该接头也许是用螺纹与套管连接在一起,或焊接在一起,以及可能还有一个法兰或卡箍连接与防喷器组或井口配接。
This adapter may be threaded or welded onto the casing, and may have a flanged or clamped connection to match the BOP stack or wellhead.
对我国有关单位今后研究、生产、使用直缝焊接套管有参考作用。
It has reference role to the researches, manufacture and the usage of straight welded casing in our nation.
外套管表面有焊接缝。
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