岩性油气藏 ›› 2016, Vol. 28 ›› Issue (4): 24–33.doi: 10.3969/j.issn.1673-8926.2016.04.004

• 油气地质 • 上一篇    下一篇

准噶尔盆地玛北斜坡区扇三角洲砂砾岩储层主控因素

邹妞妞1,2,3,张大权4,钱海涛5,吴涛5,史基安2   

  1. 1.贵州大学资源与环境工程学院,贵阳550025;2.甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,兰州730000;3.中国科学院大学,北京,100049;4.贵州省地质环境监测院,贵阳550004;5.中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000
  • 出版日期:2016-07-20 发布日期:2016-07-20
  • 作者简介:邹妞妞(1989-),女,博士,主要从事沉积储层和石油地质研究方面的工作。地址:(550025)贵州省贵阳市贵州大学花溪新校区资源与环境工程学院。E-mail:niuniu9728@126.com。
  • 基金资助:

    国家重点基础研究发展规划“973”项目“中国西部叠合盆地深部有效碎屑岩储层成因机制与发育模式”(编号:2011CB201104)和国家重大科技专项“准噶尔盆地岩性地层油气藏富集规律与目标评价”(编号:2011ZX05000-01-06)联合资助

Main controlling factors of glutenite reservoir of fan delta in Mabei slope, Junggar Basin

Zou Niuniu 1,2,3,Zhang Daquan4,Qian Haitao5,Wu Tao5,Shi Ji’an2   

  1. 1. College of Resources and Environmental Engineering,Guizhou University,Guiyang 550025,China;2. Key Laboratory of Petroleum Resources,Gansu Province/Key Laboratory of Petroleum Resources Research,Institute of Geology and Geophysics,Chinese Academy of Sciences,Lanzhou 730000,China;3. University of Chinese Academy of Sciences,Beijing 100049,China;4. Geological Environmental Monitoring Institute in Guizhou Province,Guiyang 550004,China;5. Research Institute of Exploration and Development,PetroChina Xinjiang Oilfield Company,Karamay 834000,Xinjiang,China
  • Online:2016-07-20 Published:2016-07-20

摘要:

准噶尔盆地西北缘玛北斜坡区三叠系百口泉组发育典型的扇三角洲砂砾岩储层,具有成分成熟度低、结构成熟度中等及低孔、低渗等特征。为查明砂砾岩储层主控因素,探寻有效储集体,利用铸体薄片、扫描电镜、荧光薄片和物性分析等资料,探讨了玛北斜坡区三叠系百口泉组岩性、沉积相、沉积构造和古地貌、成岩作用及油气充注对砂砾岩储层的控制作用。结果表明:岩性是砂砾岩优质储层形成的物质基础;有利沉积相对储层质量起决定性作用;沉积构造和古地貌控制砂砾岩的平面展布;成岩作用和油气充注产生的次生孔隙可有效改善储层物性。研究区有利砂砾岩储集体主要分布于水动力条件稳定且较强的扇三角洲前缘水下分流河道和河口坝,其次为扇三角洲平原分流河道。

Abstract:

Typical glutenite reservoirs of fan delta are developed in Triassic Baikouquan Formation in Mabei slope,northwestern margin of Junggar Basin, which are characterized by low porosity and low permeability with low compositional maturity and middle textural maturity. In order to disclose the main controlling factors for the development of glutenite reservoirs and predict favorable reservoir distribution, based on the data of thin sections, scanning electron microscope, thin section examination of fluorescence characteristics and physical properties, the controlling effects on glutenite reservoirs were discussed of the following aspects: lithology, sedimentary facies, sedimentary structure and palaeogeomorphology, diagenesis, as well as hydrocarbon- charging. The results show that lithology is the material basis of forming high quality glutenite reservoir; the favorable sedimentary facies is crucial for reservoir quality; sedi?mentary structure and paleogeomorphology decided by strong syngenetic faulting plays a key role in the glutinite body distribution; diagenesis and hydrocarbon-charging are favorable for improving the properties of glutenite reservoir. Fan delta front subaqueous distributary channel glutenite and mouth bar sandstone are favorable reservoirs whose hydrodynamic condition is stable and stronger, and fan delta plain distributary channel glutenite is fair.

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