Through the comparison of various electrochemical protection testing techniques, we find that it is the most accurate in protective electric potential of the casing.
通过对比各种电化学保护测试法，介绍了接触测试法在对套管保护电位测量中的应用。
The formula deduced in this paper provides the theoretical foundation for the downhole casing protection and prevention.
文中推导出的公式为井下套管的保护及防治提供了理论依据。
The causes of influence of steel casing on cathodic protection of buried pipelines are analyzed. Some Suggestions about design and installation of pipeline and cathodic protection are put forward.
分析钢质套管对埋地管道阴极保护影响的原因，提出管道设计施工、阴极保护系统设计施工中与此有关的改进意见。
By means of contact test with a reference electrode underground, we measured the distribution of casing protection potential along vertical depth.
采用地下参比电极“接触测试”法，对套管实施保护后的纵向深度套管保护电位进行定量测试。
This is a reversal thinking operation concept against the pipe drilling method of casing pipe wall protection described in conventional books.
本方法与书本上所述的套管护壁跟管钻进方法有反向思维操作概念。
This paper introduces a new wall protection method for drilling loose strata casing pipe wall protection.
本文介绍一种新的钻探松散地层护壁方法——套管护壁“三板斧”。
Depositors have the protection of the casing side vacuum head and vacuum cups.
保护套管 存方真空头及真空杯。
It 's very important for hydrocarbon reservoir finding, casing program design, drilling safety guarantee and hydrocarbon reservoir protection to do abnormal pressure prediction and detection well.
做好异常压力预监测工作对于发现油气藏、设计井身结构、保障钻井安全、保护油气层具有十分重要的意义。
The utility model relates to a safety cap for protection, comprising a cap casing and a cap lining.
本实用新型公开了一种防护用的安全帽，它包含帽壳、帽衬；
When the face protection is not required, the face mask can be pushed on a helmet casing or taken off. The application is simple and convenient.
当不需面部防护时，只需将面罩推至安全帽的帽壳上，或者取下，应用十分简单方便。
The casing is made by fireproofing plastic and is good for environmental protection.
外壳使用放火阻燃塑料制成，有益环保；
The casing is made by fireproofing plastic and is good for environmental protection.
外壳使用放火阻燃塑料制成，有益环保；
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