石油与天然气地质 ›› 2010, Vol. 31 ›› Issue (2): 255-259.doi: 10.11743/ogg20100219

• 专家论坛 • 上一篇    下一篇

孤岛中一区聚合物驱后储层参数变化规律

何胡军; 王秋语; 程会明   

  1. 1.成都理工大学能源学院; 2.中国石油化工股份有限公司胜利油田分公司地质科学研究院
  • 出版日期:2010-04-26 发布日期:2010-09-02

A study on reservoir parameter changes after polymer injection in Block 1 of the central Gudao

He Hujun1; Wang Qiuyu2;  Cheng Huiming2   

  1. 1.College of Energy Resources; Chengdu University of Technology; Chengdu; Sichuan 6180059; China; 
    2.Geological Scientific Research Institute; Shengli Oilfield Company; SINOPEC; Dongying; Shandong 257015; China
  • Online:2010-04-26 Published:2010-09-02

PDF (PC)

850

被引次数

12

摘要：

利用孤岛中一区注聚区注聚前和见聚后两口取心井岩心分析化验资料,对比讨论储层经过长期注聚开发后物性参数变化规律。通过分析认为,储层经过长期注入聚合物后,使一部分小喉道变大,孔隙之间的畅通性进一步变好,孔隙迂曲程度减小。在储层微观参数上表现为最大孔喉半径、平均孔喉半径和孔喉半径中值的增加,排驱压力和汞饱和50%压力的减小,变异系数减小,均值系数增加。在宏观参数上则表现为渗透率的增加,储层渗透性变好,而孔隙度变化值在误差允许的范围基本不变。

关键词: 物性参数, 聚合物驱, 孔隙结构, 渗透率, 孤岛中一区, 济阳坳陷

Abstract:

By using the core analysis data before polymer injection and after polymer breakthough from two wells in the polymer-injection area of Block 1,the central Gudao,the change patterns of reservoir parameters after a long-term polymer drive are compared and discussed.It is suggested that the long-term polymer drive has resulted in enlarging some small pore throats,improving the communication among pores and reducing pore tortuosity in the reservoirs.For the microscopic parameters of the reservoirs,the maximum,average,and normal pore-throat radiuses increased,the expulsion pressure,the mercury 50% saturation pressure and the variation coefficient decreased,and the mean coefficient rised.For the macroscopic reservoir parameters,the permeability was enhanced,and the porosity variation was within the range of allowable error.

Key words: petrophysical parameter, polymer drive, pore texture, permeability, Block1 in the central Gudao, Jiyang Depression