Oil base annulus protection fluid is not corrosive, however, its high cost and environment pollution restricts its universal use.
油基环空保护液是非腐蚀性的，但单位成本高、环境污染严重，不能广泛应用。
The source and detector, however, are arranged to be sensitive to the density of material in the annulus and can distinguish between fluid and cement behind the casing.
与密度测井不同的是，其伽马射线源和探测器的布置方式能使它们对井内环形空隙中物质的密度很敏感，可以将套管外面的流体和水泥区分开来。
Using the differential motion equation in fluid mechanics, this paper developed the flow models of the laminar flow of Bingham's fluid in an inclined eccentric annulus.
本文应用流体力学中的运动微分方程，建立了宾汉流体在倾斜偏心环空中的层流流动模型。
The correct volume ensures that the column of fluid in the tubing string is balanced by the column of fluid in the annulus.
正确的用量确保了在油管柱中的液柱被环形空间中的液柱所平衡。
The returned carrier fluid enters the internal flow path at the base of the tool before crossing over to the annulus above the packer assembly, isolating the annulus.
在转换至封隔器装置上面的环空以前，回流的携带液在工具底部进入内部流动通道，于是将环空隔离。
After the fluid is used, the annulus corrosion rate is more lower that that of tubings.
在投加环空保护液后，环空腐蚀速度远远小于油管内腐蚀速度。
The injection mandrel is equipped with a port - and check-valve system to direct fluid pumped down the annulus or injection line into the production conduit.
配注器装有孔口阀和单向阀系统，使泵入的流体沿环空向下或沿注入管线向下进入生产导管。
So, that researching on the flow of viscoelastic fluid in annulus with the inner cylinder executing a planetary motion has great significance in academic theory in the engineering.
因此研究粘弹性流体在内管做行星运动的环空中的流动具有学术理论意义和工程实际意义。
A sonic tool used in a pumping well to determine the distance to the top of the fluid in an annulus during pumping and shut in.
在抽油井的抽油过程中和关井期间测量环空内液面高度的一种声波测井方法。
The results show the particle velocity in the annulus area in this equipment is about an order of magnitude higher than that in ordinary spout-fluid beds;
结果表明：稀相喷流床中环隙区颗粒的下降速度比传统喷动床高出一个数量级；
The results show the particle velocity in the annulus area in this equipment is about an order of magnitude higher than that in ordinary spout-fluid beds;
结果表明：稀相喷流床中环隙区颗粒的下降速度比传统喷动床高出一个数量级；
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