| 岩心裂缝重定向的古地磁方法研究 |
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| 引用本文： | 韦乐乐,程鑫,刘秀婷,周亚楠,吴汉宁.岩心裂缝重定向的古地磁方法研究[J].地质科学,2013,48(4):1286-1294. |
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| 作者姓名： | 韦乐乐 程鑫 刘秀婷 周亚楠 吴汉宁 |
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| 作者单位： | 西北大学地质学系, 大陆动力学国家重点实验室 西安 710069 |
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| 基金项目： | 国家自然科学基金项目，中国地质调查局国土资源大调查综合研究基金项目，陕西省普通高等学校重点学科专项资金 |
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| 摘 要： | 裂缝信息对于低渗透储层的勘探开发具有重要意义。本文在深入探讨利用古地磁方法进行岩心裂缝重定向原理的基础上,详细介绍了岩心裂缝重定向的工作方法。针对垂直及平行于岩心中心轴的两种样品加工方式,推导出可直接利用退磁结果表达的裂缝方向的公式,并将这一结果应用于鄂尔多斯盆地一口有裂缝井的岩心,取得较好的应用效果。研究结果表明,利用古地磁方法进行岩心裂缝重定向具有操作简便、成本较低、且精度相对较高的特点。本文研究结果对于鄂尔多斯盆地的裂缝系统研究具有参考意义。
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| 关 键 词： | 古地磁 岩心定向 裂缝重定向 |
| 收稿时间： | 2013-06-16 |
| 修稿时间： | 2013-06-16; |
A paleomagnetical method to redirect cracks in cores |
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| Wei Lele
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Cheng Xin
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Liu Xiuting
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Zhou Yanan
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Wu Hanning.A paleomagnetical method to redirect cracks in cores[J].Chinese Journal of Geology,2013,48(4):1286-1294. |
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| Authors: | Wei Lele Cheng Xin Liu Xiuting Zhou Yanan Wu Hanning |
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| Institution: | Department of Geology, State Key Laboratory of Continental Dynamis, Northwest University, Xi'an 710069 |
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| Abstract: | The crack information is of great significance for the exploration and development of low-permeable reservoirs.After principle of reorientation core-cracks with paleomagnetic method was discussed,the operational approach of that was introduced specially.According to vertical and parallel drilling ways of samples,formulas for crack-redirection were elicited with the results of demagnetization.And the method was applied to the cores of a fractured well in Ordos Basin and achieved good results.The research shows that using paleomagnetic method to redirect cores-cracks has the characteristics of easy operation,low cost and high precision.At the same time,the research is reference for the study of Ordos Basin cracks. |
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| Keywords: | Paleomagnetism Orientation of drilling core Redirection of cracks |
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