
    2.中国矿业大学(北京)地球科学与测绘工程学院,北京 100083;
    3.中国石油勘探开发研究院廊坊分院天然气地质所,河北 廊坊 065007
  • 收稿日期:2017-08-13 修回日期:2017-12-11 出版日期:2018-02-10 发布日期:2018-02-10
  • 通讯作者: 李贤庆(1967-),男,浙江富阳人,教授,博士生导师,主要从事油气地质、有机地球化学、有机岩石学等方面的教学与研究. E-mail:Lixq@cumtb.edu.cn
  • 作者简介:高文杰(1992-),男,河北邯郸人,硕士研究生,主要从事油气地质研究. E-mail:gaogao357@foxmail.com.
  • 基金资助:

    2017-12-11国家科技重大专项(编号:2016ZX05007-003);国家自然科学基金项目(编号: 41572125)联合资助.

The relationship research between densification of reservoir and accumulation of the deep tight sandstone gas reservoirs of the Kelasu tectonic zone in Kuqa Depression,Tarim Basin

Gao Wen-jie,Li Xian-qing,Zhang Guang-wu,Wei Qiang,Zhang Ji-zhen,Qi Shuai,Chen Jin-ming   

  1. 1.State Key Laboratory of Coal Resources and Safe Mining,China University of Miningand Technology(Beijing),Beijing 100083,China;
    2.College of Geo-science grad Surveying Engineering,China University of Miningand Technology (Beijing),Beijing 100083,China;
    3.Langfang Branch,Research Institute of Petroleum Exploration and Development,PetroChina,Langfang 065007,China
  • Received:2017-08-13 Revised:2017-12-11 Online:2018-02-10 Published:2018-02-10

摘要:

为研究深层致密砂岩气气藏储层致密化与成藏的关系,对塔里木盆地库车坳陷克拉苏构造带的地质背景和储层特征进行分析,建立储层孔隙度与埋深的关系模型,推算储层致密化时间。利用流体包裹体均一测温分析技术,分析该区大北1、克深2深层致密砂岩气藏的成藏期次,并与储层致密化时间相比较,确定深层致密砂岩气藏的成因类型。研究表明,大北1气藏表现为晚期充注成藏的过程,其天然气成藏时间主要在库车期(约3~2Ma)以来,其白垩系巴什基奇克组砂岩储层致密化发生在新近纪康村期(约15~10Ma);克深2气藏也表现为晚期充注成藏过程,其天然气成藏主要发生在库车晚期(约2Ma)以来,而其巴什基奇克组砂岩储层在新近纪康村期(约11~10Ma)已经达到致密化。据此,确定大北1和克深2深层致密砂岩气藏类型属于“先致密后成藏型”。

关键词: 深层致密砂岩气, 储层致密化, 成藏过程, 气藏成因类型, 克拉苏构造带, 库车坳陷

Abstract:

To study the relationship of densification of reservoir and accumulation of deep tight sandstone gas reservoirs,the geological background and reservoir characteristics of Kelasu tectonic zone in Kuqa Depression were analyzed,the relation model of reservoir porosity and burial depth was established to calculate the time of reservoir densification.Using the homogenization temperature analysis technique of fluid inclusion,the accumulation period of deep tight sandstone gas reservoir in Dabei 1 and Keshen 2 gas reservoirs was analyzed.Combined with the reservoir densification time,the formation type of deep tight sandstone gas reservoir was comfirmed.Research shows that Dabei 1 gas pool is characterized by late period gas-charging reservoir process,where the gas reservoir formed since Kuqa period (about 3-2Ma),and the densification of Cretaceous Bashijiqike Formation sandstone reservoir occurred in the Kangcun period of Neogene (about 15-10Ma).Keshen 2 gas reservoir also showed a characteristic of late period gas-charging process,which occurred in the late Kuqa period (about 2Ma),while the Bashijiqike Formation sandstone reservoir in the Kangcun period of Neogene (about 11-10Ma) has reached the densification.And accordingly the research,determined the Dabei 1 and Keshen 2 deep tight sandstone gas reservoirs as “early densification and later accumulation type”.

Key words: Deep tight sandstone gas, Densification of reservoir, Accumulation process, Formation types of gas reservoir, Kelasu tectonic, Kuqa Depression

中图分类号: 

  • TE122.1

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