岩性油气藏 ›› 2017, Vol. 29 ›› Issue (5): 28–35.doi: 10.3969/j.issn.1673-8926.2017.05.004

• 油气地质 • 上一篇    下一篇

准南上二叠统芦草沟组非常规油气储层特征

王正和, 余谦   

  1. 中国地质调查局成都地质调查中心, 成都 610081
  • 收稿日期:2017-03-13 修回日期:2017-05-03 出版日期:2017-09-21 发布日期:2017-09-21
  • 通讯作者: 余谦(1965-),男,硕士,教授级高级工程师,主要从事油气勘探方面的研究工作。Email:49032646@qq.com。 E-mail:49032646@qq.com
  • 作者简介:王正和(1976-),男,博士,高级工程师,主要从事沉积层序及油气勘探方面的研究工作。地址:(610083)成都市一环路北三段2号成都地质调查中心。Email:3121927631@qq.com。
  • 基金资助:
    新疆维吾尔自治区地勘基金项目“新疆准噶尔盆地南缘重点远景区页岩气调查评价”（编号：N13-4-XJ02）资助

Unconventional reservoir characteristics of Upper Permian Lucaogou Formation in southern margin of Junggar Basin

WANG Zhenghe, YU Qian   

  1. Chengdu Center, China Geological Survey, Chengdu 610081, China
  • Received:2017-03-13 Revised:2017-05-03 Online:2017-09-21 Published:2017-09-21

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摘要： 为了深化准噶尔盆地南缘阜康—乌鲁木齐段非常规油气资源的认识，通过野外地质调查、岩心观察、薄片鉴定、样品分析测试等对上二叠统芦草沟组非常规储层特征进行了详细研究。结果表明：构成非常规油气储层的岩石类型有3种，分别为以粉砂岩为主的细粒沉积岩、以黏土岩为主的细粒沉积岩及碳酸盐岩；芦草沟组上段、中段和下段炭质细粒沉积岩密度分别为2.3～2.8g/cm3，2.3～2.4g/cm3和2.4～2.5g/cm3。炭质细粒沉积岩密度与TOC含量具有较好的负相关性，孔隙度以0～2%为主，渗透率以0～0.1mD为主，比表面积以0.1～0.5cm2/g及1.0～2.0cm2/g为主。芦草沟组非常规油气储集空间类型由纳米—微米级微孔和2期构造缝隙构成。

关键词: 东河砂岩, 黏土矿物, 孔喉半径, 水淹变化机理, 哈得逊油田

Abstract: In order to deepen unconventional resources in Fukang-Urumqi zone,southern margin of Junggar Basin, based on field investigation,core observation,slice identification,sample testing,the unconventional reservoir characteristics of Upper Permian Lucaogou Formation were studied. The results show that unconventional reservoir was formed with tree types lithic facies,such as silt-based fine-grained sedimentary rock,clay-based finegrained sedimentary rocks and carbonates. The density of the carbonaceous fine-grained clastic rocks of upper, middle and lower member of Lucaogou Formation are 2.3-2.8 g/cm3,2.3-2.4 g/cm3,2.4-2.5 g/cm3 respectively. Their porosity is dominant with 0-2.0%,and permeability is dominant with 0-0.1mD,specific surface area is dominant with 0.1-0.5 cm2/g and 1.0-2.0 cm2/g. There is an apparent negative correlation between the density and TOC content of fine-grained clastic rock. It is considered that reservoirs space is mainly composed of nanometermicron micropores and two-phases structural fractures.

Key words: Donghe sandstone, clay minerals, pore throat radius, mechanism of waterflooding, Hadeson Oilfield

中图分类号: 

  • P618.13
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