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- But the two stage tools used to so far are mostly required to drill the rubber plug or cement plug out after the cementing job is done. 但目前所使用的双级注水泥工具固井后均需用小钻杆钻除胶塞和水泥塞，费用高、时间长。
- Keywords deep well;two stage cementing;two stage cementer;future trend; 深井;双级固井;双级注水泥器;发展趋势;
- two stage cementing 双级固井
- Gradient multi-setting cement slurry system can take the place of double stage cementing in long isolation sections in certain degree, and it displaces many advantages. 对于封固段较长的固井作业,采用梯度多凝水泥浆体系,在一定程度上可以代替双级固井,具有很强的优越性。
- Objective Explore the method for the estimation of sample size in two stage cluster randomization tirals. 目的探讨两阶段整群随机化设计两组比较样本例数估计方法。
- Two stage T1/T2 cases and two stage T3 cases were missed using the water-enema method. 应用水灌肠以后，处于T1/T2阶段的患者有2例没有诊断出来，处于T3期的有2例。
- Acrylate, DDBSA and DMF were used to react under a two stage. 丙烯酸盐，DDBSA和二甲基甲酰胺之间的反应常常分二个阶段。
- A two stage growth process for metastable pits was suggested. 提出了一个亚稳态蚀孔生长的两阶段模型。
- The Bretton woods system broke down in two stages. 布雷顿森林体系的垮台分为两个阶段。
- Using coconut oil as a raw material, lauric acid diethanolamide was synthesized with onepot method throngh two stage procedures, VIZ methyl esterification and amidation. 以椰子油为原料，经一锅法实现甲酯化和酰胺化两步反应合成月桂酸二乙醇酰胺。
- Extracting initial strongly negative data set from positive data and unlabeled data is a base for constructing a PU-oriented text classifier by two stage frame method. 利用正样例集合和未标识样例集合获取初始的最强反例集合是使用两步框架方法构造一个面向PU问题文本分类器的基础。
- The surgery consists of two stages. 手术由两个阶段组成。
- Adoping two stage method liquid-solid fermentation to produce apple vinegar and the acetobacter as better fermenting flora were selected, its processing was also studied. 采用二段式固液相结合发酵法酿造苹果醋,对酿造菌种进行了优选,并对酿造工艺进行了研究。
- The construction and connector cementing methods of Phoenix steel-cored conveyer belt are superior to the other belt. 与其他输送带生产厂相比对,凤凰钢芯输送带的结构及其联接头的胶接方式具有其独特的优势。
- The evacuation was to be carried out in two stages. 整个移民安置计划分两个价段进行。
- The plant will be commissioned in two stages. 开机调试的过程分两个阶段进行。
- The process technology of the colour spectro prisms is described with special emphasis on cementing methods of colour spectro prism series. 本文叙述了彩色分光棱镜的加工工艺,并着重介绍了彩色分光棱镜组的胶合方法。
- This exercise is divided into two stages. 这项工作分两阶段进行。
- The troops will be pulled out in two stages. 撤军工作分两步进行。
- The newly developed cooling system has a high efficient two stage radiator. 最新被开发的冷却系统拥有高效率的两阶段冷却。
