岩性油气藏 ›› 2015, Vol. 27 ›› Issue (5): 19–24.doi: 10.3969/j.issn.1673-8926.2015.05.004

• 油气地质 • 上一篇    下一篇

储层速敏效应形成机理及其垂向差异因素分析---以塔北隆起吉拉克地区三叠系储层为例

韩登林12,张双源2,袁文芳3,冯志超4,欧阳传湘5,彭舒琪6   

  1.  1. 长江大学 油气资源与勘探技术教育部重点实验室,武汉 430100 ; 2. 长江大学 地球科学学院,武汉 430100 ; 3. 中国石油塔里木油田分公司 勘探开发研究院,新疆 库尔勒 841000 ;4. 中国石油长庆油田分公司 第一采油厂,陕西 延安 716000 ; 5. 长江大学石油工程学院,武汉 430100 ; 6. 新疆大学,乌鲁木齐 830046 )
  • 出版日期:2015-09-26 发布日期:2015-09-26
  • 作者简介:韩登林( 1979- ),男,博士,副教授,从事储集层成岩作用方面的教学与研究工作。 地址:( 430100 )湖北省武汉市长江大学油气资源与勘探技术教育部重点实验室。 E-mail : handl@yangtzeu.edu.cn 。
  • 基金资助:

    湖北省教育厅科学研究计划项目“库车坳陷白垩系碎屑岩储层水 - 岩相互作用的动力学机制剖析”(编号: B2013285 )和长江大学青年人才基金项目“断层带格局下碎屑岩压实改造特征研究”(编号: 2015cqr08 )联合资助

Formation mechanism and vertical distribution of velocity sensitivityeffect in reservoir: An example from Triassic sandstone reservoir in Jilake area, Tabei uplift

Han Denglin12, Zhang Shuangyuan2, Yuan Wenfang3, Feng Zhichao4,Ouyang Chuanxiang5, Peng Shuqi6   

  1.  1. Key Laboratory of Exploration Technologies for Oil and Gas Resources , Ministry of Education , Yangtze University ,Wuhan 430100 , China ; 2. School of Geosciences , Yangtze University , Wuhan 430100, China ; 3. Research Institute of Exploration and Development , PetroChina Tarim Oilfield Company , Korla 841000 , Xinjiang , China ; 4. No. 1 Oil Production Plant , PetroChina Changqing Oilfield Company , Yan ’ an 716000 , Shannxi , China ; 5. College of Petroleum Engineering ,Yangtze University , Wuhan 430100 , China ; 6. Xinjiang University , Urumqi 830046 , China
  • Online:2015-09-26 Published:2015-09-26

摘要:

轮南吉拉克地区三叠系TⅡ2 4 小层表现出强速敏效应,且速敏损害率高值主要集中于TⅡ2 4 小层的上部(TⅡ2 4-2 单层和TⅡ2 4-1 单层),垂向差异特征明显。通过显微薄片观察,结合 X 射线衍射荧光光谱和毛管压力曲线测试分析,分别从宏观和微观的角度探讨引发层段内强速敏效应的形成机理。 研究认为,含量较高的黏土矿物以及岩浆岩岩屑的溶蚀残余颗粒,是研究层段内易迁移微小颗粒的主要来源,而孔喉结构参数也表明研究层段内孔喉连通性整体较差,这两方面因素是强速敏效应的主控因素;另外,上述控制因素在垂向上表现出明显的差异性,黏土矿物相对富集于 TⅡ2 4 小层的上部,而孔喉连通性也在TⅡ2 4 小层的上部相对较差,两者共同构成了速敏损害率垂向差异的主控因素。

关键词: 空间自相关系数, 粒度分析, 最小二乘法, 模拟岩石薄片

Abstract:

 As a main production layer of Jilake area in Tabei uplift, the TII24 layer is subject to a considerable variety of velocity sensitivity. The higher values of the velocity sensitivity effect are concentrated in the upper part of the TⅡ24 layer(single sand layers of TⅡ24-1 and TⅡ24-2), showing a marked vertical disparity. The formation mechanism of velocity sensitivity effect within the layer was thoroughly analyzed from macroscopic and microscopic perspective by means of observing thin section, analyzing the X-ray fluorescence spectra and measuring the capillary pressure curve. The result shows that high content of clay minerals and the remaining particles of dissolved volcanic grains constitute the main source of the transmittable particles within the layer. The pore throat structure parameters indicate pore throat connectivity is relatively poor. The two aspects mentioned above are the main controlling factors for the strong velocity sensitivity. Relatively high content of clay minerals and comparatively poor pore throat connectivity in the upper part of the TII24 layer are the key controlling factors for the vertical disparity of the velocity sensitivity damage.

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