A small gap that can form between the casing or liner and the surrounding cement sheath, most commonly formed by variations in temperature or pressure during or after the cementing process.
在套管或衬管与周围的水泥环之间所形成的小间隙，这些间隙是由于在固井期间或固井之后温度或压力的变化所致。
The model consists of perforation, wellbore, cement casing, oil layer, micro-annulus and transverse fracture.
模型中包括射孔孔眼、套管、水泥环、油层、微环隙和横向裂缝。
Squeeze cementing USES pressure to force the cement through holes or perforations in the casing.
挤水泥时在压力下将水泥浆压经套管中的射孔孔眼。
Hence, the well designer plans on a safety margin of cement left inside the casing to guarantee that the fluid left outside the casing is good-quality cement.
因此，井眼设计人员在安全边界内设计留在套管内的水泥量，以确保套管外的水泥属于高质量的水泥。
The inside (including the taper) is usually made of cement or thermoplastic, since this material must be drilled out if the well is to be deepened beyond the casing point.
浮鞋的内部（包括锥型段部分）通常由水泥或热塑性材料组成，如果在套管鞋处井眼还需要继续加深的话这种材料必须被钻掉。
A multistage cement job is used to avoid fracturing the formation when cementing long casing strings.
多级注水泥作业用来在对长套管柱注水泥时避免使地层破裂。
Cement sheath are the main composites for cementing well and isolating the pay zone together with casing pipes.
水泥石是构成井下水泥环的主要材料，它和套管共同起到层间封隔的作用。
The float shoe prevents reverse flow, or U-tubing, of cement slurry from the annulus into the casing.
浮鞋能够防止环空中的水泥浆向套管内流动这种回流或者U型管效应的发生。
A full-sized length of casing placed at the bottom of the casing string that is usually left full of cement on the inside to ensure that good cement remains on the outside of the bottom of the casing.
一根放置于套管柱最下端的全尺寸长度的套管，通常里面装满水泥，以确保套管外能够完全充满水泥。
Destruction of cement sheath outside casing is one of the causes for channeling and corrosion.
套管外水泥环的破坏是导致管外串槽、套管外腐蚀的原因之一。
According to strain coordination condition, the force and deformation state formulas of casing, cement loop and stratum are derived.
根据应变协调条件，推导出了套管、水泥环及地层受力变形状态的计算公式。
The condition in which cement flows in a channel only on some sides of the casing or borehole annulus, and thus does not provide adequate hydraulic isolation in all radial azimuths.
水泥只在套管或井眼环形空间的某一面的通道内流动的现象，因而不能在所有的径向上提供充分的水力隔离层。
While Halliburton had finished cementing the casing area outside the pipe, it had not yet been able to set a cement plug to block the pipe before the explosion.
尽管哈里·伯顿公司已经结束了管道外部套管区域的水泥浇铸，却未能在爆炸发生前设置一个水泥封井装置把管道封起来。
The purpose of perforation is penetrating the casing tube, cement sheath and a certain depth of the formation and forming unhindered channels for oil and gas flowing into the well casing.
射孔目的就是射穿套管、水泥环和地层内一定的深度，为地层的油气流入至井筒，形成一个顺畅的通道。
A component installed near the bottom of the casing string on which the cement plugs land during the primary cementing operation.
安装在套管柱底部附近的一个部件，在初次注水泥作业期间水泥塞坐放于其上。
A log that USES the variations in amplitude of an acoustic signal traveling down the casing wall between a transmitter and receiver to determine the quality of cement bond on the exterior casing wall.
使声波信号沿着发射器和接收器之间的套管井壁传播时的幅度衰减确定套管外水泥胶结质量的声波测井方法。
A float collar is placed at the top of the float joint and a float shoe placed at the bottom to prevent reverse flow of cement back into the casing after placement.
浮箍是放置于浮动接头之上的，而浮鞋则是放置于浮动接头之下，以防止水泥浆回流到套管内。
To pump cement slurry down a well to fill the space between the casing and the rock walls.
向井中注入水泥浆，以充填在套管与岩壁之间的空间。
Casing, cement and formation plane strain mechanical model are established, considering casing with initial ovality.
针对套管的不同初始椭圆度建立了套管、水泥环、地层平面应变力学模型。
Sector Cement Bond Tool(SBT) is an acoustic log tool for inspecting quality of the cement bond around the circumference of the casing tubing ans for measuring the pore paths.
扇区水泥胶结测井仪（SBT）是一种检测套管水泥胶结质量及探测孔穴孔道的声波测井仪器。
A study on the microstructure at the cementation interface between cement and casing is conducted in the dynamic aging condition.
在动态养护条件下对油井水泥与钢管的胶结界面处微观结构进行了研究。
Hold centralizers cement baskets on any position of casing, which ensures the positions of centralizers cement basket to meet the design.
可将弹性套管扶正器或水泥伞置于套管本体上的任意部位，确保扶正器的安放位置满足设计要求。
A comparison is made on the anti-collapse capability of the casing with and without cement sheath by means of full-scale test.
采用全尺寸实物试验方法对套管有无水泥环情况下的抗挤毁能力做了对比试验。
In order to get more accurate logging data, it is very important to do research on the influence rule of metal casing and cement sheath to cross-well electromagnetic logging.
为了得到更精确更趋于实际的测井数据，研究套管和水泥环等对井问电磁测井的影响规律具有非常重要的意义。
A continuous 360-degree annular space around casing allows cement to completely seal the casing to the borehole wall.
围绕套管的四周360度的环型空间允许水泥完全能够密封套管与井壁。
Influenced by the objective condition, the problems such as the casing centralizing, design of cement slurry system are the maximum difficulties and also the key factors.
受水平井客观条件的影响，水平段的套管扶正问题，水平井的水泥浆体系设计问题，都是水平井固井的最大难点，也是影响水平井固井最关键的因素。
Finally, the conclusion is that the pulse pressure caused by vibrated water injection can not damage to casing pipe, cement sheath and formation.
最后得出结论——振动注水所产生的脉动压力不会对套管、水泥环及地层造成损坏。
Finally, the conclusion is that the pulse pressure caused by vibrated water injection can not damage to casing pipe, cement sheath and formation.
最后得出结论——振动注水所产生的脉动压力不会对套管、水泥环及地层造成损坏。
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