复杂碳酸盐岩储层裂缝预测方法对比性研究

祖克威; 程秀申; 罗周亮; 尹楠鑫; 王楷

doi:10.12090/j.issn.1006-6616.2018.24.04.048

复杂碳酸盐岩储层裂缝预测方法对比性研究

doi: 10.12090/j.issn.1006-6616.2018.24.04.048

祖克威^{1, 2,},
程秀申²,
罗周亮²,
尹楠鑫³,
王楷⁴

1.
中国石油大学(北京)地球科学学院, 北京 102249
2.
中国石化中原油田分公司勘探开发科学研究院, 河南郑州 450018
3.
重庆科技学院石油与天然气工程学院, 重庆 401331
4.
河南发展燃气有限公司, 河南郑州 450018

基金项目:

国家科技重大专项 2016ZX05017-001

详细信息

作者简介:
祖克威(1986-), 男, 高级工程师, 博士, 主要从事储层裂缝评价预测研究。E-mail:zukewei1234@aliyun.com

中图分类号: P618.13
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- 被引次数: 0
出版历程
- 收稿日期: 2017-11-26
- 修回日期: 2018-05-12
- 刊出日期: 2018-08-01

THE COMPARATIVE ANALYSIS OF DIFFERENT METHODS FOR FRACTURE PREDICTION IN COMPLEX CARBONATE ROCK RESERVOIR

1.
College of Geoscience, China University of Petroleum, Beijing 102249, China
2.
Exploration and Development Research Institute, Zhongyuan Oilfield Branch Company, SINOPEC, Zhengzhou 450018, Henan, China
3.
College of Petroleum and Natural Gas Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
4.
Henan Development Gas Co., Ltd., Zhengzhou 450018, Henan, China

摘要

摘要: 围绕着复杂碳酸盐岩储层裂缝的预测方法，以普光地区嘉陵江组为例，在统计研究区裂缝发育规律的基础上，分别利用构造曲率法、纵波宽方位各向异性法和有限元法对裂缝进行预测，比较各个方法预测结果和适用条件。对比结果表明：曲率法基于几何学理论，可以定性的分析裂缝发育强度，无法预测裂缝方位，该方法适用于基础资料较少、构造简单、褶皱发育的地区；纵波宽方位各向异性法是地球物理法预测裂缝的首选方法，可以直接反映有效裂缝的方位和密度，但是该方法适用于倾斜裂缝和高角度裂缝发育区，对地震资料质量和处理要求较高；有限元数值模拟法从正演角度再现了裂缝形成过程，计算分析裂缝的发育强度和方位，该方法需要对研究区裂缝形成机理认识充分，预测结果的精度取决于模型的精细程度。
- 碳酸盐岩储层 /
- 裂缝预测 /
- 曲率法 /
- 宽方位各向异性 /
- 有限元法 /
- 普光地区
Abstract: Taking Jialingjiang formation in Puguang area as an example, with the fractures development law drawn in the area as a basis, the structural curvature method, S-wave wide azimuth anisotropy method and finite element method were used in fracture prediction, and the results and application conditions of each method were compared. The results show that the curvature method based on the geometry theory could be used to analyze the intensity of fracture development but not the azimuth. It fits in the area with fewer data, simple structure and folds. The S-wave wide azimuth anisotropy method is a preferred geophysics method, which could identify the azimuth and development density of the fracture; however, this method only fits in the area with dipping or high-angle fracture and requires a high quality of seismic data; The finite element method (FEM) could reappear the forming process of fractures in the way of forward and calculate the development intensity and azimuth, but it requires a good understanding of the fracture formation mechanism in the study area, and the accuracy of the prediction results depends on the precision of the model.
- carbonate rock reservoir /
- fracture prediction /
- curvature method /
- wide azimuth anisotropy /
- finite element method /
- Puguang area

HTML全文

图 1 普光地区构造纲要图

Figure 1. Structure outline map of Puguang area

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图 2 不同组系裂缝间距指数

Figure 2. The fracture spacing indexes of different sets

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图 3 普光地区薄片裂缝发育特征

Figure 3. The development characteristics of fractures in thin sections from Puguang area

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图 4 薄片统计不同类型裂缝开度分布图

Figure 4. The histogram of different types of fractures in thin section

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图 5 构造主曲率法预测裂缝原理示意图

Figure 5. Schematic diagram of the principle of structural principal curvature method for predicting fracture

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图 6 普光地区嘉二段最大主曲率分布图

Figure 6. The distribution map of maximum principal curvature in the second member of Jialingjiang Formation, Puguang area

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图 7 主曲率法计算结果同裂缝发育强度对比图

Figure 7. The contrast map of the calculating result by principal curvature and fracture development intensity

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图 8 纵波宽方位各向异性裂缝分析结果

Figure 8. The analysis result of fractures based on S-wave azimuth anisotropy

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图 9 方位各向异性分析的裂缝指数和单井裂缝发育强度关系图

Figure 9. The relationship map between the fracture index calculated by azimuth anisotropy and fracture development intensity in single well

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图 10 裂缝预测总破裂分布图

Figure 10. The distribution map of total fracture prediction

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图 11 数值模拟预测裂缝破裂率和单井裂缝发育强度关系图

Figure 11. The map of relationship between the fracture rates predicted by numerical simulation and fracture development intensity in single well

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