新疆石油地质 ›› 2011, Vol. 32 ›› Issue (1): 102-103.

• 讨论与争鸣 • 上一篇    下一篇

实测岩石孔隙压缩系数偏高原因再分析——与李传亮教授商榷

王厉强1a, 李正科1b, 申红2, 罗阳俊1b, 唐喜鸣1b, 张中劲1b, 文静1b   

  1. 1.中国石油吐哈油田分公司a.博士后科研工作站; b.勘探开发研究院,新疆哈密839009;
    2.中国石化胜利油田有限责任公司地质科学研究院,山东东营257061
  • 收稿日期:2010-07-13 发布日期:2020-08-07
  • 作者简介:王厉强(1974-),男,山东临沂人,工程师,博士,油气田开发,(Tel)0902-2772244(E-mail)yjywlq@petrochina.com.cn.

A Discussion on Results Interpretation Again of Higher Measured Rock Compressibility

WANG Li-qiang1a, LI Zheng-ke1b, SHEN Hong2, LUO Yang-jun1b, TANG Xi-ming1b, ZHANG Zhong-jin1b, WEN Jing1b   

  1. 1. Tuha Oilfield Company, PetroChina, a. Post-Doctoral Work Station, b. Research Institute of Exploration and Development, Hami, Xinjiang 839009, China;
    2. Geological Research Institute, Shengli Oilfield Company Ltd., Sinopec, Dongying, Shandong 257061, China
  • Received:2010-07-13 Published:2020-08-07

摘要: 对实测岩石孔隙压缩系数偏高的原因进行分析后认为,文献[1]提出孔隙压缩系数偏大的原因是受岩心表皮效应影响的这种认识并不全面,这种现象应在实验测试中的确存在,但这并非是导致实验结果偏大的主要原因,孔隙压缩系数计算公式对低孔隙度岩样的孔隙体积敏感性才是主要原因。在综合分析岩石所受应力的基础上,进一步提出了新的岩石孔隙压缩系数的校正式,该式克服了文献[1]提出的校正式的缺陷,可以较好地反映孔隙压缩系数随孔隙度的变化关系。上述研究成果,对于正确认识实验测试中异常值产生的原因,作适宜的校正以及油藏工程计算中的正确取值,有重要的意义。

关键词: 孔隙度, 压缩系数, 应力, 敏感性

Abstract: Based on the Reference [1], the reason of higher measured rock compressibility is due to the skin effect of cores. This paper believes that this kind of effect does exist in lab experiment, but it is not the main reason of it. The main reason is that equation for porosity compressibility is sensible to porosity volume in low porosity sample. On the basis of comprehensive analysis of rock stress, this paper proposes a new regulation equation, which gets over the fault of equation from the Reference [1] and provides right relationship of compressibility vs porosity. These results are significant to correct understanding of the reason of higher measured rock compressibility in lab experiment, proper correction and computation of it in reservoir engineering.

Key words: porosity, compressibility coefficient, stress, sensitivity

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