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.
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.
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。
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