鄂尔多斯盆地东南部延长组岩心裂缝重定向

发布时间：2018-04-19 00:28

  本文选题：鄂尔多斯盆地 + 岩心裂缝　； 参考：《地质科技情报》2017年03期

【摘要】：裂缝对鄂尔多斯盆地低渗透储层至关重要。为研究该盆地岩心裂缝展布,在古地磁岩心定向以及笔者曾提出的古地磁岩心裂缝重定向的基础上,以鄂尔多斯盆地东南部某油田延长组的岩心为研究对象,对采集的样品采用2种不同的加工方式,建立样品坐标系和反向样品坐标系,采用古地磁方法分别对其进行重定向。最终推导出各自测试结果所表达的裂缝方向的公式,得到鄂尔多斯盆地东南部某油田6口井延长组岩心裂缝的方位,并对比验证了其计算结果,均比较可靠。研究表明对于类似鄂尔多斯盆地的裂缝系统,运用古地磁方法对2个相对坐标系加工的标样进行裂缝重定向是可靠的,且精度较高,可为同类盆地裂缝研究提供参考。
[Abstract]:Fracture is very important to low permeability reservoir in Ordos Basin.In order to study the distribution of core fractures in this basin, on the basis of paleomagnetic core orientation and paleomagnetic core fracture reorientation proposed by the author, the core of Yanchang formation in an oil field in the southeast of Ordos Basin is taken as the research object.The sample coordinate system and the reverse sample coordinate system were established by two different processing methods. The paleomagnetic method was used to redirect the samples.Finally, the formula of fracture direction expressed by each test result is deduced, and the orientation of Yanchang core fracture of 6 wells in an oil field in the southeast of Ordos Basin is obtained, and the calculated results are compared and verified, all of which are relatively reliable.The study shows that the paleomagnetic method is reliable and accurate for the fracture reorientation of two standard samples processed in relative coordinate system for the fracture system similar to Ordos basin, which can be used as a reference for the study of fractures in the similar basins.
【作者单位】： 陕西国际商贸学院珠宝学院;西北大学地质学系;
【基金】：校政重点科研项目(SMXY201606) 陕西省普通高等学校重点学科专项(081802)
【分类号】：P618.13
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本文编号：1770788