钻探定向岩心的用途和岩心定向技术的进展

Core orientation and its Progress

定向岩心在地质研究和矿产勘查中得到广泛的应用,不仅可以迅速而方便地确定地下岩矿层和结构面的产状,而且还可以判断沉积物的移动方向,了解地应力场,以及预报钻孔弯曲的趋势。岩心定向作业除采用常规的机械手段外,还可采用古地磁方法、孔内电视和岩层扫描方法等。岩心定向技术的发展正方兴未艾。

Being applied widely in geological investigation, oriented core can be used not only in fixing the occurance of underground ore horizon and structualface quickly and conveniently but also in determining the moving direction of sediments, understanding stress field of the earth and forcasting the inclination of hole deviation. Besides adoptind conventional mechanical method, geomagnetism method, logging television and stratum scar can also be used, it has a good futune.