岩性油气藏 ›› 2015, Vol. 27 ›› Issue (1): 39–43.doi: 10.3969/j.issn.1673-8926.2015.01.006

• 油气地质 • 上一篇    下一篇

准噶尔盆地二叠系芦草沟组致密油岩心覆压孔渗变化规律研究

邓 泳,杨 龙,李 琼,王玉梅,胡冰艳   

  1. 中国石油新疆油田分公司 实验检测研究院,新疆 克拉玛依 834000
  • 出版日期:2015-02-03 发布日期:2015-02-03
  • 第一作者:邓泳( 1975- ),男,工程师,主要从事油田开发实验分析与研究工作。 地址:( 834000 )新疆克拉玛依市准噶尔路 29 号中国石油新疆油田分公司实验检测研究院。 电话:( 0990 ) 6867874 。 E-mail : dengyong688@petrochina.com.cn 。

Change rule of porosity and permeability of tight oil core of Permian Lucaogou Formation under reservoir condition in Junggar Basin

DENG Yong,YANG Long, LI Qiong, WANG Yumei,HU Bingyan   

  1.  Research Institute of Experiment and Detection , PetroChina Xinjiang Oilfield Company , Karamay 834000 , Xinjiang , China
  • Online:2015-02-03 Published:2015-02-03

摘要:

油层条件下岩石的孔隙度和渗透率与净上覆压力的关系是储量计算和油气田开发研究的重要内容。 利用 CMS-300 覆压测试系统,根据岩心压汞、铸体薄片、扫描电镜及场发射等多项实验分析资料,研究了致密油在地层条件下的孔隙度和渗透率与净上覆压力的关系,同时为分析致密油与低孔、低渗储层的差异,还对低孔、低渗储层岩心进行了实验。 研究结果表明: ① 随着净上覆压力的增加,覆压孔隙度和覆压渗透率均与净上覆压力呈幂函数递减关系; ② 与低孔、低渗储层相比,压实作用对致密油造成的孔隙度和渗透率的损失率均较小; ③ 恢复压力后,致密油的孔隙度和渗透率基本能恢复到初始值,岩样具有较好的弹性。

关键词: 干扰试井, 数值模拟, 方案设计, 南海油田

Abstract:

 The relations of net overburden pressure with rock porosity and permeability under the reservoir condition are important for reserve calculation and study of oil and gas field development. Through CMS-300 overburden pressure test system, combined with core mercury injection, cast thin section, scanning electron microscope, field emission and many other experimental analysis data, this paper studied the difference of the relationship between porosity,permeability and the net overburden pressure under the reservoir condition and conventional reservoir condition. The results show that: ①with the increase of net overburden pressure, the overburden pressure porosity and permeability are diminishing with power function; ②compared with the low porosity and low permeability re servoir, the loss ratio of tight oil porosity and permeability caused by compaction is smaller; ③after the pressure recovery, the porosity and permeability of tight oil can return to the initial value almost, so the tight oil sample has good elasticity.

Key words:  interference well test, numerical simulation, project design, South China Sea oilfield

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