Underbalanced simple wellhead device

The utility model discloses an underbalanced simple wellhead device and relates to the technical field of drilling equipment. The underbalanced simple wellhead device comprises a rotary blowout preventer and a clamping seat which is installed on the rotary blowout preventer. The clamping seat is a h...

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Bibliographische Detailangaben
Hauptverfasser: MIN GUANGPING, PENG BIQIANG, ZHAO WENDONG, DONG MINGKUN, LONG XUHUA, YE XIAOMIN, WANG CAILING, XIE BANGQIANG, MEI JUNMING, JIANG YEWEI, DONG ZHONGJUN, YE XIUFENG, YE CHANGWEN
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The utility model discloses an underbalanced simple wellhead device and relates to the technical field of drilling equipment. The underbalanced simple wellhead device comprises a rotary blowout preventer and a clamping seat which is installed on the rotary blowout preventer. The clamping seat is a hydraulic holder. The rotary blowout preventer comprises a tube body. A rubber core box is arranged on the top portion of the tube body. Due to the underbalanced simple wellhead device, the reloading difficulty of an underbalanced wellhead is overcame, the technical problem that mud can easily flow out of a wellhead is solved, mud pollution is eliminated, and cost is saved.