水泥环

为了提高油井水泥环抗射孔、压裂等动态冲击能力，提高水泥环射孔后层间密封能力，进行了提高水泥石韧性试验研究。

In order to improve the cement sheath dynamic impact strength such as anti-perforation and anti-fracturing etc. and improve the interlayer seal capability after perforation , we conduct the study on enhancing cement sheath toughness .

水泥环厚度增加时CO值减小；

C / O values decrease with increasing cement thickness .

从化学角度分析了CO2在不同温度下对油井水泥环碳化腐蚀的机理、影响因素及防护措施。

The corrosion mechanism , influence factors of corrosion and prevention measures at different temperature are analyzed .

许多油田在开发过程中，都遇到了地层中含有的诸如CO2和H2S等腐蚀性介质影响油井水泥环密封效果的问题，加强抗腐蚀水泥外加剂和水泥浆体系的研究变得至关重要。

Many oilfields in the world encountered the problem of oil cement sealing property ruined by corrosive mediums in the formation such as CO 2 and H 2S .

建立了二维平面轴对称和平面应变有限元模型，利用Ansys有限元软件分析了套管在水泥环影响下的变形特征。

Thereafter , a 2D plane axisymmetry and strain finite element model was created . The characteristics of casing deformation under the impact of cement sheath were analyzed using the Ansys finite element software .

针对中原油田油水井固井水泥环窜漏问题，研制出BFD化学封窜剂。

A chemical channeling sealing agent BFD is developed to solve the problem of channeling through cement sheath in Zhongyuan .

并据此认为，若有不同频率的CBL测井组合，可能查明未胶结好的薄层及套管与水泥环间的间隙。

It suggests that the clearances between the thin beds not well cemented and casings and cement sheathes may be examined if CBL logging combination of various frequency exists .

计算结果表明，当套管和水泥环厚度小于4.4cm时，常规的TLD密度测井仪器在套管井中对地层密度的变化反应仍然灵敏。

Calculated results show that the traditional TLD density tool is very sensitive to formation density change in cased hole when the thickness of casing or cement mantle is less than 4.4 cm .

有限元分析计算部分：利用ANSYS的高级建模技术建立包含岩石、水泥环、套管的三维有限元分析模型，并建立接触单元及采用子模型技术进行分析计算。

Finite element analysis computation part : Contains the rock , the cement sheath , the casing three dimensional finite element analysis model using the ANSYS senior modeling technology establishment , and the establishment contact unit uses the sub-module technology to carry on the analysis computation .

借助于Hopkinson多功能材料动态力学性能测试装置和射孔综合模拟实验装置等一系列实验就射孔对水泥环的损伤进行了综合实验研究。

Using " Hopkinson " device , which is material dynamic mechanics measuring device , and comprehensive perforation simulation device , a serial of experiments have been finished for researching of cement sheath damage caused by perforation .

层内水力割缝射孔工艺，该工艺定位控制精度高，割缝无震动，对薄夹层及水泥环不产生损伤，试验的最小隔层厚度达到0.2m；

The thickness of construction interface jammed by this packer is 0.2 meter . The second one is the inner hydraulic slotting perforation technology . This technology is characterized by high accuracy for positional control and no quaking for slotting .

水泥环性质对套管外载影响的模拟试验

Simulation experiment on effects of cement mantle features on casing loading

水泥环对套管井电阻率测井的影响

The Effect of Cement Annulus on Resistivity Log in Cased Hole

套损井修复中水泥环的损伤研究

Damage Research of Cement Loop on Repairing the Destroyed Casing Well

另外，水泥环是否对套管的强度有增强作用，也是值得关注的问题。

In addition , the cement ring should enhance casing strength .

地层流体影响水泥环胶结质量的机理分析

The mechanism analysis of effect of stratum fluid on cement bonding

机械整形对套损井水泥环的损伤分析

Damage of Cement Loop by Mechanical Truing of Casing Wells

套管水泥环组合抗挤强度模型及其弹性分析

Model and elasticity analysis of collapse strength of casing - cement mantle

扫描式伽马&伽马管柱厚度及水泥环密度测井仪研究

Research of Logging of Scanning Gamma-gamma Casing Thickness Gauge and Cement Density

提高油井水泥环力学形变能力的途径及其作用机理研究

The Methods and the Mechanisms of Improving Deformation Capability of Cement Stone

固井水泥环柱的腐蚀研究

Researches on Corrosion of cement sheath of oil / gas well casings

套管-水泥环-地层应力分布的理论解

Theoretical solutions of stress distribution in casing-cement and stratum system

油水井水泥环在冲击载荷作用下的损伤分析

Damage of oil well cement loop under the impact load

地层和水泥环弹性模量对套管强度的影响分析

Effect of elastic modulus of stratum and cement sheath on casing strength

非均匀地应力下水泥环界面应力分布规律研究

Study of Stress Distribution of Cement Sheath Cross Section under Non-Uniform Formation Stress

多射孔对套管-水泥环结构强度的影响

Influences on strength of casing-cement cylindrical shell with multi-openings

水泥环性质对套管抗挤强度影响的有限元分析

Finite Element Analysis of Effect of Cement Sheath Property on Casing Collapsing Strength

固井水泥环对套管承载能力的影响规律

Influencing tendencies of cement sheath on casing retaining capacity

提高油气井固井水泥环韧性的研究

The Studying on Improvement of Cementing Sheath Toughness of Oil and Gas Well

套管-水泥环-地层耦合系统热应力理论解

Theoretical solution of thermal stress for casing-cement-formation coupling system