1) case pipe
顶替排量
2) displacement
顶替
1.
By this research,some data is obtained for the reseach of mechanisms about displacement in the oversized annular.
得到了不同情况下(井径扩大率、流量、液体流变性能等变化)"大肚子"环空段不同位置径向截面的流速曲线变化情况,为研究"大肚子"环空段的顶替机理提供了一定的数据资料。
2.
During cementing operations, the major issue to be addressed is the displacement of drilling fluid by cement slurry.
固井作业中,首要解决的是注水泥顶替泥浆的问题。
3.
By using the mathematical and physical methods,this paper presents the derivation of annular liquid laminar flow equation group in the process of slimhole cementing displacement.
通过数学物理方法 ,推导出了小井眼固井顶替过程中液体环空层流流动方程组 ,通过保形变换、数值差分等处理 ,成功地编制出了计算机运算程序 ,得出了液体环空层流速度场、流量场分布规律。
3) displacing
顶替
4) displacement efficiency
顶替效率
1.
By employing techniques of cementing plug and semi-saturated salt-water-base slurry and improving displacement efficiency, preceding cementing problems are solved and cementing for no-bo.
分析了西气东输地下储气库盐穴及盐层固井存在盐穴无井底、盐层固井、井底温度较高、井眼尺寸大、水泥石长期胶结性能要求高等固井技术难点,采用打水泥塞建立人工井底、半饱和盐水水泥浆体系、提高大井眼顶替效率等技术措施,解决了采卤井老井改造固井技术难题,实现了无井底盐穴固井,通过改进欠饱和盐水水泥浆性能,提高了新腔钻井的盐膏层固井质量。
2.
This paper analyzes the principle improving mud displacement efficiency by rotating liner, presents the mechanism of liner hangers and advantages of this cementing technique, and proposes the required conditions and precautions for this technique.
分析了旋转尾管固井工艺提高顶替效率的原理,介绍了尾管悬挂器的工作原理和旋转尾管固井的优点,提出了旋转尾管固井所需条件和注意事项。
3.
At present, 5 1/2" casing withdrawal and replacement operation often leads to a large hole diameter and 90mm of clearance between wall and casing, which brings about a lower displacement efficiency and an uncertain cementing quality.
5(1/2)套管取换套作业造成的井径较大,井壁与套管间的间隙在90mm左右,导致因井顶替效率低,固井质量无法保证。
5) displacement interface
顶替界面
1.
Numerical simulation on influence of rheological property of front fluid on stability of cement displacement interface;
前置液流变性对顶替界面稳定性影响的数值模拟
6) Displacement rate
顶替效率
1.
Through laboratory testing,the results show if rheology of cement slurry is good,displacement rate is also good.
通过理想环空的假设 ,得出流变性好的浆体 ,顶替效率好。
参考词条
补充资料：低心排血量综合征
低心排血量综合征
lowcardiac output syndrome
指由于心脏排血量下降而出现多脏器灌注不足、组织缺氧的复杂病理生理变化。病因主要是低血容量、心包压塞、心律失常、心力衰竭和手术矫正畸形不满意。表现为神志淡漠、末梢性发绀、动脉压降低，尿少、血氧分压降低。根据典型症状和体征，参考心脏指数低于1.5L/(min·m2)〔小儿低于2.0L/(min·m2)〕可确诊。治疗原则为对症综合治疗。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。