2H井施工难度大：水平井段长，管柱摩阻大，对施工管柱要求安全系数高；
The construction of P202-2H well is hard due to long horizontal hole section and large string friction. High safety coefficient for strings in construction is required.
对钢管柱节点的设计进行了讨论，使其在实际施工中更具可实施性。
The design of the steel tubular column joints is also discussed, which makes it more operable in actual construction.
介绍了现场常用的三种管柱结构，简述了各工具部件的作用及现场施工工序。
Three type of testing pipes are introduced and function of every component and operating procedure are illustrated briefly.
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