各向异性储层部分射开斜井新表皮模型

doi:10.11885/j.issn.1674-5086.2016.10.11.06

西南石油大学学报(自然科学版) ›› 2018, Vol. 40 ›› Issue (1): 104-113.DOI: 10.11885/j.issn.1674-5086.2016.10.11.06

各向异性储层部分射开斜井新表皮模型

董文秀^1,2,3, 王晓冬^1,2,3, 王家航^1,2,3

1. 中国地质大学(北京)能源学院, 北京海淀 100083;
2. 海相储层演化与油气富集机理教育部重点实验室, 北京海淀 100083;
3. 非常规天然气地质评价及开发工程北京市重点实验室, 北京海淀 100083

收稿日期:2016-10-11 出版日期:2018-02-01 发布日期:2018-02-01
通讯作者: 王晓冬,E-mail:wxd_cug@cugb.edu.cn
作者简介:董文秀,1991年生,女,汉族,江苏盐城人,博士,主要从事油气田开发方面的研究。E-mail:1247611148@qq.com;王晓冬,1963年生,男,汉族,北京人,教授,博士,主要从事油气田开发方面的研究。E-mail:wxd_cug@cugb.edu.cn;王家航,1988年生,男,汉族,黑龙江大庆人,博士,主要从事油气田开发方面的研究。E-mail:wangjiahang1988@126.com
基金资助:
国家自然科学基金（51674227）

New Epidermal Model of Partially Perforated Deviated Well in Anisotropic Reservoir

DONG Wenxiu^1,2,3, WANG Xiaodong^1,2,3, WANG Jiahang^1,2,3

1. School of Energy, China University of Geosciences, Haidian, Beijing 100083, China;
2. Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Enrichment Mechanism, Ministry of Education, China University of Geosciences, Haidian, Beijing 100083, China;
3. Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, China University of Geosciences, Haidian, Beijing 100083, China

Received:2016-10-11 Online:2018-02-01 Published:2018-02-01

摘要/Abstract

摘要： 为了研究部分射开斜井的增产效果，通过对空间瞬时点汇解进行镜像反演后叠加，得到顶、底边界封闭的无限大板状储层中的点汇解；然后，沿斜井轨迹进行积分得出部分射开斜井的解；最后，通过对压力解进行晚期近似，得到了一种新的部分射开斜井的表皮模型。与前人的斜井及部分射开井表皮分别进行对比，验证了新表皮模型的正确性。结果表明，随着井斜角度与井身长度的增大，表皮因子逐渐减小，且井身长度越长，井斜角度增大产生的增产效果更加明显；储层厚度和渗透率各向异性因子的增大会降低增产效果，且在渗透率各向异性因子较小的储层中，增加井斜角度会使表皮因子明显减小。在各向异性因子较小的储层中，拥有较大倾斜角度和井身长度的部分射开斜直井具有较好的增产效果。

关键词: 表皮因子, 井斜角度, 各向异性因子, 井身长度, 储层厚度

Abstract: In order to study the yield-increasing effect of partially perforated deviated wells, the point sink solution in the infinite plate reservoir with closed top and bottom boundaries is obtained through mirror image inversion and then superposition of the spatial instantaneous point sink solution; then, the solution of the partially perforated deviated well is obtained by integration along the deviated well trajectory; finally, a new epidermal model of a partially perforated deviated well is acquired through the late approximation of the pressure solution. The validity of the new epidermal model is verified through comparison with previous models of deviated wells and a partially perforated well epidermis separately. The results show that the epidermal factor gradually decreases with the increase in the deviation angle and bore length of the well; the yield-increasing effect produced by the well deviation angle increase would be more obvious if the well bore length increases; the increase in the anisotropic factors of reservoir thickness and permeability would reduce the yield-increasing effect. Moreover, the well deviation angle increase would make the epidermal factor decrease significantly in the reservoir with smaller anisotropic factors of permeability, in which the partially perforated deviated well with a larger deviation angle and well bore length would have a better yield-increasing effect.

Key words: skin factor, well deviation angle, anisotropic factors, well bore length, reservoir thickness

中图分类号:

TE349

董文秀, 王晓冬, 王家航. 各向异性储层部分射开斜井新表皮模型[J]. 西南石油大学学报(自然科学版), 2018, 40(1): 104-113.

DONG Wenxiu, WANG Xiaodong, WANG Jiahang. New Epidermal Model of Partially Perforated Deviated Well in Anisotropic Reservoir[J]. 西南石油大学学报(自然科学版), 2018, 40(1): 104-113.

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各向异性储层部分射开斜井新表皮模型

New Epidermal Model of Partially Perforated Deviated Well in Anisotropic Reservoir

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