摘要
为了研究特定区域储层裂缝的展布,选取垂直钻取的岩芯上任意角度裂缝,在古地磁岩芯定向及岩芯垂直裂缝定向方法的基础上,推导出岩芯坐标系中用样品磁倾角和磁偏角表达的裂缝走向公式,从而得到任意角度岩芯裂缝的走向,恢复每条裂缝在井下的原始方位,进而获得某区块岩芯裂缝整体展布趋势。
To study the distribution of reservoir fractures in a particular area, fractures of arbitrary angles in the vertical drilling cores were selected to deduce the formula of fracture strike expressed with declination and inclination of samples in core coordinate system, based on the methods of core orientation with paleomagnetism and vertical fracture redirection. Then, the strike of the fractures with arbitrary angles and original orientation under the well of every fracture were obtained, and the overall trend of core fractures in this certain area was got.
出处
《地质学刊》
CAS
2015年第2期318-321,共4页
Journal of Geology
基金
国家自然科学基金资助项目(41074045
41174055)
陕西省普通高等学校重点学科专项资金(081802)
关键词
岩芯裂缝
垂直钻井岩芯
古地磁
重定向
core fracture
vertical drilling core
paleomagnetism
redirect
