摘要
定向井 (或斜井 )取心时取心工具随着井眼的轨迹而倾斜 ,其内岩心筒因受重力作用而下垂 ,与外岩心筒内壁相接触 ,外筒带动岩心内筒一起旋转。为避免出现这一问题 ,研制了D— 810 0型定向井取心工具。工具的外筒采用上下稳定器 ,可保证井眼轨迹稳定 ;内筒采用上下两点扶正 ,可避免内筒跟随外筒旋转 ,并能扶正岩心内筒 ,同时又能保证钻井液顺利通过。该工具在 10多口井上应用 ,取心进尺 2 78 94m ,取心长 2 63 85m ,平均岩心收获率为 94 6% ,可满足地质勘探需要。
The inner bareel may rotate with the outer baxrel when the coring tool for directional holes operates Thereby a new coring tool is developed The outer barrel of the new toof adopis upperer and lower stabilizers to ensure the stable operation, and the imier barel is centrallzed by the uppor and lower alignment bearings to avqid rotating with the outer barrel The new tool was used on more than 10 wells, and the mean core recovery reacbes 94 6%
出处
《石油机械》
北大核心
2001年第2期35-37,0,共3页
China Petroleum Machinery
