裂缝性低渗储层应力敏感性的尺度模型
Scale Model of Stress Sensitivity for Low Permeability Fractured Reservoirs

作者: 赵海峰 , 陈 勉 , 金 衍 :中国石油大学(北京)石油工程学院,石油工程教育部重点实验室,北京; 丁云宏 , 王永辉 :中国石油勘探开发研究院廊坊分院,廊坊;

关键词: 裂缝性储层低渗透非均质性应力敏感尺度模型Fractured Reservoirs Low Permeability Heterogeneity Stress Sensitivity Scale Model

摘要:
裂缝性致密储层存在非均质性、应力敏感性及各向异性,而应力敏感性评价实验的岩心尺寸(通常为25 mm)受取心条件及实验条件限制,不可能无限放大,因此实验测试的流动尺度远远小于井下实际流动尺度,导致实验数据不能直接描述实际储层流动规律。该项目计划采用岩石力学分析方法及介质串并联模型,研究得到裂缝性致密储层应力敏感性的尺度模型。尺度模型中考虑岩心尺寸、井下流动尺寸、裂缝密度、裂缝产状、地应力等因素。对孔隙型岩心和裂缝性岩心分别进行应力敏感实验,尺度模型给出由小尺寸孔隙型岩心和裂缝性岩心的应力敏感实验规律推导实际储层大范围流动规律的方法。项目将把应力敏感尺度模型应用于产能预测,研究裂缝性致密储层水平井、多分支水平井及分段压裂水平井产能计算的新方法。

Abstract: There are heterogeneity, stress sensitivity and anisotropy in the fractured reservoir with low permeability while the sizes of the cores (the diameter is usually 25mm) in the experiment about the stress sensitivity are limited by the coring and experimental conditions and are not likely to be magnified indefinitely, so the flow scale in the experiment test is far less than the actual under- ground flow scale, which results in that the flow law of the real reservoir cannot be directly de- scribed by the experimental data. The scale model of stress sensitivity for fractured reservoir with low permeability is established by the analysis method in rock mechanics and the series-parallel model of the medium. The size of the cores, the size of the undergroud flow, fracture density, crack occurrence, in-site stress and so on are considered in the scale model. Stress sensitivity experi- ment of porous cores and fractured cores should be respectively performed and the scale model provides the method of deducing large range of flow law in real reservoir according to the law of stress sensitivity experiment about the small size of porous cores and fractured cores. The scale model will be used to predict the productivity and to study new methods of the productivity cal-culation in horizontal well, multi-branch horizontal well and staged fracturing horizontal well with low permeability fractured reservoir.

文章引用: 赵海峰 , 陈 勉 , 金 衍 , 丁云宏 , 王永辉 (2015) 裂缝性低渗储层应力敏感性的尺度模型。 矿山工程, 3, 7-12. doi: 10.12677/ME.2015.31002

参考文献

[1] 雷群, 王红岩, 赵群, 等 (2008) 国内外非常规油气资源勘探开发现状及建议. 天然气工业, 12, 7-10.

[2] 张志强, 郑军卫 (2009) 低渗透油气资源勘探开发技术进展. 地球科学进展, 8, 854-862.

[3] 钱伯章, 朱建芳 (2007) 世界原油质量趋势及非常规石油资源开发前景. 天然气与石油, 3, 40-45.

[4] 郝明强, 胡永乐, 刘先贵 (2007) 裂缝性低渗透油藏特征综述. 特种油气藏, 3, 12-15.

[5] 郝明强, 胡永乐, 刘先贵 (2007) 裂缝性低渗透油藏微观结构与渗流理论研究进展. 新疆石油天然气, 1, 8-12.

[6] 郝明强, 杨正明, 刘学伟, 等 (2006) 裂缝性低渗透油藏压力敏感性研究. 新疆石油地质, 4, 471-473.

[7] 郝明强, 侯建峰, 胡永乐, 等 (2007) 裂缝性低渗透油藏各向异性的尺度效应. 石油勘探与开发, 6, 724-728.

[8] 付静, 孙宝江, 于世娜, 等 (2007) 裂缝性低渗透油藏渗流规律实验研究. 中国石油大学学报(自然科学版), 3, 81-84.

[9] 齐亚东, 站剑飞, 李晓明, 等 (2012) 特低渗透砂岩储层应力敏感性实验. 科技导报, 3, 49-52.

[10] 陈金辉, 康毅力, 游利军, 等 (2011) 低渗透储层应力敏感性研究进展及展望. 天然气地球科学, 1, 182-189.

[11] Zisser, N. and Nover, G. (2009) Anisotropy of permea-bility and complex resistivity of tight sandstones subjected to hydrostatic pressure. Journal of Applied Geophysics, 68, 356-370.

[12] Yang, J.F., Liu, R.J. and Liu, H.Q. (2011) A universal model of stress sensitive coefficient in low per-meability reser- voir. Procedia Engineering, 12, 177-183.

[13] Yang, Y., Peng, X.D. and Liu, X. (2012) The stress sensitivity of coal bed methane wells and impact on production. Procedia Engineering, 31, 571-579.

[14] Jolly, R.J H., Wei, L. and Pine, R.J. (2000) Stress-sensitive fracture-flow modelling in fractured reservoirs. SPE59042.

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