A Study on Optimal Shape of the Reamer in Horizontal Directional Drill;
水平定向钻扩孔器最优形状的研究
It was revealed that the most important factors in pore-expanding process were the type and concentration of expanding agents .
多孔羟基磷灰石(HA)陶瓷的气孔率和贯通性是重要参数,实验分析了影响多孔HA陶瓷成型与贯通的诸因素,提出提高多孔体微孔贯通与扩张的方法,选择对半烧结的陶瓷坯体有一定腐蚀作用的扩孔剂进行扩孔实验。
The A review is provided of the manufacturing process and installing methods of pore-expanded titanium mesh anodes.
扩孔钛网阳极具有电流荷载能力较强、在阴极保护中能提供重现性较好的电流、杂散电流少、安装省时省力等特点,在钢筋混凝土结构表面的阴极保护工程中受到了广泛的关注。
Water jet soil reaming technology and its influencing factors;
水射流土层扩孔技术及影响因素
These technologies include loading seal before drilling and safety drilling in,reaming,drilling fluid and cementing,by which can smoothly realize drillling in the extremely thick salt-gypsum bed in super-deep hole.
通过塔河油田沙114、沙115、沙116等这些重点井的钻探,针对盐膏层的复杂情况,形成了一系列超深井巨厚盐膏层钻井技术,主要包括钻开盐膏层前承压堵漏技术、岩膏层安全钻进技术、扩孔技术、钻井液技术等,实现了超深井巨厚盐膏层的安全顺利钻进。
The paper introduces the reaming technology of lateral drilling,discusses the mechanism of reducing reservoir damage by using reaming technique.
介绍了侧钻井扩孔施工工艺 ,探讨了用扩孔技术减少侧钻井油层损害的机理。